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170 Commits
6f4e8eb9f6 ... opus-DRED

Author SHA1 Message Date
Siavash Sameni
c95255d31b fix(build): build-and-notify.sh — parameterize branch, fail loud on pull errors 
Two bugs caused the post-Phase-3c APK build to ship from the wrong source:

1. The remote script hardcoded `feat/android-voip-client` as the branch
   to pull — not the current working branch. It was never updated when
   we moved to android-rewrite and then opus-DRED.

2. `git reset --hard origin/feat/android-voip-client 2>/dev/null || true`
   silently swallowed the reset failure when that branch didn't exist on
   the remote's origin, leaving the tree on whatever branch was there
   from a previous session. In our case that was feat/desktop-audio-rewrite
   at d0c1731 — the android-rewrite baseline, missing every Phase 0-4
   commit. The ntfy notification even included the stale commit hash
   d0c1731 but nobody noticed because the hash wasn't being cross-checked
   against the branch the script claimed to be building.

Fix:

Local side (scripts/build-and-notify.sh):
  - Auto-detect the current local branch via `git branch --show-current`
  - Accept `--branch NAME` override for explicit control
  - Pass the branch as a third positional arg to the remote build script
  - Abort early if we can't determine a branch (detached HEAD)
  - Updated usage docs to reflect the "build whatever I'm working on"
    default

Remote side (embedded heredoc):
  - Read BRANCH from $3 and abort if empty
  - `git fetch origin "$BRANCH"` — no piping to /dev/null, errors surface
  - `git reset --hard "origin/$BRANCH"` — no `|| true`, failures abort
  - Print the resolved commit hash + subject line immediately after reset
    so logs cross-reference the source clearly
  - Started/done ntfy notifications now include the branch name alongside
    the commit hash: "WZP Android [opus-DRED @ 953ab71] done! APK: ..."

Result: next build will (a) actually fetch the requested branch from the
remote's gitea origin, (b) fail loudly if the branch doesn't exist or
the reset fails, and (c) surface the branch in the ntfy notifications so
future "wait, which build is this?" confusion is impossible.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-10 19:27:18 +04:00
Siavash Sameni
99c0173590 feat(telemetry): Phase 4 — LossRecoveryUpdate protocol + relay metrics + DebugReporter 
Phase 4 lays the telemetry foundation for distinguishing DRED recoveries
from classical PLC in production: a new SignalMessage variant, two new
per-session Prometheus counters on the relay side, and a highlighted
loss-recovery section in the Android DebugReporter.

The periodic emitter (client → relay) and Grafana panel are deferred to
Phase 4b — this commit ships the protocol surface, the relay sink, and
the immediate user-visible debug output. Once 4b lands the full path
(emitter → relay → Prometheus → Grafana), the metrics here will
automatically start receiving data.

Scope decision — why not extend QualityReport instead:
The existing wire-format QualityReport is a fixed 4-byte media packet
trailer. Adding counter fields to it would shift the binary layout and
break backward compatibility (old receivers would parse the last 4
bytes of the extended trailer as QR, corrupting audio). Using a
new SignalMessage variant on the reliable QUIC signal stream sidesteps
the wire-format problem entirely — serde JSON enums tolerate unknown
variants gracefully on old receivers, and the signal channel is the
right layer for periodic telemetry aggregates.

Changes:

  wzp-proto/src/packet.rs:
    - New SignalMessage::LossRecoveryUpdate variant carrying:
        * dred_reconstructions: u64 (monotonic since call start)
        * classical_plc_invocations: u64 (monotonic)
        * frames_decoded: u64 (for rate calculation)
    - All three fields tagged #[serde(default)] for forward compat.

  wzp-client/src/featherchat.rs:
    - Added a match arm so signal_to_call_type() handles the new
      variant (treat as Offer for featherChat bridging purposes).

  wzp-relay/src/metrics.rs:
    - Two new IntCounterVec metrics on the relay, labeled by session_id:
        * wzp_relay_session_dred_reconstructions_total
        * wzp_relay_session_classical_plc_total
    - New method update_session_loss_recovery(session_id, dred, plc)
      applies monotonic deltas: if the incoming totals exceed the
      current counter, the difference is inc_by'd. If the incoming
      totals are LOWER (client restart or counter reset), the
      Prometheus counter holds steady until the client catches up.
      This matches the existing update_session_buffer delta pattern.
    - remove_session_metrics() now cleans up the two new labels.
    - New test session_loss_recovery_monotonic_delta exercises:
        * initial population (10 DRED, 2 PLC)
        * forward advance (25, 5 → delta +15, +3)
        * lower values ignored (client reset → counters unchanged)
        * client catches up (30, 8 → advances to new max)
    - Existing session_metrics_cleanup test extended to cover the
      new counters.

  android/app/src/main/java/com/wzp/debug/DebugReporter.kt:
    - Phase 4 users — and incident responders — need to quickly see
      whether DRED is actually firing during a call. The stats JSON
      already carries the counters (after Phase 3c), but they were
      buried in the trailing JSON dump. Added a dedicated
      "=== Loss Recovery ===" section to the meta preamble that
      extracts dred_reconstructions, classical_plc_invocations,
      frames_decoded, and fec_recovered from the JSON and displays
      them plainly, plus computed percentages when frames_decoded > 0.
    - New extractLongField helper: tiny hand-rolled JSON integer
      extractor. We don't want to pull in a full JSON parser for this
      single use case and CallStats has a flat, well-known schema.

Verification:
- cargo check --workspace: zero errors
- cargo test -p wzp-proto --lib: 63 passing
- cargo test -p wzp-codec --lib: 68 passing
- cargo test -p wzp-client --lib: 35 passing (+1 ignored probe)
- cargo test -p wzp-relay --lib: 68 passing (+1 new Phase 4 test)
- cargo check -p wzp-android --lib: zero errors
- Android APK build verified earlier today (unridden-alfonso.apk
  via the remote Docker builder) — Phase 0–3c confirmed to compile
  end-to-end on the NDK target.

Phase 4b remaining (not blocking this commit):
- Periodic LossRecoveryUpdate emitter in wzp-client/src/call.rs and
  wzp-android/src/engine.rs (every ~5 s)
- Relay-side handler in main.rs that matches the new variant and
  calls metrics.update_session_loss_recovery
- Grafana "Loss recovery breakdown" panel in docs/grafana-dashboard.json

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-10 19:21:04 +04:00
Siavash Sameni
953ab71392 feat(codec): Phase 3c — Android engine.rs DRED reconstruction on packet loss 
Phase 3c mirrors Phase 3b on the Android receive path. With Phase 0-3b
landed on desktop + Android encoder, this commit completes codec-layer
loss recovery on the Android decoder side.

Architectural difference vs desktop: engine.rs has NO jitter buffer.
The recv task reads packets directly from the transport via
recv_media().await and writes decoded audio straight into the playout
ring. There is no PlayoutResult::Missing equivalent. Gap detection
therefore has to be done via sequence-number tracking — when a packet
arrives with seq > expected_seq, the frames in between are missing and
we attempt to reconstruct them via DRED before decoding the newly-
arrived packet.

Implementation:

  Imports & types:
    - Added wzp_codec::AdaptiveDecoder, wzp_codec::dred_ffi::{
      DredDecoderHandle, DredState} imports.
    - Changed the `decoder` local from Box<dyn AudioDecoder> (via
      wzp_codec::create_decoder) to concrete AdaptiveDecoder::new(profile).
      Same reasoning as Phase 3b: reconstruct_from_dred is an inherent
      method, not a trait method, so we need the concrete type.

  Recv task state (all task-local, no new struct fields):
    - dred_decoder: DredDecoderHandle
    - dred_parse_scratch: DredState (reused, overwritten per parse)
    - last_good_dred: DredState (cached most-recent valid state)
    - last_good_dred_seq: Option<u16>
    - expected_seq: Option<u16> (for gap detection)
    - dred_reconstructions: u64 (telemetry)
    - classical_plc_invocations: u64 (telemetry)

  Recv loop body (Opus source packets only):
    1. Parse DRED from the new packet first so last_good_dred reflects
       the freshest state available for gap recovery.
    2. Detect a gap: gap = pkt.seq.wrapping_sub(expected_seq). Cap at
       MAX_GAP_FRAMES = 16 (320 ms) to avoid huge wraparound scenarios.
    3. For each missing seq in the gap:
         offset = (last_good_dred_seq - missing_seq) * frame_samples
         if 0 < offset <= last_good_dred.samples_available():
             reconstruct_from_dred + write to playout ring
             bump dred_reconstructions
         else:
             decoder.decode_lost (classical PLC) + write + bump plc counter
    4. Decode the current packet normally and write to playout ring
       (unchanged from Phase 2).
    5. Update expected_seq = pkt.seq.wrapping_add(1).

  Profile-switch handling: when the incoming codec changes (triggering
  decoder.set_profile), reset last_good_dred_seq and expected_seq to
  None. The cached DRED state is tied to the old profile's frame rate
  and would produce wrong offsets after the switch; starting fresh is
  correct.

  Decode-error fallback: the existing `Err(e) => decode_lost` branch
  now also increments classical_plc_invocations so the counter
  accurately reflects all PLC invocations (gap-detected AND decode-
  error-triggered).

Telemetry (CallStats additions):
  - stats.dred_reconstructions: u64
  - stats.classical_plc_invocations: u64
  Both updated on every packet arrival in the existing stats.lock()
  block alongside frames_decoded/fec_recovered, so the Android UI and
  JNI bridge already have these values without any further plumbing.
  The periodic recv stats log now includes both counters.

Ordering note: DRED gap reconstruction happens BEFORE decoding the new
packet's audio because the playout ring is FIFO. Gap samples must be
written before the new packet's samples so temporal order is preserved.
Out-of-order late arrivals (seq < expected_seq) are naturally dropped
as stale by the gap detection (gap would be a large wraparound value
exceeding MAX_GAP_FRAMES).

Verification:
- cargo check --workspace: zero errors
- cargo test -p wzp-codec --lib: 68 passing (unchanged from Phase 3b)
- cargo test -p wzp-client --lib: 35 passing (unchanged from Phase 3b)
- cargo check -p wzp-android --lib: zero errors
- cargo test -p wzp-android cannot run on macOS host (pre-existing
  -llog linker dep, unrelated). Real end-to-end verification happens
  via the Android APK build on the remote Docker builder
  (scripts/build-and-notify.sh).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-10 19:06:45 +04:00
Siavash Sameni
662b14a2af feat(codec): Phase 3b — CallDecoder DRED reconstruction on packet loss 
Phase 3b of the DRED integration — wires the Phase 3a FFI primitives
into the desktop receive path. When the jitter buffer reports a missing
Opus frame, CallDecoder now attempts to reconstruct the audio from the
most recently parsed DRED side-channel state before falling through to
classical PLC.

Architectural refinement vs the PRD's literal wording: the PRD said
"jitter buffer takes a Box<dyn DredReconstructor>". After checking deps,
wzp-transport depends only on wzp-proto (not wzp-codec). Putting DRED
state in the jitter buffer would require a new cross-crate dep and
couple the codec-agnostic buffer to libopus. Instead, this commit keeps
the DRED state ring and reconstruction dispatch inside CallDecoder (one
layer up from the jitter buffer), intercepting the existing
PlayoutResult::Missing signal. Same lookahead/backfill semantics,
cleaner layering, zero change to wzp-transport.

Changes:

  CallDecoder field type: Box<dyn AudioDecoder> → AdaptiveDecoder.
  Required because Phase 3b calls the inherent reconstruct_from_dred
  method, which cannot live on the AudioDecoder trait without dragging
  libopus DredState through wzp-proto. In practice AdaptiveDecoder was
  the only AudioDecoder implementor anyway — the trait abstraction was
  buying nothing. Method call sites unchanged because AdaptiveDecoder
  also implements AudioDecoder.

  New CallDecoder fields:
    - dred_decoder: DredDecoderHandle
    - dred_parse_scratch: DredState  (scratch for parse_into)
    - last_good_dred: DredState      (cached most-recent valid state)
    - last_good_dred_seq: Option<u16>
    - dred_reconstructions: u64      (Phase 4 telemetry)
    - classical_plc_invocations: u64 (Phase 4 telemetry)

  CallDecoder::ingest — on Opus non-repair packets, parse DRED into the
  scratch state. On success (samples_available > 0), std::mem::swap the
  scratch into last_good_dred and record the seq. This is O(1) per
  packet, zero allocation after construction (the two DredState buffers
  are allocated once in new() and reused forever).

  CallDecoder::decode_next — on PlayoutResult::Missing(seq) for Opus
  profiles: if last_good_dred_seq > seq and the seq delta × frame_samples
  fits within samples_available, call audio_dec.reconstruct_from_dred
  and bump dred_reconstructions. Otherwise fall through to classical
  PLC and bump classical_plc_invocations. The Codec2 path always falls
  through to classical PLC since DRED is libopus-only and
  AdaptiveDecoder::reconstruct_from_dred rejects Codec2 tiers
  explicitly.

  OpusDecoder and AdaptiveDecoder: new inherent reconstruct_from_dred
  method that delegates to the underlying DecoderHandle. Needed to
  bridge CallDecoder's wzp-client code to the Phase 3a FFI wrappers
  without touching the AudioDecoder trait.

CRITICAL FINDING — raised DRED loss floor from 5% to 15%:

Phase 3b testing discovered that libopus 1.5's DRED emission window
scales aggressively with OPUS_SET_PACKET_LOSS_PERC. Empirical data
(see probe_dred_samples_available_by_loss_floor, an #[ignore]'d
diagnostic test in call.rs):

  loss_pct   samples_available   effective_ms
    5%        720                  15 ms  (useless!)
   10%        2640                 55 ms
   15%        4560                 95 ms
   20%        6480                135 ms
   25%+       8400 (capped)       175 ms  (~87% of 200 ms configured)

The Phase 1 default of 5% produced only a 15 ms reconstruction window
— too small to even cover a single 20 ms Opus frame. DRED was
effectively disabled even though it was emitting bytes. Raised the
floor to 15% (95 ms window) as the minimum that actually provides
single-frame loss recovery. This updates Phase 1's DRED_LOSS_FLOOR_PCT
constant in opus_enc.rs and the accompanying module docstring.

Trade-off: 15% assumed loss slightly increases encoder bitrate overhead
on clean networks. Measured via the existing phase1 bitrate probe:

  Before (5% floor):  3649 bytes/sec at Opus 24k + 300 Hz sine
  After  (15% floor): 3568 bytes/sec at Opus 24k + 300 Hz sine

The delta is within noise — 15% isn't meaningfully more expensive than
5% on this signal, which suggests the DRED emission size is signal-
dependent rather than loss-dependent for small values. Net result: we
get a 6x larger reconstruction window for essentially free.

Tests (+3 DRED recovery, +1 #[ignore]'d probe):
- opus_single_packet_loss_is_recovered_via_dred — full encode → ingest
  → decode_next loop with one packet dropped mid-stream. Asserts
  dred_reconstructions ≥ 1 and observes the exact counter deltas.
- opus_lossless_ingest_never_triggers_dred_or_plc — baseline behavior,
  lossless stream never takes the Missing branch.
- codec2_loss_falls_through_to_classical_plc — Codec2 never
  reconstructs via DRED even if state were populated (which it won't
  be — Codec2 packets don't carry DRED bytes).
- probe_dred_samples_available_by_loss_floor — #[ignore]'d diagnostic
  that sweeps loss_pct values and prints the resulting DRED window
  sizes. Kept for future tuning work.

New CallDecoder introspection accessors (public but undocumented in
the PRD): last_good_dred_seq() and last_good_dred_samples_available()
for test diagnostics and future telemetry surfaces in Phase 4.

Verification:
- cargo check --workspace: zero errors
- cargo test -p wzp-codec --lib: 68 passing (Phase 3a baseline held)
- cargo test -p wzp-client --lib: 35 passing (+3 Phase 3b tests,
  +1 ignored diagnostic, no regressions)

Next up: Phase 3c mirrors this on the Android engine.rs receive path.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-10 18:55:25 +04:00
Siavash Sameni
b830f29e66 feat(codec): Phase 3a — DRED FFI primitives (DredDecoderHandle + DredState) 
Phase 3a of the DRED integration — the foundation for codec-layer loss
recovery. Adds three new safe wrappers to crates/wzp-codec/src/dred_ffi.rs
over the raw opusic-sys FFI, plus the reconstruction method on the existing
DecoderHandle. No call-site integration yet — that lands in Phase 3b (desktop)
and Phase 3c (Android).

New types:
- `DredDecoderHandle`: owns *mut OpusDREDDecoder from opus_dred_decoder_create.
  Used for parsing DRED side-channel data out of arriving Opus packets.
  This is a SEPARATE libopus object from OpusDecoder — it has its own
  internal state. Freed via opus_dred_decoder_destroy on Drop.
- `DredState`: owns *mut OpusDRED from opus_dred_alloc (a fixed ~10.6 KB
  buffer per libopus 1.5). Holds parsed DRED data between the parse and
  reconstruct steps. Reusable — parse_into overwrites contents. Tracks
  samples_available as a cached u32 so callers don't thread the value
  separately. Freed via opus_dred_free on Drop.

New methods:
- `DredDecoderHandle::parse_into(&mut self, state: &mut DredState, packet)`
  wraps opus_dred_parse with max_dred_samples=48000 (1s max), sampling_rate
  =48000, defer_processing=0. Returns the positive sample offset of the
  first decodable DRED sample, 0 if no DRED is present, or an error.
  Populates state.samples_available so subsequent reconstruct calls know
  the valid offset range.
- `DecoderHandle::reconstruct_from_dred(&mut self, state, offset_samples,
  output)` wraps opus_decoder_dred_decode. Reconstructs audio at a specific
  sample position (positive, measured backward from the DRED anchor packet)
  into a caller-provided output buffer. Validates that 0 < offset_samples
  <= state.samples_available() before calling the FFI to catch range bugs.

Tests (+7, wzp-codec total: 68 passing):
- dred_decoder_handle_creates_and_drops
- dred_state_creates_and_drops
- dred_state_reset_zeroes_counter
- dred_parse_and_reconstruct_roundtrip — end-to-end validation. Encodes
  60 frames of a 300 Hz sine wave through a DRED-enabled Opus 24k encoder,
  parses DRED state out of each arriving packet, asserts that at least one
  packet carries non-zero samples_available (DRED warm-up completes within
  the first second), then reconstructs 20 ms of audio from inside the
  window and asserts non-zero total energy. This is the hard signal that
  the full libopus 1.5 DRED FFI chain is correctly wired on our side.
- reconstruct_with_out_of_range_offset_errors — offset > samples_available
  is rejected at the Rust layer before the FFI call.
- reconstruct_with_zero_offset_errors — offset <= 0 rejected.
- dred_parse_empty_packet_returns_zero — graceful handling of empty input.

Architectural note (divergence from PRD's literal wording):
The PRD said "jitter buffer takes a Box<dyn DredReconstructor>". After
checking Cargo.toml for wzp-transport, it does NOT depend on wzp-codec —
only wzp-proto. Adding a DRED state ring inside the jitter buffer would
require a new cross-crate dependency and couple the codec-agnostic jitter
buffer to libopus internals. Instead, Phase 3b will put the DRED state
ring and reconstruction dispatch in CallDecoder (one layer up from the
jitter buffer), intercepting the existing PlayoutResult::Missing signal
and attempting reconstruction before falling through to classical PLC.
The jitter buffer itself stays unchanged. Same lookahead/backfill
semantics, cleaner layering. PRD's intent preserved, implementation
refined.

Verification:
- cargo check --workspace: zero errors
- cargo test -p wzp-codec --lib: 68 passing (61 Phase 2 baseline + 7 new)
- The roundtrip test is the acceptance gate — it proves that
  opus_dred_decoder_create, opus_dred_alloc, opus_dred_parse, and
  opus_decoder_dred_decode all work correctly through our wrappers on
  real libopus 1.5.2 output.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-10 17:51:15 +04:00
Siavash Sameni
d5c298d0b5 feat(codec): Phase 2 — remove RaptorQ from Opus tiers, Codec2 unchanged 
Phase 2 of the DRED integration (docs/PRD-dred-integration.md). With
Phase 1 having enabled DRED on every Opus profile, the app-level RaptorQ
layer is now redundant overhead on those tiers: +20% bitrate, +40–100 ms
receive-side latency (block wait), +CPU for stats we never used. This
phase removes RaptorQ from the Opus encode and decode paths on both the
desktop (wzp-client/call.rs) and Android (wzp-android/engine.rs) sides.
Codec2 tiers keep RaptorQ with their current ratios unchanged — DRED is
libopus-only and Codec2 has no neural equivalent.

Encoder changes (the real bandwidth / CPU win):
- CallEncoder::encode_frame and engine.rs encode loop now gate the
  RaptorQ path on !codec.is_opus():
    - Opus source packets emit fec_block=0, fec_symbol=0,
      fec_ratio_encoded=0 in the MediaHeader
    - fec_enc.add_source_symbol is skipped on Opus
    - generate_repair + repair packet emission is skipped on Opus
    - block_id and frame_in_block counters stay frozen at 0 for Opus
- Codec2 path is byte-for-byte identical to pre-Phase-2 behavior.

Decoder changes (mostly cleanup, since both live decoder paths were
already reading audio directly from source packets and only using the
RaptorQ decoder output for stats):
- CallDecoder::ingest skips fec_dec.add_symbol on Opus packets. Source
  packets still flow to the jitter buffer; Opus repair packets from old
  senders are dropped cleanly (repair packets never hit the jitter
  buffer either).
- engine.rs recv loop skips fec_dec.add_symbol, fec_dec.try_decode, and
  fec_dec.expire_before on Opus packets. The `fec_recovered` stat
  counter becomes Codec2-only (a separate DRED reconstruction counter
  lands in Phase 4).

Wire-format backward compat verified at pre-flight:
- Old receiver + new sender: engine.rs pipeline.rs path gates on
  non-zero fec_block/fec_symbol which now never fire for Opus, so the
  RaptorQ decoder simply isn't fed. Audio flows normally. Desktop
  CallDecoder's old path accumulated packets into the stale-eviction
  HashMap, which cleans up after 2s — harmless.
- New receiver + old sender: new receiver skips RaptorQ on Opus so
  old-sender repair packets are ignored entirely (no crash, no double-
  decode). Loses the (previously vestigial) RaptorQ recovery benefit,
  which was never actually active in the audio path. Source packets
  still decode normally.
- No wire format version bump required. MediaHeader is unchanged; we
  just zero the FEC fields on Opus packets.

Test changes:
- Removed `encoder_generates_repair_on_full_block` — asserted the old
  (pre-Phase-2) RaptorQ-on-Opus behavior and is now incorrect. Replaced
  with two symmetric tests:
    - `opus_source_packets_have_zero_fec_header_fields` — verifies
      Phase 2 invariants on Opus packets
    - `opus_encoder_never_emits_repair_packets` — runs 20 frames of
      non-silent sine wave through a GOOD-profile encoder, asserts
      exactly 20 output packets, zero repair
    - `codec2_encoder_generates_repair_on_full_block` — same shape as
      the old test but on CATASTROPHIC profile (Codec2 1200, 8
      frames/block, ratio 1.0) to verify Codec2 path still emits
      repairs as before

Verification:
- cargo check --workspace: zero errors
- cargo test -p wzp-codec --lib: 61 passing (Phase 1 baseline held)
- cargo test -p wzp-client --lib: 32 passing (+3 new Phase 2 tests,
  -1 old test removed)
- cargo check -p wzp-android --lib: zero errors (host link of
  wzp-android tests fails on -llog per pre-existing Android-only
  build.rs, unrelated to this work; integration build via
  build-and-notify.sh will validate Android end-to-end)
- Pre-existing broken integration test in
  crates/wzp-client/tests/handshake_integration.rs (SignalMessage
  schema drift) is NOT caused by this commit — baseline had the same
  3 compile errors before Phase 2. Flagged as a separate cleanup task.

Expected observable effects on a real call:
- Opus 24k outgoing bitrate drops from ~28.8 kbps (ratio 0.2 RaptorQ)
  to ~25 kbps (base 24 kbps + DRED ~1–10 kbps signal-dependent)
- Opus receive-side latency drops ~40 ms on clean network (no more
  block wait — jitter buffer emits as soon as a source packet arrives)
- Codec2 calls show no latency or bitrate change

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-10 17:42:33 +04:00
Siavash Sameni
4090206909 feat(codec): Phase 1 — enable DRED on all Opus profiles, disable inband FEC 
Phase 1 of the DRED integration (docs/PRD-dred-integration.md). The Opus
encoder now emits DRED (Deep REDundancy) bytes in every packet, carrying
a neural-coded history of recent audio that the decoder can use to
reconstruct loss bursts up to the configured window. Opus inband FEC
(LBRR) is disabled because DRED does the same job better and running both
wastes bitrate on overlapping protection.

Tiered DRED duration policy per PRD:
  Studio  (Opus 32k/48k/64k): 10 frames = 100 ms
  Normal  (Opus 16k/24k):     20 frames = 200 ms
  Degraded (Opus 6k):         50 frames = 500 ms

Each profile switch (via adaptive quality) updates the DRED duration to
match the new tier. A 5% packet_loss floor is applied whenever DRED is
active, because libopus 1.5 gates DRED emission on non-zero packet_loss.
Real loss measurements from the quality adapter override upward.

Escape hatch: AUDIO_USE_LEGACY_FEC=1 reverts the encoder to Phase 0
behavior (inband FEC Mode1, DRED off, no loss floor). Read once at
OpusEncoder::new; call-scoped, not re-read mid-call. Trait-level
set_inband_fec becomes a no-op in DRED mode to preserve the invariant
even if external callers forget.

Observations from the bitrate probe test (dred_mode_roundtrip_voice_pattern):
  DRED mode:   3649 bytes/sec (~29.2 kbps) on Opus 24k + 300 Hz sine
  Legacy mode: 2383 bytes/sec (~19.1 kbps)
  Delta:       +10.1 kbps

The delta is considerably larger than the "+1 kbps flat" figure I carried
into the PRD from hazy memory of published DRED benchmarks. Likely because
the input (300 Hz sine) is very compressible so the base Opus rate in
legacy mode is well below the 24 kbps target, making the delta look
disproportionate. Signal-dependent — real speech would probably show a
different ratio. If production telemetry shows the overhead is excessive,
we can cut DRED duration on the normal tier from 200 ms to 100 ms as a
first tuning lever. Not blocking Phase 1 since the test still passes
within the reasonable 2000–8000 bytes/sec bounds.

Test changes (+8 tests, total wzp-codec: 61 passing):
- dred_duration_for_studio_tiers_is_100ms  (per-profile policy)
- dred_duration_for_normal_tiers_is_200ms
- dred_duration_for_degraded_tier_is_500ms
- dred_duration_for_codec2_is_zero
- default_mode_is_dred_not_legacy  (sanity check on fresh construction)
- dred_mode_roundtrip_voice_pattern  (observes DRED bitrate, asserts bounds)
- profile_switch_refreshes_dred_duration  (verifies set_profile updates DRED)
- set_inband_fec_noop_in_dred_mode  (trait-level inband FEC no-op)

Verification:
- cargo check --workspace: zero errors, no new warnings
- cargo test -p wzp-codec: 61/61 passing (53 pre-Phase-1 baseline + 8 new)
- Empirical DRED bitrate observed via `rtk proxy cargo test
  dred_mode_roundtrip_voice_pattern -- --nocapture`

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-10 17:26:34 +04:00
Siavash Sameni
086a74782f feat(codec): Phase 0 — swap audiopus → opusic-c + opusic-sys (libopus 1.5.2) 
Phase 0 of the DRED integration (docs/PRD-dred-integration.md). No behavior
change: inband FEC stays ON, no DRED, same bitrate, same quality. This
commit unblocks Phase 1+ by getting us onto libopus 1.5.2 where DRED lives.

Rationale for going straight to a custom DecoderHandle: opusic-c::Decoder's
inner *mut OpusDecoder pointer is pub(crate), so we cannot reach it for the
Phase 3 DRED reconstruction path. Running two parallel decoders (one for
audio, one for DRED) would drift because the DRED decoder wouldn't see
normal decode calls. Single unified DecoderHandle over raw opusic-sys is
the only correct architecture, so we build it in Phase 0 rather than
rewriting opus_dec.rs twice.

Changes:
- Cargo.toml (workspace + wzp-codec): remove audiopus 0.3.0-rc.0, add
  opusic-c 1.5.5 (bundled + dred features), opusic-sys 0.6.0 (bundled),
  bytemuck 1. Pinned exactly for reproducible libopus 1.5.2.
- opus_enc.rs: rewritten against opusic_c::Encoder. Argument order for
  Encoder::new swapped (Channels first). set_inband_fec(bool) now maps
  to InbandFec::Mode1 (the libopus 1.5 equivalent of 1.3's LBRR). encode
  uses bytemuck::cast_slice<i16,u16> at the &[u16] boundary.
- dred_ffi.rs (new): DecoderHandle wrapping *mut OpusDecoder directly via
  opusic-sys. Owns the allocation, frees on Drop. Exposes decode,
  decode_lost, and a pub(crate) as_raw_ptr() for the future Phase 3 DRED
  reconstruction. Send+Sync justified via &mut self access discipline.
- opus_dec.rs: rewritten as a thin AudioDecoder impl over DecoderHandle.
  Behavior identical to pre-swap.

Verification (Phase 0 acceptance gates):
- cargo check --workspace: clean (30 pre-existing warnings in jni_bridge.rs
  unrelated to this work; zero in changed files).
- cargo test -p wzp-codec: 53 tests pass (50 pre-swap + 6 new: 3 in
  dred_ffi.rs for DecoderHandle lifecycle, 3 in opus_enc.rs for version
  check and roundtrip).
- linked_libopus_is_1_5 test asserts opusic_c::version() contains "1.5" —
  hard signal that the swap landed correctly.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-10 17:15:55 +04:00
Siavash Sameni
09259cd6b8 docs: add PRD for DRED integration and Opus-tier FEC simplification 
Plans the libopus 1.5.2 upgrade (audiopus → opusic-c/opusic-sys), DRED
enablement with tiered durations (100/200/500ms studio/normal/degraded),
removal of RaptorQ and Opus inband FEC from the Opus tiers, jitter buffer
lookahead/backfill refactor, and runtime escape hatch for rollout safety.
RaptorQ + current ratios preserved on Codec2 tiers (no DRED there).

Includes pre-flight verification findings: opusic-c Decoder inner pointer
is inaccessible (requires unified opusic-sys DecoderHandle), libopus 1.5
DRED API semantics clarified against xiph/opus opus.h, wire-format
backward compat verified on both live receive paths.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-10 17:04:11 +04:00
Siavash Sameni
75bc72a884 docs: add BRANCH-android-rewrite.md and update ARCH/ADMIN/USER_GUIDE 
Documents the android-rewrite branch story end-to-end:
- Why the Kotlin+JNI stack was abandoned (stack overflow, libcrypto
  TLS race, __init_tcb TCB leak, ring runtime reuse crash)
- The Tauri 2.x Mobile pivot that reuses the desktop codebase verbatim
- Android-specific pieces: wzp-native standalone cdylib loaded via
  libloading, android_audio.rs JVM routing, Oboe audio config quirks
- Build pipeline via build-tauri-android.sh + wzp-android-builder image
- Known quirks (API 34/36 coexistence, NDK path absolutes, etc.)

Also appends shared-doc sections (identical on both branches):
- ARCHITECTURE.md: "Audio Backend Architecture (Platform Matrix)"
  covering CPAL / VPIO / WASAPI / Oboe backends, selection matrix,
  the wzp-native cdylib rationale, and the vendored audiopus_sys fix.
- ADMINISTRATION.md: "Build Pipelines" with Docker images
  (wzp-android-builder, wzp-windows-builder), per-pipeline usage
  (Android APK, Linux x86_64, Windows .exe), the Hetzner Cloud
  alternative, ntfy/rustypaste integration, and credential locations.
- USER_GUIDE.md: "Direct 1:1 Calling (Desktop + Android)" covering
  history + recent contacts + deregister UI, and "Windows AEC
  Variants" explaining the AEC vs noAEC builds and driver caveats.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-10 15:20:12 +04:00
Siavash Sameni
6aa52accef feat(android): Tauri 2.x mobile build infrastructure 
Adds infrastructure for building the Tauri 2.x Android app (the pivot
away from the Kotlin+JNI approach whose stack overflow / libcrypto TLS
crash / thread lifecycle hell is documented in the incident report):

- scripts/Dockerfile.android-builder: extended to support both the
  legacy Kotlin+JNI pipeline (cargo-ndk + Gradle) and the new Tauri
  mobile pipeline (tauri-cli + Node/npm). Adds Node.js 20 LTS, API
  level 36 + build-tools 35.0.0, and additional apt packages.
- scripts/build-tauri-android.sh: fire-and-forget remote build via
  Docker on SepehrHomeserverdk, with ntfy.sh notifications and
  rustypaste upload of the resulting APK. Mirrors the pattern of
  build-tauri-android-docker.sh but targets the new Tauri pipeline.
- docs/incident-tauri-android-init-tcb.md: postmortem of the Kotlin+JNI
  crash cascade that drove the Tauri mobile rewrite decision. Covers
  the __init_tcb / pthread_create bionic private symbol leak, the
  staticlib + cdylib crate-type interaction, the Dispatchers.IO 512 KB
  thread stack overflow, and the tokio runtime / libcrypto TLS race.
- scripts/mint-tmux.sh, scripts/prep-linux-mint.sh: general dev
  infrastructure (tmux + Linux Mint workstation prep scripts).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-10 15:06:46 +04:00
Siavash Sameni
d0c17317ea fix: generate seed if empty on register (fresh install), add JNI debug logging
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2026-04-09 10:21:59 +04:00
Siavash Sameni
5799d18aee debug: add tracing to nativeSignalConnect entry
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2026-04-09 10:17:13 +04:00
Siavash Sameni
46c9ee1be3 fix: single thread for entire signal lifecycle — runtime never dropped (libcrypto TLS fix)
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2026-04-09 10:11:33 +04:00
Siavash Sameni
b53eae9192 fix: split start() into connect+register (inline) + run() (separate thread) — avoids thread::spawn closure stack overflow
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2026-04-09 10:02:07 +04:00
Siavash Sameni
a3f54566d4 fix: call nativeSignalConnect from 8MB Java Thread, not Dispatchers.IO
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2026-04-09 09:50:30 +04:00
Siavash Sameni
76e9fe5e43 fix: single thread+runtime for signal lifecycle — avoids ring/libcrypto TLS conflict on pthread_exit
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2026-04-09 09:44:46 +04:00
Siavash Sameni
b0a89d4f39 docs: PRD for desktop direct calling backport + UI fixes
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2026-04-09 09:39:50 +04:00
Siavash Sameni
abc96e8887 refactor: separate SignalManager from WzpEngine for direct calling
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SignalManager (NEW):
- Dedicated Rust struct with its own QUIC connection to _signal
- Separate JNI handle (nativeSignalConnect/GetState/PlaceCall/etc)
- Kotlin wrapper polls state every 500ms via getState() JSON
- Lives independently of WzpEngine — survives across calls
- connect() blocks briefly on 8MB thread, then recv loop runs on dedicated thread

WzpEngine (CLEANED):
- Back to pure media-only role (audio, codec, FEC, jitter)
- Removed start_signaling/place_call/answer_call methods
- Removed signal_transport/signal_fingerprint from EngineState

CallViewModel:
- Two separate managers: signalManager (persistent) + engine (per-call)
- Two separate polling loops: signalPollJob + statsJob
- Auto-connect to media room when signal polling detects "setup" state
- hangupDirectCall() ends media but keeps signal alive

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-09 09:34:36 +04:00
Siavash Sameni
3a6ae61f8d fix: show real identity fingerprint (SHA-256 full format) on Android home screen
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2026-04-09 09:12:47 +04:00
Siavash Sameni
4c536d256b fix: install rustls crypto provider once in nativeInit, not per-thread (libcrypto TLS conflict)
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2026-04-09 09:07:40 +04:00
Siavash Sameni
b0ec9ff4ab fix: signal mode UI + place_call via stored signal transport
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- Don't set callState for signal-only states (prevents auto-join room)
- Store signal transport + fingerprint in EngineState after registration
- place_call/answer_call send directly via signal transport (not command channel)
- Spawn small threads for async signal sends (non-blocking)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-09 08:58:22 +04:00
Siavash Sameni
5855533a39 fix: start stats polling before blocking startSignaling call
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2026-04-09 08:38:06 +04:00
Siavash Sameni
ed09c2e8cc fix: use block_on pattern for signaling (same as start_call) — no thread::spawn
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2026-04-09 08:33:08 +04:00
Siavash Sameni
f44306cc17 fix: move ALL signaling code into JNI-spawned 8MB thread — zero Rust on caller stack
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2026-04-09 08:19:48 +04:00
Siavash Sameni
0b821585ab fix: call nativeStartSignaling from Java Thread with 8MB stack, not Kotlin IO dispatcher
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2026-04-09 08:10:22 +04:00
Siavash Sameni
faec332a8c fix: remove panic::catch_unwind from nativeStartSignaling — stack overflow on Android
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2026-04-09 08:04:47 +04:00
Siavash Sameni
fe9ae276dc fix: move all crypto/network work to spawned 8MB thread — Android stack too small
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2026-04-09 07:16:54 +04:00
Siavash Sameni
4fbf6770c4 fix: Android signal thread stack overflow + add version marker to UI
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- Spawn signaling on dedicated thread with 4MB stack instead of using
  Android's IO dispatcher thread (insufficient stack for tokio + QUIC)
- Add "direct-call-v1" version marker to home screen subtitle

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-09 07:10:07 +04:00
Siavash Sameni
30a893a73f fix: remove duplicate TextAlign import causing Android build failure
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2026-04-09 06:54:45 +04:00
Siavash Sameni
d46f3b1deb fix: show more Gradle output in build log for debugging
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2026-04-09 06:48:14 +04:00
Siavash Sameni
0d3f0d4dcb feat: Android UI for direct 1:1 calling
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- Mode toggle: "Room" vs "Direct Call" tabs on pre-connection screen
- Direct Call mode: Register button → registers on relay signal channel
- After registration: shows fingerprint dial pad + incoming call panel
- Incoming call: green Accept / red Reject buttons with caller info
- Ringing state display while waiting for callee
- CallSetup auto-connects to media room
- CallStats extended: sas_code, incoming_call_id/fp/alias fields
- CallViewModel: registerForCalls(), placeDirectCall(), answerIncomingCall()

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-09 06:18:07 +04:00
Siavash Sameni
c184d5e1f3 fix: build scripts use fetch+reset instead of pull to avoid ref lock errors
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git pull fails when refs are stale from concurrent builds. Switch to
git gc + git fetch + git reset --hard origin/branch for robustness.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-09 06:07:10 +04:00
Siavash Sameni
5d8e743cbf feat: Android engine + Kotlin API for direct 1:1 calling
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Rust engine:
- start_signaling(): persistent _signal connection, presence registration
- Signal recv loop: handles DirectCallOffer, CallRinging, CallSetup, Hangup
- New CallState variants: Registered, Ringing, IncomingCall
- Stats expose incoming_call_id, incoming_caller_fp, incoming_caller_alias, sas_code
- New EngineCommands: PlaceCall, AnswerCall, RejectCall

JNI bridge:
- nativeStartSignaling(relay, seed, token, alias)
- nativePlaceCall(targetFp)
- nativeAnswerCall(callId, mode)

Kotlin API (WzpEngine.kt):
- startSignaling(relay, seed, token, alias)
- placeCall(targetFingerprint)
- answerCall(callId, mode) — 0=Reject, 1=AcceptTrusted, 2=AcceptGeneric

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-09 06:02:48 +04:00
Siavash Sameni
6694aebfd9 fix: resolve 0.0.0.0 to connectable address in CallSetup relay_addr
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When relay listens on 0.0.0.0, derive the actual IP from the client's
connection address for the CallSetup message.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-09 05:56:19 +04:00
Siavash Sameni
d27e85ecf2 feat: SAS (Short Authentication String) for call identity verification
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Derive a 4-digit code from the shared DH secret via HKDF with label
"warzone-sas-code". Both peers compute the same code; a MITM relay
produces a different one. Users compare verbally during the call.

- CryptoSession::sas_code() -> Option<u32> on the trait
- ChaChaSession stores and returns the SAS
- HKDF derivation in WarzoneKeyExchange::derive_session()
- Tests: both peers match, MITM produces different code

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-09 05:48:08 +04:00
Siavash Sameni
39ac181d63 feat: ACL + capacity limit on call rooms, unified fingerprint format
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- Call rooms (call-*) restricted to the two authorized participants only
- Room capacity enforced at 2 for call rooms
- Unauthorized clients get immediate connection close
- Unified fingerprint format: SHA-256(Ed25519 pub)[:16] as xxxx:xxxx:...
  Used consistently in signal registration, handshake, and ACL checks

Tested: Alice+Bob authorized, attacker rejected with "not authorized"

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-09 05:43:03 +04:00
Siavash Sameni
3351cb6473 feat: direct 1:1 calling via relay signaling (Phase 1)
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New feature: call someone directly by fingerprint through the relay.

- Client connects with SNI "_signal" for persistent signaling
- RegisterPresence/RegisterPresenceAck for relay registration
- DirectCallOffer routed to target by fingerprint
- DirectCallAnswer with AcceptGeneric/AcceptTrusted/Reject modes
- Relay creates private room (call-{id}), sends CallSetup to both
- Both clients connect to private room for media (existing SFU path)
- Hangup forwarding + cleanup on disconnect
- Desktop CLI: --signal + --call <fingerprint> for testing
- CallRegistry tracks call state (Pending/Ringing/Active/Ended)
- SignalHub manages persistent signaling connections

Tested: Alice calls Bob by fingerprint, relay routes offer, Bob
auto-accepts, both join private room, media flows bidirectionally.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-09 05:35:16 +04:00
Siavash Sameni
54a4d91f3e docs: add --event-log, --version-check, and federation troubleshooting to admin guide
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Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-09 04:43:37 +04:00
Siavash Sameni
3b962bd4cb fix: build scripts use git reset --hard before pull to recover from dirty state
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Cargo.lock changes from Docker builds caused pull conflicts. Now uses
reset --hard + clean -fd to guarantee clean state before pulling.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-08 22:13:26 +04:00
Siavash Sameni
1118eac752 fix: re-enable FEC + time-based dedup for federation
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Restore fec_ratio=0.2 on GOOD profile. Time-based dedup (2s TTL) with
payload hash prevents consecutive sender collisions while still catching
multi-path duplicates. Verified: 6 consecutive senders across 2 relays,
0 decode errors, 0 drops, FEC active.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-08 22:09:15 +04:00
Siavash Sameni
f935bd69cd fix: rewrite seq/fec for federation-delivered packets
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- Time-based dedup (2s TTL) replaces fixed-window dedup — consecutive
  senders with same seq numbers no longer collide
- Raw byte forwarding for federation local delivery (no re-serialization)
- Jitter buffer resets on large backward seq jumps (>100)
- recv_media skips malformed datagrams instead of returning connection-closed
- SIGTERM handler for clean QUIC shutdown on wzp-client
- JSONL event log infrastructure (--event-log flag) for protocol analysis
- FEC disabled on GOOD profile for federation debugging (fec_ratio=0.0)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-08 21:55:06 +04:00
Siavash Sameni
1c684f6b47 fix: rewrite seq/fec for federation-delivered packets
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Federation media from different senders had conflicting seq numbers,
FEC block IDs, and Opus decoder state. The relay now assigns fresh
monotonic seq/fec_block/fec_symbol to all federation-delivered packets,
ensuring clients see a clean continuous stream regardless of sender changes.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-08 15:48:55 +04:00
Siavash Sameni
c92db7e9b7 fix: preserve original relay label through multi-hop presence propagation
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When propagating GlobalRoomActive to other peers, use tagged participants
(with relay_label set to the originating relay) instead of the raw
untagged participants. This shows "Relay C" instead of "Relay B" when
C's participants are forwarded through hub B to A.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-08 15:34:22 +04:00
Siavash Sameni
c3bd657224 fix: FEC decoder resets stale blocks — fixes consecutive federation connects
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When a new sender reuses the same block_id values as a previous sender,
the FEC decoder was silently dropping all data because blocks were marked
as "already decoded". Now blocks older than 2 seconds are automatically
reset when new data arrives for them.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-08 15:26:00 +04:00
Siavash Sameni
8b79cdc6fc fix: dedup filter collision between different senders + build scripts default --pull
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- Dedup key now includes source peer fingerprint hash, preventing
  packets from different senders with same room+seq from being dropped
  as duplicates (was silently killing all multi-hop audio)
- Build scripts default to --pull (use --no-pull to skip)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-08 15:18:52 +04:00
Siavash Sameni
2eab56beec fix: federation presence dedup, stale cleanup, and Android SIGSEGV crash
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- Deduplicate remote participants by fingerprint in all merge sites
  (canonical == raw room name caused double-lookup, doubling every remote participant)
- GlobalRoomInactive now propagates updated participant list to other peers
  (hub relay B was not informing A when C's participants left)
- Add 15-second stale presence sweeper that purges remote participants
  from peers that stop sending data (safety net for QUIC timeout delays)
- Add @Synchronized to WzpEngine.getStats/stopCall/destroy to prevent
  TOCTOU race between stats polling coroutine and engine teardown (SIGSEGV)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-08 15:07:59 +04:00
Siavash Sameni
7dadc1ddd6 fix: default room 'general', cap auto codec at 24k
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- Android default room changed from 'android' to 'general'
- Relay choose_profile capped at GOOD (Opus 24k) — studio tiers
  (32k/48k/64k) cause high packet loss on federation paths due to
  larger datagrams exceeding path MTU. Will re-enable after MTU
  discovery is implemented.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-08 14:41:12 +04:00
Siavash Sameni
be0441295a fix: read git hash outside Docker for Linux build ntfy notification
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The hash was read inside Docker (/build/source) where .git doesn't
exist. Now reads from $BASE_DIR/data/source before Docker runs.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-08 14:32:03 +04:00
Siavash Sameni
b9f4e7f102 feat: include git hash in ntfy build notifications + MTU PRD
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ntfy messages now show: "WZP Linux [abc1234] ready!" and
"WZP Android [abc1234] done! APK: url" so you can verify which
commit was built without checking relay version remotely.

Also added PRD-mtu-discovery.md for QUIC Path MTU Discovery.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-08 14:26:13 +04:00
Siavash Sameni
28f4a0fb6f fix: multi-hop presence — propagate remote rooms on new peer connect
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When a new federation link is established, announce not only LOCAL
global rooms but also rooms from OTHER peers (remote_participants).
This fixes multi-hop: when R2 connects to R3, R2 tells R3 about
R1's rooms that R2 learned about earlier.

Previously, only local rooms were announced on link setup. If R1
had a client but R2 had no clients, R2 wouldn't tell R3 about R1.

Also added diagnostic logging for room announcements on link setup.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-08 13:43:15 +04:00
Siavash Sameni
3d76acf528 fix: multi-hop federation — hub relay forwards without local participants
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Three fixes for 3-relay chain (R1→R2→R3):

1. Room lookup in handle_datagram: hub relay (R2) has no local
   participants, so active_rooms() was empty and datagrams were
   silently dropped. Now also checks global_rooms config directly,
   allowing hub relays to forward without local clients.

2. Multi-hop forwarding: removed active_rooms filter — forward to
   ALL connected peers except source. The receiving peer decides
   whether to deliver or forward further.

3. Android relay_label: native RoomMember now includes relay_label
   from RoomUpdate signal. Kotlin UI reads it for relay grouping.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-08 13:33:44 +04:00
Siavash Sameni
f4b5996bdf feat: Android relay-grouped participant list matching desktop
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Participants now grouped by relay on Android:
- Green dot + "THIS RELAY" for local participants
- Blue dot + relay label for federated participants

Added relayLabel to RoomMember data class, parsed from
relay_label JSON field. UI groups and renders with headers.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-08 13:15:12 +04:00
Siavash Sameni
fc721c4217 fix: clear stale federated presence on GlobalRoomInactive
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When a remote relay's room goes inactive (all participants left),
the receiving relay now:
1. Clears remote_participants for that peer+room
2. Broadcasts updated RoomUpdate to local clients with the remote
   participant removed
3. Updates federation_active_rooms metric

Previously, remote participants lingered in the participant list
after disconnect, causing ghost entries and stale media forwarding.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-08 13:06:48 +04:00
Siavash Sameni
5c24adf1c1 feat: remote version query — wzp-client --version-check <relay>
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Connects to a relay over QUIC with SNI "version", reads build hash
from a unidirectional stream, prints "<relay> <git-hash>" and exits.

Usage: wzp-client --version-check 172.16.81.175:4434
Output: 172.16.81.175:4434 8dbda3e

Relay side: detects "version" SNI, opens uni stream, writes
BUILD_GIT_HASH, waits 100ms for client to read, closes.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-08 12:47:37 +04:00
Siavash Sameni
8dbda3e052 feat: --version flag with git hash + test script kill fix
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wzp-relay --version prints "wzp-relay <short-git-hash>".
Build hash also logged on startup: version=abc1234.
Enables verifying deployed relay matches expected build.

Also fixed federation-test.sh: use kill -INT (not SIGTERM) so
clients save recordings before exit. Added save delay.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-08 12:36:33 +04:00
Siavash Sameni
c8a3aaacb6 feat: comprehensive federation test harness
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7 test scenarios across 3 relays:
1. Basic 2-relay audio (A→B)
2. Reverse direction (B→A)
3. 3-relay chain (A→B→C)
4. File playback (60s test audio)
5. Reconnection (join/leave/rejoin)
6. Multi-participant (3 users on 3 relays)
7. Simultaneous senders (2 senders, 1 recorder)

Usage: ./scripts/federation-test.sh <relay1> <relay2> <relay3>

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-08 12:19:15 +04:00
Siavash Sameni
54cb6c3b71 feat: relay_label in RoomParticipant + tagged remote participants
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RoomParticipant.relay_label identifies which relay a participant is
connected to. Local participants have None, federated participants
get tagged with the peer relay's label when storing remote_participants.

This enables clients to group participants by relay in the UI.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-08 11:22:53 +04:00
Siavash Sameni
a3ebf5616f fix: unified raw room names + merged presence on join
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1. CLI client now sends raw room names (no hash), matching Android
   JNI and Desktop Tauri. All three clients are now consistent.

2. When a client joins a global room, the relay merges federated
   remote participants into the initial RoomUpdate. Previously,
   clients that joined after the GlobalRoomActive signal only saw
   local participants. Now they see everyone immediately.

3. Added get_remote_participants() to FederationManager for querying
   cached remote participants from all peer links.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-08 11:09:15 +04:00
Siavash Sameni
ff6d0444c0 feat: federation Prometheus metrics — peer status, packets, active rooms
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Wires up the existing RelayMetrics federation fields:
- wzp_federation_peer_status{peer} — 1=connected, 0=disconnected
- wzp_federation_packets_forwarded_total{peer,direction} — in/out counts
- wzp_federation_active_rooms — number of active federated rooms

These are critical for monitoring federation health and will feed into
the adaptive codec selection system (PRD-coordinated-codec.md).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-08 11:00:13 +04:00
Siavash Sameni
8080713098 feat: federated presence — RoomUpdate includes remote participants
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GlobalRoomActive signal now carries participant list from the
announcing relay. When received, the relay:
1. Stores remote participants per peer link
2. Broadcasts merged RoomUpdate to local clients (local + all remote)

This means clients on different relays can now SEE each other in the
participant list. Also fixes build: removed non-existent metric field
references that were added by linter.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-08 10:52:27 +04:00
Siavash Sameni
e813362395 feat: federation metrics + dedup + rate limiting
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Add Prometheus metrics for federation links (per-peer RTT, packet
counters, active rooms gauge, dedup/rate-limit drop counters).

Add dedup filter (4096-entry ring buffer) to drop duplicate packets
arriving via multiple federation paths. Add per-room token bucket
rate limiter (500 pps) to prevent amplification.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-08 10:36:26 +04:00
Siavash Sameni
d52b8befd6 fix: canonical room hash for federation — handles hashed vs raw room names
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Different clients send different room names:
- Android: raw "general" as SNI
- Desktop: hash_room_name("general") = "f09ae11d..." as SNI

Federation datagrams are tagged with an 8-byte room hash. Previously,
each relay computed the hash from the client-provided room name,
causing mismatches between relays with different client types.

Fix: resolve_global_room() maps any room name (raw or hashed) to the
canonical [[global_rooms]] name. global_room_hash() always uses the
canonical name for federation hashing. handle_datagram uses both raw
and canonical hash matching to find the local room.

Also: run_participant now receives the pre-computed federation_room_hash
so the egress uses the canonical hash, not the client-specific name.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-08 10:31:26 +04:00
Siavash Sameni
0abecf7fd8 feat: adaptive quality engine + codec indicator UI
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Wire AdaptiveQualityController into Android engine for auto codec
switching based on network quality reports. Add color-coded TX/RX
codec badges to the in-call screen showing active codecs and Auto mode.

- Recv task: ingest QualityReports, feed to controller, signal profile
  changes via AtomicU8 to send task
- Send task: check for pending profile switch at frame boundaries,
  update encoder/FEC/frame size
- Track peer codec from incoming packet headers
- Kotlin UI: codec badges (blue=studio, green=good, amber=degraded,
  red=catastrophic) with Auto tag
- Add .taskmaster to .gitignore

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-08 10:19:11 +04:00
Siavash Sameni
f4cc3b1a6b fix: forward media to ALL connected peers, not just those with room active
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The bug: when a local client joins a global room and sends media, the
egress task checked peer_links.active_rooms to decide where to forward.
But active_rooms tracks what PEERS announced (their rooms), not what
WE announced. So our own GlobalRoomActive signal went out but our
peer_links had empty active_rooms — media was dropped.

Fix: for locally-originated media, send to ALL connected federation
peers unconditionally. The receiving relay decides whether to deliver
to local participants (if it has the room) or forward further. This
is correct because federation peers are explicitly configured — if
they're connected, they should receive global room media.

Multi-hop forwarding (handle_datagram) still filters by active_rooms
to prevent loops — only forwards to peers that announced the room.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-08 10:09:50 +04:00
Siavash Sameni
af4c89f5f0 docs: PRD for delegated trust in relay federation
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Addresses the trust gap where a hub relay can forward media from
unknown relays without the receiving relay's consent. Introduces
delegate=true flag on [[trusted]] entries: when set, the relay
accepts media forwarded through the trusted peer from relays it
vouches for. Without delegate, only direct media is accepted.

Covers: FederationTrustChain signal, origin authorization checks,
TTL for chain depth limiting, anti-spam properties. 5 phases, ~3 days.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-08 10:00:21 +04:00
Siavash Sameni
406461d460 feat: personalized config generation with --listen addr + own fingerprint
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When --config points to a non-existent file, the relay now generates
a personalized example config that includes:
- listen_addr matching the --listen flag (not hardcoded 0.0.0.0:4433)
- Pre-filled [[peers]] section with this relay's detected IP, port,
  and TLS fingerprint — ready to copy/paste into other relay configs

This makes setting up federation much easier: start each relay, it
generates its config with its own peering info commented out, you
just uncomment and copy between configs.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-08 09:38:28 +04:00
Siavash Sameni
7064f484af feat: -c/--config and -i/--identity flags for multi-instance relay
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Enables running multiple relays on the same machine:
  wzp-relay -c ~/.wzp1/config.toml -i ~/.wzp1/relay-identity --listen :4433
  wzp-relay -c ~/.wzp2/config.toml -i ~/.wzp2/relay-identity --listen :4434
  wzp-relay -c ~/.wzp3/config.toml -i ~/.wzp3/relay-identity --listen :4435

Config auto-creation: if the config file doesn't exist, writes an
example config with all fields documented and commented. The relay
starts with defaults but the file is ready to edit.

Identity auto-generation: if the identity file doesn't exist, generates
a new random seed (OsRng via wzp_crypto::Seed::generate) and saves it.
Subsequent starts load the same identity.

Short flags: -c for --config, -i for --identity.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-08 09:18:48 +04:00
Siavash Sameni
1d2222a25a debug: add datagram receive + multi-hop forward error logging
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Added logging to trace federation media flow:
- media_task logs first + every 250th received datagram (count, len)
- handle_datagram multi-hop forward logs errors (was silently dropped)
- forward_to_peers logs when no peer matches

2-relay (A→B): WORKING — full audio received, 300 packets forwarded
3-relay (A→B→C): B receives datagrams from A but only 1 arrives —
  remaining packets not received, likely a QUIC read_datagram issue
  when handle_datagram holds locks during processing. Needs further
  investigation into async lock contention or datagram buffering.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-08 08:45:54 +04:00
Siavash Sameni
270e139f20 feat: federation media forwarding WORKING — global rooms router model complete
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2-relay test: 5.0s audio, RMS 4748, PASS. Full pipeline verified:
- Room correctly identified as global (hash matching works)
- Federation egress channel created and connected
- GlobalRoomActive signals exchanged between peers
- 300 packets (250 source + 50 FEC) forwarded via tagged datagrams
- Client B on relay B received full 5-second tone from client A on relay A

Added debug logging: is_global check, egress channel creation, per-peer
forwarding with active_rooms diagnostic when no match found. Also logs
egress packet count (first + every 250th).

Multi-hop propagation: GlobalRoomActive signals forwarded to other peers
so A→B→C chain knows about rooms across the full mesh.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-08 08:31:37 +04:00
Siavash Sameni
d9b2e0fd53 docs: comprehensive documentation — design, architecture, admin, user guide
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4 files, 2,511 lines covering the entire WarzonePhone project:

DESIGN.md (591 lines): system overview, codec system (9 variants),
FEC (RaptorQ), transport (QUIC/quinn), security (Ed25519/X25519/
ChaCha20/HKDF/BIP39/TOFU), federation (global rooms), jitter buffer.
Mermaid diagrams for audio pipelines and crate dependencies.

ARCHITECTURE.md (874 lines): 15 mermaid diagrams — system overview,
encode/decode pipelines, relay SFU, federation topology/protocol,
signal handshake, client architectures (desktop/android/CLI), wire
format tables (MediaHeader/MiniHeader/QualityReport), project tree.

ADMINISTRATION.md (587 lines): relay deployment (binary/Docker/systemd),
complete TOML config reference, CLI flags table, federation setup
(peers/trusted/global_rooms), 3 example configs, Prometheus metrics,
auth, identity persistence, 12-item troubleshooting guide.

USER_GUIDE.md (459 lines): all clients — desktop (settings, quality
slider, key warning, shortcuts), Android (8-level quality slider,
server management, identity backup), CLI (flags table, 8 usage
patterns). Identity system, quality profiles when-to-use guide.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-08 08:21:13 +04:00
Siavash Sameni
898c1ea32b docs: PRDs for P2P direct calls and coordinated codec switching
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PRD-p2p-direct.md: STUN-based NAT traversal for direct QUIC
connections between clients. True E2E with mutual TLS cert pinning
via identity fingerprints. Hybrid mode: try P2P, fall back to relay.
4 phases: STUN discovery, hole punching, P2P adaptive quality,
seamless relay-to-P2P migration.

PRD-coordinated-codec.md: Relay acts as quality judge — monitors
per-participant loss/RTT/jitter, sends quality directives. Downgrade
is immediate (match weakest link), upgrade is consensual (all
participants must agree, synchronized switch at agreed timestamp).
Covers asymmetric encoding in SFU and P2P→relay backporting strategy.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-08 08:12:12 +04:00
Siavash Sameni
b00db5dfdc feat: federation rewrite — global rooms router model
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Major rewrite of relay federation replacing virtual participants with
a clean router model:

1. Global rooms: [[global_rooms]] in TOML config declares rooms that
   are bridged across federation. Each relay is a router + local SFU.

2. Room events: RoomManager emits LocalJoin/LocalLeave via broadcast
   channel when rooms transition between empty and non-empty.

3. GlobalRoomActive/Inactive signals: relays announce when they have
   local participants in global rooms. Peers track active state and
   forward media accordingly. Announcements propagate for multi-hop.

4. Media forwarding: separated from SFU loop. Local participant sends
   via mpsc channel → egress task → forward_to_peers() → room-hash
   tagged datagrams to active peer links. Inbound datagrams delivered
   to local participants + forwarded to other active peers (multi-hop).

5. Loop prevention: don't forward back to source relay.

6. Room name hashing: is_global_room() checks both plain name and
   hash (clients hash room names for SNI privacy).

Removed: ParticipantSender::Federation, federated_participants, virtual
participant join/leave, periodic room polling. Rooms now only contain
local participants.

Signaling tested: 3-relay chain (A→B←C) correctly propagates
GlobalRoomActive through B to both A and C. Media forwarding plumbing
in place but needs final debugging.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-08 07:54:38 +04:00
Siavash Sameni
bc8bb3d790 feat: [[trusted]] config + FederationHello for one-sided federation
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- Added [[trusted]] config: relay B can accept inbound federation
  from relay A by fingerprint alone, without knowing A's address.
  A connects to B with [[peers]], B trusts A with [[trusted]].

- FederationHello signal: outbound connections send their TLS
  fingerprint as first signal. The accepting relay verifies it
  against [[peers]] (by IP) or [[trusted]] (by fingerprint).

- Tested 3-relay chain: A→B←C. Both A and C connect to B, B trusts
  both. B correctly accepts both inbound connections. Room
  announcements flow A→B and C→B.

- Remaining: B needs to announce rooms back to A and C on the same
  connection so media can flow A→B→C. Currently A has no virtual
  participant for B, so media doesn't reach B's SFU for forwarding.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-08 06:49:20 +04:00
Siavash Sameni
ea51d068e6 feat: --debug-tap for relay packet header logging
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Adds --debug-tap <room> flag (or debug_tap in TOML config) that logs
every media packet's header metadata passing through a room. Use '*'
for all rooms.

Output (via tracing target "debug_tap"):
  TAP room=... dir=in addr=... seq=31 codec=Opus24k ts=520
      fec_block=5 fec_sym=1 repair=false len=65 fan_out=1

Shows: direction, source address, sequence number, codec ID, timestamp,
FEC block/symbol, repair flag, payload size, and fan-out count.
No decryption needed — headers are not encrypted.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-08 06:34:22 +04:00
Siavash Sameni
7271942c6a feat: federation media forwarding working — audio crosses between relays
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Added debug logging to federation signal path. Fixed the announce/recv
flow: outbound link's announce_task sends FederationRoomJoin, peer's
inbound signal_task receives it and creates virtual participant.

Tested: two relays on localhost with mutual TOML config, client A
sends tone via relay A, client B records via relay B — audio received
through federation (0.1s/RMS 7291/PASS).

Room announcement delay is ~1s (poll interval). The full pipeline:
client join → room created → announce_task detects → sends signal →
peer receives → creates virtual participant → SFU loop forwards
media via room-hash-tagged datagrams → peer demuxes → local delivery.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-08 06:26:49 +04:00
Siavash Sameni
da84ed332c docs: PRD for protocol analyzer — relay debug tap + full analyzer tool
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Two tools:
1. --debug-tap on relay: logs packet header metadata (seq, codec, ts,
   FEC, repair, size) per room without decryption. 0.5 day effort.
2. wzp-analyzer standalone: joins room as observer, decodes audio,
   shows TUI with per-participant waveforms + quality stats + FEC
   recovery rates. Capture/replay and HTML reports. 5-8 days total.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-08 05:57:27 +04:00
Siavash Sameni
e50925e05a fix: IP-based peer matching for inbound federation + room announcements
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- Inbound federation connections now matched by source IP against
  configured peer URLs (QUIC clients don't present TLS certs, so
  fingerprint matching fails for inbound direction).
- Added periodic room announcement task (1s poll) that sends
  FederationRoomJoin to peers when new rooms appear with local
  participants. Handles rooms created after federation link is up.
- Added find_peer_by_addr() to FederationManager.

Federation link topology: each relay pair has 2 connections (outbound
from each side). Outbound sends signals, peer's inbound receives them.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-08 05:49:37 +04:00
Siavash Sameni
6be36e43c2 feat: relay federation infrastructure — room bridging, loop prevention, peer connections
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Phase 1 of relay federation:

1. Signal messages: FederationRoomJoin/Leave/ParticipantUpdate added
   to SignalMessage enum for relay-to-relay room coordination.

2. Room changes: ParticipantOrigin (Local/Federated) tracking, loop
   prevention (federated media only forwards to local participants),
   ParticipantSender::Federation with 8-byte room-hash prefixed
   datagrams, merged participant lists (local + remote), new methods:
   join_federated(), update_federated_participants(), local_senders(),
   active_rooms(), local_participants().

3. FederationManager: connects to configured peers via QUIC with SNI
   "_federation", reconnects with exponential backoff (5s-300s),
   exchanges FederationRoomJoin signals, runs recv loops for both
   signals and media datagrams, creates virtual participants in rooms.

4. Accept-side: _federation SNI handling in main.rs, unknown peer
   gets helpful "add to relay.toml" log message, recognized peers
   handed off to FederationManager.

TODO: TLS fingerprint verification — currently outbound connections
use client_config() which doesn't present a cert, so inbound
verification fails. Need mutual TLS or URL-based peer matching.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-07 22:30:18 +04:00
Siavash Sameni
2f2720802d feat: TOML config file with federation peers + --config flag 
The relay now supports loading configuration from a TOML file via
--config <path>. CLI flags override TOML values. All fields have
serde defaults so a minimal config only needs what you want to change.

Example relay.toml:
  listen_addr = "0.0.0.0:4433"
  [[peers]]
  url = "193.180.213.68:4433"
  fingerprint = "1a:39:38:..."
  label = "Pangolin EU"

Federation hint on startup now shows TOML format with TLS fingerprint
(not Ed25519 identity fingerprint), since TLS fingerprint is what
peers actually verify. Configured peers are logged on startup.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-07 22:13:56 +04:00
Siavash Sameni
087bfd2335 feat: deterministic TLS certificate from relay identity seed 
The relay's TLS certificate is now derived from the persisted
Ed25519 seed via HKDF, so the same seed produces the same cert
and the same TLS fingerprint across restarts. This fixes the
"Server Key Changed" warnings on every relay restart.

Implementation: HKDF-SHA256(seed, "wzp-tls-ed25519") → Ed25519
signing key → PKCS8 DER → rcgen KeyPair → self-signed cert.

Also adds tls_fingerprint() helper (SHA-256 of DER cert, hex with
colons) and prints it on startup. This is the prerequisite for
relay federation (peers verify each other by TLS fingerprint).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-07 22:10:08 +04:00
Siavash Sameni
0a05e62c7f feat: relay prints federation peering config on startup
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On startup, the relay detects its outbound IP (via UDP socket trick)
and prints a ready-to-copy YAML snippet for other relays to federate:

  federation: to peer with this relay, add to peers config:
    - url: "193.180.213.68:4433"
      fingerprint: "a5d6:e3c6:..."

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-07 21:37:10 +04:00
Siavash Sameni
b97f32ce46 docs: PRD for relay federation (multi-relay mesh) + identity fix
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Documents the relay TLS identity bug (cert regenerates on restart
because server_config() creates a new keypair every time, ignoring
the persisted Ed25519 seed) and the full federation design:

- YAML config with mutual peer trust (url + fingerprint)
- QUIC connections between peers, fingerprint verification
- Room bridging: media forwarding for shared room names
- Merged participant presence across relays
- Helpful log message for unconfigured peer connection attempts
- No transcoding, no re-encryption, no central coordinator

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-07 21:33:05 +04:00
Siavash Sameni
d66d583583 docs: PRD for adaptive quality control (auto codec)
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Covers the full design for runtime codec switching based on network
conditions: 3-tier basic (GOOD/DEGRADED/CATASTROPHIC), extended
5-tier with studio levels, and bandwidth probing. Details the
existing QualityAdapter infrastructure, what's missing (report
ingestion, profile switch loop, cross-task signaling via AtomicU8),
and implementation plan for both Android and desktop engines.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-07 21:25:33 +04:00
Siavash Sameni
d06cf66538 fix: auto codec, force-ping button, relay delete button
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1. Auto codec: new "Auto" position on quality slider (JNI index 7).
   When selected, the engine uses the relay's chosen_profile from
   CallAnswer instead of the local preference. Slider now has 8
   positions: Studio 64k → Auto → Codec2 1.2k.

2. Force ping: added refresh button (↻) in Manage Relays dialog
   header. Calls pingAllServers() to re-check all relays on demand.

3. Delete relay fix: the X button was inside a Surface(onClick=...)
   which swallowed the touch event. Replaced with a separate Surface
   that properly intercepts the click.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-07 21:22:24 +04:00
Siavash Sameni
c8bcc5c974 fix: advertise studio profiles in handshake supported_profiles
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The CallOffer only advertised GOOD/DEGRADED/CATASTROPHIC. When a
client uses a studio profile, the relay's choose_profile couldn't
pick it. Now advertises all 6 profiles (studio 64k/48k/32k + good +
degraded + catastrophic) in both Android engine and shared handshake.

Also: the relay MUST be rebuilt with the new CodecId variants,
otherwise it will fail to deserialize CallOffer messages containing
studio QualityProfiles in supported_profiles.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-07 19:39:31 +04:00
Siavash Sameni
760126b6ab fix: remove duplicate Kotlin imports causing build failure
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Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-07 19:17:33 +04:00
Siavash Sameni
53f8bf8fff feat: full quality tiers + slider UI + key-change warning on Android
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1. Wire protocol: add Opus 32k/48k/64k (CodecId 6/7/8) + STUDIO
   profiles with is_opus() helper. Opus enc/dec accept all Opus variants.

2. JNI bridge: expand profile_from_int to 7 levels (0-6) mapping to
   GOOD, DEGRADED, CATASTROPHIC, Codec2_3200, STUDIO_32K/48K/64K.

3. Settings UI: replace radio buttons with Material3 Slider — 7 stops
   from Studio 64k (green) to Codec2 1.2k (dark red), matching desktop.

4. Key-change warning: AlertDialog on connect when server fingerprint
   has changed. Shows old vs new fingerprint, Accept New Key or Cancel.
   Accepting saves the new fingerprint and proceeds with the call.

5. Engine recv: handle studio codec IDs in auto-switch path.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-07 19:11:29 +04:00
Siavash Sameni
b3cdad0c75 fix: copy libc++_shared.so from NDK when cargo-ndk skips it
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cargo-ndk doesn't always copy libc++_shared.so into jniLibs. The
build script now finds it in the NDK and copies it manually if
missing, preventing the build check from failing.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-07 18:06:28 +04:00
Siavash Sameni
fa3c7f1cef fix: dynamic frame sizing for non-default quality profiles on Android
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The send loop was hardcoded to 960 samples (20ms/Opus24k), causing
DEGRADED (Opus 6k, 40ms) and CATASTROPHIC (Codec2 1200, 40ms) to
fail — the encoder needed 1920 samples but only got 960.

Changes:
- capture_buf, ring read threshold, and timestamp increment are now
  computed from profile.frame_duration_ms (960 for 20ms, 1920 for 40ms)
- decode_buf sized to MAX_FRAME_SAMPLES (1920) to handle any incoming codec
- recv codec switch now uses correct QualityProfile per codec (was
  inheriting original profile's frame_duration_ms, breaking cross-codec)
- added ComfortNoise guard on recv path

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-07 18:00:27 +04:00
Siavash Sameni
68b56d9172 fix: ping every 5min (was 5s), clean endpoint on failure, never block connect
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- Ping interval: 5 minutes (was 5 seconds — too aggressive)
- Rust ping_relay: explicitly close endpoint + shutdown runtime on failure
- Connect button works regardless of ping status (never blocked)
- Ping failure doesn't corrupt engine state

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-07 11:40:14 +04:00
Siavash Sameni
7973c8c6a3 fix: ntfy failure notification on build error (trap ERR)
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Both Android and Linux build scripts now send ntfy notification
when build fails, not just on success.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-07 11:23:32 +04:00
Siavash Sameni
3e9539e5da fix: add libasound2-dev to Docker image for Linux audio builds
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Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-07 11:16:39 +04:00
Siavash Sameni
a1ccb3f390 feat: Linux x86_64 fire-and-forget Docker build on SepehrHomeserverdk
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Same Docker image as Android build. Separate cache dirs (cache-linux/)
to avoid conflicts when running both builds simultaneously.

Builds: wzp-relay, wzp-client, wzp-client-audio, wzp-web, wzp-bench
Uploads tar.gz to rustypaste, notifies ntfy.sh/wzp.

Usage:
  ./scripts/build-linux-docker.sh --pull         # fire and forget
  ./scripts/build-linux-docker.sh --pull --install # wait + download

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-07 11:09:01 +04:00
Siavash Sameni
7751439e2b feat: relay identity persistence + Linux build script
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Relay identity:
- Stored in ~/.wzp/relay-identity (hex-encoded 32-byte seed)
- Generated on first run, reused on restart
- Fingerprint stays consistent across relay restarts

Linux build script (scripts/build-linux-notify.sh):
- Fire and forget: Hetzner VM → build all binaries → upload to rustypaste → ntfy notify → destroy VM
- Builds: wzp-relay, wzp-client, wzp-client-audio, wzp-web, wzp-bench
- Packages as tar.gz, uploads to rustypaste
- --keep flag to preserve VM

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-07 11:05:49 +04:00
Siavash Sameni
20bc290c18 fix: relay handles ping connections gracefully (no timeout errors)
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Relay recognizes SNI "ping" and returns immediately — no handshake,
no stream accept, no timeout error logs. Client closes after QUIC
connect for RTT measurement.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-07 11:01:03 +04:00
Siavash Sameni
a8dc350a65 feat: codec selection in settings (Opus / Opus Low / Codec2)
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- Settings UI: radio buttons for encode codec selection
- Persisted via SettingsRepository
- Passed through WzpEngine.startCall(profile=) → JNI → Rust CallStartConfig
- Decode always accepts all codecs (per-packet codec_id switch)
- 0 = Opus 24k (GOOD), 1 = Opus 6k (DEGRADED), 2 = Codec2 1.2k (CATASTROPHIC)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-07 10:50:01 +04:00
Siavash Sameni
00fa109f07 feat: codec2 support — adaptive encoder/decoder, per-packet codec switch
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Android engine:
- Use wzp_codec::create_encoder/create_decoder (factory) instead of
  hardcoded OpusEncoder/OpusDecoder
- Recv path: auto-switch decoder based on incoming packet's codec_id
- Supports mixed-codec rooms (one client Opus, another Codec2)

Desktop client already uses factory functions — no changes needed.

Codec selection via QualityProfile:
- GOOD: Opus 24kbps
- DEGRADED: Opus 6kbps
- CATASTROPHIC: Codec2 1200bps

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-07 10:34:14 +04:00
Siavash Sameni
1e40dec468 feat: periodic server ping every 5s while app is open
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Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-07 10:13:51 +04:00
Siavash Sameni
aecef0905d feat: fire-and-forget build script with ntfy + rustypaste
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- Uploads build script to remote, runs in tmux (survives SSH drop)
- Builds Rust + APK in Docker
- Validates both .so files present before APK build
- Uploads APK to rustypaste
- Sends ntfy.sh/wzp notification with download URL
- --install flag: waits + downloads + adb installs locally
- --rust flag: force clean Rust rebuild
- --pull flag: git pull before building

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-07 10:00:49 +04:00
Siavash Sameni
18f7faa279 fix: ping as engine instance method — same lifecycle as call
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Ping was a static JNI method that loaded the .so before nativeInit,
crashing jemalloc. Now ping is an instance method on WzpEngine:

- Engine is created once (nativeInit), reused for both ping and call
- pingRelay() uses same tokio runtime pattern as startCall()
- Auto-pings all servers on app launch (after engine init)
- No process restart needed
- TOFU fingerprints saved on first successful ping

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-07 09:49:33 +04:00
Siavash Sameni
eeb85aeac2 feat: ping-and-exit for server RTT, remove broken UDP ping
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- Ping button: pings all servers via native QUIC, saves RTT + fingerprint
  to SharedPreferences, then exits process (System.exit)
- On restart: loads saved ping results (no native .so loading needed)
- Avoids jemalloc crash: native lib only loaded once per process lifetime
- Removed broken UDP probe (QUIC servers don't respond to it)
- SettingsRepository: savePingRtt/loadPingRtt for cached results
- PingResult: added reachable field

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-07 09:31:02 +04:00
Siavash Sameni
00b405aa87 feat: debug recording off by default, toggle in settings
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- AudioPipeline.debugRecording defaults to false (was true)
- SettingsRepository: persist debug_recording preference
- CallViewModel: debugRecording StateFlow + setter, wired to AudioPipeline
- Only records PCM + RMS when explicitly enabled in settings

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-07 09:01:43 +04:00
Siavash Sameni
d09e21965e feat: pure Kotlin UDP ping — periodic every 5s, no JNI crash
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Replace WzpEngine.pingRelay() (JNI, loads native .so, crashes jemalloc
on Android 16 MTE) with pure Kotlin DatagramSocket UDP probe.

- RelayPinger: sends QUIC Version Negotiation trigger packet, measures
  RTT from response. No native lib, no JNI, zero crash risk.
- Periodic: pings all servers every 5 seconds via coroutine
- Server fingerprint: filled lazily on first real QUIC connection
  (TOFU still works, just delayed)
- Lock status: OFFLINE when ping fails, NEW until first connection

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-07 08:57:27 +04:00
Siavash Sameni
97bcc79f9b feat: desktop-style UI + docker build scripts, fix ping crash
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- InCallScreen rewrite matching desktop dark theme layout
- Removed auto-ping LaunchedEffect (loading native .so early via
  pingRelay crashes jemalloc on Android 16 MTE)
- Added Docker build scripts (Dockerfile.android-builder + build-android-docker.sh)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-07 08:19:45 +04:00
Siavash Sameni
264ef9c4d4 feat: relay ping with RTT, server TOFU, lock icons (Phase 2 backport)
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Rust JNI:
- nativePingRelay: QUIC connect with 3s timeout, returns RTT + server
  certificate fingerprint as JSON. Static method, no engine needed.

Kotlin:
- WzpEngine.pingRelay() static wrapper
- SettingsRepository: TOFU fingerprint persistence (tofu_{address} keys)
- CallViewModel: pingAllServers() coroutine, lockStatus() helper,
  PingResult/LockStatus data types
- InCallScreen: server chips show lock icon + RTT color (green/yellow),
  "Ping All" button

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-06 22:43:53 +04:00
Siavash Sameni
a9adb5cfd7 feat: identicons, tap-to-copy fingerprint, recent rooms (Phase 1 backport)
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Backport from desktop client to Android:

Identicons:
- New Identicon.kt composable: deterministic 5x5 symmetric Canvas pattern
  from fingerprint hash (same algorithm as desktop identicon.ts)
- Participant list shows identicon + name + tappable fingerprint
- Settings page shows identicon next to fingerprint

CopyableFingerprint:
- Tap any fingerprint text to copy to clipboard with Toast feedback
- Used in participant list and settings page

Recent rooms:
- SettingsRepository: persists last 5 (relay, room) pairs
- CallViewModel: saves on startCall, exposes as StateFlow
- InCallScreen: clickable chips that fill room + select matching server

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-06 22:37:46 +04:00
Siavash Sameni
a39b074d6e fix: DirectByteBuffer as class field — survives ART JIT OSR
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Previous attempt allocated DirectByteBuffer as local variables inside
runCapture/runPlayout. ART's JIT On-Stack Replacement nulled them
when recompiling the hot loop mid-execution.

Fix: allocate as class fields on AudioPipeline (captureDirectBuf,
playoutDirectBuf). Object fields live on the heap, immune to OSR
stack frame replacement.

Eliminates JNI array copies (GetShortArrayRegion/SetShortArrayRegion)
from the audio hot path, preventing ART GC SIGBUS crashes on
Android 16 with concurrent mark-compact GC.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-06 22:22:54 +04:00
Siavash Sameni
9cab6e2347 ci: skip build on CI-only file changes 
Add paths-ignore for .gitea/** so build.yml doesn't waste runner time
when only workflow files are modified.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-06 22:13:29 +04:00
Siavash Sameni
5e93cb74f2 fix: filter tracing to INFO for wzp crates, WARN for jni crate
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The jni crate emits VERBOSE logs for every JNI method lookup (~10 lines
per call, 100+ calls/sec on audio threads). This floods logcat, consumes
CPU, and triggers system kills. Filter to only show INFO+ for our crates
and WARN+ for everything else.

Also fix build script: clean full Rust target to ensure libc++_shared.so
is always copied by cargo-ndk.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-06 21:37:29 +04:00
Siavash Sameni
b56b4a759c revert: use ShortArray audio path (DirectByteBuffer causes null ptr crash)
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DirectByteBuffer.clear() crashes with null pointer in ART's JIT OSR
compiled code on Android 16. Revert AudioPipeline to use the original
ShortArray writeAudio/readAudio path.

The DirectByteBuffer JNI functions remain in WzpEngine.kt and
jni_bridge.rs for future use once the OSR issue is resolved.

The original SIGBUS from ART GC is rare (~1 crash per 8 min call)
and doesn't warrant the DirectByteBuffer approach until we can
allocate the buffer as a class field outside the hot loop.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-06 21:17:15 +04:00
Siavash Sameni
6f99841cc7 fix: cloud build script — filter by server name, rsync upload, cx33
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Details
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Details 
- Filter hcloud by SERVER_NAME to avoid touching other servers
- Use rsync instead of tar (handles submodules, no macOS xattr spam)
- Default server type cx33
- Release APK failure is non-fatal (debug APK still produced)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-06 20:00:10 +04:00
Siavash Sameni
3b0811ce2e ci: add GitHub mirror workflow 
Automatically pushes branches and tags to github.com:manawenuz/wzp.git
on every push to Forgejo. Uses GH_SSH_KEY secret for authentication.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-06 19:49:59 +04:00
Siavash Sameni
9eed94850d fix: DirectByteBuffer audio path — eliminate JNI array copies
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Details 
Adds nativeWriteAudioDirect / nativeReadAudioDirect JNI functions
that accept a DirectByteBuffer instead of ShortArray. The buffer's
native memory is accessed directly by Rust via pointer — no
GetShortArrayRegion / SetShortArrayRegion, no GC-managed array
copies on the audio hot path.

This fixes SIGBUS crashes on Android 16 where ART's concurrent
mark-compact GC crashes when flipping thread roots during JNI
array operations on MAX_PRIORITY audio threads.

Old ShortArray methods kept for backward compatibility.
AudioPipeline switched to use Direct variants.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-06 19:29:08 +04:00
Siavash Sameni
5e9718aeb2 docs: incident report — SIGBUS in ART GC during audio JNI calls
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Details 
Android 16's concurrent mark-compact GC crashes when flipping
thread roots on our MAX_PRIORITY audio threads during JNI calls
(AudioRecord.read / AudioTrack.write). Not our code — all crash
frames are in libart.so.

Proposed fixes:
- Short term: DirectByteBuffer to reduce JNI transitions
- Long term: Oboe native audio from Rust (no JNI, no GC)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-06 19:21:32 +04:00
Siavash Sameni
3093933602 fix: build script works on Ubuntu 24.04 (cmake 3.28) too
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Details 
cmake 3.28 works when ANDROID_NDK is set (not just ANDROID_NDK_HOME).
Relaxed version check from <=3.26 to <=3.30.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-06 19:00:06 +04:00
Siavash Sameni
4c6c909732 feat: comprehensive Android build script for Debian 12
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Details 
Documents WHY each version is pinned:
- cmake 3.25: 3.27+ rewrote Android-Determine.cmake with bugs
- NDK 26.1: NDK 27 scudo crashes on MTE devices (Nothing A059)
- JDK 17: Gradle 8.5 + AGP 8.2.0 official support
- ANDROID_NDK: cmake checks this, not ANDROID_NDK_HOME

Idempotent, works from clone or existing tree.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-06 18:37:12 +04:00
Siavash Sameni
33fab9a049 fix: vec allocation for AudioRing, catch_unwind on tracing init, profiling
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Details 
- AudioRing: use vec![].into_boxed_slice() instead of Box::new([]) to
  avoid 32KB stack allocation that crashes scudo on Android
- JNI bridge: wrap tracing_subscriber init in catch_unwind to survive
  sharded_slab allocation failures on some devices
- Engine: per-step encode profiling (avg_agc_us, avg_opus_us, avg_fec_us,
  avg_send_us) logged every 5 seconds in send stats

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-06 15:41:46 +04:00
Siavash Sameni
31d2306915 feat: per-step encode profiling in send task stats
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Details 
Adds average microsecond timings for each encode step:
- avg_agc_us: AGC processing
- avg_opus_us: Opus encoding
- avg_fec_us: FEC encode + repair generation
- avg_send_us: QUIC send_media
- avg_total_us: sum of above

Logged every 5 seconds in send stats. Resets each interval.
Use to identify which step is bottlenecking the encode loop
on devices where fps drops below 50.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-06 14:18:33 +04:00
Siavash Sameni
4af7c5f94c fix: AudioRing cursor desync + capture thread use-after-free
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Details 
AudioRing (reader-detects-lap architecture):
- Writer NEVER touches read_pos — fixes SPSC invariant violation
- Reader self-corrects when lapped (snaps read_pos forward)
- Power-of-2 capacity (16384 = 341ms) with bitmask indexing
- Added overflow_count and underrun_count diagnostics
- Wired ring health into engine stats and periodic logging

Capture thread use-after-free (drain latch):
- Added CountDownLatch(2) to AudioPipeline
- Audio threads count down after exiting their loops
- teardown() awaits latch (200ms timeout) before destroy()
- Guarantees no in-flight JNI calls when native handle is freed
- stopAudio() no longer nulls pipeline (teardown handles it)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-06 13:28:34 +04:00
Claude
6597b5bd86 docs: incident report + fix spec for capture thread use-after-free crash
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Details 
SIGSEGV on hangup: capture thread calls writeAudio() via JNI after
teardown() has freed the native engine handle. TOCTOU race between
the nativeHandle==0L check and destroy() on the ViewModel thread.

Fix: CountDownLatch(2) — audio threads count down after exiting loops,
teardown() awaits before destroy(). 2 Kotlin files, no Rust changes.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-06 09:21:35 +00:00
Claude
ae9d8526dd docs: implementation spec for AudioRing SPSC desync fix
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Details 
Complete spec for fixing the playout ring buffer cursor race that
causes 12-16s bidirectional silence mid-call. Includes exact code,
memory ordering rationale, unit tests, and verification steps.

Any agent can implement from this document alone.

See also: debug/INCIDENT-2026-04-06-playout-ring-desync.md

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-06 09:16:47 +00:00
Claude
4d54b6f9e4 docs: incident reports for send-task crash and playout ring desync
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Details 
Two root-caused bugs documented with full evidence:

1. Send task fatal exit on QUIC congestion (FIXED in 2092245)
   - send_media() Err(Blocked) caused break → killed entire call
   - Now drops packet and continues

2. Playout ring buffer cursor desync (ROOT-CAUSED, fix pending)
   - AudioRing::write() mutates read_pos from producer thread on overflow
   - Violates SPSC contract → reader/writer fight over read_pos
   - Causes 12-16s bidirectional silence ~25-30s into call
   - Both clients affected simultaneously

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-06 08:52:14 +00:00
Claude
2b3bdae440 fix: enable Rust tracing → Android logcat via tracing-android 
Rust tracing subscriber was never initialized — all info!/warn!/error!
calls in the engine went to /dev/null. This meant our send/recv health
logging was invisible and we couldn't confirm the congestion fix was
active.

Now initializes tracing-android layer on first nativeInit(), routing
all Rust logs to logcat under tag "wzp_android". Also expanded logcat
filter in DebugReporter to capture engine-level log lines.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-06 08:03:28 +00:00
Claude
20922455bd fix: send task crash on QUIC congestion + AEC toggle + debug reporter 
Root cause: send_media() returns Err(Blocked) when QUIC congestion
window is full. The send task treated ANY send error as fatal (break),
killing the entire call. Now send errors drop the packet and continue.

Also hardened recv task to survive transient errors and added health
logging (recv gap tracking, periodic stats) to both send and recv.

Relay: added comprehensive debug logging — recv gaps, lock contention,
forward latency, send errors — all per-participant with 5s stats.

Other changes:
- AEC toggle in Settings (persisted, applied on next call)
- Debug report: records call audio (WAV), RMS histogram (CSV), logcat,
  stats. Emailed as zip via Android share intent after call ends.
- Replaced LinearProgressIndicator with Box (compose version compat)
- FileProvider for sharing debug zip attachments

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-06 07:38:56 +00:00
Claude
e6564bab57 fix: mic mute crackling + add AEC/NoiseSuppressor + dedup room participants 
Mic mute: the send loop now zeros the capture buffer when muted instead
of relying on write_audio() to skip writes. Previously stale ring data
and AGC amplification of near-silence caused crackling artifacts.

AEC: attach Android's hardware AcousticEchoCanceler to the AudioRecord
session. Also attach NoiseSuppressor when available. Both are released
on capture stop.

Room UI: deduplicate participants by fingerprint so ghost entries from
stale relay state don't show duplicate names.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-06 06:06:35 +00:00
Claude
aebf9156c0 fix: dedup participants in UI, wait for QUIC close ack before exiting 
UI: deduplicate room participants by fingerprint so ghost entries from
stale relay state don't show duplicates.

Engine: after select! ends, call close_now() + connection.closed() with
500ms timeout to wait for the relay to acknowledge the CONNECTION_CLOSE.
Previously the close frame was queued but the runtime died before quinn
could retransmit if the first packet was lost.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-06 05:40:06 +00:00
Claude
9bbaec6b35 fix: use shutdown_timeout so QUIC CONNECTION_CLOSE actually gets sent 
shutdown_background() killed the tokio runtime before quinn could send the
CONNECTION_CLOSE frame on the wire, so the relay never knew the client left.
Now use shutdown_timeout(500ms) to give quinn time to flush the close frame,
matching the desktop client pattern (which uses 2s timeout).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-06 05:20:20 +00:00
Claude
dc66b60d18 fix: null alias display — Android JSONObject.optString returns literal "null" 
o.optString("alias", null) returns the string "null" when the JSON value
is JSON null. Use o.isNull() check first. Also handle empty fingerprint
edge case with "unknown" fallback.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-06 05:04:47 +00:00
Claude
a9c4260b4e fix: close QUIC connection on hangup so relay removes participant immediately 
stop_call() now calls close_now() on the stored transport handle before
killing the tokio runtime. This sends a QUIC CONNECTION_CLOSE frame so
the relay's recv loop breaks immediately, triggering leave() + RoomUpdate
broadcast. Previously the runtime was killed first, so transport.close()
never ran and the relay kept stale participants until idle timeout.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-06 04:58:24 +00:00
Claude
7eb136fcb3 fix: settings save button (back=discard), fix missing alias in featherchat tests 
- Settings now uses draft state — changes only persist on explicit Save
- Back button discards unsaved changes
- Added applyServers() for batch server updates
- Added missing alias field to CallOffer in featherchat tests

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-06 04:30:23 +00:00
Claude
550a124972 fix: add missing alias arg to perform_handshake call in wzp-web 
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-06 04:15:24 +00:00
Claude
0835c36d0f feat: settings page with persistence, client alias in handshake, fix null fingerprints
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Details 
- Add SettingsScreen with identity (alias, key backup/restore), audio defaults,
  server management, network prefs, and default room
- SettingsRepository persists all settings via SharedPreferences
- Auto-generate random display names on first launch (e.g. "Swift Wolf")
- Thread alias through CallOffer → relay handshake → RoomUpdate broadcast
- Derive caller fingerprint from identity key in relay handshake (fixes null
  fingerprints when --auth-url is not set)
- Persist identity seed for stable fingerprints across reconnects
- Add alias field to SignalMessage::CallOffer (serde default for backward compat)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-06 03:56:33 +00:00
Claude
6228ab32c1 ci: upload build artifacts to rustypaste
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Details 
Requires PASTE_AUTH and PASTE_URL secrets configured in Forgejo.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-06 02:08:13 +00:00
Claude
bd258f432a fix: remove actions/upload-artifact (unsupported on Forgejo)
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Details 
Forgejo doesn't support @actions/artifact v4. Package the tarball
and print sizes instead. Binaries can be grabbed from the runner
workspace or deployed directly.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-06 02:07:06 +00:00
Claude
8bf073aa80 fix: handle RoomUpdate variant in wzp-client signal type mapping
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Details 
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-06 01:54:36 +00:00
Claude
72e834b45e fix: init git submodules in CI with HTTPS fallback
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Details 
The featherchat submodule uses SSH URL which doesn't work in CI.
Convert to HTTPS via git insteadOf before submodule init.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-05 18:24:59 +00:00
Claude
673ffd498c fix: use catthehacker/ubuntu:act-latest for Forgejo CI runner
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Details 
The Forgejo runner needs Node.js for actions/checkout@v4.
catthehacker/ubuntu:act-latest has Node.js pre-installed.
Also install Rust in the workflow since the base image doesn't have it.
Build triggers on main + feat/* branches now.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-05 18:19:14 +00:00
Claude
2d4b8eebd5 feat: RoomUpdate protocol — broadcast participant list on join/leave 
- Add RoomUpdate signal message to wzp-proto with participant count + list
- Add RoomParticipant struct (fingerprint + optional alias)
- Store fingerprint/alias in relay Participant struct
- Broadcast RoomUpdate to all room members on join and leave
- Add signal recv task in Android engine to handle RoomUpdate
- Surface room_participant_count + room_participants in CallStats JSON
- Show "X in room" with participant names in Android in-call UI

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-05 18:12:24 +00:00
Claude
a23d9f5e41 feat: foreground service, dB gain sliders, speaker routing, live network stats 
- Wire CallService foreground service for background calls (microphone type)
- Add Voice Volume + Mic Gain sliders (-20 to +20 dB) applied in Kotlin
- Connect AudioRouteManager for real speaker toggle via AudioManager
- Feed quinn QUIC RTT into PathMonitor, display Loss/RTT/Jitter from live data
- Nuclear teardown between calls — recreate engine + audio pipeline each call
- Fix re-entrant teardown loop from CallService notification callback
- Park audio threads as daemons to avoid libcrypto TLS destructor crash on exit
- Remove duplicate wakelocks from Activity (service owns them now)
- Strip AEC + denoise from capture path, keep AGC only (incremental approach)
- Fix .so copy target: libwzp_android.so not libwzp.so

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-05 17:45:00 +00:00
Claude
b3e56ecbd8 feat: add AGC to capture + playout paths, add server UI, DNS resolve 
- Wire AutoGainControl on both capture (mic → encode) and playout
  (decode → speaker) paths to normalize volume levels
- Add server list with add/remove custom server dialog
- Add IPv4/IPv6 preference toggle for DNS resolution
- Resolve DNS hostnames to IP in Kotlin before passing to Rust engine
- Revert to IP addresses for default servers (DNS still broken on QUIC)

AGC confirmed working — voice levels noticeably improved in testing.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-05 14:02:33 +00:00
Claude
2fa07286c3 feat: wakelock for background calls, server selector UI 
- Partial wake lock + WiFi high-perf lock during calls — audio
  continues when screen is off / phone is locked
- Server selector: toggle between LAN (172.16.81.175) and Pangolin
  (pangolin.manko.yoga) before connecting
- Room name editable in idle screen

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-05 12:54:02 +00:00
Claude
bf91cf25bd feat: add real audio pipeline with Opus + RaptorQ FEC 
- AudioPipeline: Kotlin AudioRecord/AudioTrack on JVM threads, PCM
  shuttled to Rust via lock-free ring buffers + JNI
- FEC: RaptorQ fountain codes on encode (5 frames/block, 20% repair
  ratio for GOOD profile), decoder feeds repair symbols for recovery
- Real audio level meter from mic RMS (replaces fake animation)
- Room name editable in UI (default: "android")
- Relay changed to pangolin.manko.yoga:4433
- Stats overlay shows FEC recovered count
- CallState now synced from polled stats (fixes "Connecting" stuck bug)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-05 12:33:59 +00:00
Claude
81c756c076 chore: switch relay to 172.16.81.175:4433 for testing 
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-05 12:01:51 +00:00
Claude
af85a49e86 fix: eliminate all native thread creation — run everything single-threaded 
pthread_create crashes on Android due to static bionic __init_tcb stubs
in the Rust std prebuilt rlibs. This is unfixable without rebuilding std.

Solution: run the entire call (QUIC connect, handshake, media send/recv)
on a single tokio current_thread runtime. The JNI startCall() now blocks,
so Kotlin dispatches it to Dispatchers.IO (JVM thread, not pthread).

Audio pipeline temporarily simplified to silence frames — will restore
once threading is solved (either via Java Thread or rebuilding std).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-05 09:52:28 +00:00
Claude
bae03365da fix: restore getauxval_fix.c + current_thread tokio — both needed 
The getauxval override (dlsym wrapper) fixes SIGSEGV in
init_have_lse_atomics at library load time. The current_thread
tokio runtime avoids SEGV_ACCERR in pthread_create/__init_tcb.
Both fixes are required together.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-05 09:37:57 +00:00
Claude
9d9ce4706d fix: use current_thread tokio runtime — avoid pthread_create SEGV on Android 
Multi-thread tokio runtime crashes with SEGV_ACCERR in __init_tcb
during pthread_create on Android (static bionic stubs from CRT).
Switch to current_thread runtime which runs network I/O on the
calling thread without spawning additional OS threads.

Also: clean up build.rs — use only libc++_shared.so (dynamic),
remove getauxval_fix.c hack, remove static c++/c++abi linking.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-05 09:27:46 +00:00
Claude
9098e28a1f fix: SIGSEGV in getauxval — override broken CRT stub with dlsym wrapper 
compiler-rt's init_have_lse_atomics calls getauxval(AT_HWCAP) at
library load time. The static getauxval from the CRT reads from
__libc_auxv which is NULL in shared libraries → SIGSEGV at 0x0.

Fix: compile getauxval_fix.c that provides a getauxval() which uses
dlsym(RTLD_DEFAULT) to find the real bionic getauxval at runtime.
Also switch to libc++_shared.so (bundled in APK) to avoid pulling
in static libc stubs.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-05 08:39:57 +00:00
Claude
f6d51fce61 fix: target API 26 in ELF — pthread_atfork blocked by bionic at API 21 
The .note.android.ident ELF section had API level 0x15 (21), causing
Android's bionic linker to block pthread_atfork (used by rand crate).
Fix: pass -P 26 to cargo-ndk and set linker to android26-clang.
Verified: ELF now shows 0x1a (26).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-05 06:05:44 +00:00
Claude
a8dd0c2f57 fix: also link libc++abi for RTTI — resolve missing __class_type_info vtable 
- Compile all 62 Oboe source files (was headers-only, missing symbols)
- Link libc++_static + libc++abi with NDK sysroot search path
- Bump linker target from android21 to android26 (fixes pthread_atfork)
- Link liblog + libOpenSLES for Oboe runtime deps

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-05 05:48:49 +00:00
Claude
64566e9acb fix: logcat-server.py SyntaxError — global declaration after use 
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-05 05:12:28 +00:00
Claude
10eb19cd24 feat: add logcat HTTP server for remote crash debugging 
Simple Python script that captures adb logcat and serves it over HTTP.
Run on laptop, read from anywhere via curl/browser.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-05 05:11:19 +00:00
Claude
778f4dd428 fix: link libc++ statically — crash on launch due to missing libc++_shared.so 
- Set cpp_link_stdlib(None) to suppress cc crate's automatic linking
- Explicitly link both c++_static and c++abi with NDK sysroot search path
- Fixes RTTI vtable symbol (_ZTVN10__cxxabiv117__class_type_infoE) error
- Verified: only liblog.so remains as dynamic dependency

Closes #001

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-05 05:07:25 +00:00
Siavash Sameni
622fdee51f fix: also link libc++abi for RTTI — resolve missing __class_type_info vtable 
Previous fix linked c++_static but not c++abi. Android NDK splits the
static C++ runtime into two archives: libc++_static.a (STL) and
libc++abi.a (RTTI/exceptions). Without c++abi, dlopen fails on
_ZTVN10__cxxabiv117__class_type_infoE.

Now using cpp_link_stdlib(None) to suppress cc crate auto-linking, then
explicitly linking both c++_static and c++abi via cargo:rustc-link-lib.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-05 09:00:14 +04:00
Claude
b204213a01 build: rebuild APK with static libc++ linking (fixes #001) 
libc++_shared.so is no longer a runtime dependency — verified
via llvm-readelf. Only system libs (libdl, liblog, libm, libc) remain.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-05 04:56:35 +00:00
Siavash Sameni
e751af7e38 fix: link libc++ statically — crash on launch due to missing libc++_shared.so 
The app crashed immediately when loading libwzp_android.so because the
cc crate's default dynamic linking produced a runtime dependency on
libc++_shared.so, which was never packaged into the APK.

Adding .cpp_link_stdlib(Some("c++_static")) to build.rs bakes the C++
runtime into libwzp_android.so directly, eliminating the missing .so.

See issues/001-libc++-shared-crash.md for full diagnosis and logcat trace.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-05 08:52:55 +04:00
Claude
8d5f6fe044 feat: wire QUIC transport, JNI bridge, connect UI + add docs 
- Replace raw FFI with proper `jni` crate for string marshalling
- Wire QUIC transport in engine: connect to relay, crypto handshake
  (CallOffer/CallAnswer, X25519+Ed25519), send/recv MediaPackets
- Feed received packets into jitter buffer (was previously ignored)
- Add connect screen UI with CALL button (idle state) and in-call
  controls (mute, speaker, hang up, live stats)
- Hardcode relay 172.16.81.125:4433, room "android"
- Add comprehensive docs in docs/android/:
  architecture.md (8 mermaid diagrams), build-guide.md,
  debugging.md, maintenance.md, roadmap.md

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-05 04:43:49 +00:00
Claude
780309fede fix: crash on launch — don't auto-start call, handle null JNI strings, remove stdout tracing 
- CallActivity no longer auto-starts a call on launch
- CallViewModel lazily inits engine only when startCall() is called
- nativeGetStats nullable return handled safely in Kotlin
- Removed tracing_subscriber::fmt() which panics on Android (no stdout)
- All JNI calls wrapped in try/catch on Kotlin side

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-05 02:04:23 +00:00
Claude
73ebcdd869 build: Android APK builds working — debug (8.9MB) and release (2.0MB) 
- Fix C++ std::std:: double namespace in oboe_bridge.cpp
- Auto-fetch Oboe headers from GitHub in build.rs
- Configure cargo cross-compilation (.cargo/config.toml) with NDK linkers
- Fix Gradle settings (dependencyResolutionManagement), signing configs,
  Compose LinearProgressIndicator API, and Android manifest theme
- Add Gradle wrapper, .gitignore for build artifacts
- arm64-v8a only (raptorq crate incompatible with armv7 32-bit)
- Release APK: 2.0MB signed with wzp-release key
- Debug APK: 8.9MB signed with wzp-debug key

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-04 19:37:08 +00:00
Claude
e7b1c3372a feat: Android VoIP client — Phase 2 (JNI bridge, Compose UI, AEC pipeline wiring) 
- JNI bridge with 8 extern functions (init, startCall, stopCall, setMute,
  setSpeaker, getStats, forceProfile, destroy) with panic catching
- Kotlin engine layer: WzpEngine JNI wrapper, WzpCallback interface,
  CallStats data class with JSON deserialization
- Jetpack Compose UI: InCallScreen with quality indicator (green/yellow/red),
  mute/speaker/hangup buttons, stats overlay, duration timer
- CallActivity with RECORD_AUDIO permission handling, Material3 theme
- CallService foreground service with WakeLock, WiFi lock, notification
- AudioRouteManager for speaker/earpiece/Bluetooth SCO switching
- AEC wired into CallEncoder pipeline: AEC → AGC → denoise → silence → encode
- AEC farend reference fed from decode path to encode path in pipeline
- Engine exposes set_aec_enabled/set_agc_enabled via AtomicBool flags

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-04 18:16:38 +00:00
Claude
26e9c55f1f feat: Android VoIP client — Phase 1 (audio quality, network adaptation, crate skeleton) 
- New wzp-android crate with Oboe C++ backend, lock-free SPSC ring buffers,
  engine orchestrator, codec pipeline, and Android Gradle project structure
- AEC (NLMS adaptive filter), AGC (two-stage with fast attack/slow release),
  windowed-sinc FIR resampler replacing linear interpolation (wzp-codec)
- Opus encoder tuning: complexity 7 default, set_expected_loss support
- Mobile jitter buffer: asymmetric EMA (fast up/slow down), handoff spike
  detection with 2s cooldown, configurable safety margin
- Network-aware quality control: cellular-specific thresholds, faster
  downgrade on cellular, proactive tier drop on WiFi→cellular handoff,
  FEC ratio boost during network transitions
- Handoff detection in PathMonitor via RTT jitter spike analysis

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-04 18:07:55 +00:00
Siavash Sameni
aa09275015 feat: WebSocket support in relay — browsers connect directly, no bridge 
Implements WS_RELAY_SPEC.md: relay handles both QUIC and WebSocket clients
in shared rooms, eliminating the wzp-web bridge server.

Room abstraction (room.rs):
- New ParticipantSender enum: Quic(transport) | WebSocket(mpsc::Sender)
- send_raw() sends PCM bytes to either transport type
- join_ws() convenience method for WS clients
- Forwarding loops handle mixed QUIC+WS rooms:
  QUIC→QUIC: send_media (trunked if enabled)
  QUIC→WS: send_raw payload bytes
  WS→QUIC: send_raw wraps in MediaPacket
  WS→WS: send_raw binary

WebSocket handler (ws.rs):
- GET /ws/{room} → WebSocket upgrade via axum
- Auth: first msg {"type":"auth","token":"..."} → validates against FC
- mpsc channel bridges room fan-out to WS binary frames
- Session + presence lifecycle matches QUIC path
- Optional static file serving via --static-dir (tower-http ServeDir)

Config: --ws-port 8080, --static-dir ./static
Proto: MediaHeader::default_pcm() for WS→QUIC wrapping

63 relay + 54 proto tests passing.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-03-30 14:38:33 +04:00
Siavash Sameni
59bf3f6587 docs: WS relay spec — add WebSocket listener to eliminate wzp-web bridge 
Detailed implementation plan for adding WS support directly to wzp-relay:
- Abstract Participant over transport type (Quic + WebSocket enum)
- New --ws-port flag for browser connections
- Cross-transport fan-out (QUIC↔WS in same rooms)
- Auth, room management, session cleanup unchanged
- Eliminates wzp-web container entirely

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-03-30 14:27:52 +04:00
Siavash Sameni
4fb15fe7a3 feat: P3-T3 bandwidth estimation — GCC-style congestion control 
BandwidthEstimator tracks available bandwidth using dual signals:

Delay-based: EMA of RTT vs baseline minimum. If RTT > 1.5x baseline
→ Overuse (congestion). If RTT < 1.1x baseline → Underuse (headroom).
Baseline slowly drifts up to handle route changes.

Loss-based: sliding window of 10 loss samples. Average > 5% → congested.

Rate adaptation (AIMD):
- Overuse OR loss congested: decrease 15% (multiplicative)
- Underuse AND no loss: increase 5% (additive)
- Normal: hold steady
- Clamped to [min_bw, max_bw]

recommended_profile() maps bandwidth to quality tier:
- >= 25 kbps → GOOD (Opus 24k + 20% FEC)
- >= 8 kbps → DEGRADED (Opus 6k + 50% FEC)
- < 8 kbps → CATASTROPHIC (Codec2 1200 + 100% FEC)

from_quality_report() integrates with existing QualityReport packets.

54 proto tests passing (12 new bandwidth tests).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-03-29 18:51:08 +04:00
Siavash Sameni
e595fe6591 feat: P3-T6 per-session forwarding — relay links for hop-by-hop media 
RelayLink: QUIC connection to peer relay (SNI "_relay") for forwarding
specific sessions. Methods: connect, forward, add/remove_session, is_idle.

RelayLinkManager: manages connections to multiple peers.
- get_or_connect: lazy connection establishment
- forward_to: send media packet to specific peer
- register/unregister_session: track which sessions use which links
- Auto-closes idle links on session unregister

Protocol: added SignalMessage::SessionForward { session_id,
target_fingerprint, source_relay } and SessionForwardAck { session_id,
room_name } for relay-link session setup signaling.

Building block for P3-T7 (call setup over mesh) which wires
route resolution + relay links + handshake into a complete flow.

62 relay tests + 42 proto tests passing (7 new relay_link tests).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-03-29 18:45:36 +04:00
Siavash Sameni
326aa491cc feat: P3-T5 route resolution — find relay path to any fingerprint 
RouteResolver queries PresenceRegistry to determine how to reach a target:
- Route::Local — connected to this relay
- Route::DirectPeer(addr) — on a directly connected peer relay
- Route::Chain(addrs) — multi-hop (structure ready, single-hop for now)
- Route::NotFound — not in any known relay

Protocol: added SignalMessage::RouteQuery { fingerprint, ttl } and
RouteResponse { fingerprint, found, relay_chain } for peer-to-peer
route queries over probe connections.

HTTP API: GET /route/:fingerprint returns JSON with route type + chain.

Relay handles incoming RouteQuery on probe connections: looks up locally,
replies with RouteResponse. TTL decremented for future multi-hop forwarding.

55 relay tests + 42 proto tests passing (7 new route tests).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-03-29 18:38:24 +04:00
Siavash Sameni
464e95a4bd feat: P3-T4 relay presence registry — gossip fingerprints across relay mesh 
PresenceRegistry tracks who is connected where:
- register_local/unregister_local for directly connected users
- update_peer for fingerprints reported by peer relays
- lookup returns Local or Remote(addr)
- expire_stale removes entries older than timeout

Gossip via probe connections:
- New SignalMessage::PresenceUpdate { fingerprints, relay_addr }
- Probes send local fingerprints every 10s alongside Ping/Pong
- Receiving relay updates its remote presence table

HTTP API on metrics port:
- GET /presence — all known fingerprints + locations
- GET /presence/:fingerprint — single lookup
- GET /peers — peer relays + their connected users

Wired into relay main:
- Registry created at startup
- register_local after auth+handshake
- unregister_local on disconnect
- Passed to probe mesh and metrics server

Also marks FC-10 as DONE in integration tracker.

48 relay tests + 42 proto tests passing.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-03-29 17:36:55 +04:00
Siavash Sameni
fd95167705 chore: update featherChat submodule to v0.0.38 (feature/wzp-call-infrastructure) 
featherChat now implements:
- FC-2: Call state management (calls.rs, CallState, sled persistence)
- FC-3: WS call signal routing (Offer→Ringing, Answer→Active, Hangup→Ended)
- FC-5: Group-to-room mapping (hash_room_name — same convention as WZP)
- FC-6: Presence API (online/devices per fingerprint, batch query)
- FC-7: Missed call notifications (sled storage, retrieval endpoint)

Only FC-10 (web bridge shared auth) remains on FC side.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-03-29 17:21:55 +04:00
Siavash Sameni
9e7fea7633 test: P2-T1-S5 long-session regression — 60s call with drift/loss assertions 
3 tests in crates/wzp-client/tests/long_session.rs:

1. long_session_no_drift — 3000 frames (60s) through full encoder/decoder
   pipeline, asserts >95% decoded, 0 overruns, 0 underruns

2. long_session_with_simulated_loss — drops every 20th packet + reorders,
   asserts >90% decoded, confirms PLC fills gaps (2999/3000)

3. long_session_stats_consistency — verifies stats.total_decoded matches
   actual decoded count over 60s (no accounting drift)

Completes P2-T1-S5. Phase 2 is now fully done.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-03-28 20:59:27 +04:00
Siavash Sameni
993cf9ab7f docs: full system architecture with Mermaid diagrams + project README 
ARCHITECTURE.md covers the entire system with 13 Mermaid diagrams:
- System overview (send/recv pipeline, relay SFU)
- Crate dependency graph (8 crates + featherChat)
- Wire formats (MediaHeader, MiniHeader, TrunkFrame, QualityReport, SignalMessage)
- Quality profiles with adaptive switching thresholds
- Cryptographic handshake sequence (X25519 + Ed25519)
- Identity model (BIP39 seed → HKDF → Ed25519/X25519 → Fingerprint)
- Relay modes (Room SFU, Forward, Probe)
- Web bridge architecture (Browser ↔ WS ↔ QUIC)
- FEC protection pipeline (RaptorQ + interleaving)
- Telemetry stack (Prometheus → Grafana)
- Session state machine
- Audio processing detail (denoise → VAD → encode → FEC → encrypt)
- Adaptive jitter buffer flow
- Deployment topology (multi-region)
- featherChat integration sequence

README.md: quick start, feature list, documentation index, build instructions.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-03-28 16:41:39 +04:00
146 changed files with 26921 additions and 883 deletions
Expand all files Collapse all files

72
.agents/skills/caveman/SKILL.md Normal file
View File

@@ -0,0 +1,72 @@
---
name: caveman
description: >
Ultra-compressed communication mode. Slash token usage ~75% by speaking like caveman
while keeping full technical accuracy. Use when user says "caveman mode", "talk like caveman",
"use caveman", "less tokens", "be brief", or invokes /caveman. Also auto-triggers
when token efficiency is requested.
---
# Caveman Mode
## Core Rule
Respond like smart caveman. Cut articles, filler, pleasantries. Keep all technical substance.
## Grammar
- Drop articles (a, an, the)
- Drop filler (just, really, basically, actually, simply)
- Drop pleasantries (sure, certainly, of course, happy to)
- Short synonyms (big not extensive, fix not "implement a solution for")
- No hedging (skip "it might be worth considering")
- Fragments fine. No need full sentence
- Technical terms stay exact. "Polymorphism" stays "polymorphism"
- Code blocks unchanged. Caveman speak around code, not in code
- Error messages quoted exact. Caveman only for explanation
## Pattern
```
[thing] [action] [reason]. [next step].
```
Not:
> Sure! I'd be happy to help you with that. The issue you're experiencing is likely caused by...
Yes:
> Bug in auth middleware. Token expiry check use `<` not `<=`. Fix:
## Examples
**User:** Why is my React component re-rendering?
**Normal (69 tokens):** "The reason your React component is re-rendering is likely because you're creating a new object reference on each render cycle. When you pass an inline object as a prop, React's shallow comparison sees it as a different object every time, which triggers a re-render. I'd recommend using useMemo to memoize the object."
**Caveman (19 tokens):** "New object ref each render. Inline object prop = new ref = re-render. Wrap in `useMemo`."
---
**User:** How do I set up a PostgreSQL connection pool?
**Caveman:**
```
Use `pg` pool:
```
```js
const pool = new Pool({
max: 20,
idleTimeoutMillis: 30000,
connectionTimeoutMillis: 2000,
})
```
```
max = concurrent connections. Keep under DB limit. idleTimeout kill stale conn.
```
## Boundaries
- Code: write normal. Caveman English only
- Git commits: normal
- PR descriptions: normal
- User say "stop caveman" or "normal mode": revert immediately

5
.cargo/config.toml Normal file
View File

@@ -0,0 +1,5 @@
[target.aarch64-linux-android]
linker = "aarch64-linux-android26-clang"
[target.armv7-linux-androideabi]
linker = "armv7a-linux-androideabi26-clang"

196
.gitea/workflows/build.yml
View File

@@ -2,187 +2,57 @@ name: Build Release Binaries
on:
push:
branches:
- main
- 'feat/*'
tags:
- 'v*'
paths-ignore:
- '.gitea/**'
workflow_dispatch:
inputs:
targets:
description: 'Targets to build (comma-separated: amd64,arm64,armv7,mac-arm64)'
required: false
default: 'amd64'
env:
CARGO_TERM_COLOR: always
jobs:
# Always builds on push tags. On manual dispatch, reads inputs.
build-amd64:
if: >-
github.event_name == 'push' ||
contains(github.event.inputs.targets, 'amd64')
runs-on: ubuntu-latest
container:
image: rust:1-bookworm
image: catthehacker/ubuntu:act-latest
steps:
- uses: actions/checkout@v4
- name: Install dependencies
run: apt-get update && apt-get install -y cmake pkg-config libasound2-dev
- name: Cache cargo
uses: actions/cache@v4
with:
path: |
~/.cargo/registry
~/.cargo/git
target
key: cargo-amd64-${{ hashFiles('Cargo.lock') }}
restore-keys: cargo-amd64-
- name: Build headless binaries
run: cargo build --release --bin wzp-relay --bin wzp-client --bin wzp-bench --bin wzp-web
- name: Build audio client
- name: Init submodules
run: |
cargo build --release --bin wzp-client --features audio
cp target/release/wzp-client target/release/wzp-client-audio
cargo build --release --bin wzp-client
git config --global url."https://git.manko.yoga/".insteadOf "ssh://git@git.manko.yoga:222/"
git submodule update --init --recursive
- name: Install Rust + dependencies
run: |
curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y
source "$HOME/.cargo/env"
apt-get update && apt-get install -y cmake pkg-config libasound2-dev ninja-build
rustc --version
- name: Build relay + tools
run: |
source "$HOME/.cargo/env"
cargo build --release --bin wzp-relay --bin wzp-client --bin wzp-bench --bin wzp-web
- name: Run tests
run: cargo test --workspace --lib
- name: Package
run: |
mkdir -p dist/wzp-linux-amd64
cp target/release/wzp-relay dist/wzp-linux-amd64/
cp target/release/wzp-client dist/wzp-linux-amd64/
cp target/release/wzp-client-audio dist/wzp-linux-amd64/
cp target/release/wzp-web dist/wzp-linux-amd64/
cp target/release/wzp-bench dist/wzp-linux-amd64/
cp -r crates/wzp-web/static dist/wzp-linux-amd64/
cd dist && tar czf wzp-linux-amd64.tar.gz wzp-linux-amd64/
source "$HOME/.cargo/env"
cargo test --workspace --lib
- name: Upload artifact
uses: actions/upload-artifact@v4
with:
name: wzp-linux-amd64
path: dist/wzp-linux-amd64.tar.gz
build-arm64:
if: >-
github.event_name == 'push' ||
contains(github.event.inputs.targets, 'arm64')
runs-on: ubuntu-latest
container:
image: rust:1-bookworm
steps:
- uses: actions/checkout@v4
- name: Install cross-compilation tools
run: |
dpkg --add-architecture arm64
apt-get update
apt-get install -y cmake pkg-config gcc-aarch64-linux-gnu libc6-dev-arm64-cross
rustup target add aarch64-unknown-linux-gnu
- name: Cache cargo
uses: actions/cache@v4
with:
path: |
~/.cargo/registry
~/.cargo/git
target
key: cargo-arm64-${{ hashFiles('Cargo.lock') }}
restore-keys: cargo-arm64-
- name: Build
- name: Upload to rustypaste
env:
CARGO_TARGET_AARCH64_UNKNOWN_LINUX_GNU_LINKER: aarch64-linux-gnu-gcc
CC_aarch64_unknown_linux_gnu: aarch64-linux-gnu-gcc
PASTE_AUTH: ${{ secrets.PASTE_AUTH }}
PASTE_URL: ${{ secrets.PASTE_URL }}
run: |
cargo build --release --target aarch64-unknown-linux-gnu \
--bin wzp-relay --bin wzp-client --bin wzp-bench --bin wzp-web
- name: Package
run: |
mkdir -p dist/wzp-linux-arm64
cp target/aarch64-unknown-linux-gnu/release/wzp-relay dist/wzp-linux-arm64/
cp target/aarch64-unknown-linux-gnu/release/wzp-client dist/wzp-linux-arm64/
cp target/aarch64-unknown-linux-gnu/release/wzp-web dist/wzp-linux-arm64/
cp target/aarch64-unknown-linux-gnu/release/wzp-bench dist/wzp-linux-arm64/
cp -r crates/wzp-web/static dist/wzp-linux-arm64/
cd dist && tar czf wzp-linux-arm64.tar.gz wzp-linux-arm64/
- name: Upload artifact
uses: actions/upload-artifact@v4
with:
name: wzp-linux-arm64
path: dist/wzp-linux-arm64.tar.gz
build-armv7:
if: >-
github.event_name == 'push' ||
contains(github.event.inputs.targets, 'armv7')
runs-on: ubuntu-latest
container:
image: rust:1-bookworm
steps:
- uses: actions/checkout@v4
- name: Install cross-compilation tools
run: |
dpkg --add-architecture armhf
apt-get update
apt-get install -y cmake pkg-config gcc-arm-linux-gnueabihf libc6-dev-armhf-cross
rustup target add armv7-unknown-linux-gnueabihf
- name: Cache cargo
uses: actions/cache@v4
with:
path: |
~/.cargo/registry
~/.cargo/git
target
key: cargo-armv7-${{ hashFiles('Cargo.lock') }}
restore-keys: cargo-armv7-
- name: Build
env:
CARGO_TARGET_ARMV7_UNKNOWN_LINUX_GNUEABIHF_LINKER: arm-linux-gnueabihf-gcc
CC_armv7_unknown_linux_gnueabihf: arm-linux-gnueabihf-gcc
run: |
cargo build --release --target armv7-unknown-linux-gnueabihf \
--bin wzp-relay --bin wzp-client --bin wzp-bench --bin wzp-web
- name: Package
run: |
mkdir -p dist/wzp-linux-armv7
cp target/armv7-unknown-linux-gnueabihf/release/wzp-relay dist/wzp-linux-armv7/
cp target/armv7-unknown-linux-gnueabihf/release/wzp-client dist/wzp-linux-armv7/
cp target/armv7-unknown-linux-gnueabihf/release/wzp-web dist/wzp-linux-armv7/
cp target/armv7-unknown-linux-gnueabihf/release/wzp-bench dist/wzp-linux-armv7/
cp -r crates/wzp-web/static dist/wzp-linux-armv7/
cd dist && tar czf wzp-linux-armv7.tar.gz wzp-linux-armv7/
- name: Upload artifact
uses: actions/upload-artifact@v4
with:
name: wzp-linux-armv7
path: dist/wzp-linux-armv7.tar.gz
# Release job — creates a release with all artifacts when a tag is pushed
release:
if: startsWith(github.ref, 'refs/tags/v')
needs: [build-amd64]
runs-on: ubuntu-latest
steps:
- name: Download all artifacts
uses: actions/download-artifact@v4
with:
path: artifacts
- name: Create release
uses: softprops/action-gh-release@v2
with:
files: artifacts/**/*.tar.gz
generate_release_notes: true
tar czf /tmp/wzp-linux-amd64.tar.gz \
-C target/release wzp-relay wzp-client wzp-web wzp-bench
ls -lh /tmp/wzp-linux-amd64.tar.gz
LINK=$(curl -sF "file=@/tmp/wzp-linux-amd64.tar.gz" \
-H "Authorization: ${PASTE_AUTH}" \
"https://${PASTE_URL}")
echo "Download: ${LINK}"

43
.gitea/workflows/mirror-github.yml Normal file
View File

@@ -0,0 +1,43 @@
name: Mirror to GitHub
on:
push:
branches:
- main
- 'feat/*'
- 'feature/*'
tags:
- '*'
jobs:
mirror:
runs-on: ubuntu-latest
container:
image: catthehacker/ubuntu:act-latest
steps:
- uses: actions/checkout@v4
with:
fetch-depth: 0
- name: Push to GitHub
env:
GH_SSH_KEY: ${{ secrets.GH_SSH_KEY }}
run: |
mkdir -p ~/.ssh
echo "${GH_SSH_KEY}" > ~/.ssh/id_ed25519
chmod 600 ~/.ssh/id_ed25519
ssh-keyscan github.com >> ~/.ssh/known_hosts 2>/dev/null
git remote add github git@github.com:manawenuz/wzp.git
# Push the current branch
BRANCH="${GITHUB_REF#refs/heads/}"
TAG="${GITHUB_REF#refs/tags/}"
if [ "${GITHUB_REF}" != "${GITHUB_REF#refs/tags/}" ]; then
echo "Pushing tag: ${TAG}"
git push github "refs/tags/${TAG}" --force
else
echo "Pushing branch: ${BRANCH}"
git push github "HEAD:refs/heads/${BRANCH}" --force
fi

25
.gitignore vendored
View File

@@ -4,3 +4,28 @@
*.swp
*.swo
*~
# Logs
logs
*.log
npm-debug.log*
yarn-debug.log*
yarn-error.log*
dev-debug.log
# Dependency directories
node_modules/
# Environment variables
.env
# Editor directories and files
.idea
.vscode
*.suo
*.ntvs*
*.njsproj
*.sln
*.sw?
# OS specific
# Taskmaster (local workflow tool)
.taskmaster/
.env.example

204
Cargo.lock generated
View File

@@ -43,6 +43,12 @@ dependencies = [
"pkg-config",
]
[[package]]
name = "android_log-sys"
version = "0.2.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "85965b6739a430150bdd138e2374a98af0c3ee0d030b3bb7fc3bddff58d0102e"
[[package]]
name = "android_system_properties"
version = "0.1.5"
@@ -113,26 +119,6 @@ dependencies = [
"winapi",
]
[[package]]
name = "audiopus"
version = "0.3.0-rc.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ab55eb0e56d7c6de3d59f544e5db122d7725ec33be6a276ee8241f3be6473955"
dependencies = [
"audiopus_sys",
]
[[package]]
name = "audiopus_sys"
version = "0.2.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "62314a1546a2064e033665d658e88c620a62904be945f8147e6b16c3db9f8651"
dependencies = [
"cmake",
"log",
"pkg-config",
]
[[package]]
name = "autocfg"
version = "1.5.0"
@@ -169,6 +155,7 @@ checksum = "edca88bc138befd0323b20752846e6587272d3b03b0343c8ea28a6f819e6e71f"
dependencies = [
"async-trait",
"axum-core 0.4.5",
"base64",
"bytes",
"futures-util",
"http",
@@ -184,8 +171,10 @@ dependencies = [
"pin-project-lite",
"rustversion",
"serde",
"sha1",
"sync_wrapper",
"tokio",
"tokio-tungstenite 0.24.0",
"tower",
"tower-layer",
"tower-service",
@@ -220,7 +209,7 @@ dependencies = [
"sha1",
"sync_wrapper",
"tokio",
"tokio-tungstenite",
"tokio-tungstenite 0.28.0",
"tower",
"tower-layer",
"tower-service",
@@ -380,6 +369,18 @@ version = "3.20.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "5d20789868f4b01b2f2caec9f5c4e0213b41e3e5702a50157d699ae31ced2fcb"
[[package]]
name = "bytemuck"
version = "1.25.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "c8efb64bd706a16a1bdde310ae86b351e4d21550d98d056f22f8a7f7a2183fec"
[[package]]
name = "byteorder"
version = "1.5.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "1fd0f2584146f6f2ef48085050886acf353beff7305ebd1ae69500e27c67f64b"
[[package]]
name = "bytes"
version = "1.11.1"
@@ -832,6 +833,27 @@ dependencies = [
"subtle",
]
[[package]]
name = "dirs"
version = "6.0.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "c3e8aa94d75141228480295a7d0e7feb620b1a5ad9f12bc40be62411e38cce4e"
dependencies = [
"dirs-sys",
]
[[package]]
name = "dirs-sys"
version = "0.5.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e01a3366d27ee9890022452ee61b2b63a67e6f13f58900b651ff5665f0bb1fab"
dependencies = [
"libc",
"option-ext",
"redox_users",
"windows-sys 0.61.2",
]
[[package]]
name = "displaydoc"
version = "0.2.5"
@@ -1745,6 +1767,15 @@ version = "0.2.16"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "b6d2cec3eae94f9f509c767b45932f1ada8350c4bdb85af2fcab4a3c14807981"
[[package]]
name = "libredox"
version = "0.1.15"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "7ddbf48fd451246b1f8c2610bd3b4ac0cc6e149d89832867093ab69a17194f08"
dependencies = [
"libc",
]
[[package]]
name = "linux-raw-sys"
version = "0.12.1"
@@ -1787,6 +1818,15 @@ dependencies = [
"libc",
]
[[package]]
name = "matchers"
version = "0.2.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "d1525a2a28c7f4fa0fc98bb91ae755d1e2d1505079e05539e35bc876b5d65ae9"
dependencies = [
"regex-automata",
]
[[package]]
name = "matchit"
version = "0.7.3"
@@ -2065,6 +2105,30 @@ dependencies = [
"vcpkg",
]
[[package]]
name = "option-ext"
version = "0.2.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "04744f49eae99ab78e0d5c0b603ab218f515ea8cfe5a456d7629ad883a3b6e7d"
[[package]]
name = "opusic-c"
version = "1.5.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "9486eb5a1a735bf56430b5b44e21157be30ac9fcc17999ba309981b8bd90d2ff"
dependencies = [
"opusic-sys",
]
[[package]]
name = "opusic-sys"
version = "0.6.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "dc3280fe5b6f97ac1a35a0ac003e2fb0b92f8e4bdf2b2057e1bf9b87acca5696"
dependencies = [
"cmake",
]
[[package]]
name = "os_str_bytes"
version = "6.6.1"
@@ -2405,6 +2469,17 @@ dependencies = [
"bitflags 2.11.0",
]
[[package]]
name = "redox_users"
version = "0.5.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "a4e608c6638b9c18977b00b475ac1f28d14e84b27d8d42f70e0bf1e3dec127ac"
dependencies = [
"getrandom 0.2.17",
"libredox",
"thiserror 2.0.18",
]
[[package]]
name = "regex"
version = "1.12.3"
@@ -3140,6 +3215,18 @@ dependencies = [
"tokio",
]
[[package]]
name = "tokio-tungstenite"
version = "0.24.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "edc5f74e248dc973e0dbb7b74c7e0d6fcc301c694ff50049504004ef4d0cdcd9"
dependencies = [
"futures-util",
"log",
"tokio",
"tungstenite 0.24.0",
]
[[package]]
name = "tokio-tungstenite"
version = "0.28.0"
@@ -3149,7 +3236,7 @@ dependencies = [
"futures-util",
"log",
"tokio",
"tungstenite",
"tungstenite 0.28.0",
]
[[package]]
@@ -3304,6 +3391,17 @@ dependencies = [
"tracing-core",
]
[[package]]
name = "tracing-android"
version = "0.2.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "12612be8f868a09c0ceae7113ff26afe79d81a24473a393cb9120ece162e86c0"
dependencies = [
"android_log-sys",
"tracing",
"tracing-subscriber",
]
[[package]]
name = "tracing-attributes"
version = "0.1.31"
@@ -3342,10 +3440,14 @@ version = "0.3.23"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "cb7f578e5945fb242538965c2d0b04418d38ec25c79d160cd279bf0731c8d319"
dependencies = [
"matchers",
"nu-ansi-term",
"once_cell",
"regex-automata",
"sharded-slab",
"smallvec",
"thread_local",
"tracing",
"tracing-core",
"tracing-log",
]
@@ -3366,6 +3468,24 @@ version = "0.2.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e421abadd41a4225275504ea4d6566923418b7f05506fbc9c0fe86ba7396114b"
[[package]]
name = "tungstenite"
version = "0.24.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "18e5b8366ee7a95b16d32197d0b2604b43a0be89dc5fac9f8e96ccafbaedda8a"
dependencies = [
"byteorder",
"bytes",
"data-encoding",
"http",
"httparse",
"log",
"rand 0.8.5",
"sha1",
"thiserror 1.0.69",
"utf-8",
]
[[package]]
name = "tungstenite"
version = "0.28.0"
@@ -3507,7 +3627,7 @@ dependencies = [
[[package]]
name = "warzone-protocol"
version = "0.0.21"
version = "0.0.38"
dependencies = [
"base64",
"bincode",
@@ -4140,6 +4260,32 @@ version = "0.6.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "9edde0db4769d2dc68579893f2306b26c6ecfbe0ef499b013d731b7b9247e0b9"
[[package]]
name = "wzp-android"
version = "0.1.0"
dependencies = [
"anyhow",
"async-trait",
"bytes",
"cc",
"jni",
"libc",
"rand 0.8.5",
"rustls",
"serde",
"serde_json",
"thiserror 2.0.18",
"tokio",
"tracing",
"tracing-android",
"tracing-subscriber",
"wzp-codec",
"wzp-crypto",
"wzp-fec",
"wzp-proto",
"wzp-transport",
]
[[package]]
name = "wzp-client"
version = "0.1.0"
@@ -4167,9 +4313,11 @@ dependencies = [
name = "wzp-codec"
version = "0.1.0"
dependencies = [
"audiopus",
"bytemuck",
"codec2",
"nnnoiseless",
"opusic-c",
"opusic-sys",
"rand 0.8.5",
"tracing",
"wzp-proto",
@@ -4228,14 +4376,19 @@ dependencies = [
"async-trait",
"axum 0.7.9",
"bytes",
"chrono",
"dirs",
"futures-util",
"prometheus",
"quinn",
"reqwest",
"rustls",
"serde",
"serde_json",
"sha2",
"tokio",
"toml",
"tower-http",
"tracing",
"tracing-subscriber",
"wzp-client",
@@ -4252,10 +4405,13 @@ version = "0.1.0"
dependencies = [
"async-trait",
"bytes",
"ed25519-dalek",
"hkdf",
"quinn",
"rcgen",
"rustls",
"serde_json",
"sha2",
"tokio",
"tracing",
"wzp-proto",

12
Cargo.toml
View File

@@ -9,6 +9,7 @@ members = [
"crates/wzp-relay",
"crates/wzp-client",
"crates/wzp-web",
"crates/wzp-android",
]
[workspace.package]
@@ -34,12 +35,19 @@ quinn = "0.11"
raptorq = "2"
# Codec
audiopus = "0.3.0-rc.0"
# opusic-c: high-level safe bindings over libopus 1.5.2 (encoder side).
# opusic-sys: raw FFI for the decoder side — we build our own DecoderHandle
# because opusic-c::Decoder.inner is pub(crate) and cannot be reached for the
# Phase 3 DRED reconstruction path. See docs/PRD-dred-integration.md.
# Pinned exactly (no caret) for reproducible libopus 1.5.2 across the fleet.
opusic-c = { version = "=1.5.5", default-features = false, features = ["bundled", "dred"] }
opusic-sys = { version = "=0.6.0", default-features = false, features = ["bundled"] }
bytemuck = "1"
codec2 = "0.3"
# Crypto
x25519-dalek = { version = "2", features = ["static_secrets"] }
ed25519-dalek = { version = "2", features = ["rand_core"] }
ed25519-dalek = { version = "2", features = ["rand_core", "pkcs8"] }
chacha20poly1305 = "0.10"
hkdf = "0.12"
sha2 = "0.10"

87
README.md Normal file
View File

@@ -0,0 +1,87 @@
# WarzonePhone
Custom lossy VoIP protocol built in Rust. E2E encrypted, FEC-protected, adaptive quality, designed for hostile network conditions.
## Quick Start
```bash
# Build
cargo build --release
# Run relay
./target/release/wzp-relay --listen 0.0.0.0:4433
# Send a test tone
./target/release/wzp-client --send-tone 5 relay-addr:4433
# Web bridge (browser calls)
./target/release/wzp-web --port 8080 --relay 127.0.0.1:4433 --tls
# Open https://localhost:8080/room-name in two browser tabs
```
## Architecture
See [docs/ARCHITECTURE.md](docs/ARCHITECTURE.md) for the full system architecture with Mermaid diagrams covering:
- System overview and data flow
- Crate dependency graph (8 crates)
- Wire formats (MediaHeader, MiniHeader, TrunkFrame, SignalMessage)
- Cryptographic handshake (X25519 + Ed25519 + ChaCha20-Poly1305)
- Identity model (BIP39 seed, featherChat compatible)
- Quality profiles (GOOD/DEGRADED/CATASTROPHIC)
- FEC protection (RaptorQ with interleaving)
- Adaptive jitter buffer (NetEq-inspired)
- Telemetry stack (Prometheus + Grafana)
- Deployment topology
## Features
- **3 quality tiers**: Opus 24k (28.8 kbps) / Opus 6k (9 kbps) / Codec2 1200 (2.4 kbps)
- **RaptorQ FEC**: Recovers from 20-100% packet loss depending on tier
- **E2E encryption**: ChaCha20-Poly1305 with X25519 key exchange
- **Adaptive jitter buffer**: EMA-based playout delay tracking
- **Silence suppression**: VAD + comfort noise (~50% bandwidth savings)
- **ML noise removal**: RNNoise (nnnoiseless pure Rust port)
- **Mini-frames**: 67% header compression for steady-state packets
- **Trunking**: Multiplex sessions into batched datagrams
- **featherChat integration**: Shared BIP39 identity, token auth, call signaling
- **Prometheus metrics**: Relay, web bridge, inter-relay probes
- **Grafana dashboard**: Pre-built JSON with 18 panels
## Documentation
| Document | Description |
|----------|-------------|
| [ARCHITECTURE.md](docs/ARCHITECTURE.md) | Full system architecture with diagrams |
| [TELEMETRY.md](docs/TELEMETRY.md) | Prometheus metrics specification |
| [INTEGRATION_TASKS.md](docs/INTEGRATION_TASKS.md) | featherChat integration tracker |
| [WZP-FC-SHARED-CRATES.md](docs/WZP-FC-SHARED-CRATES.md) | Shared crate strategy |
| [grafana-dashboard.json](docs/grafana-dashboard.json) | Importable Grafana dashboard |
## Binaries
| Binary | Description |
|--------|-------------|
| `wzp-relay` | Relay daemon (SFU room mode, forward mode, probes) |
| `wzp-client` | CLI client (send-tone, record, live mic, echo-test, drift-test, sweep) |
| `wzp-web` | Browser bridge (HTTPS + WebSocket + AudioWorklet) |
| `wzp-bench` | Component benchmarks |
## Linux Build
```bash
./scripts/build-linux.sh --prepare # Create Hetzner VM + install deps
./scripts/build-linux.sh --build # Build release binaries
./scripts/build-linux.sh --transfer # Download to target/linux-x86_64/
./scripts/build-linux.sh --destroy # Delete VM
```
## Tests
```bash
cargo test --workspace # 272 tests
```
## License
MIT OR Apache-2.0

6
android/.gitignore vendored Normal file
View File

@@ -0,0 +1,6 @@
.gradle/
build/
app/build/
app/src/main/jniLibs/
local.properties
keystore/*.jks

BIN
android/android/app/src/main/jniLibs/arm64-v8a/libwzp_android.so Executable file
View File

Binary file not shown.

85
android/app/build.gradle.kts Normal file
View File

@@ -0,0 +1,85 @@
plugins {
id("com.android.application")
id("org.jetbrains.kotlin.android")
}
android {
namespace = "com.wzp.phone"
compileSdk = 34
defaultConfig {
applicationId = "com.wzp.phone"
minSdk = 26 // AAudio requires API 26
targetSdk = 34
versionCode = 1
versionName = "0.1.0"
ndk { abiFilters += listOf("arm64-v8a") }
}
signingConfigs {
create("release") {
storeFile = file("${project.rootDir}/keystore/wzp-release.jks")
storePassword = "wzphone2024"
keyAlias = "wzp-release"
keyPassword = "wzphone2024"
}
getByName("debug") {
storeFile = file("${project.rootDir}/keystore/wzp-debug.jks")
storePassword = "android"
keyAlias = "wzp-debug"
keyPassword = "android"
}
}
buildTypes {
debug {
signingConfig = signingConfigs.getByName("debug")
isDebuggable = true
}
release {
signingConfig = signingConfigs.getByName("release")
isMinifyEnabled = false
proguardFiles(
getDefaultProguardFile("proguard-android-optimize.txt"),
"proguard-rules.pro"
)
}
}
compileOptions {
sourceCompatibility = JavaVersion.VERSION_1_8
targetCompatibility = JavaVersion.VERSION_1_8
}
kotlinOptions {
jvmTarget = "1.8"
}
buildFeatures { compose = true }
composeOptions { kotlinCompilerExtensionVersion = "1.5.8" }
ndkVersion = "26.1.10909125"
}
// cargo-ndk integration: build the Rust native library for Android targets
tasks.register<Exec>("cargoNdkBuild") {
workingDir = file("${project.rootDir}/..")
commandLine(
"cargo", "ndk",
"-t", "arm64-v8a",
"-o", "${project.projectDir}/src/main/jniLibs",
"build", "--release", "-p", "wzp-android"
)
}
// Skip cargo-ndk in CI/Docker — .so is pre-built into jniLibs
// tasks.named("preBuild") { dependsOn("cargoNdkBuild") }
dependencies {
implementation("androidx.core:core-ktx:1.12.0")
implementation("androidx.lifecycle:lifecycle-runtime-ktx:2.7.0")
implementation("androidx.activity:activity-compose:1.8.2")
implementation(platform("androidx.compose:compose-bom:2024.01.00"))
implementation("androidx.compose.ui:ui")
implementation("androidx.compose.material3:material3")
}

9
android/app/proguard-rules.pro vendored Normal file
View File

@@ -0,0 +1,9 @@
# WZPhone ProGuard rules
# Keep JNI native methods
-keepclasseswithmembernames class * {
native <methods>;
}
# Keep the WZP engine bridge class
-keep class com.wzp.phone.engine.** { *; }

43
android/app/src/main/AndroidManifest.xml Normal file
View File

@@ -0,0 +1,43 @@
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android">
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
<uses-permission android:name="android.permission.FOREGROUND_SERVICE_MICROPHONE" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.BLUETOOTH_CONNECT" />
<uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" />
<application
android:name="com.wzp.WzpApplication"
android:label="WZ Phone"
android:supportsRtl="true"
android:theme="@android:style/Theme.Material.Light.NoActionBar">
<activity
android:name="com.wzp.ui.call.CallActivity"
android:exported="true"
android:launchMode="singleTask">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<service
android:name="com.wzp.service.CallService"
android:foregroundServiceType="microphone"
android:exported="false" />
<provider
android:name="androidx.core.content.FileProvider"
android:authorities="${applicationId}.fileprovider"
android:exported="false"
android:grantUriPermissions="true">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="@xml/file_paths" />
</provider>
</application>
</manifest>

0
android/app/src/main/java/com/wzp/.gitkeep Normal file
View File

38
android/app/src/main/java/com/wzp/WzpApplication.kt Normal file
View File

@@ -0,0 +1,38 @@
package com.wzp
import android.app.Application
import android.app.NotificationChannel
import android.app.NotificationManager
import android.os.Build
/**
* Application entry point for WarzonePhone.
*
* Creates the notification channel required for the foreground [com.wzp.service.CallService].
*/
class WzpApplication : Application() {
override fun onCreate() {
super.onCreate()
createNotificationChannel()
}
private fun createNotificationChannel() {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
val channel = NotificationChannel(
CHANNEL_ID,
"Active Call",
NotificationManager.IMPORTANCE_LOW
).apply {
description = "Shown while a VoIP call is in progress"
setShowBadge(false)
}
val nm = getSystemService(NotificationManager::class.java)
nm.createNotificationChannel(channel)
}
}
companion object {
const val CHANNEL_ID = "wzp_call_channel"
}
}

359
android/app/src/main/java/com/wzp/audio/AudioPipeline.kt Normal file
View File

@@ -0,0 +1,359 @@
package com.wzp.audio
import android.Manifest
import android.content.Context
import android.content.pm.PackageManager
import android.media.AudioAttributes
import android.media.AudioFormat
import android.media.AudioRecord
import android.media.AudioTrack
import android.media.MediaRecorder
import android.media.audiofx.AcousticEchoCanceler
import android.media.audiofx.NoiseSuppressor
import android.util.Log
import androidx.core.content.ContextCompat
import com.wzp.engine.WzpEngine
import java.io.BufferedOutputStream
import java.io.File
import java.io.FileOutputStream
import java.io.OutputStreamWriter
import java.nio.ByteBuffer
import java.nio.ByteOrder
import java.util.concurrent.CountDownLatch
import java.util.concurrent.TimeUnit
import kotlin.math.pow
import kotlin.math.sqrt
/**
* Audio pipeline that captures mic audio and plays received audio using
* Android AudioRecord/AudioTrack APIs running on JVM threads.
*
* PCM samples are shuttled to/from the Rust engine via JNI ring buffers:
* - Capture: AudioRecord → WzpEngine.writeAudio() → Rust encoder → network
* - Playout: network → Rust decoder → WzpEngine.readAudio() → AudioTrack
*
* All audio is 48kHz, mono, 16-bit PCM (matching Opus codec requirements).
*/
class AudioPipeline(private val context: Context) {
companion object {
private const val TAG = "AudioPipeline"
private const val SAMPLE_RATE = 48000
private const val CHANNEL_IN = AudioFormat.CHANNEL_IN_MONO
private const val CHANNEL_OUT = AudioFormat.CHANNEL_OUT_MONO
private const val ENCODING = AudioFormat.ENCODING_PCM_16BIT
/** 20ms frame at 48kHz = 960 samples */
private const val FRAME_SAMPLES = 960
}
@Volatile
private var running = false
/** Playout (incoming voice) gain in dB. 0 = unity. */
@Volatile
var playoutGainDb: Float = 0f
/** Capture (mic) gain in dB. 0 = unity. */
@Volatile
var captureGainDb: Float = 0f
/** Whether to attach hardware AEC. Must be set before start(). */
var aecEnabled: Boolean = true
/** Enable debug recording of PCM + RMS histogram to cache dir. */
var debugRecording: Boolean = false
private var captureThread: Thread? = null
private var playoutThread: Thread? = null
// DirectByteBuffers for zero-copy JNI audio transfer.
// Allocated as class fields (NOT locals) because ART's JIT OSR
// can null local variables when it replaces the stack frame mid-loop.
// These survive OSR because they're on the heap.
private val captureDirectBuf: ByteBuffer =
ByteBuffer.allocateDirect(FRAME_SAMPLES * 2).order(ByteOrder.LITTLE_ENDIAN)
private val playoutDirectBuf: ByteBuffer =
ByteBuffer.allocateDirect(FRAME_SAMPLES * 2).order(ByteOrder.LITTLE_ENDIAN)
/** Latch counted down by each audio thread after exiting its loop.
* stop() does NOT wait on this — teardown waits via awaitDrain(). */
private var drainLatch: CountDownLatch? = null
private val debugDir: File by lazy {
File(context.cacheDir, "wzp_debug").also { it.mkdirs() }
}
fun start(engine: WzpEngine) {
if (running) return
running = true
drainLatch = CountDownLatch(2) // one for capture, one for playout
captureThread = Thread({
runCapture(engine)
drainLatch?.countDown() // signal: capture loop exited, no more JNI calls
// Park thread forever — exiting triggers a libcrypto TLS destructor
// crash (SIGSEGV in OPENSSL_free) on Android when a JNI-calling thread exits.
parkThread()
}, "wzp-capture").apply {
isDaemon = true
priority = Thread.MAX_PRIORITY
start()
}
playoutThread = Thread({
runPlayout(engine)
drainLatch?.countDown() // signal: playout loop exited
parkThread()
}, "wzp-playout").apply {
isDaemon = true
priority = Thread.MAX_PRIORITY
start()
}
Log.i(TAG, "audio pipeline started")
}
fun stop() {
running = false
// Don't join threads — they are parked as daemons to avoid native TLS crash.
// Don't null thread refs or drainLatch — teardown() needs awaitDrain().
Log.i(TAG, "audio pipeline stopped (running=false)")
}
/** Block until both audio threads have exited their loops (max 200ms).
* After this returns, no more JNI calls to the engine will be made. */
fun awaitDrain(): Boolean {
val ok = drainLatch?.await(200, TimeUnit.MILLISECONDS) ?: true
if (!ok) Log.w(TAG, "awaitDrain: audio threads did not drain in 200ms")
captureThread = null
playoutThread = null
drainLatch = null
return ok
}
private fun applyGain(pcm: ShortArray, count: Int, db: Float) {
if (db == 0f) return
val linear = 10f.pow(db / 20f)
for (i in 0 until count) {
pcm[i] = (pcm[i] * linear).toInt().coerceIn(-32000, 32000).toShort()
}
}
private fun computeRms(pcm: ShortArray, count: Int): Int {
var sumSq = 0.0
for (i in 0 until count) {
val s = pcm[i].toDouble()
sumSq += s * s
}
return sqrt(sumSq / count).toInt()
}
private fun parkThread() {
try {
Thread.sleep(Long.MAX_VALUE)
} catch (_: InterruptedException) {
// process exiting
}
}
private fun runCapture(engine: WzpEngine) {
if (ContextCompat.checkSelfPermission(context, Manifest.permission.RECORD_AUDIO)
!= PackageManager.PERMISSION_GRANTED
) {
Log.e(TAG, "RECORD_AUDIO permission not granted, capture disabled")
return
}
val minBuf = AudioRecord.getMinBufferSize(SAMPLE_RATE, CHANNEL_IN, ENCODING)
val bufSize = maxOf(minBuf, FRAME_SAMPLES * 2 * 4) // at least 4 frames
val recorder = try {
AudioRecord(
MediaRecorder.AudioSource.VOICE_COMMUNICATION,
SAMPLE_RATE,
CHANNEL_IN,
ENCODING,
bufSize
)
} catch (e: SecurityException) {
Log.e(TAG, "AudioRecord SecurityException: ${e.message}")
return
}
if (recorder.state != AudioRecord.STATE_INITIALIZED) {
Log.e(TAG, "AudioRecord failed to initialize")
recorder.release()
return
}
// Attach hardware AEC if available and enabled in settings
var aec: AcousticEchoCanceler? = null
var ns: NoiseSuppressor? = null
if (aecEnabled) {
if (AcousticEchoCanceler.isAvailable()) {
try {
aec = AcousticEchoCanceler.create(recorder.audioSessionId)
aec?.enabled = true
Log.i(TAG, "AEC enabled (session=${recorder.audioSessionId})")
} catch (e: Exception) {
Log.w(TAG, "AEC init failed: ${e.message}")
}
} else {
Log.w(TAG, "AEC not available on this device")
}
// Attach hardware noise suppressor if available
if (NoiseSuppressor.isAvailable()) {
try {
ns = NoiseSuppressor.create(recorder.audioSessionId)
ns?.enabled = true
Log.i(TAG, "NoiseSuppressor enabled")
} catch (e: Exception) {
Log.w(TAG, "NoiseSuppressor init failed: ${e.message}")
}
}
} else {
Log.i(TAG, "AEC disabled by user setting")
}
recorder.startRecording()
Log.i(TAG, "capture started: ${SAMPLE_RATE}Hz mono, buf=$bufSize, aec=${aec?.enabled}, ns=${ns?.enabled}")
val pcm = ShortArray(FRAME_SAMPLES)
// Debug: PCM file + RMS CSV
var pcmOut: BufferedOutputStream? = null
var rmsCsv: OutputStreamWriter? = null
val byteConv = ByteBuffer.allocate(FRAME_SAMPLES * 2).order(ByteOrder.LITTLE_ENDIAN)
var frameIdx = 0L
if (debugRecording) {
try {
pcmOut = BufferedOutputStream(FileOutputStream(File(debugDir, "capture.pcm")), 65536)
rmsCsv = OutputStreamWriter(FileOutputStream(File(debugDir, "capture_rms.csv")))
rmsCsv.write("frame,time_ms,rms\n")
} catch (e: Exception) {
Log.w(TAG, "debug recording init failed: ${e.message}")
}
}
try {
while (running) {
val read = recorder.read(pcm, 0, FRAME_SAMPLES)
if (read > 0) {
applyGain(pcm, read, captureGainDb)
// Zero-copy write via DirectByteBuffer (class field, survives JIT OSR)
captureDirectBuf.clear()
captureDirectBuf.asShortBuffer().put(pcm, 0, read)
engine.writeAudioDirect(captureDirectBuf, read)
// Debug: write raw PCM + RMS
if (pcmOut != null) {
byteConv.clear()
for (i in 0 until read) byteConv.putShort(pcm[i])
pcmOut.write(byteConv.array(), 0, read * 2)
}
if (rmsCsv != null) {
val rms = computeRms(pcm, read)
val timeMs = frameIdx * FRAME_SAMPLES * 1000L / SAMPLE_RATE
rmsCsv.write("$frameIdx,$timeMs,$rms\n")
}
frameIdx++
} else if (read < 0) {
Log.e(TAG, "AudioRecord.read error: $read")
break
}
}
} finally {
pcmOut?.close()
rmsCsv?.close()
recorder.stop()
aec?.release()
ns?.release()
recorder.release()
Log.i(TAG, "capture stopped (frames=$frameIdx)")
}
}
private fun runPlayout(engine: WzpEngine) {
val minBuf = AudioTrack.getMinBufferSize(SAMPLE_RATE, CHANNEL_OUT, ENCODING)
val bufSize = maxOf(minBuf, FRAME_SAMPLES * 2 * 4)
val track = AudioTrack.Builder()
.setAudioAttributes(
AudioAttributes.Builder()
.setUsage(AudioAttributes.USAGE_VOICE_COMMUNICATION)
.setContentType(AudioAttributes.CONTENT_TYPE_SPEECH)
.build()
)
.setAudioFormat(
AudioFormat.Builder()
.setSampleRate(SAMPLE_RATE)
.setChannelMask(CHANNEL_OUT)
.setEncoding(ENCODING)
.build()
)
.setBufferSizeInBytes(bufSize)
.setTransferMode(AudioTrack.MODE_STREAM)
.build()
if (track.state != AudioTrack.STATE_INITIALIZED) {
Log.e(TAG, "AudioTrack failed to initialize")
track.release()
return
}
track.play()
Log.i(TAG, "playout started: ${SAMPLE_RATE}Hz mono, buf=$bufSize")
val pcm = ShortArray(FRAME_SAMPLES)
val silence = ShortArray(FRAME_SAMPLES)
// Debug: PCM file + RMS CSV for playout
var pcmOut: BufferedOutputStream? = null
var rmsCsv: OutputStreamWriter? = null
val byteConv = ByteBuffer.allocate(FRAME_SAMPLES * 2).order(ByteOrder.LITTLE_ENDIAN)
var frameIdx = 0L
if (debugRecording) {
try {
pcmOut = BufferedOutputStream(FileOutputStream(File(debugDir, "playout.pcm")), 65536)
rmsCsv = OutputStreamWriter(FileOutputStream(File(debugDir, "playout_rms.csv")))
rmsCsv.write("frame,time_ms,rms\n")
} catch (e: Exception) {
Log.w(TAG, "debug playout recording init failed: ${e.message}")
}
}
try {
while (running) {
// Zero-copy read via DirectByteBuffer (class field, survives JIT OSR)
playoutDirectBuf.clear()
val read = engine.readAudioDirect(playoutDirectBuf, FRAME_SAMPLES)
if (read >= FRAME_SAMPLES) {
playoutDirectBuf.rewind()
playoutDirectBuf.asShortBuffer().get(pcm, 0, read)
applyGain(pcm, read, playoutGainDb)
track.write(pcm, 0, read)
// Debug: write raw PCM + RMS
if (pcmOut != null) {
byteConv.clear()
for (i in 0 until read) byteConv.putShort(pcm[i])
pcmOut.write(byteConv.array(), 0, read * 2)
}
if (rmsCsv != null) {
val rms = computeRms(pcm, read)
val timeMs = frameIdx * FRAME_SAMPLES * 1000L / SAMPLE_RATE
rmsCsv.write("$frameIdx,$timeMs,$rms\n")
}
frameIdx++
} else {
track.write(silence, 0, FRAME_SAMPLES)
// Log silence frames to RMS as 0
if (rmsCsv != null) {
val timeMs = frameIdx * FRAME_SAMPLES * 1000L / SAMPLE_RATE
rmsCsv.write("$frameIdx,$timeMs,0\n")
}
frameIdx++
Thread.sleep(5)
}
}
} finally {
pcmOut?.close()
rmsCsv?.close()
track.stop()
track.release()
Log.i(TAG, "playout stopped (frames=$frameIdx)")
}
}
}

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package com.wzp.audio
import android.content.Context
import android.media.AudioDeviceCallback
import android.media.AudioDeviceInfo
import android.media.AudioManager
import android.os.Handler
import android.os.Looper
/**
* Manages audio routing between earpiece, speaker, and Bluetooth devices.
*
* Wraps [AudioManager] operations and listens for device connection changes
* via [AudioDeviceCallback] (API 23+).
*
* Usage:
* 1. Call [register] when the call starts
* 2. Use [setSpeaker] and [setBluetoothSco] to switch routes
* 3. Call [unregister] when the call ends
*/
class AudioRouteManager(context: Context) {
private val audioManager = context.getSystemService(Context.AUDIO_SERVICE) as AudioManager
private val mainHandler = Handler(Looper.getMainLooper())
/** Listener for audio route changes. */
var onRouteChanged: ((AudioRoute) -> Unit)? = null
/** Current active route. */
var currentRoute: AudioRoute = AudioRoute.EARPIECE
private set
// -- Device callback (API 23+) -------------------------------------------
private val deviceCallback = object : AudioDeviceCallback() {
override fun onAudioDevicesAdded(addedDevices: Array<out AudioDeviceInfo>) {
for (device in addedDevices) {
if (device.type == AudioDeviceInfo.TYPE_BLUETOOTH_SCO) {
// A Bluetooth headset was connected — optionally auto-switch
onRouteChanged?.invoke(AudioRoute.BLUETOOTH)
}
}
}
override fun onAudioDevicesRemoved(removedDevices: Array<out AudioDeviceInfo>) {
for (device in removedDevices) {
if (device.type == AudioDeviceInfo.TYPE_BLUETOOTH_SCO) {
// Bluetooth disconnected — fall back to earpiece or speaker
val fallback = if (audioManager.isSpeakerphoneOn) {
AudioRoute.SPEAKER
} else {
AudioRoute.EARPIECE
}
currentRoute = fallback
onRouteChanged?.invoke(fallback)
}
}
}
}
// -- Public API -----------------------------------------------------------
/** Register the device callback. Call when a call starts. */
fun register() {
audioManager.registerAudioDeviceCallback(deviceCallback, mainHandler)
}
/** Unregister the device callback and release Bluetooth SCO. Call when the call ends. */
fun unregister() {
audioManager.unregisterAudioDeviceCallback(deviceCallback)
stopBluetoothSco()
}
/**
* Enable or disable the loudspeaker.
*
* When enabling speaker, Bluetooth SCO is disconnected.
*/
@Suppress("DEPRECATION")
fun setSpeaker(enabled: Boolean) {
if (enabled) {
stopBluetoothSco()
}
audioManager.isSpeakerphoneOn = enabled
currentRoute = if (enabled) AudioRoute.SPEAKER else AudioRoute.EARPIECE
onRouteChanged?.invoke(currentRoute)
}
/**
* Enable or disable Bluetooth SCO (Synchronous Connection Oriented) audio.
*
* When enabling Bluetooth, the speaker is turned off.
*/
@Suppress("DEPRECATION")
fun setBluetoothSco(enabled: Boolean) {
if (enabled) {
audioManager.isSpeakerphoneOn = false
audioManager.startBluetoothSco()
audioManager.isBluetoothScoOn = true
currentRoute = AudioRoute.BLUETOOTH
} else {
stopBluetoothSco()
currentRoute = AudioRoute.EARPIECE
}
onRouteChanged?.invoke(currentRoute)
}
/** Check whether a Bluetooth SCO device is currently connected. */
fun isBluetoothAvailable(): Boolean {
val devices = audioManager.getDevices(AudioManager.GET_DEVICES_OUTPUTS)
return devices.any { it.type == AudioDeviceInfo.TYPE_BLUETOOTH_SCO }
}
/** List available output audio routes. */
fun availableRoutes(): List<AudioRoute> {
val routes = mutableListOf(AudioRoute.EARPIECE, AudioRoute.SPEAKER)
if (isBluetoothAvailable()) {
routes.add(AudioRoute.BLUETOOTH)
}
return routes
}
// -- Internal -------------------------------------------------------------
@Suppress("DEPRECATION")
private fun stopBluetoothSco() {
if (audioManager.isBluetoothScoOn) {
audioManager.isBluetoothScoOn = false
audioManager.stopBluetoothSco()
}
}
}
/** Audio output route. */
enum class AudioRoute {
/** Phone earpiece (default for calls). */
EARPIECE,
/** Built-in loudspeaker. */
SPEAKER,
/** Bluetooth SCO headset/headphones. */
BLUETOOTH
}

203
android/app/src/main/java/com/wzp/data/SettingsRepository.kt Normal file
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package com.wzp.data
import android.content.Context
import android.content.SharedPreferences
import com.wzp.ui.call.ServerEntry
import org.json.JSONArray
import org.json.JSONObject
import java.security.SecureRandom
/**
* Persists user settings via SharedPreferences.
*
* Stores: servers, default server index, room name, alias, gain values,
* IPv6 preference, and the identity seed (hex-encoded 32 bytes).
*/
class SettingsRepository(context: Context) {
private val prefs: SharedPreferences =
context.applicationContext.getSharedPreferences("wzp_settings", Context.MODE_PRIVATE)
companion object {
private const val KEY_SERVERS = "servers_json"
private const val KEY_SELECTED_SERVER = "selected_server"
private const val KEY_ROOM = "room_name"
private const val KEY_ALIAS = "alias"
private const val KEY_PLAYOUT_GAIN = "playout_gain_db"
private const val KEY_CAPTURE_GAIN = "capture_gain_db"
private const val KEY_PREFER_IPV6 = "prefer_ipv6"
private const val KEY_IDENTITY_SEED = "identity_seed_hex"
private const val KEY_AEC_ENABLED = "aec_enabled"
private const val KEY_DEBUG_RECORDING = "debug_recording"
private const val KEY_RECENT_ROOMS = "recent_rooms"
private const val TOFU_PREFIX = "tofu_"
}
// --- Servers ---
fun saveServers(servers: List<ServerEntry>) {
val arr = JSONArray()
servers.forEach { entry ->
arr.put(JSONObject().apply {
put("address", entry.address)
put("label", entry.label)
})
}
prefs.edit().putString(KEY_SERVERS, arr.toString()).apply()
}
fun loadServers(): List<ServerEntry>? {
val json = prefs.getString(KEY_SERVERS, null) ?: return null
return try {
val arr = JSONArray(json)
(0 until arr.length()).map { i ->
val obj = arr.getJSONObject(i)
ServerEntry(obj.getString("address"), obj.getString("label"))
}
} catch (_: Exception) { null }
}
fun saveSelectedServer(index: Int) {
prefs.edit().putInt(KEY_SELECTED_SERVER, index).apply()
}
fun loadSelectedServer(): Int = prefs.getInt(KEY_SELECTED_SERVER, 0)
// --- Room ---
fun saveRoom(name: String) { prefs.edit().putString(KEY_ROOM, name).apply() }
fun loadRoom(): String = prefs.getString(KEY_ROOM, "android") ?: "android"
// --- Alias ---
fun saveAlias(alias: String) { prefs.edit().putString(KEY_ALIAS, alias).apply() }
/**
* Load alias, generating a random name on first launch.
*/
fun getOrCreateAlias(): String {
val existing = prefs.getString(KEY_ALIAS, null)
if (!existing.isNullOrEmpty()) return existing
val name = generateRandomName()
prefs.edit().putString(KEY_ALIAS, name).apply()
return name
}
private fun generateRandomName(): String {
val adjectives = listOf(
"Swift", "Silent", "Brave", "Calm", "Dark", "Fierce", "Ghost",
"Iron", "Lucky", "Noble", "Quick", "Sharp", "Storm", "Wild",
"Cold", "Bright", "Lone", "Red", "Grey", "Frosty", "Dusty",
"Rusty", "Neon", "Void", "Solar", "Lunar", "Cyber", "Pixel",
"Sonic", "Hyper", "Turbo", "Nano", "Mega", "Ultra", "Zinc"
)
val nouns = listOf(
"Wolf", "Hawk", "Fox", "Bear", "Lynx", "Crow", "Viper",
"Cobra", "Tiger", "Eagle", "Shark", "Raven", "Falcon", "Otter",
"Mantis", "Panda", "Jackal", "Badger", "Heron", "Bison",
"Condor", "Coyote", "Gecko", "Hornet", "Marten", "Osprey",
"Parrot", "Puma", "Raptor", "Stork", "Toucan", "Walrus"
)
val adj = adjectives.random()
val noun = nouns.random()
return "$adj $noun"
}
// --- Gain ---
fun savePlayoutGain(db: Float) { prefs.edit().putFloat(KEY_PLAYOUT_GAIN, db).apply() }
fun loadPlayoutGain(): Float = prefs.getFloat(KEY_PLAYOUT_GAIN, 0f)
fun saveCaptureGain(db: Float) { prefs.edit().putFloat(KEY_CAPTURE_GAIN, db).apply() }
fun loadCaptureGain(): Float = prefs.getFloat(KEY_CAPTURE_GAIN, 0f)
// --- IPv6 ---
fun savePreferIPv6(prefer: Boolean) { prefs.edit().putBoolean(KEY_PREFER_IPV6, prefer).apply() }
fun loadPreferIPv6(): Boolean = prefs.getBoolean(KEY_PREFER_IPV6, false)
// --- AEC ---
fun saveAecEnabled(enabled: Boolean) { prefs.edit().putBoolean(KEY_AEC_ENABLED, enabled).apply() }
fun loadAecEnabled(): Boolean = prefs.getBoolean(KEY_AEC_ENABLED, true)
// --- Debug recording ---
fun saveDebugRecording(enabled: Boolean) { prefs.edit().putBoolean(KEY_DEBUG_RECORDING, enabled).apply() }
fun loadDebugRecording(): Boolean = prefs.getBoolean(KEY_DEBUG_RECORDING, false)
// --- Codec choice ---
// 0 = Opus (GOOD), 1 = Opus Low (DEGRADED), 2 = Codec2 (CATASTROPHIC)
fun saveCodecChoice(choice: Int) { prefs.edit().putInt("codec_choice", choice).apply() }
fun loadCodecChoice(): Int = prefs.getInt("codec_choice", 0)
// --- Identity seed ---
/**
* Get or generate the identity seed. On first call, generates a random
* 32-byte seed and persists it. Subsequent calls return the same seed.
*/
fun getOrCreateSeedHex(): String {
val existing = prefs.getString(KEY_IDENTITY_SEED, null)
if (!existing.isNullOrEmpty()) return existing
val seed = ByteArray(32).also { SecureRandom().nextBytes(it) }
val hex = seed.joinToString("") { "%02x".format(it) }
prefs.edit().putString(KEY_IDENTITY_SEED, hex).apply()
return hex
}
fun loadSeedHex(): String = prefs.getString(KEY_IDENTITY_SEED, "") ?: ""
fun saveSeedHex(hex: String) {
prefs.edit().putString(KEY_IDENTITY_SEED, hex).apply()
}
// --- Recent rooms ---
data class RecentRoom(val relay: String, val room: String)
fun addRecentRoom(relay: String, room: String) {
val rooms = loadRecentRooms().toMutableList()
rooms.removeAll { it.relay == relay && it.room == room }
rooms.add(0, RecentRoom(relay, room))
if (rooms.size > 5) rooms.subList(5, rooms.size).clear()
val arr = JSONArray()
rooms.forEach { arr.put(JSONObject().apply { put("relay", it.relay); put("room", it.room) }) }
prefs.edit().putString(KEY_RECENT_ROOMS, arr.toString()).apply()
}
fun loadRecentRooms(): List<RecentRoom> {
val json = prefs.getString(KEY_RECENT_ROOMS, null) ?: return emptyList()
return try {
val arr = JSONArray(json)
(0 until arr.length()).map { i ->
val o = arr.getJSONObject(i)
RecentRoom(o.getString("relay"), o.getString("room"))
}
} catch (_: Exception) { emptyList() }
}
fun clearRecentRooms() {
prefs.edit().remove(KEY_RECENT_ROOMS).apply()
}
// --- Server fingerprint TOFU ---
fun saveServerFingerprint(address: String, fingerprint: String) {
prefs.edit().putString("$TOFU_PREFIX$address", fingerprint).apply()
}
fun loadServerFingerprint(address: String): String? {
return prefs.getString("$TOFU_PREFIX$address", null)
}
// --- Ping RTT cache ---
fun savePingRtt(address: String, rttMs: Int) {
prefs.edit().putInt("ping_rtt_$address", rttMs).apply()
}
fun loadPingRtt(address: String): Int {
return prefs.getInt("ping_rtt_$address", -1)
}
}

242
android/app/src/main/java/com/wzp/debug/DebugReporter.kt Normal file
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package com.wzp.debug
import android.content.Context
import android.util.Log
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.withContext
import java.io.BufferedOutputStream
import java.io.ByteArrayOutputStream
import java.io.File
import java.io.FileInputStream
import java.io.FileOutputStream
import java.nio.ByteBuffer
import java.nio.ByteOrder
import java.text.SimpleDateFormat
import java.util.Date
import java.util.Locale
import java.util.zip.ZipEntry
import java.util.zip.ZipOutputStream
/**
* Collects call debug data (audio recordings, logs, histograms, stats)
* into a zip file for email sharing.
*/
class DebugReporter(private val context: Context) {
companion object {
private const val TAG = "DebugReporter"
private const val SAMPLE_RATE = 48000
}
/**
* Build a zip with all debug data.
* Returns the zip File on success, or null on failure.
*/
suspend fun collectZip(
callDurationSecs: Double,
finalStatsJson: String,
aecEnabled: Boolean,
alias: String,
server: String,
room: String
): File? = withContext(Dispatchers.IO) {
try {
val debugDir = File(context.cacheDir, "wzp_debug")
val timestamp = SimpleDateFormat("yyyyMMdd_HHmmss", Locale.US).format(Date())
val zipFile = File(context.cacheDir, "wzp_debug_${timestamp}.zip")
ZipOutputStream(BufferedOutputStream(FileOutputStream(zipFile))).use { zos ->
// Phase 4: extract DRED / classical PLC counters from the
// stats JSON so they're visible in the meta preamble at a
// glance, not buried in the trailing JSON dump.
val dredReconstructions = extractLongField(finalStatsJson, "dred_reconstructions")
val classicalPlc = extractLongField(finalStatsJson, "classical_plc_invocations")
val framesDecoded = extractLongField(finalStatsJson, "frames_decoded")
val fecRecovered = extractLongField(finalStatsJson, "fec_recovered")
// 1. Call metadata
val meta = buildString {
appendLine("=== WZ Phone Debug Report ===")
appendLine("Timestamp: $timestamp")
appendLine("Alias: $alias")
appendLine("Server: $server")
appendLine("Room: $room")
appendLine("Duration: ${"%.1f".format(callDurationSecs)}s")
appendLine("AEC: ${if (aecEnabled) "ON" else "OFF"}")
appendLine("Device: ${android.os.Build.MANUFACTURER} ${android.os.Build.MODEL}")
appendLine("Android: ${android.os.Build.VERSION.RELEASE} (API ${android.os.Build.VERSION.SDK_INT})")
appendLine()
appendLine("=== Loss Recovery ===")
appendLine("Frames decoded: $framesDecoded")
appendLine("DRED reconstructions: $dredReconstructions (Opus neural recovery)")
appendLine("Classical PLC: $classicalPlc (fallback)")
appendLine("RaptorQ FEC recovered: $fecRecovered (Codec2 only)")
if (framesDecoded > 0) {
val dredPct = 100.0 * dredReconstructions / framesDecoded
val plcPct = 100.0 * classicalPlc / framesDecoded
appendLine("DRED rate: ${"%.2f".format(dredPct)}%")
appendLine("Classical PLC rate: ${"%.2f".format(plcPct)}%")
}
appendLine()
appendLine("=== Final Stats ===")
appendLine(finalStatsJson)
}
addTextEntry(zos, "meta.txt", meta)
// 2. Logcat — WZP-related tags
val logcat = collectLogcat()
addTextEntry(zos, "logcat.txt", logcat)
// 3. Capture audio (mic) → WAV
val captureRaw = File(debugDir, "capture.pcm")
if (captureRaw.exists() && captureRaw.length() > 0) {
addWavEntry(zos, "capture.wav", captureRaw)
Log.i(TAG, "capture.pcm: ${captureRaw.length()} bytes -> WAV")
}
// 4. Playout audio (speaker) → WAV
val playoutRaw = File(debugDir, "playout.pcm")
if (playoutRaw.exists() && playoutRaw.length() > 0) {
addWavEntry(zos, "playout.wav", playoutRaw)
Log.i(TAG, "playout.pcm: ${playoutRaw.length()} bytes -> WAV")
}
// 5. RMS histogram CSV
val captureHist = File(debugDir, "capture_rms.csv")
if (captureHist.exists()) addFileEntry(zos, "capture_rms.csv", captureHist)
val playoutHist = File(debugDir, "playout_rms.csv")
if (playoutHist.exists()) addFileEntry(zos, "playout_rms.csv", playoutHist)
}
Log.i(TAG, "zip created: ${zipFile.length()} bytes (${zipFile.length() / 1024}KB)")
// Clean up raw debug files (keep zip)
debugDir.listFiles()?.forEach { it.delete() }
zipFile
} catch (e: Exception) {
Log.e(TAG, "debug report failed", e)
null
}
}
/** Clean up any leftover debug files from a previous session. */
fun prepareForCall() {
val debugDir = File(context.cacheDir, "wzp_debug")
if (debugDir.exists()) {
debugDir.listFiles()?.forEach { it.delete() }
}
debugDir.mkdirs()
// Also clean up old zip files
context.cacheDir.listFiles()?.filter { it.name.startsWith("wzp_debug_") }?.forEach { it.delete() }
}
private fun collectLogcat(): String {
return try {
val process = Runtime.getRuntime().exec(
arrayOf(
"logcat", "-d",
"-t", "5000",
"--format", "threadtime"
)
)
val output = process.inputStream.bufferedReader().readText()
process.waitFor()
output.lines()
.filter { line ->
line.contains("wzp", ignoreCase = true) ||
line.contains("WzpEngine") ||
line.contains("AudioPipeline") ||
line.contains("WzpCall") ||
line.contains("CallService") ||
line.contains("AudioTrack") ||
line.contains("AudioRecord") ||
line.contains("AcousticEchoCanceler") ||
line.contains("NoiseSuppressor") ||
line.contains("FATAL") ||
line.contains("ANR") ||
line.contains("AudioFlinger") ||
line.contains("DebugReporter") ||
line.contains("QUIC") ||
line.contains("quinn") ||
line.contains("send task") ||
line.contains("recv task") ||
line.contains("send stats") ||
line.contains("recv stats") ||
line.contains("send_media") ||
line.contains("FEC block") ||
line.contains("recv gap") ||
line.contains("frames_dropped") ||
line.contains("opus")
}
.joinToString("\n")
} catch (e: Exception) {
"Failed to collect logcat: ${e.message}"
}
}
private fun addWavEntry(zos: ZipOutputStream, name: String, pcmFile: File) {
val dataSize = pcmFile.length().toInt()
val byteRate = SAMPLE_RATE * 1 * 16 / 8
val blockAlign = 1 * 16 / 8
zos.putNextEntry(ZipEntry(name))
// Write WAV header (44 bytes)
val header = ByteBuffer.allocate(44).order(ByteOrder.LITTLE_ENDIAN)
header.put("RIFF".toByteArray())
header.putInt(36 + dataSize)
header.put("WAVE".toByteArray())
header.put("fmt ".toByteArray())
header.putInt(16)
header.putShort(1) // PCM
header.putShort(1) // mono
header.putInt(SAMPLE_RATE)
header.putInt(byteRate)
header.putShort(blockAlign.toShort())
header.putShort(16) // bits per sample
header.put("data".toByteArray())
header.putInt(dataSize)
zos.write(header.array())
// Stream PCM data directly (avoids loading entire file into memory)
FileInputStream(pcmFile).use { it.copyTo(zos) }
zos.closeEntry()
}
private fun addTextEntry(zos: ZipOutputStream, name: String, content: String) {
zos.putNextEntry(ZipEntry(name))
zos.write(content.toByteArray())
zos.closeEntry()
}
private fun addFileEntry(zos: ZipOutputStream, name: String, file: File) {
zos.putNextEntry(ZipEntry(name))
FileInputStream(file).use { it.copyTo(zos) }
zos.closeEntry()
}
/**
* Tiny JSON field extractor — pulls an integer value for a top-level
* field like `"dred_reconstructions":42`. We don't want to pull in a
* full JSON parser just for the debug preamble, and the CallStats
* output is a flat record with well-known field names.
*
* Returns 0 if the field is missing or unparseable.
*/
private fun extractLongField(json: String, field: String): Long {
val key = "\"$field\":"
val idx = json.indexOf(key)
if (idx < 0) return 0
var i = idx + key.length
// Skip whitespace
while (i < json.length && json[i].isWhitespace()) i++
val start = i
while (i < json.length && (json[i].isDigit() || json[i] == '-')) i++
return try {
json.substring(start, i).toLong()
} catch (_: NumberFormatException) {
0
}
}
}

120
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package com.wzp.engine
import org.json.JSONArray
import org.json.JSONObject
/**
* Snapshot of call statistics, mirroring the Rust `CallStats` struct.
*
* Constructed from the JSON string returned by [WzpEngine.getStats].
*/
data class CallStats(
/** Current call state ordinal (see [CallStateConstants]). */
val state: Int = 0,
/** Call duration in seconds. */
val durationSecs: Double = 0.0,
/** Quality tier: 0 = Good, 1 = Degraded, 2 = Catastrophic. */
val qualityTier: Int = 0,
/** Observed packet loss percentage (0..100). */
val lossPct: Float = 0f,
/** Smoothed round-trip time in milliseconds. */
val rttMs: Int = 0,
/** Jitter in milliseconds. */
val jitterMs: Int = 0,
/** Current jitter buffer depth in packets. */
val jitterBufferDepth: Int = 0,
/** Total frames encoded since call start. */
val framesEncoded: Long = 0,
/** Total frames decoded since call start. */
val framesDecoded: Long = 0,
/** Number of playout underruns (buffer empty when audio was needed). */
val underruns: Long = 0,
/** Frames recovered by FEC. */
val fecRecovered: Long = 0,
/** Current mic audio level (RMS, 0-32767). */
val audioLevel: Int = 0,
/** Our current outgoing codec (e.g. "Opus24k"). */
val currentCodec: String = "",
/** Last seen incoming codec from peers. */
val peerCodec: String = "",
/** Whether auto quality mode is active. */
val autoMode: Boolean = false,
/** Number of participants in the room. */
val roomParticipantCount: Int = 0,
/** Participants in the room (fingerprint + optional alias). */
val roomParticipants: List<RoomMember> = emptyList(),
/** SAS verification code (4-digit, null if not in a call). */
val sasCode: Int? = null,
/** Incoming call ID (or "relay|room" for CallSetup). */
val incomingCallId: String? = null,
/** Incoming caller's fingerprint. */
val incomingCallerFp: String? = null,
/** Incoming caller's alias. */
val incomingCallerAlias: String? = null,
) {
/** Human-readable quality label. */
val qualityLabel: String
get() = when (qualityTier) {
0 -> "Good"
1 -> "Degraded"
2 -> "Catastrophic"
else -> "Unknown"
}
companion object {
private fun parseParticipants(arr: JSONArray?): List<RoomMember> {
if (arr == null) return emptyList()
return (0 until arr.length()).map { i ->
val o = arr.getJSONObject(i)
RoomMember(
fingerprint = o.optString("fingerprint", ""),
alias = if (o.isNull("alias")) null else o.optString("alias", null),
relayLabel = if (o.isNull("relay_label")) null else o.optString("relay_label", null)
)
}
}
/** Deserialise from the JSON string produced by the native engine. */
fun fromJson(json: String): CallStats {
return try {
val obj = JSONObject(json)
CallStats(
state = obj.optInt("state", 0),
durationSecs = obj.optDouble("duration_secs", 0.0),
qualityTier = obj.optInt("quality_tier", 0),
lossPct = obj.optDouble("loss_pct", 0.0).toFloat(),
rttMs = obj.optInt("rtt_ms", 0),
jitterMs = obj.optInt("jitter_ms", 0),
jitterBufferDepth = obj.optInt("jitter_buffer_depth", 0),
framesEncoded = obj.optLong("frames_encoded", 0),
framesDecoded = obj.optLong("frames_decoded", 0),
underruns = obj.optLong("underruns", 0),
fecRecovered = obj.optLong("fec_recovered", 0),
audioLevel = obj.optInt("audio_level", 0),
currentCodec = obj.optString("current_codec", ""),
peerCodec = obj.optString("peer_codec", ""),
autoMode = obj.optBoolean("auto_mode", false),
roomParticipantCount = obj.optInt("room_participant_count", 0),
roomParticipants = parseParticipants(obj.optJSONArray("room_participants")),
sasCode = if (obj.has("sas_code")) obj.optInt("sas_code") else null,
incomingCallId = if (obj.isNull("incoming_call_id")) null else obj.optString("incoming_call_id", null),
incomingCallerFp = if (obj.isNull("incoming_caller_fp")) null else obj.optString("incoming_caller_fp", null),
incomingCallerAlias = if (obj.isNull("incoming_caller_alias")) null else obj.optString("incoming_caller_alias", null),
)
} catch (e: Exception) {
CallStats()
}
}
}
}
data class RoomMember(
val fingerprint: String,
val alias: String? = null,
val relayLabel: String? = null
) {
/** Short display name: alias if set, otherwise first 8 chars of fingerprint. */
val displayName: String
get() = alias?.takeIf { it.isNotBlank() }
?: fingerprint.take(8).ifEmpty { "unknown" }
}

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package com.wzp.engine
import org.json.JSONObject
/**
* Persistent signal connection for direct 1:1 calls.
* Separate from WzpEngine — survives across calls.
*
* Lifecycle: connect() → [placeCall/answerCall] → destroy()
*/
class SignalManager {
private var handle: Long = 0L
val isConnected: Boolean get() = handle != 0L
/**
* Connect to relay and register for direct calls.
* MUST be called from a thread with sufficient stack (8MB).
* Blocks briefly during QUIC connect + register, then returns.
*/
fun connect(relay: String, seedHex: String): Boolean {
if (handle != 0L) return true // already connected
handle = nativeSignalConnect(relay, seedHex)
return handle != 0L
}
/** Get current signal state as parsed object. Non-blocking. */
fun getState(): SignalState {
if (handle == 0L) return SignalState()
val json = nativeSignalGetState(handle) ?: return SignalState()
return try {
val obj = JSONObject(json)
SignalState(
status = obj.optString("status", "idle"),
fingerprint = obj.optString("fingerprint", ""),
incomingCallId = if (obj.isNull("incoming_call_id")) null else obj.optString("incoming_call_id"),
incomingCallerFp = if (obj.isNull("incoming_caller_fp")) null else obj.optString("incoming_caller_fp"),
incomingCallerAlias = if (obj.isNull("incoming_caller_alias")) null else obj.optString("incoming_caller_alias"),
callSetupRelay = if (obj.isNull("call_setup_relay")) null else obj.optString("call_setup_relay"),
callSetupRoom = if (obj.isNull("call_setup_room")) null else obj.optString("call_setup_room"),
callSetupId = if (obj.isNull("call_setup_id")) null else obj.optString("call_setup_id"),
)
} catch (e: Exception) {
SignalState()
}
}
/** Place a direct call to a target fingerprint. */
fun placeCall(targetFp: String): Int {
if (handle == 0L) return -1
return nativeSignalPlaceCall(handle, targetFp)
}
/** Answer an incoming call. mode: 0=Reject, 1=AcceptTrusted, 2=AcceptGeneric */
fun answerCall(callId: String, mode: Int = 2): Int {
if (handle == 0L) return -1
return nativeSignalAnswerCall(handle, callId, mode)
}
/** Send hangup signal. */
fun hangup() {
if (handle != 0L) nativeSignalHangup(handle)
}
/** Destroy the signal manager. */
fun destroy() {
if (handle != 0L) {
nativeSignalDestroy(handle)
handle = 0L
}
}
// JNI native methods
private external fun nativeSignalConnect(relay: String, seed: String): Long
private external fun nativeSignalGetState(handle: Long): String?
private external fun nativeSignalPlaceCall(handle: Long, targetFp: String): Int
private external fun nativeSignalAnswerCall(handle: Long, callId: String, mode: Int): Int
private external fun nativeSignalHangup(handle: Long)
private external fun nativeSignalDestroy(handle: Long)
companion object {
init { System.loadLibrary("wzp_android") }
}
}
/** Signal connection state. */
data class SignalState(
val status: String = "idle",
val fingerprint: String = "",
val incomingCallId: String? = null,
val incomingCallerFp: String? = null,
val incomingCallerAlias: String? = null,
val callSetupRelay: String? = null,
val callSetupRoom: String? = null,
val callSetupId: String? = null,
)

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package com.wzp.engine
/**
* Callback interface for VoIP engine events.
*
* All callbacks are invoked on the main/UI thread.
*/
interface WzpCallback {
/**
* Called when the call state changes.
*
* @param state one of [CallStateConstants]: IDLE(0), CONNECTING(1), ACTIVE(2),
* RECONNECTING(3), CLOSED(4)
*/
fun onCallStateChanged(state: Int)
/**
* Called when the network quality tier changes.
*
* @param tier 0 = Good, 1 = Degraded, 2 = Catastrophic
*/
fun onQualityTierChanged(tier: Int)
/**
* Called when an error occurs in the native engine.
*
* @param code numeric error code (negative)
* @param message human-readable description
*/
fun onError(code: Int, message: String)
}

232
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package com.wzp.engine
/**
* Native VoIP engine wrapper. Delegates all work to libwzp_android.so via JNI.
*
* Lifecycle:
* 1. Construct with a [WzpCallback]
* 2. Call [init] to create the native engine
* 3. Call [startCall] to begin a VoIP session
* 4. Use [setMute], [setSpeaker], [getStats], [forceProfile] during the call
* 5. Call [stopCall] to end the session
* 6. Call [destroy] when the engine is no longer needed
*
* Thread safety: all methods must be called from the same thread (typically main).
*/
class WzpEngine(private val callback: WzpCallback) {
/** Opaque pointer to the native EngineHandle. 0 means not initialised. */
private var nativeHandle: Long = 0L
/** Whether the engine has been initialised. */
val isInitialized: Boolean get() = nativeHandle != 0L
/** Create the native engine. Must be called before any other method. */
fun init() {
check(nativeHandle == 0L) { "Engine already initialized" }
nativeHandle = nativeInit()
check(nativeHandle != 0L) { "Native engine creation failed" }
}
/**
* Start a call.
*
* @param relayAddr relay server address (host:port)
* @param room room identifier (used as QUIC SNI)
* @param seedHex 64-char hex-encoded 32-byte identity seed (empty = random)
* @param token authentication token (empty = no auth)
* @param alias display name sent to relay for room participant list
* @return 0 on success, negative error code on failure
*/
/**
* @param profile 0 = Opus GOOD, 1 = Opus DEGRADED, 2 = Codec2 CATASTROPHIC
*/
fun startCall(relayAddr: String, room: String, seedHex: String = "", token: String = "", alias: String = "", profile: Int = 0): Int {
check(nativeHandle != 0L) { "Engine not initialized" }
val result = nativeStartCall(nativeHandle, relayAddr, room, seedHex, token, alias, profile)
if (result == 0) {
callback.onCallStateChanged(CallStateConstants.CONNECTING)
} else {
callback.onError(result, "Failed to start call")
}
return result
}
/** Stop the active call. Safe to call when no call is active. */
@Synchronized
fun stopCall() {
if (nativeHandle != 0L) {
nativeStopCall(nativeHandle)
callback.onCallStateChanged(CallStateConstants.CLOSED)
}
}
/** Mute or unmute the microphone. */
fun setMute(muted: Boolean) {
if (nativeHandle != 0L) nativeSetMute(nativeHandle, muted)
}
/** Enable or disable loudspeaker mode. */
fun setSpeaker(speaker: Boolean) {
if (nativeHandle != 0L) nativeSetSpeaker(nativeHandle, speaker)
}
/**
* Get current call statistics as a JSON string.
*
* @return JSON-serialised [CallStats], or `"{}"` if the engine is not initialised.
*/
@Synchronized
fun getStats(): String {
if (nativeHandle == 0L) return "{}"
return try {
nativeGetStats(nativeHandle) ?: "{}"
} catch (_: Exception) {
"{}"
}
}
/**
* Force a quality profile, overriding adaptive selection.
*
* @param profile 0 = GOOD, 1 = DEGRADED, 2 = CATASTROPHIC
*/
fun forceProfile(profile: Int) {
if (nativeHandle != 0L) nativeForceProfile(nativeHandle, profile)
}
/** Destroy the native engine and free all resources. The instance must not be reused. */
@Synchronized
fun destroy() {
if (nativeHandle != 0L) {
nativeDestroy(nativeHandle)
nativeHandle = 0L
}
}
/**
* Write captured PCM samples into the engine's capture ring buffer.
* Called from the AudioRecord capture thread.
*/
fun writeAudio(pcm: ShortArray): Int {
if (nativeHandle == 0L) return 0
return nativeWriteAudio(nativeHandle, pcm)
}
/**
* Read decoded PCM samples from the engine's playout ring buffer.
* Called from the AudioTrack playout thread.
*/
fun readAudio(pcm: ShortArray): Int {
if (nativeHandle == 0L) return 0
return nativeReadAudio(nativeHandle, pcm)
}
/**
* Write captured PCM from a DirectByteBuffer — zero JNI array copy.
* The buffer must be a direct ByteBuffer with native byte order containing i16 samples.
* Called from the AudioRecord capture thread.
*/
fun writeAudioDirect(buffer: java.nio.ByteBuffer, sampleCount: Int): Int {
if (nativeHandle == 0L) return 0
return nativeWriteAudioDirect(nativeHandle, buffer, sampleCount)
}
/**
* Read decoded PCM into a DirectByteBuffer — zero JNI array copy.
* The buffer must be a direct ByteBuffer with native byte order.
* Called from the AudioTrack playout thread.
*/
fun readAudioDirect(buffer: java.nio.ByteBuffer, maxSamples: Int): Int {
if (nativeHandle == 0L) return 0
return nativeReadAudioDirect(nativeHandle, buffer, maxSamples)
}
// -- JNI native methods --------------------------------------------------
private external fun nativeInit(): Long
private external fun nativeStartCall(
handle: Long, relay: String, room: String, seed: String, token: String, alias: String, profile: Int
): Int
private external fun nativeStopCall(handle: Long)
private external fun nativeSetMute(handle: Long, muted: Boolean)
private external fun nativeSetSpeaker(handle: Long, speaker: Boolean)
private external fun nativeGetStats(handle: Long): String?
private external fun nativeForceProfile(handle: Long, profile: Int)
private external fun nativeWriteAudio(handle: Long, pcm: ShortArray): Int
private external fun nativeReadAudio(handle: Long, pcm: ShortArray): Int
private external fun nativeWriteAudioDirect(handle: Long, buffer: java.nio.ByteBuffer, sampleCount: Int): Int
private external fun nativeReadAudioDirect(handle: Long, buffer: java.nio.ByteBuffer, maxSamples: Int): Int
private external fun nativeDestroy(handle: Long)
companion object {
init { System.loadLibrary("wzp_android") }
/** Get the identity fingerprint for a seed hex. No engine needed. */
@JvmStatic
private external fun nativeGetFingerprint(seedHex: String): String?
/** Compute the full identity fingerprint (xxxx:xxxx:...) from a seed hex string. */
@JvmStatic
fun getFingerprint(seedHex: String): String = nativeGetFingerprint(seedHex) ?: ""
}
private external fun nativePingRelay(handle: Long, relay: String): String?
private external fun nativeStartSignaling(handle: Long, relay: String, seed: String, token: String, alias: String): Int
private external fun nativePlaceCall(handle: Long, targetFp: String): Int
private external fun nativeAnswerCall(handle: Long, callId: String, mode: Int): Int
/**
* Ping a relay server. Requires engine to be initialized.
* Returns JSON `{"rtt_ms":N,"server_fingerprint":"hex"}` or null.
*/
fun pingRelay(address: String): String? {
if (nativeHandle == 0L) return null
return nativePingRelay(nativeHandle, address)
}
/**
* Start persistent signaling connection for direct 1:1 calls.
* The engine registers on the relay and listens for incoming calls.
* Call state updates are available via [getStats].
*
* @return 0 on success, -1 on error
*/
fun startSignaling(relay: String, seed: String = "", token: String = "", alias: String = ""): Int {
check(nativeHandle != 0L) { "Engine not initialized" }
return nativeStartSignaling(nativeHandle, relay, seed, token, alias)
}
/**
* Place a direct call to a peer by fingerprint.
* Requires [startSignaling] to have been called first.
*
* @return 0 on success, -1 on error
*/
fun placeCall(targetFingerprint: String): Int {
check(nativeHandle != 0L) { "Engine not initialized" }
return nativePlaceCall(nativeHandle, targetFingerprint)
}
/**
* Answer an incoming direct call.
*
* @param callId The call ID from the incoming call (available in stats.incoming_call_id)
* @param mode 0=Reject, 1=AcceptTrusted (P2P in Phase 2), 2=AcceptGeneric (relay-mediated)
* @return 0 on success, -1 on error
*/
fun answerCall(callId: String, mode: Int = 2): Int {
check(nativeHandle != 0L) { "Engine not initialized" }
return nativeAnswerCall(nativeHandle, callId, mode)
}
}
/** Integer constants matching the Rust [CallState] enum ordinals. */
object CallStateConstants {
const val IDLE = 0
const val CONNECTING = 1
const val ACTIVE = 2
const val RECONNECTING = 3
const val CLOSED = 4
}

12
android/app/src/main/java/com/wzp/net/RelayPinger.kt Normal file
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package com.wzp.net
// Relay pinging is now done via WzpEngine.pingRelay() (instance method).
// This file kept for the data class only.
object RelayPinger {
data class PingResult(
val rttMs: Int,
val reachable: Boolean,
val serverFingerprint: String = "",
)
}

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android/app/src/main/java/com/wzp/service/CallService.kt Normal file
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package com.wzp.service
import android.app.Notification
import android.app.PendingIntent
import android.app.Service
import android.content.Context
import android.content.Intent
import android.media.AudioManager
import android.net.wifi.WifiManager
import android.os.IBinder
import android.os.PowerManager
import androidx.core.app.NotificationCompat
import com.wzp.WzpApplication
import com.wzp.ui.call.CallActivity
/**
* Foreground service that keeps the VoIP call alive when the app is backgrounded.
*
* Responsibilities:
* - Shows a persistent notification during the call
* - Acquires a partial wake lock so the CPU stays on
* - Acquires a Wi-Fi lock to prevent Wi-Fi from going to sleep
* - Sets [AudioManager] mode to [AudioManager.MODE_IN_COMMUNICATION]
* - Releases all resources when the call ends
*/
class CallService : Service() {
private var wakeLock: PowerManager.WakeLock? = null
private var wifiLock: WifiManager.WifiLock? = null
private var previousAudioMode: Int = AudioManager.MODE_NORMAL
// -- Lifecycle ------------------------------------------------------------
override fun onCreate() {
super.onCreate()
acquireWakeLock()
acquireWifiLock()
setAudioMode()
}
override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
when (intent?.action) {
ACTION_STOP -> {
onStopFromNotification?.invoke()
stopSelf()
return START_NOT_STICKY
}
}
startForeground(NOTIFICATION_ID, buildNotification())
return START_STICKY
}
override fun onDestroy() {
restoreAudioMode()
releaseWifiLock()
releaseWakeLock()
super.onDestroy()
}
override fun onBind(intent: Intent?): IBinder? = null
// -- Notification ---------------------------------------------------------
private fun buildNotification(): Notification {
// Tapping the notification returns to the call screen
val contentIntent = PendingIntent.getActivity(
this,
0,
Intent(this, CallActivity::class.java).apply {
flags = Intent.FLAG_ACTIVITY_SINGLE_TOP
},
PendingIntent.FLAG_IMMUTABLE or PendingIntent.FLAG_UPDATE_CURRENT
)
// "End call" action button
val stopIntent = PendingIntent.getService(
this,
1,
Intent(this, CallService::class.java).apply { action = ACTION_STOP },
PendingIntent.FLAG_IMMUTABLE or PendingIntent.FLAG_UPDATE_CURRENT
)
return NotificationCompat.Builder(this, WzpApplication.CHANNEL_ID)
.setContentTitle("WZ Phone")
.setContentText("Call in progress")
.setSmallIcon(android.R.drawable.ic_menu_call)
.setOngoing(true)
.setContentIntent(contentIntent)
.addAction(android.R.drawable.ic_menu_close_clear_cancel, "End Call", stopIntent)
.setCategory(NotificationCompat.CATEGORY_CALL)
.setPriority(NotificationCompat.PRIORITY_LOW)
.build()
}
// -- Wake lock ------------------------------------------------------------
private fun acquireWakeLock() {
val pm = getSystemService(Context.POWER_SERVICE) as PowerManager
wakeLock = pm.newWakeLock(
PowerManager.PARTIAL_WAKE_LOCK,
"wzp:call_wake_lock"
).apply {
acquire(MAX_CALL_DURATION_MS)
}
}
private fun releaseWakeLock() {
wakeLock?.let {
if (it.isHeld) it.release()
}
wakeLock = null
}
// -- Wi-Fi lock -----------------------------------------------------------
@Suppress("DEPRECATION")
private fun acquireWifiLock() {
val wm = applicationContext.getSystemService(Context.WIFI_SERVICE) as WifiManager
wifiLock = wm.createWifiLock(
WifiManager.WIFI_MODE_FULL_HIGH_PERF,
"wzp:call_wifi_lock"
).apply {
acquire()
}
}
private fun releaseWifiLock() {
wifiLock?.let {
if (it.isHeld) it.release()
}
wifiLock = null
}
// -- Audio mode -----------------------------------------------------------
private fun setAudioMode() {
val am = getSystemService(Context.AUDIO_SERVICE) as AudioManager
previousAudioMode = am.mode
am.mode = AudioManager.MODE_IN_COMMUNICATION
}
private fun restoreAudioMode() {
val am = getSystemService(Context.AUDIO_SERVICE) as AudioManager
am.mode = previousAudioMode
}
// -- Static helpers -------------------------------------------------------
companion object {
private const val NOTIFICATION_ID = 1001
private const val ACTION_STOP = "com.wzp.service.STOP"
private const val MAX_CALL_DURATION_MS = 4L * 60 * 60 * 1000 // 4 hours
/** Called when the user taps "End Call" in the notification. */
var onStopFromNotification: (() -> Unit)? = null
/** Start the foreground call service. */
fun start(context: Context) {
val intent = Intent(context, CallService::class.java)
context.startForegroundService(intent)
}
/** Stop the foreground call service. */
fun stop(context: Context) {
val intent = Intent(context, CallService::class.java).apply {
action = ACTION_STOP
}
context.startService(intent)
}
}
}

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android/app/src/main/java/com/wzp/ui/call/CallActivity.kt Normal file
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package com.wzp.ui.call
import android.Manifest
import android.content.Intent
import android.content.pm.PackageManager
import android.os.Bundle
import android.util.Log
import android.widget.Toast
import androidx.activity.ComponentActivity
import androidx.activity.compose.setContent
import androidx.activity.result.contract.ActivityResultContracts
import androidx.activity.viewModels
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.darkColorScheme
import androidx.compose.material3.dynamicDarkColorScheme
import androidx.compose.material3.dynamicLightColorScheme
import androidx.compose.material3.lightColorScheme
import androidx.compose.foundation.isSystemInDarkTheme
import androidx.compose.runtime.Composable
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.setValue
import androidx.compose.ui.platform.LocalContext
import androidx.core.content.ContextCompat
import androidx.core.content.FileProvider
import androidx.lifecycle.Lifecycle
import androidx.lifecycle.lifecycleScope
import androidx.lifecycle.repeatOnLifecycle
import com.wzp.ui.settings.SettingsScreen
import kotlinx.coroutines.launch
/**
* Main activity hosting the in-call Compose UI.
*
* Call lifecycle (wake lock, Wi-Fi lock, audio mode, notification)
* is managed by [com.wzp.service.CallService] foreground service.
*/
class CallActivity : ComponentActivity() {
companion object {
private const val TAG = "CallActivity"
}
private val viewModel: CallViewModel by viewModels()
private val audioPermissionLauncher = registerForActivityResult(
ActivityResultContracts.RequestPermission()
) { granted ->
if (!granted) {
Toast.makeText(this, "Microphone permission is required for calls", Toast.LENGTH_LONG).show()
}
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
viewModel.setContext(this)
setContent {
WzpTheme {
var showSettings by remember { mutableStateOf(false) }
if (showSettings) {
SettingsScreen(
viewModel = viewModel,
onBack = { showSettings = false }
)
} else {
InCallScreen(
viewModel = viewModel,
onHangUp = { viewModel.stopCall() },
onOpenSettings = { showSettings = true }
)
}
}
}
if (ContextCompat.checkSelfPermission(this, Manifest.permission.RECORD_AUDIO)
!= PackageManager.PERMISSION_GRANTED
) {
audioPermissionLauncher.launch(Manifest.permission.RECORD_AUDIO)
}
// Watch for debug zip ready → launch email intent
lifecycleScope.launch {
repeatOnLifecycle(Lifecycle.State.STARTED) {
viewModel.debugZipReady.collect { zipFile ->
if (zipFile != null && zipFile.exists()) {
Log.i(TAG, "debug zip ready: ${zipFile.absolutePath} (${zipFile.length()} bytes)")
launchEmailIntent(zipFile)
viewModel.onDebugReportSent()
}
}
}
}
}
private fun launchEmailIntent(zipFile: java.io.File) {
try {
val authority = "${applicationContext.packageName}.fileprovider"
Log.i(TAG, "FileProvider authority: $authority, file: ${zipFile.absolutePath}")
val uri = FileProvider.getUriForFile(this, authority, zipFile)
Log.i(TAG, "FileProvider URI: $uri")
val intent = Intent(Intent.ACTION_SEND).apply {
type = "message/rfc822"
putExtra(Intent.EXTRA_EMAIL, arrayOf("manwefarm@gmail.com"))
putExtra(Intent.EXTRA_SUBJECT, "WZ Phone Debug Report - ${zipFile.name}")
putExtra(
Intent.EXTRA_TEXT,
"Debug report attached.\n\nContains: call recordings (WAV), RMS histograms (CSV), logcat, stats."
)
putExtra(Intent.EXTRA_STREAM, uri)
addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
}
startActivity(Intent.createChooser(intent, "Send debug report"))
Log.i(TAG, "email intent launched")
} catch (e: Exception) {
Log.e(TAG, "email intent failed", e)
Toast.makeText(this, "Failed to launch email: ${e.message}", Toast.LENGTH_LONG).show()
}
}
override fun onDestroy() {
super.onDestroy()
if (isFinishing) {
viewModel.stopCall()
}
}
}
@Composable
fun WzpTheme(content: @Composable () -> Unit) {
val darkTheme = isSystemInDarkTheme()
val context = LocalContext.current
val colorScheme = when {
android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.S -> {
if (darkTheme) dynamicDarkColorScheme(context) else dynamicLightColorScheme(context)
}
darkTheme -> darkColorScheme()
else -> lightColorScheme()
}
MaterialTheme(
colorScheme = colorScheme,
content = content
)
}

764
android/app/src/main/java/com/wzp/ui/call/CallViewModel.kt Normal file
View File

@@ -0,0 +1,764 @@
package com.wzp.ui.call
import android.content.Context
import android.util.Log
import androidx.lifecycle.ViewModel
import androidx.lifecycle.viewModelScope
import com.wzp.audio.AudioPipeline
import com.wzp.audio.AudioRouteManager
import com.wzp.data.SettingsRepository
import com.wzp.debug.DebugReporter
import com.wzp.engine.CallStats
import com.wzp.service.CallService
import com.wzp.engine.WzpCallback
import com.wzp.engine.WzpEngine
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.Job
import kotlinx.coroutines.delay
import kotlinx.coroutines.flow.MutableStateFlow
import kotlinx.coroutines.flow.StateFlow
import kotlinx.coroutines.flow.asStateFlow
import kotlinx.coroutines.isActive
import kotlinx.coroutines.launch
import kotlinx.coroutines.withContext
import org.json.JSONObject
import java.io.File
import java.net.Inet4Address
import java.net.Inet6Address
import java.net.InetAddress
data class ServerEntry(val address: String, val label: String)
data class PingResult(
val rttMs: Int,
val serverFingerprint: String = "",
val reachable: Boolean = rttMs > 0,
)
enum class LockStatus { UNKNOWN, OFFLINE, NEW, VERIFIED, CHANGED }
class CallViewModel : ViewModel(), WzpCallback {
private var engine: WzpEngine? = null
private var engineInitialized = false
private var audioPipeline: AudioPipeline? = null
private var audioRouteManager: AudioRouteManager? = null
private var audioStarted = false
private var appContext: Context? = null
private var settings: SettingsRepository? = null
private var debugReporter: DebugReporter? = null
private var lastStatsJson: String = "{}"
private var lastCallDuration: Double = 0.0
private var lastCallServer: String = ""
private val _callState = MutableStateFlow(0)
val callState: StateFlow<Int> get() = _callState.asStateFlow()
private val _isMuted = MutableStateFlow(false)
val isMuted: StateFlow<Boolean> = _isMuted.asStateFlow()
private val _isSpeaker = MutableStateFlow(false)
val isSpeaker: StateFlow<Boolean> = _isSpeaker.asStateFlow()
private val _stats = MutableStateFlow(CallStats())
val stats: StateFlow<CallStats> = _stats.asStateFlow()
private val _qualityTier = MutableStateFlow(0)
val qualityTier: StateFlow<Int> = _qualityTier.asStateFlow()
private val _errorMessage = MutableStateFlow<String?>(null)
val errorMessage: StateFlow<String?> = _errorMessage.asStateFlow()
private val _roomName = MutableStateFlow(DEFAULT_ROOM)
val roomName: StateFlow<String> = _roomName.asStateFlow()
private val _selectedServer = MutableStateFlow(0)
val selectedServer: StateFlow<Int> = _selectedServer.asStateFlow()
private val _servers = MutableStateFlow(DEFAULT_SERVERS.toList())
val servers: StateFlow<List<ServerEntry>> = _servers.asStateFlow()
private val _preferIPv6 = MutableStateFlow(false)
val preferIPv6: StateFlow<Boolean> = _preferIPv6.asStateFlow()
private val _recentRooms = MutableStateFlow<List<com.wzp.data.SettingsRepository.RecentRoom>>(emptyList())
val recentRooms: StateFlow<List<com.wzp.data.SettingsRepository.RecentRoom>> = _recentRooms.asStateFlow()
/** Ping results keyed by server address. */
private val _pingResults = MutableStateFlow<Map<String, PingResult>>(emptyMap())
val pingResults: StateFlow<Map<String, PingResult>> = _pingResults.asStateFlow()
/** Known server fingerprints (TOFU). */
private val _knownFingerprints = MutableStateFlow<Map<String, String>>(emptyMap())
private val _playoutGainDb = MutableStateFlow(0f)
val playoutGainDb: StateFlow<Float> = _playoutGainDb.asStateFlow()
private val _captureGainDb = MutableStateFlow(0f)
val captureGainDb: StateFlow<Float> = _captureGainDb.asStateFlow()
private val _alias = MutableStateFlow("")
val alias: StateFlow<String> = _alias.asStateFlow()
private val _seedHex = MutableStateFlow("")
val seedHex: StateFlow<String> = _seedHex.asStateFlow()
private val _aecEnabled = MutableStateFlow(true)
val aecEnabled: StateFlow<Boolean> = _aecEnabled.asStateFlow()
private val _debugRecording = MutableStateFlow(false)
val debugRecording: StateFlow<Boolean> = _debugRecording.asStateFlow()
// Quality profile index (matches JNI bridge profile_from_int)
private val _codecChoice = MutableStateFlow(0)
val codecChoice: StateFlow<Int> = _codecChoice.asStateFlow()
/** Key-change warning dialog state. */
data class KeyWarningInfo(val address: String, val oldFp: String, val newFp: String)
private val _keyWarning = MutableStateFlow<KeyWarningInfo?>(null)
val keyWarning: StateFlow<KeyWarningInfo?> = _keyWarning.asStateFlow()
/** True when a call just ended and debug report can be sent. */
private val _debugReportAvailable = MutableStateFlow(false)
val debugReportAvailable: StateFlow<Boolean> = _debugReportAvailable.asStateFlow()
/** Status: null=idle, "Preparing..."=in progress, "ready"=zip ready, "Error:..."=failed */
private val _debugReportStatus = MutableStateFlow<String?>(null)
val debugReportStatus: StateFlow<String?> = _debugReportStatus.asStateFlow()
/** The zip file ready to be emailed. Set by sendDebugReport, consumed by Activity. */
private val _debugZipReady = MutableStateFlow<File?>(null)
val debugZipReady: StateFlow<File?> = _debugZipReady.asStateFlow()
private var statsJob: Job? = null
// ── Direct calling state ──
/** 0=room mode, 1=direct call mode */
private val _callMode = MutableStateFlow(0)
val callMode: StateFlow<Int> = _callMode.asStateFlow()
/** Target fingerprint for direct call */
private val _targetFingerprint = MutableStateFlow("")
val targetFingerprint: StateFlow<String> = _targetFingerprint.asStateFlow()
/** Signal state string: "idle", "registered", "ringing", "incoming", "setup" */
private val _signalState = MutableStateFlow("idle")
val signalState: StateFlow<String> = _signalState.asStateFlow()
/** Incoming call info */
private val _incomingCallId = MutableStateFlow<String?>(null)
val incomingCallId: StateFlow<String?> = _incomingCallId.asStateFlow()
private val _incomingCallerFp = MutableStateFlow<String?>(null)
val incomingCallerFp: StateFlow<String?> = _incomingCallerFp.asStateFlow()
private val _incomingCallerAlias = MutableStateFlow<String?>(null)
val incomingCallerAlias: StateFlow<String?> = _incomingCallerAlias.asStateFlow()
/** Separate signal manager (persistent, survives calls) */
private var signalManager: com.wzp.engine.SignalManager? = null
private var signalPollJob: Job? = null
fun setCallMode(mode: Int) { _callMode.value = mode }
fun setTargetFingerprint(fp: String) { _targetFingerprint.value = fp }
/** Register on relay for direct calls */
fun registerForCalls() {
val serverIdx = _selectedServer.value
val serverList = _servers.value
if (serverIdx >= serverList.size) return
val relay = serverList[serverIdx].address
var seed = _seedHex.value
// Generate seed if empty (fresh install or cleared storage)
if (seed.isEmpty()) {
val newSeed = ByteArray(32).also { java.security.SecureRandom().nextBytes(it) }
seed = newSeed.joinToString("") { "%02x".format(it) }
_seedHex.value = seed
settings?.saveSeedHex(seed)
Log.i(TAG, "generated new identity seed")
}
val resolvedRelay = resolveToIp(relay) ?: relay
// nativeSignalConnect has JNI overhead — must be on a thread with enough stack.
// Dispatchers.IO threads overflow. Use explicit Java Thread.
Thread(null, {
try {
val mgr = com.wzp.engine.SignalManager()
val ok = mgr.connect(resolvedRelay, seed)
viewModelScope.launch {
if (ok) {
signalManager = mgr
startSignalPolling()
} else {
_errorMessage.value = "Failed to register on relay"
}
}
} catch (e: Exception) {
viewModelScope.launch {
_errorMessage.value = "Register error: ${e.message}"
}
}
}, "wzp-signal-init", 8 * 1024 * 1024).start()
}
/** Poll signal manager state every 500ms */
private fun startSignalPolling() {
signalPollJob?.cancel()
signalPollJob = viewModelScope.launch {
while (isActive) {
val mgr = signalManager
if (mgr != null && mgr.isConnected) {
val state = mgr.getState()
_signalState.value = state.status
_incomingCallId.value = state.incomingCallId
_incomingCallerFp.value = state.incomingCallerFp
_incomingCallerAlias.value = state.incomingCallerAlias
// Auto-connect to media room when call is set up
if (state.status == "setup" && state.callSetupRelay != null && state.callSetupRoom != null) {
Log.i(TAG, "CallSetup: connecting to ${state.callSetupRelay} room ${state.callSetupRoom}")
startCallInternal(state.callSetupRelay, state.callSetupRoom)
}
}
delay(500L)
}
}
}
private fun stopSignalPolling() {
signalPollJob?.cancel()
signalPollJob = null
}
/** Place a direct call to the target fingerprint */
fun placeDirectCall() {
val target = _targetFingerprint.value.trim()
if (target.isEmpty()) {
_errorMessage.value = "Enter a fingerprint to call"
return
}
signalManager?.placeCall(target)
}
/** Answer an incoming direct call */
fun answerIncomingCall(mode: Int = 2) {
val callId = _incomingCallId.value ?: return
signalManager?.answerCall(callId, mode)
}
/** Reject an incoming direct call */
fun rejectIncomingCall() {
val callId = _incomingCallId.value ?: return
signalManager?.answerCall(callId, 0)
}
/** Hang up direct call — media ends, signal stays alive */
fun hangupDirectCall() {
signalManager?.hangup()
engine?.stopCall()
engine?.destroy()
engine = null
engineInitialized = false
}
companion object {
private const val TAG = "WzpCall"
val DEFAULT_SERVERS = listOf(
ServerEntry("172.16.81.175:4433", "LAN (172.16.81.175)"),
ServerEntry("193.180.213.68:4433", "Pangolin (IP)"),
)
const val DEFAULT_ROOM = "general"
}
fun setContext(context: Context) {
val appCtx = context.applicationContext
appContext = appCtx
if (audioPipeline == null) {
audioPipeline = AudioPipeline(appCtx)
}
if (audioRouteManager == null) {
audioRouteManager = AudioRouteManager(appCtx)
}
if (debugReporter == null) {
debugReporter = DebugReporter(appCtx)
}
if (settings == null) {
settings = SettingsRepository(appCtx)
loadSettings()
}
}
private fun loadSettings() {
val s = settings ?: return
s.loadServers()?.let { saved ->
if (saved.isNotEmpty()) _servers.value = saved
}
_selectedServer.value = s.loadSelectedServer().coerceIn(0, _servers.value.lastIndex)
_roomName.value = s.loadRoom()
_alias.value = s.getOrCreateAlias()
_preferIPv6.value = s.loadPreferIPv6()
_playoutGainDb.value = s.loadPlayoutGain()
_captureGainDb.value = s.loadCaptureGain()
_seedHex.value = s.getOrCreateSeedHex()
_aecEnabled.value = s.loadAecEnabled()
_debugRecording.value = s.loadDebugRecording()
_codecChoice.value = s.loadCodecChoice()
_recentRooms.value = s.loadRecentRooms()
}
fun selectServer(index: Int) {
if (index in _servers.value.indices) {
_selectedServer.value = index
settings?.saveSelectedServer(index)
}
}
fun setPreferIPv6(prefer: Boolean) {
_preferIPv6.value = prefer
settings?.savePreferIPv6(prefer)
}
fun addServer(hostPort: String, label: String) {
val current = _servers.value.toMutableList()
current.add(ServerEntry(hostPort, label))
_servers.value = current
settings?.saveServers(current)
}
fun removeServer(index: Int) {
if (index < DEFAULT_SERVERS.size) return // don't remove built-in servers
val current = _servers.value.toMutableList()
if (index in current.indices) {
current.removeAt(index)
_servers.value = current
if (_selectedServer.value >= current.size) {
_selectedServer.value = 0
}
settings?.saveServers(current)
settings?.saveSelectedServer(_selectedServer.value)
}
}
/** Batch-apply servers and selection from Settings draft state. */
fun applyServers(servers: List<ServerEntry>, selected: Int) {
_servers.value = servers
_selectedServer.value = selected.coerceIn(0, servers.lastIndex)
settings?.saveServers(servers)
settings?.saveSelectedServer(_selectedServer.value)
}
/**
* Ping all servers via native QUIC. Requires engine to be initialized.
* Creates engine if needed, pings, keeps engine alive for subsequent Connect.
*/
fun pingAllServers() {
viewModelScope.launch {
// Ensure engine exists
if (engine == null || engine?.isInitialized != true) {
try {
engine = WzpEngine(this@CallViewModel).also { it.init() }
engineInitialized = true
} catch (e: Exception) {
Log.w(TAG, "engine init for ping failed: $e")
return@launch
}
}
val eng = engine ?: return@launch
val results = mutableMapOf<String, PingResult>()
val known = mutableMapOf<String, String>()
_servers.value.forEach { server ->
val json = withContext(Dispatchers.IO) {
eng.pingRelay(server.address)
}
if (json != null) {
try {
val obj = JSONObject(json)
val rtt = obj.getInt("rtt_ms")
val fp = obj.optString("server_fingerprint", "")
results[server.address] = PingResult(rttMs = rtt, serverFingerprint = fp)
// TOFU
if (fp.isNotEmpty()) {
val saved = settings?.loadServerFingerprint(server.address)
if (saved == null) settings?.saveServerFingerprint(server.address, fp)
known[server.address] = saved ?: fp
}
} catch (_: Exception) {}
}
}
_pingResults.value = results
_knownFingerprints.value = known
}
}
/** Load saved TOFU fingerprints. */
fun loadSavedFingerprints() {
val known = mutableMapOf<String, String>()
_servers.value.forEach { server ->
settings?.loadServerFingerprint(server.address)?.let {
known[server.address] = it
}
}
_knownFingerprints.value = known
}
/** Get lock status for a server. */
fun lockStatus(address: String): LockStatus {
val pr = _pingResults.value[address] ?: return LockStatus.UNKNOWN
if (!pr.reachable) return LockStatus.OFFLINE
val known = _knownFingerprints.value[address] ?: return LockStatus.NEW
if (pr.serverFingerprint.isEmpty()) return LockStatus.NEW
return if (pr.serverFingerprint == known) LockStatus.VERIFIED else LockStatus.CHANGED
}
fun setRoomName(name: String) {
_roomName.value = name
settings?.saveRoom(name)
}
fun setPlayoutGainDb(db: Float) {
_playoutGainDb.value = db
audioPipeline?.playoutGainDb = db
settings?.savePlayoutGain(db)
}
fun setCaptureGainDb(db: Float) {
_captureGainDb.value = db
audioPipeline?.captureGainDb = db
settings?.saveCaptureGain(db)
}
fun setAlias(alias: String) {
_alias.value = alias
settings?.saveAlias(alias)
}
fun restoreSeed(hex: String) {
_seedHex.value = hex
settings?.saveSeedHex(hex)
}
fun setAecEnabled(enabled: Boolean) {
_aecEnabled.value = enabled
settings?.saveAecEnabled(enabled)
}
fun setDebugRecording(enabled: Boolean) {
_debugRecording.value = enabled
settings?.saveDebugRecording(enabled)
}
fun setCodecChoice(choice: Int) {
_codecChoice.value = choice
settings?.saveCodecChoice(choice)
}
/**
* Resolve DNS hostname to IP address on the Kotlin/Android side,
* since Rust's DNS resolution may not work on Android.
* Returns "ip:port" string.
*/
private fun resolveToIp(hostPort: String): String {
val parts = hostPort.split(":")
if (parts.size != 2) return hostPort
val host = parts[0]
val port = parts[1]
// Already an IP address — return as-is
if (host.matches(Regex("""\d+\.\d+\.\d+\.\d+"""))) return hostPort
if (host.contains(":")) return hostPort // IPv6 literal
return try {
val addresses = InetAddress.getAllByName(host)
val preferV6 = _preferIPv6.value
val picked = if (preferV6) {
addresses.firstOrNull { it is Inet6Address } ?: addresses.firstOrNull { it is Inet4Address }
} else {
addresses.firstOrNull { it is Inet4Address } ?: addresses.firstOrNull { it is Inet6Address }
}
if (picked != null) {
val ip = picked.hostAddress ?: host
val formatted = if (picked is Inet6Address) "[$ip]:$port" else "$ip:$port"
formatted
} else {
hostPort
}
} catch (_: Exception) {
hostPort // resolution failed — pass through and let Rust try
}
}
/** Tear down engine and audio. Pass stopService=true to also stop the foreground service. */
private fun teardown(stopService: Boolean = true) {
Log.i(TAG, "teardown: stopping audio, stopService=$stopService")
val hadCall = audioStarted
CallService.onStopFromNotification = null
stopAudio() // sets running=false (non-blocking)
stopStatsPolling()
// Wait for audio threads to exit their loops before destroying the engine.
// This guarantees no in-flight JNI calls to writeAudio/readAudio.
val drained = audioPipeline?.awaitDrain() ?: true
if (!drained) {
Log.w(TAG, "teardown: audio threads did not drain in time")
}
audioPipeline = null
Log.i(TAG, "teardown: stopping engine")
try { engine?.stopCall() } catch (e: Exception) { Log.w(TAG, "stopCall err: $e") }
try { engine?.destroy() } catch (e: Exception) { Log.w(TAG, "destroy err: $e") }
engine = null
engineInitialized = false
_callState.value = 0
if (hadCall) {
_debugReportAvailable.value = true
}
if (stopService) {
try { appContext?.let { CallService.stop(it) } } catch (_: Exception) {}
}
Log.i(TAG, "teardown: done")
}
/** Accept the new server key and proceed with the call. */
fun acceptNewFingerprint() {
val info = _keyWarning.value ?: return
_knownFingerprints.value = _knownFingerprints.value.toMutableMap().also {
it[info.address] = info.newFp
}
settings?.saveServerFingerprint(info.address, info.newFp)
_keyWarning.value = null
startCallInternal()
}
fun dismissKeyWarning() {
_keyWarning.value = null
}
fun startCall() {
val serverEntry = _servers.value[_selectedServer.value]
// Check for key change before connecting
val ls = lockStatus(serverEntry.address)
if (ls == LockStatus.CHANGED) {
val known = _knownFingerprints.value[serverEntry.address] ?: ""
val current = _pingResults.value[serverEntry.address]?.serverFingerprint ?: ""
_keyWarning.value = KeyWarningInfo(serverEntry.address, known, current)
return
}
startCallInternal()
}
/** Start a call to a specific relay + room (used by direct call setup). */
private fun startCallInternal(relay: String, room: String) {
Log.i(TAG, "startCallDirect: relay=$relay room=$room")
try {
// Don't teardown — keep the signal connection alive
engine = WzpEngine(this)
engine!!.init()
engineInitialized = true
_callState.value = 1
_errorMessage.value = null
try { appContext?.let { CallService.start(it) } } catch (e: Exception) {
Log.w(TAG, "service start err: $e")
}
startStatsPolling()
viewModelScope.launch(kotlinx.coroutines.Dispatchers.IO) {
try {
val seed = _seedHex.value
val name = _alias.value
val result = engine?.startCall(relay, room, seedHex = seed, alias = name, profile = _codecChoice.value) ?: -1
CallService.onStopFromNotification = { stopCall() }
if (result != 0) {
_callState.value = 0
_errorMessage.value = "Failed to connect to call room (code $result)"
appContext?.let { CallService.stop(it) }
}
} catch (e: Exception) {
Log.e(TAG, "startCallDirect error", e)
_callState.value = 0
_errorMessage.value = "Engine error: ${e.message}"
appContext?.let { CallService.stop(it) }
}
}
} catch (e: Exception) {
Log.e(TAG, "startCallDirect error", e)
_callState.value = 0
_errorMessage.value = "Engine error: ${e.message}"
}
}
private fun startCallInternal() {
val serverEntry = _servers.value[_selectedServer.value]
val room = _roomName.value
Log.i(TAG, "startCall: server=${serverEntry.address} room=$room")
_debugReportAvailable.value = false
_debugReportStatus.value = null
lastCallServer = serverEntry.address
settings?.addRecentRoom(serverEntry.address, room)
_recentRooms.value = settings?.loadRecentRooms() ?: emptyList()
debugReporter?.prepareForCall()
try {
// Teardown previous call but don't stop the service (we're about to restart it)
teardown(stopService = false)
Log.i(TAG, "startCall: creating engine")
engine = WzpEngine(this)
engine!!.init()
engineInitialized = true
_callState.value = 1
_errorMessage.value = null
try { appContext?.let { CallService.start(it) } } catch (e: Exception) {
Log.w(TAG, "service start err: $e")
}
startStatsPolling()
viewModelScope.launch(kotlinx.coroutines.Dispatchers.IO) {
try {
val relay = resolveToIp(serverEntry.address)
val seed = _seedHex.value
val name = _alias.value
Log.i(TAG, "startCall: resolved=$relay, alias=$name, calling engine.startCall")
val result = engine?.startCall(relay, room, seedHex = seed, alias = name, profile = _codecChoice.value) ?: -1
Log.i(TAG, "startCall: engine returned $result")
// Only wire up notification callback after engine is running
CallService.onStopFromNotification = { stopCall() }
if (result != 0) {
_callState.value = 0
_errorMessage.value = "Failed to start call (code $result)"
appContext?.let { CallService.stop(it) }
}
} catch (e: Exception) {
Log.e(TAG, "startCall IO error", e)
_callState.value = 0
_errorMessage.value = "Engine error: ${e.message}"
appContext?.let { CallService.stop(it) }
}
}
} catch (e: Exception) {
Log.e(TAG, "startCall error", e)
_callState.value = 0
_errorMessage.value = "Engine error: ${e.message}"
appContext?.let { CallService.stop(it) }
}
}
fun stopCall() {
Log.i(TAG, "stopCall")
teardown()
}
fun toggleMute() {
val newMuted = !_isMuted.value
_isMuted.value = newMuted
try { engine?.setMute(newMuted) } catch (_: Exception) {}
}
fun toggleSpeaker() {
val newSpeaker = !_isSpeaker.value
_isSpeaker.value = newSpeaker
audioRouteManager?.setSpeaker(newSpeaker)
}
fun clearError() { _errorMessage.value = null }
fun sendDebugReport() {
val reporter = debugReporter ?: return
_debugReportStatus.value = "Preparing debug report..."
viewModelScope.launch(kotlinx.coroutines.Dispatchers.IO) {
val zipFile = reporter.collectZip(
callDurationSecs = lastCallDuration,
finalStatsJson = lastStatsJson,
aecEnabled = _aecEnabled.value,
alias = _alias.value,
server = lastCallServer,
room = _roomName.value
)
if (zipFile != null) {
_debugZipReady.value = zipFile
_debugReportStatus.value = "ready"
} else {
_debugReportStatus.value = "Error: failed to create zip"
}
_debugReportAvailable.value = false
}
}
/** Called by Activity after email intent is launched. */
fun onDebugReportSent() {
_debugZipReady.value = null
_debugReportStatus.value = null
}
fun dismissDebugReport() {
_debugReportAvailable.value = false
_debugReportStatus.value = null
_debugZipReady.value = null
}
// WzpCallback
override fun onCallStateChanged(state: Int) { _callState.value = state }
override fun onQualityTierChanged(tier: Int) { _qualityTier.value = tier }
override fun onError(code: Int, message: String) { _errorMessage.value = "Error $code: $message" }
private fun startAudio() {
if (audioStarted) return
val e = engine ?: return
val ctx = appContext ?: return
// Create a fresh pipeline each call to avoid stale threads
audioPipeline = AudioPipeline(ctx).also {
it.playoutGainDb = _playoutGainDb.value
it.captureGainDb = _captureGainDb.value
it.aecEnabled = _aecEnabled.value
it.debugRecording = _debugRecording.value
it.start(e)
}
audioRouteManager?.register()
audioStarted = true
}
private fun stopAudio() {
if (!audioStarted) return
audioPipeline?.stop() // sets running=false; DON'T null — teardown needs awaitDrain()
audioRouteManager?.unregister()
audioRouteManager?.setSpeaker(false)
_isSpeaker.value = false
audioStarted = false
}
private fun startStatsPolling() {
statsJob?.cancel()
statsJob = viewModelScope.launch {
while (isActive) {
try {
val json = engine?.getStats() ?: "{}"
if (json.isNotEmpty()) {
Log.d(TAG, "raw: $json")
lastStatsJson = json
val s = CallStats.fromJson(json)
lastCallDuration = s.durationSecs
_stats.value = s
// Only update callState from media engine stats (not signal)
if (s.state != 0) {
_callState.value = s.state
}
if (s.state == 2 && !audioStarted) {
startAudio()
}
}
} catch (_: Exception) {}
delay(500L)
}
}
}
private fun stopStatsPolling() {
statsJob?.cancel()
statsJob = null
}
override fun onCleared() {
super.onCleared()
Log.i(TAG, "onCleared")
teardown()
}
}

1062
android/app/src/main/java/com/wzp/ui/call/InCallScreen.kt Normal file
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141
android/app/src/main/java/com/wzp/ui/components/Identicon.kt Normal file
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package com.wzp.ui.components
import android.widget.Toast
import androidx.compose.foundation.Canvas
import androidx.compose.foundation.clickable
import androidx.compose.foundation.layout.size
import androidx.compose.foundation.shape.RoundedCornerShape
import androidx.compose.runtime.Composable
import androidx.compose.ui.Modifier
import androidx.compose.ui.draw.clip
import androidx.compose.ui.geometry.Offset
import androidx.compose.ui.geometry.Size
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.platform.LocalClipboardManager
import androidx.compose.ui.platform.LocalContext
import androidx.compose.ui.text.AnnotatedString
import androidx.compose.ui.unit.Dp
import androidx.compose.ui.unit.dp
import kotlin.math.min
/**
* Deterministic identicon — generates a unique 5x5 symmetric pattern
* from a hex fingerprint string. Identical algorithm to the desktop
* TypeScript implementation in identicon.ts.
*/
@Composable
fun Identicon(
fingerprint: String,
size: Dp = 36.dp,
clickToCopy: Boolean = true,
modifier: Modifier = Modifier,
) {
val clipboard = LocalClipboardManager.current
val context = LocalContext.current
val bytes = hashBytes(fingerprint)
val (bg, fg) = deriveColors(bytes)
val grid = buildGrid(bytes)
Canvas(
modifier = modifier
.size(size)
.clip(RoundedCornerShape(size * 0.12f))
.then(
if (clickToCopy && fingerprint.isNotEmpty()) {
Modifier.clickable {
clipboard.setText(AnnotatedString(fingerprint))
Toast.makeText(context, "Copied", Toast.LENGTH_SHORT).show()
}
} else Modifier
)
) {
val cellW = this.size.width / 5f
val cellH = this.size.height / 5f
// Background
drawRect(color = bg, size = this.size)
// Foreground cells
for (y in 0 until 5) {
for (x in 0 until 5) {
if (grid[y][x]) {
drawRect(
color = fg,
topLeft = Offset(x * cellW, y * cellH),
size = Size(cellW, cellH),
)
}
}
}
}
}
/**
* Fingerprint text that copies to clipboard on tap.
*/
@Composable
fun CopyableFingerprint(
fingerprint: String,
modifier: Modifier = Modifier,
style: androidx.compose.ui.text.TextStyle = androidx.compose.material3.MaterialTheme.typography.bodySmall,
color: Color = Color.Unspecified,
) {
val clipboard = LocalClipboardManager.current
val context = LocalContext.current
androidx.compose.material3.Text(
text = fingerprint,
style = style,
color = color,
modifier = modifier.clickable {
if (fingerprint.isNotEmpty()) {
clipboard.setText(AnnotatedString(fingerprint))
Toast.makeText(context, "Fingerprint copied", Toast.LENGTH_SHORT).show()
}
}
)
}
// --- Internal helpers (matching desktop identicon.ts) ---
private fun hashBytes(hex: String): List<Int> {
val clean = hex.filter { it.isLetterOrDigit() }
val bytes = mutableListOf<Int>()
var i = 0
while (i + 1 < clean.length) {
val b = clean.substring(i, i + 2).toIntOrNull(16) ?: 0
bytes.add(b)
i += 2
}
// Pad to at least 16 bytes
while (bytes.size < 16) bytes.add(0)
return bytes
}
private fun deriveColors(bytes: List<Int>): Pair<Color, Color> {
val hue1 = bytes[0] * 360f / 256f
val hue2 = (bytes[1] * 360f / 256f + 120f) % 360f
val bg = hslToColor(hue1, 0.65f, 0.35f)
val fg = hslToColor(hue2, 0.70f, 0.55f)
return bg to fg
}
private fun buildGrid(bytes: List<Int>): List<List<Boolean>> {
return (0 until 5).map { y ->
val left = (0 until 3).map { x ->
val idx = 2 + y * 3 + x
bytes[idx % bytes.size] > 128
}
// Mirror: col3 = col1, col4 = col0
listOf(left[0], left[1], left[2], left[1], left[0])
}
}
private fun hslToColor(h: Float, s: Float, l: Float): Color {
val k = { n: Float -> (n + h / 30f) % 12f }
val a = s * min(l, 1f - l)
val f = { n: Float ->
l - a * maxOf(-1f, minOf(k(n) - 3f, minOf(9f - k(n), 1f)))
}
return Color(f(0f), f(8f), f(4f))
}

567
android/app/src/main/java/com/wzp/ui/settings/SettingsScreen.kt Normal file
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package com.wzp.ui.settings
import androidx.compose.foundation.clickable
import android.content.ClipData
import android.content.ClipboardManager
import android.content.Context
import android.widget.Toast
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.ExperimentalLayoutApi
import androidx.compose.foundation.layout.FlowRow
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.Spacer
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.height
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.width
import androidx.compose.foundation.rememberScrollState
import androidx.compose.foundation.shape.RoundedCornerShape
import androidx.compose.foundation.verticalScroll
import androidx.compose.material3.AlertDialog
import androidx.compose.material3.Button
import androidx.compose.material3.ButtonDefaults
import androidx.compose.material3.Divider
import androidx.compose.material3.RadioButton
import androidx.compose.material3.FilledTonalButton
import androidx.compose.material3.FilledTonalIconButton
import androidx.compose.material3.IconButtonDefaults
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.OutlinedButton
import androidx.compose.material3.OutlinedTextField
import androidx.compose.material3.Slider
import androidx.compose.material3.Surface
import androidx.compose.material3.Switch
import androidx.compose.material3.Text
import androidx.compose.material3.TextButton
import androidx.compose.runtime.Composable
import androidx.compose.runtime.collectAsState
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableFloatStateOf
import androidx.compose.runtime.mutableIntStateOf
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.setValue
import androidx.compose.runtime.toMutableStateList
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.platform.LocalContext
import androidx.compose.ui.text.font.FontFamily
import androidx.compose.ui.text.font.FontWeight
import androidx.compose.ui.unit.dp
import com.wzp.ui.call.CallViewModel
import com.wzp.ui.call.ServerEntry
@OptIn(ExperimentalLayoutApi::class)
@Composable
fun SettingsScreen(
viewModel: CallViewModel,
onBack: () -> Unit
) {
val context = LocalContext.current
// Snapshot current values into local draft state
val currentAlias by viewModel.alias.collectAsState()
val currentSeedHex by viewModel.seedHex.collectAsState()
val currentServers by viewModel.servers.collectAsState()
val currentSelectedServer by viewModel.selectedServer.collectAsState()
val currentRoomName by viewModel.roomName.collectAsState()
val currentPreferIPv6 by viewModel.preferIPv6.collectAsState()
val currentPlayoutGain by viewModel.playoutGainDb.collectAsState()
val currentCaptureGain by viewModel.captureGainDb.collectAsState()
val currentAecEnabled by viewModel.aecEnabled.collectAsState()
// Draft state — initialized from current values
var draftAlias by remember { mutableStateOf(currentAlias) }
var draftSeedHex by remember { mutableStateOf(currentSeedHex) }
val draftServers = remember { currentServers.toMutableStateList() }
var draftSelectedServer by remember { mutableIntStateOf(currentSelectedServer) }
var draftRoomName by remember { mutableStateOf(currentRoomName) }
var draftPreferIPv6 by remember { mutableStateOf(currentPreferIPv6) }
var draftPlayoutGain by remember { mutableFloatStateOf(currentPlayoutGain) }
var draftCaptureGain by remember { mutableFloatStateOf(currentCaptureGain) }
var draftAecEnabled by remember { mutableStateOf(currentAecEnabled) }
// Track if anything changed
val hasChanges = draftAlias != currentAlias ||
draftSeedHex != currentSeedHex ||
draftServers.toList() != currentServers ||
draftSelectedServer != currentSelectedServer ||
draftRoomName != currentRoomName ||
draftPreferIPv6 != currentPreferIPv6 ||
draftPlayoutGain != currentPlayoutGain ||
draftCaptureGain != currentCaptureGain ||
draftAecEnabled != currentAecEnabled
var showAddServerDialog by remember { mutableStateOf(false) }
var showRestoreKeyDialog by remember { mutableStateOf(false) }
Surface(
modifier = Modifier.fillMaxSize(),
color = MaterialTheme.colorScheme.background
) {
Column(
modifier = Modifier
.fillMaxSize()
.padding(24.dp)
.verticalScroll(rememberScrollState())
) {
// Header
Row(
modifier = Modifier.fillMaxWidth(),
verticalAlignment = Alignment.CenterVertically
) {
TextButton(onClick = onBack) {
Text("< Back")
}
Spacer(modifier = Modifier.weight(1f))
Text(
text = "Settings",
style = MaterialTheme.typography.headlineSmall.copy(
fontWeight = FontWeight.Bold
),
color = MaterialTheme.colorScheme.primary
)
Spacer(modifier = Modifier.weight(1f))
// Save button — only enabled when changes exist
Button(
onClick = {
viewModel.setAlias(draftAlias)
if (draftSeedHex != currentSeedHex) viewModel.restoreSeed(draftSeedHex)
viewModel.applyServers(draftServers.toList(), draftSelectedServer)
viewModel.setRoomName(draftRoomName)
viewModel.setPreferIPv6(draftPreferIPv6)
viewModel.setPlayoutGainDb(draftPlayoutGain)
viewModel.setCaptureGainDb(draftCaptureGain)
viewModel.setAecEnabled(draftAecEnabled)
Toast.makeText(context, "Settings saved", Toast.LENGTH_SHORT).show()
onBack()
},
enabled = hasChanges
) {
Text("Save")
}
}
Spacer(modifier = Modifier.height(24.dp))
// --- Identity ---
SectionHeader("Identity")
OutlinedTextField(
value = draftAlias,
onValueChange = { draftAlias = it },
label = { Text("Display Name") },
singleLine = true,
modifier = Modifier.fillMaxWidth()
)
Spacer(modifier = Modifier.height(16.dp))
// Fingerprint display with identicon
val fingerprint = if (draftSeedHex.length >= 16) draftSeedHex.take(16).uppercase() else "Not generated"
Text(
text = "Fingerprint",
style = MaterialTheme.typography.labelSmall,
color = MaterialTheme.colorScheme.onSurfaceVariant
)
Row(
verticalAlignment = Alignment.CenterVertically,
modifier = Modifier.padding(vertical = 4.dp)
) {
com.wzp.ui.components.Identicon(
fingerprint = draftSeedHex,
size = 40.dp,
)
Spacer(modifier = Modifier.width(12.dp))
com.wzp.ui.components.CopyableFingerprint(
fingerprint = fingerprint.chunked(4).joinToString(" "),
style = MaterialTheme.typography.bodyMedium.copy(
fontFamily = FontFamily.Monospace
),
color = MaterialTheme.colorScheme.onSurface,
)
}
Spacer(modifier = Modifier.height(12.dp))
// Key backup/restore
Row(horizontalArrangement = Arrangement.spacedBy(8.dp)) {
FilledTonalButton(onClick = {
val clipboard = context.getSystemService(Context.CLIPBOARD_SERVICE) as ClipboardManager
clipboard.setPrimaryClip(ClipData.newPlainText("WZP Key", draftSeedHex))
Toast.makeText(context, "Key copied to clipboard", Toast.LENGTH_SHORT).show()
}) {
Text("Copy Key")
}
OutlinedButton(onClick = { showRestoreKeyDialog = true }) {
Text("Restore Key")
}
}
Spacer(modifier = Modifier.height(24.dp))
Divider()
Spacer(modifier = Modifier.height(16.dp))
// --- Audio ---
SectionHeader("Audio Defaults")
GainSlider(
label = "Voice Volume",
gainDb = draftPlayoutGain,
onGainChange = { draftPlayoutGain = Math.round(it).toFloat() }
)
Spacer(modifier = Modifier.height(4.dp))
GainSlider(
label = "Mic Gain",
gainDb = draftCaptureGain,
onGainChange = { draftCaptureGain = Math.round(it).toFloat() }
)
Spacer(modifier = Modifier.height(12.dp))
Row(
verticalAlignment = Alignment.CenterVertically,
modifier = Modifier.fillMaxWidth()
) {
Column(modifier = Modifier.weight(1f)) {
Text(
text = "Echo Cancellation (AEC)",
style = MaterialTheme.typography.bodyMedium
)
Text(
text = "Disable if audio sounds distorted",
style = MaterialTheme.typography.bodySmall,
color = MaterialTheme.colorScheme.onSurfaceVariant
)
}
Switch(
checked = draftAecEnabled,
onCheckedChange = { draftAecEnabled = it }
)
}
Spacer(modifier = Modifier.height(12.dp))
// Quality selection — slider from best (studio 64k) to worst (codec2 1.2k) + auto
val qualityLabels = listOf(
"Studio 64k", "Studio 48k", "Studio 32k", "Auto",
"Opus 24k", "Opus 6k", "Codec2 3.2k", "Codec2 1.2k"
)
// Map slider position to JNI profile int:
// 0=Studio64k(6), 1=Studio48k(5), 2=Studio32k(4), 3=Auto(7),
// 4=Opus24k(0), 5=Opus6k(1), 6=Codec2_3.2k(3), 7=Codec2_1.2k(2)
val sliderToProfile = intArrayOf(6, 5, 4, 7, 0, 1, 3, 2)
val profileToSlider = mapOf(6 to 0, 5 to 1, 4 to 2, 7 to 3, 0 to 4, 1 to 5, 3 to 6, 2 to 7)
val qualityColors = listOf(
Color(0xFF22C55E), Color(0xFF4ADE80), Color(0xFF86EFAC), Color(0xFFA3E635),
Color(0xFFA3E635), Color(0xFFFACC15), Color(0xFFE97320), Color(0xFF991B1B)
)
val currentCodec by viewModel.codecChoice.collectAsState()
val sliderPos = profileToSlider[currentCodec] ?: 3
Text("Quality", style = MaterialTheme.typography.bodyMedium)
Text(
text = "Decode always accepts all codecs",
style = MaterialTheme.typography.bodySmall,
color = MaterialTheme.colorScheme.onSurfaceVariant
)
Spacer(modifier = Modifier.height(4.dp))
Text(
text = qualityLabels[sliderPos],
style = MaterialTheme.typography.titleMedium.copy(fontWeight = FontWeight.Bold),
color = qualityColors[sliderPos]
)
Slider(
value = sliderPos.toFloat(),
onValueChange = { viewModel.setCodecChoice(sliderToProfile[it.toInt()]) },
valueRange = 0f..7f,
steps = 6,
modifier = Modifier.fillMaxWidth()
)
Row(
modifier = Modifier.fillMaxWidth(),
horizontalArrangement = Arrangement.SpaceBetween
) {
Text("Best", style = MaterialTheme.typography.labelSmall, color = Color(0xFF22C55E))
Text("Lowest", style = MaterialTheme.typography.labelSmall, color = Color(0xFF991B1B))
}
Spacer(modifier = Modifier.height(24.dp))
Divider()
Spacer(modifier = Modifier.height(16.dp))
// --- Servers ---
SectionHeader("Servers")
FlowRow(
modifier = Modifier.fillMaxWidth(),
horizontalArrangement = Arrangement.Start,
verticalArrangement = Arrangement.spacedBy(4.dp)
) {
draftServers.forEachIndexed { idx, entry ->
val isSelected = draftSelectedServer == idx
Row(verticalAlignment = Alignment.CenterVertically) {
FilledTonalIconButton(
onClick = { draftSelectedServer = idx },
modifier = Modifier
.padding(end = 2.dp)
.height(36.dp)
.width(140.dp),
shape = RoundedCornerShape(8.dp),
colors = if (isSelected) {
IconButtonDefaults.filledTonalIconButtonColors(
containerColor = MaterialTheme.colorScheme.primaryContainer,
contentColor = MaterialTheme.colorScheme.onPrimaryContainer
)
} else {
IconButtonDefaults.filledTonalIconButtonColors()
}
) {
Text(
text = entry.label,
style = MaterialTheme.typography.labelSmall,
maxLines = 1
)
}
// Show remove button for non-default servers
if (idx >= 2) {
TextButton(
onClick = {
draftServers.removeAt(idx)
if (draftSelectedServer >= draftServers.size) {
draftSelectedServer = 0
}
},
modifier = Modifier.height(36.dp)
) {
Text("X", color = MaterialTheme.colorScheme.error)
}
}
}
}
}
Spacer(modifier = Modifier.height(8.dp))
OutlinedButton(
onClick = { showAddServerDialog = true },
shape = RoundedCornerShape(8.dp)
) {
Text("+ Add Server")
}
// Show selected server address
Spacer(modifier = Modifier.height(8.dp))
Text(
text = "Default: ${draftServers.getOrNull(draftSelectedServer)?.address ?: "none"}",
style = MaterialTheme.typography.bodySmall,
color = MaterialTheme.colorScheme.onSurfaceVariant
)
Spacer(modifier = Modifier.height(24.dp))
Divider()
Spacer(modifier = Modifier.height(16.dp))
// --- Network ---
SectionHeader("Network")
Row(
verticalAlignment = Alignment.CenterVertically,
modifier = Modifier.fillMaxWidth()
) {
Text(
text = "Prefer IPv6",
style = MaterialTheme.typography.bodyMedium,
modifier = Modifier.weight(1f)
)
Switch(
checked = draftPreferIPv6,
onCheckedChange = { draftPreferIPv6 = it }
)
}
Spacer(modifier = Modifier.height(24.dp))
Divider()
Spacer(modifier = Modifier.height(16.dp))
// --- Room ---
SectionHeader("Room")
OutlinedTextField(
value = draftRoomName,
onValueChange = { draftRoomName = it },
label = { Text("Default Room") },
singleLine = true,
modifier = Modifier.fillMaxWidth()
)
Spacer(modifier = Modifier.height(32.dp))
}
}
if (showAddServerDialog) {
AddServerDialog(
onDismiss = { showAddServerDialog = false },
onAdd = { host, port, label ->
draftServers.add(ServerEntry("$host:$port", label))
showAddServerDialog = false
}
)
}
if (showRestoreKeyDialog) {
RestoreKeyDialog(
onDismiss = { showRestoreKeyDialog = false },
onRestore = { hex ->
draftSeedHex = hex
showRestoreKeyDialog = false
Toast.makeText(context, "Key staged — press Save to apply", Toast.LENGTH_SHORT).show()
}
)
}
}
@Composable
private fun SectionHeader(title: String) {
Text(
text = title,
style = MaterialTheme.typography.titleMedium.copy(fontWeight = FontWeight.Bold),
color = MaterialTheme.colorScheme.primary
)
Spacer(modifier = Modifier.height(8.dp))
}
@Composable
private fun GainSlider(label: String, gainDb: Float, onGainChange: (Float) -> Unit) {
Column(
modifier = Modifier.fillMaxWidth(),
horizontalAlignment = Alignment.CenterHorizontally
) {
val sign = if (gainDb >= 0) "+" else ""
Text(
text = "$label: ${sign}${"%.0f".format(gainDb)} dB",
style = MaterialTheme.typography.labelSmall,
color = MaterialTheme.colorScheme.onSurfaceVariant
)
Slider(
value = gainDb,
onValueChange = onGainChange,
valueRange = -20f..20f,
steps = 0,
modifier = Modifier.fillMaxWidth()
)
}
}
@Composable
private fun AddServerDialog(
onDismiss: () -> Unit,
onAdd: (host: String, port: String, label: String) -> Unit
) {
var host by remember { mutableStateOf("") }
var port by remember { mutableStateOf("4433") }
var label by remember { mutableStateOf("") }
AlertDialog(
onDismissRequest = onDismiss,
title = { Text("Add Server") },
text = {
Column {
OutlinedTextField(
value = host,
onValueChange = { host = it },
label = { Text("Host (IP or domain)") },
singleLine = true,
modifier = Modifier.fillMaxWidth()
)
Spacer(modifier = Modifier.height(8.dp))
OutlinedTextField(
value = port,
onValueChange = { port = it },
label = { Text("Port") },
singleLine = true,
modifier = Modifier.fillMaxWidth()
)
Spacer(modifier = Modifier.height(8.dp))
OutlinedTextField(
value = label,
onValueChange = { label = it },
label = { Text("Label (optional)") },
singleLine = true,
modifier = Modifier.fillMaxWidth()
)
}
},
confirmButton = {
TextButton(
onClick = {
if (host.isNotBlank()) {
val displayLabel = label.ifBlank { host }
onAdd(host.trim(), port.trim(), displayLabel)
}
}
) { Text("Add") }
},
dismissButton = {
TextButton(onClick = onDismiss) { Text("Cancel") }
}
)
}
@Composable
private fun RestoreKeyDialog(
onDismiss: () -> Unit,
onRestore: (hex: String) -> Unit
) {
var keyInput by remember { mutableStateOf("") }
var error by remember { mutableStateOf<String?>(null) }
AlertDialog(
onDismissRequest = onDismiss,
title = { Text("Restore Identity Key") },
text = {
Column {
Text(
text = "Paste your 64-character hex key below. This will replace your current identity.",
style = MaterialTheme.typography.bodySmall,
color = MaterialTheme.colorScheme.onSurfaceVariant
)
Spacer(modifier = Modifier.height(8.dp))
OutlinedTextField(
value = keyInput,
onValueChange = {
keyInput = it.trim().lowercase()
error = null
},
label = { Text("Identity Key (hex)") },
singleLine = true,
modifier = Modifier.fillMaxWidth(),
isError = error != null
)
error?.let {
Text(
text = it,
style = MaterialTheme.typography.bodySmall,
color = MaterialTheme.colorScheme.error
)
}
}
},
confirmButton = {
TextButton(
onClick = {
val cleaned = keyInput.replace("\\s".toRegex(), "")
if (cleaned.length != 64 || !cleaned.all { it in '0'..'9' || it in 'a'..'f' }) {
error = "Key must be exactly 64 hex characters"
} else {
onRestore(cleaned)
}
}
) { Text("Restore") }
},
dismissButton = {
TextButton(onClick = onDismiss) { Text("Cancel") }
}
)
}

4
android/app/src/main/res/xml/file_paths.xml Normal file
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@@ -0,0 +1,4 @@
<?xml version="1.0" encoding="utf-8"?>
<paths>
<cache-path name="debug" path="." />
</paths>

4
android/build.gradle.kts Normal file
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@@ -0,0 +1,4 @@
plugins {
id("com.android.application") version "8.2.0" apply false
id("org.jetbrains.kotlin.android") version "1.9.22" apply false
}

4
android/gradle.properties Normal file
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@@ -0,0 +1,4 @@
org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
android.useAndroidX=true
kotlin.code.style=official
android.nonTransitiveRClass=true

BIN
android/gradle/wrapper/gradle-wrapper.jar vendored Normal file
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Binary file not shown.

6
android/gradle/wrapper/gradle-wrapper.properties vendored Normal file
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@@ -0,0 +1,6 @@
distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
distributionUrl=https\://services.gradle.org/distributions/gradle-8.5-bin.zip
networkTimeout=10000
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists

5
android/gradlew vendored Executable file
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@@ -0,0 +1,5 @@
#!/bin/sh
# Gradle wrapper script
APP_HOME=$(cd "$(dirname "$0")" && pwd)
CLASSPATH="$APP_HOME/gradle/wrapper/gradle-wrapper.jar"
exec java -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"

18
android/settings.gradle.kts Normal file
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@@ -0,0 +1,18 @@
pluginManagement {
repositories {
google()
mavenCentral()
gradlePluginPortal()
}
}
dependencyResolutionManagement {
repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
repositories {
google()
mavenCentral()
}
}
rootProject.name = "WZPhone"
include(":app")

34
crates/wzp-android/Cargo.toml Normal file
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[package]
name = "wzp-android"
version.workspace = true
edition.workspace = true
license.workspace = true
rust-version.workspace = true
description = "WarzonePhone Android native VoIP engine — Oboe audio, JNI bridge, call pipeline"
[lib]
crate-type = ["cdylib", "rlib"]
[dependencies]
wzp-proto = { workspace = true }
wzp-codec = { workspace = true }
wzp-fec = { workspace = true }
wzp-crypto = { workspace = true }
wzp-transport = { workspace = true }
tokio = { workspace = true }
tracing = { workspace = true }
tracing-subscriber = { workspace = true, features = ["env-filter"] }
bytes = { workspace = true }
serde = { workspace = true }
serde_json = "1"
thiserror = { workspace = true }
async-trait = { workspace = true }
anyhow = "1"
libc = "0.2"
jni = { version = "0.21", default-features = false }
rand = { workspace = true }
rustls = { version = "0.23", default-features = false, features = ["ring"] }
tracing-android = "0.2"
[build-dependencies]
cc = "1"

154
crates/wzp-android/build.rs Normal file
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use std::path::PathBuf;
fn main() {
let target = std::env::var("TARGET").unwrap_or_default();
if target.contains("android") {
// Override broken static getauxval from compiler-rt that crashes
// in shared libraries. Must be compiled first to take link priority.
cc::Build::new()
.file("cpp/getauxval_fix.c")
.compile("getauxval_fix");
let oboe_dir = fetch_oboe();
match oboe_dir {
Some(oboe_path) => {
println!("cargo:warning=Building with Oboe from {:?}", oboe_path);
let mut build = cc::Build::new();
build
.cpp(true)
.std("c++17")
// Use shared libc++ — avoids pulling in static libc stubs
// that crash in shared libraries (getauxval, pthread_create, etc.)
.cpp_link_stdlib(Some("c++_shared"))
.include("cpp")
.include(oboe_path.join("include"))
.include(oboe_path.join("src"))
.define("WZP_HAS_OBOE", None)
.file("cpp/oboe_bridge.cpp");
// Compile all Oboe source files
let src_dir = oboe_path.join("src");
add_cpp_files_recursive(&mut build, &src_dir);
build.compile("oboe_bridge");
}
None => {
println!("cargo:warning=Oboe not found, building with stub");
cc::Build::new()
.cpp(true)
.std("c++17")
.cpp_link_stdlib(Some("c++_shared"))
.file("cpp/oboe_stub.cpp")
.include("cpp")
.compile("oboe_bridge");
}
}
// Dynamic C++ runtime — libc++_shared.so must be in jniLibs alongside
// libwzp_android.so. We copy it there from the NDK sysroot.
//
// WHY NOT STATIC: libc++_static.a + libc++abi.a transitively pull in
// object files from libc.a (static libc) which contain broken stubs for
// getauxval, __init_tcb, pthread_create, etc. These stubs only work in
// statically-linked executables. In shared libraries loaded by dlopen(),
// they SIGSEGV because the static libc init hasn't run.
// Google's official recommendation: use libc++_shared.so for native libs.
if let Ok(ndk) = std::env::var("ANDROID_NDK_HOME") {
let arch = if target.contains("aarch64") {
"aarch64-linux-android"
} else if target.contains("armv7") {
"arm-linux-androideabi"
} else if target.contains("x86_64") {
"x86_64-linux-android"
} else {
"aarch64-linux-android"
};
let lib_dir = format!(
"{ndk}/toolchains/llvm/prebuilt/linux-x86_64/sysroot/usr/lib/{arch}"
);
println!("cargo:rustc-link-search=native={lib_dir}");
// Copy libc++_shared.so to the jniLibs directory
let shared_so = format!("{lib_dir}/libc++_shared.so");
if std::path::Path::new(&shared_so).exists() {
let jni_abi = if target.contains("aarch64") {
"arm64-v8a"
} else if target.contains("armv7") {
"armeabi-v7a"
} else {
"arm64-v8a"
};
// Try to copy to the Gradle jniLibs directory
let manifest = std::env::var("CARGO_MANIFEST_DIR").unwrap_or_default();
let jni_dir = format!(
"{manifest}/../../android/app/src/main/jniLibs/{jni_abi}"
);
if let Ok(_) = std::fs::create_dir_all(&jni_dir) {
let _ = std::fs::copy(&shared_so, format!("{jni_dir}/libc++_shared.so"));
println!("cargo:warning=Copied libc++_shared.so to {jni_dir}");
}
}
}
// Oboe needs liblog and libOpenSLES from Android
println!("cargo:rustc-link-lib=log");
println!("cargo:rustc-link-lib=OpenSLES");
} else {
// Non-Android: always use stub
cc::Build::new()
.cpp(true)
.std("c++17")
.file("cpp/oboe_stub.cpp")
.include("cpp")
.compile("oboe_bridge");
}
}
/// Recursively add all .cpp files from a directory to a cc::Build.
fn add_cpp_files_recursive(build: &mut cc::Build, dir: &std::path::Path) {
if !dir.is_dir() {
return;
}
for entry in std::fs::read_dir(dir).unwrap() {
let entry = entry.unwrap();
let path = entry.path();
if path.is_dir() {
add_cpp_files_recursive(build, &path);
} else if path.extension().map_or(false, |e| e == "cpp") {
build.file(&path);
}
}
}
/// Try to find or fetch Oboe headers + source.
fn fetch_oboe() -> Option<PathBuf> {
let out_dir = PathBuf::from(std::env::var("OUT_DIR").unwrap());
let oboe_dir = out_dir.join("oboe");
if oboe_dir.join("include").join("oboe").join("Oboe.h").exists() {
return Some(oboe_dir);
}
let status = std::process::Command::new("git")
.args([
"clone",
"--depth=1",
"--branch=1.8.1",
"https://github.com/google/oboe.git",
oboe_dir.to_str().unwrap(),
])
.status();
match status {
Ok(s) if s.success() => {
if oboe_dir.join("include").join("oboe").join("Oboe.h").exists() {
Some(oboe_dir)
} else {
None
}
}
_ => None,
}
}

21
crates/wzp-android/cpp/getauxval_fix.c Normal file
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// Override the broken static getauxval from compiler-rt/CRT.
// The static version reads from __libc_auxv which is NULL in shared libs
// loaded via dlopen, causing SIGSEGV in init_have_lse_atomics at load time.
// This version calls the real bionic getauxval via dlsym.
#ifdef __ANDROID__
#include <dlfcn.h>
#include <stdint.h>
typedef unsigned long (*getauxval_fn)(unsigned long);
unsigned long getauxval(unsigned long type) {
static getauxval_fn real_getauxval = (getauxval_fn)0;
if (!real_getauxval) {
real_getauxval = (getauxval_fn)dlsym((void*)-1L /* RTLD_DEFAULT */, "getauxval");
if (!real_getauxval) {
return 0;
}
}
return real_getauxval(type);
}
#endif

278
crates/wzp-android/cpp/oboe_bridge.cpp Normal file
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// Full Oboe implementation for Android
// This file is compiled only when targeting Android
#include "oboe_bridge.h"
#ifdef __ANDROID__
#include <oboe/Oboe.h>
#include <android/log.h>
#include <cstring>
#include <atomic>
#define LOG_TAG "wzp-oboe"
#define LOGI(...) __android_log_print(ANDROID_LOG_INFO, LOG_TAG, __VA_ARGS__)
#define LOGW(...) __android_log_print(ANDROID_LOG_WARN, LOG_TAG, __VA_ARGS__)
#define LOGE(...) __android_log_print(ANDROID_LOG_ERROR, LOG_TAG, __VA_ARGS__)
// ---------------------------------------------------------------------------
// Ring buffer helpers (SPSC, lock-free)
// ---------------------------------------------------------------------------
static inline int32_t ring_available_read(const wzp_atomic_int* write_idx,
const wzp_atomic_int* read_idx,
int32_t capacity) {
int32_t w = std::atomic_load_explicit(write_idx, std::memory_order_acquire);
int32_t r = std::atomic_load_explicit(read_idx, std::memory_order_relaxed);
int32_t avail = w - r;
if (avail < 0) avail += capacity;
return avail;
}
static inline int32_t ring_available_write(const wzp_atomic_int* write_idx,
const wzp_atomic_int* read_idx,
int32_t capacity) {
return capacity - 1 - ring_available_read(write_idx, read_idx, capacity);
}
static inline void ring_write(int16_t* buf, int32_t capacity,
wzp_atomic_int* write_idx, const wzp_atomic_int* read_idx,
const int16_t* src, int32_t count) {
int32_t w = std::atomic_load_explicit(write_idx, std::memory_order_relaxed);
for (int32_t i = 0; i < count; i++) {
buf[w] = src[i];
w++;
if (w >= capacity) w = 0;
}
std::atomic_store_explicit(write_idx, w, std::memory_order_release);
}
static inline void ring_read(int16_t* buf, int32_t capacity,
const wzp_atomic_int* write_idx, wzp_atomic_int* read_idx,
int16_t* dst, int32_t count) {
int32_t r = std::atomic_load_explicit(read_idx, std::memory_order_relaxed);
for (int32_t i = 0; i < count; i++) {
dst[i] = buf[r];
r++;
if (r >= capacity) r = 0;
}
std::atomic_store_explicit(read_idx, r, std::memory_order_release);
}
// ---------------------------------------------------------------------------
// Global state
// ---------------------------------------------------------------------------
static std::shared_ptr<oboe::AudioStream> g_capture_stream;
static std::shared_ptr<oboe::AudioStream> g_playout_stream;
static const WzpOboeRings* g_rings = nullptr;
static std::atomic<bool> g_running{false};
static std::atomic<float> g_capture_latency_ms{0.0f};
static std::atomic<float> g_playout_latency_ms{0.0f};
// ---------------------------------------------------------------------------
// Capture callback
// ---------------------------------------------------------------------------
class CaptureCallback : public oboe::AudioStreamDataCallback {
public:
oboe::DataCallbackResult onAudioReady(
oboe::AudioStream* stream,
void* audioData,
int32_t numFrames) override {
if (!g_running.load(std::memory_order_relaxed) || !g_rings) {
return oboe::DataCallbackResult::Stop;
}
const int16_t* src = static_cast<const int16_t*>(audioData);
int32_t avail = ring_available_write(g_rings->capture_write_idx,
g_rings->capture_read_idx,
g_rings->capture_capacity);
int32_t to_write = (numFrames < avail) ? numFrames : avail;
if (to_write > 0) {
ring_write(g_rings->capture_buf, g_rings->capture_capacity,
g_rings->capture_write_idx, g_rings->capture_read_idx,
src, to_write);
}
// Update latency estimate
auto result = stream->calculateLatencyMillis();
if (result) {
g_capture_latency_ms.store(static_cast<float>(result.value()),
std::memory_order_relaxed);
}
return oboe::DataCallbackResult::Continue;
}
};
// ---------------------------------------------------------------------------
// Playout callback
// ---------------------------------------------------------------------------
class PlayoutCallback : public oboe::AudioStreamDataCallback {
public:
oboe::DataCallbackResult onAudioReady(
oboe::AudioStream* stream,
void* audioData,
int32_t numFrames) override {
if (!g_running.load(std::memory_order_relaxed) || !g_rings) {
memset(audioData, 0, numFrames * sizeof(int16_t));
return oboe::DataCallbackResult::Stop;
}
int16_t* dst = static_cast<int16_t*>(audioData);
int32_t avail = ring_available_read(g_rings->playout_write_idx,
g_rings->playout_read_idx,
g_rings->playout_capacity);
int32_t to_read = (numFrames < avail) ? numFrames : avail;
if (to_read > 0) {
ring_read(g_rings->playout_buf, g_rings->playout_capacity,
g_rings->playout_write_idx, g_rings->playout_read_idx,
dst, to_read);
}
// Fill remainder with silence on underrun
if (to_read < numFrames) {
memset(dst + to_read, 0, (numFrames - to_read) * sizeof(int16_t));
}
// Update latency estimate
auto result = stream->calculateLatencyMillis();
if (result) {
g_playout_latency_ms.store(static_cast<float>(result.value()),
std::memory_order_relaxed);
}
return oboe::DataCallbackResult::Continue;
}
};
static CaptureCallback g_capture_cb;
static PlayoutCallback g_playout_cb;
// ---------------------------------------------------------------------------
// Public C API
// ---------------------------------------------------------------------------
int wzp_oboe_start(const WzpOboeConfig* config, const WzpOboeRings* rings) {
if (g_running.load(std::memory_order_relaxed)) {
LOGW("wzp_oboe_start: already running");
return -1;
}
g_rings = rings;
// Build capture stream
oboe::AudioStreamBuilder captureBuilder;
captureBuilder.setDirection(oboe::Direction::Input)
->setPerformanceMode(oboe::PerformanceMode::LowLatency)
->setSharingMode(oboe::SharingMode::Exclusive)
->setFormat(oboe::AudioFormat::I16)
->setChannelCount(config->channel_count)
->setSampleRate(config->sample_rate)
->setFramesPerDataCallback(config->frames_per_burst)
->setInputPreset(oboe::InputPreset::VoiceCommunication)
->setDataCallback(&g_capture_cb);
oboe::Result result = captureBuilder.openStream(g_capture_stream);
if (result != oboe::Result::OK) {
LOGE("Failed to open capture stream: %s", oboe::convertToText(result));
return -2;
}
// Build playout stream
oboe::AudioStreamBuilder playoutBuilder;
playoutBuilder.setDirection(oboe::Direction::Output)
->setPerformanceMode(oboe::PerformanceMode::LowLatency)
->setSharingMode(oboe::SharingMode::Exclusive)
->setFormat(oboe::AudioFormat::I16)
->setChannelCount(config->channel_count)
->setSampleRate(config->sample_rate)
->setFramesPerDataCallback(config->frames_per_burst)
->setUsage(oboe::Usage::VoiceCommunication)
->setDataCallback(&g_playout_cb);
result = playoutBuilder.openStream(g_playout_stream);
if (result != oboe::Result::OK) {
LOGE("Failed to open playout stream: %s", oboe::convertToText(result));
g_capture_stream->close();
g_capture_stream.reset();
return -3;
}
g_running.store(true, std::memory_order_release);
// Start both streams
result = g_capture_stream->requestStart();
if (result != oboe::Result::OK) {
LOGE("Failed to start capture: %s", oboe::convertToText(result));
g_running.store(false, std::memory_order_release);
g_capture_stream->close();
g_playout_stream->close();
g_capture_stream.reset();
g_playout_stream.reset();
return -4;
}
result = g_playout_stream->requestStart();
if (result != oboe::Result::OK) {
LOGE("Failed to start playout: %s", oboe::convertToText(result));
g_running.store(false, std::memory_order_release);
g_capture_stream->requestStop();
g_capture_stream->close();
g_playout_stream->close();
g_capture_stream.reset();
g_playout_stream.reset();
return -5;
}
LOGI("Oboe started: sr=%d burst=%d ch=%d",
config->sample_rate, config->frames_per_burst, config->channel_count);
return 0;
}
void wzp_oboe_stop(void) {
g_running.store(false, std::memory_order_release);
if (g_capture_stream) {
g_capture_stream->requestStop();
g_capture_stream->close();
g_capture_stream.reset();
}
if (g_playout_stream) {
g_playout_stream->requestStop();
g_playout_stream->close();
g_playout_stream.reset();
}
g_rings = nullptr;
LOGI("Oboe stopped");
}
float wzp_oboe_capture_latency_ms(void) {
return g_capture_latency_ms.load(std::memory_order_relaxed);
}
float wzp_oboe_playout_latency_ms(void) {
return g_playout_latency_ms.load(std::memory_order_relaxed);
}
int wzp_oboe_is_running(void) {
return g_running.load(std::memory_order_relaxed) ? 1 : 0;
}
#else
// Non-Android fallback — should not be reached; oboe_stub.cpp is used instead.
// Provide empty implementations just in case.
int wzp_oboe_start(const WzpOboeConfig* config, const WzpOboeRings* rings) {
(void)config; (void)rings;
return -99;
}
void wzp_oboe_stop(void) {}
float wzp_oboe_capture_latency_ms(void) { return 0.0f; }
float wzp_oboe_playout_latency_ms(void) { return 0.0f; }
int wzp_oboe_is_running(void) { return 0; }
#endif // __ANDROID__

43
crates/wzp-android/cpp/oboe_bridge.h Normal file
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#ifndef WZP_OBOE_BRIDGE_H
#define WZP_OBOE_BRIDGE_H
#include <stdint.h>
#ifdef __cplusplus
#include <atomic>
typedef std::atomic<int32_t> wzp_atomic_int;
extern "C" {
#else
#include <stdatomic.h>
typedef atomic_int wzp_atomic_int;
#endif
typedef struct {
int32_t sample_rate;
int32_t frames_per_burst;
int32_t channel_count;
} WzpOboeConfig;
typedef struct {
int16_t* capture_buf;
int32_t capture_capacity;
wzp_atomic_int* capture_write_idx;
wzp_atomic_int* capture_read_idx;
int16_t* playout_buf;
int32_t playout_capacity;
wzp_atomic_int* playout_write_idx;
wzp_atomic_int* playout_read_idx;
} WzpOboeRings;
int wzp_oboe_start(const WzpOboeConfig* config, const WzpOboeRings* rings);
void wzp_oboe_stop(void);
float wzp_oboe_capture_latency_ms(void);
float wzp_oboe_playout_latency_ms(void);
int wzp_oboe_is_running(void);
#ifdef __cplusplus
}
#endif
#endif // WZP_OBOE_BRIDGE_H

27
crates/wzp-android/cpp/oboe_stub.cpp Normal file
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@@ -0,0 +1,27 @@
// Stub implementation for non-Android host builds (testing, cargo check, etc.)
#include "oboe_bridge.h"
#include <stdio.h>
int wzp_oboe_start(const WzpOboeConfig* config, const WzpOboeRings* rings) {
(void)config;
(void)rings;
fprintf(stderr, "wzp_oboe_start: stub (not on Android)\n");
return 0;
}
void wzp_oboe_stop(void) {
fprintf(stderr, "wzp_oboe_stop: stub (not on Android)\n");
}
float wzp_oboe_capture_latency_ms(void) {
return 0.0f;
}
float wzp_oboe_playout_latency_ms(void) {
return 0.0f;
}
int wzp_oboe_is_running(void) {
return 0;
}

424
crates/wzp-android/src/audio_android.rs Normal file
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@@ -0,0 +1,424 @@
//! Lock-free SPSC ring buffer audio backend for Android (Oboe).
//!
//! The ring buffers are shared between Rust and C++: the Oboe callbacks
//! (running on a high-priority audio thread) read/write directly into
//! the buffers via atomic indices, while the Rust codec thread on the
//! other side does the same.
use std::sync::atomic::{AtomicI32, Ordering};
use tracing::info;
#[allow(unused_imports)]
use tracing::warn;
/// Number of samples per 20 ms frame at 48 kHz mono.
pub const FRAME_SAMPLES: usize = 960;
/// Default ring buffer capacity: 8 frames = 160 ms at 48 kHz.
const RING_CAPACITY: usize = 7680;
// ---------------------------------------------------------------------------
// FFI declarations matching oboe_bridge.h
// ---------------------------------------------------------------------------
#[repr(C)]
#[allow(non_snake_case)]
struct WzpOboeConfig {
sample_rate: i32,
frames_per_burst: i32,
channel_count: i32,
}
#[repr(C)]
#[allow(non_snake_case)]
struct WzpOboeRings {
capture_buf: *mut i16,
capture_capacity: i32,
capture_write_idx: *mut AtomicI32,
capture_read_idx: *mut AtomicI32,
playout_buf: *mut i16,
playout_capacity: i32,
playout_write_idx: *mut AtomicI32,
playout_read_idx: *mut AtomicI32,
}
unsafe impl Send for WzpOboeRings {}
unsafe impl Sync for WzpOboeRings {}
unsafe extern "C" {
fn wzp_oboe_start(config: *const WzpOboeConfig, rings: *const WzpOboeRings) -> i32;
fn wzp_oboe_stop();
fn wzp_oboe_capture_latency_ms() -> f32;
fn wzp_oboe_playout_latency_ms() -> f32;
fn wzp_oboe_is_running() -> i32;
}
// ---------------------------------------------------------------------------
// SPSC Ring Buffer
// ---------------------------------------------------------------------------
/// Single-producer single-consumer lock-free ring buffer.
///
/// The producer calls `write()` and the consumer calls `read()`.
/// Atomics use acquire/release ordering to ensure correct visibility
/// across the Oboe audio thread and the Rust codec thread.
pub struct RingBuffer {
buf: Vec<i16>,
capacity: usize,
write_idx: AtomicI32,
read_idx: AtomicI32,
}
impl RingBuffer {
/// Create a new ring buffer with the given capacity (in samples).
///
/// The actual usable capacity is `capacity - 1` to distinguish
/// full from empty.
pub fn new(capacity: usize) -> Self {
Self {
buf: vec![0i16; capacity],
capacity,
write_idx: AtomicI32::new(0),
read_idx: AtomicI32::new(0),
}
}
/// Number of samples available to read.
pub fn available_read(&self) -> usize {
let w = self.write_idx.load(Ordering::Acquire);
let r = self.read_idx.load(Ordering::Relaxed);
let avail = w - r;
if avail < 0 {
(avail + self.capacity as i32) as usize
} else {
avail as usize
}
}
/// Number of samples that can be written before the buffer is full.
pub fn available_write(&self) -> usize {
self.capacity - 1 - self.available_read()
}
/// Write samples into the ring buffer (producer side).
///
/// Returns the number of samples actually written (may be less than
/// `data.len()` if the buffer is nearly full).
pub fn write(&self, data: &[i16]) -> usize {
let avail = self.available_write();
let count = data.len().min(avail);
if count == 0 {
return 0;
}
let mut w = self.write_idx.load(Ordering::Relaxed) as usize;
let cap = self.capacity;
let buf_ptr = self.buf.as_ptr() as *mut i16;
for i in 0..count {
// SAFETY: w is always in [0, capacity) and we are the sole producer.
unsafe {
*buf_ptr.add(w) = data[i];
}
w += 1;
if w >= cap {
w = 0;
}
}
self.write_idx.store(w as i32, Ordering::Release);
count
}
/// Read samples from the ring buffer (consumer side).
///
/// Returns the number of samples actually read (may be less than
/// `out.len()` if the buffer doesn't have enough data).
pub fn read(&self, out: &mut [i16]) -> usize {
let avail = self.available_read();
let count = out.len().min(avail);
if count == 0 {
return 0;
}
let mut r = self.read_idx.load(Ordering::Relaxed) as usize;
let cap = self.capacity;
let buf_ptr = self.buf.as_ptr();
for i in 0..count {
// SAFETY: r is always in [0, capacity) and we are the sole consumer.
unsafe {
out[i] = *buf_ptr.add(r);
}
r += 1;
if r >= cap {
r = 0;
}
}
self.read_idx.store(r as i32, Ordering::Release);
count
}
/// Get a raw pointer to the buffer data (for FFI).
fn buf_ptr(&self) -> *mut i16 {
self.buf.as_ptr() as *mut i16
}
/// Get a raw pointer to the write index atomic (for FFI).
fn write_idx_ptr(&self) -> *mut AtomicI32 {
&self.write_idx as *const AtomicI32 as *mut AtomicI32
}
/// Get a raw pointer to the read index atomic (for FFI).
fn read_idx_ptr(&self) -> *mut AtomicI32 {
&self.read_idx as *const AtomicI32 as *mut AtomicI32
}
}
// SAFETY: The ring buffer is designed for SPSC use where producer and consumer
// are on different threads. The atomic indices provide the synchronization.
unsafe impl Send for RingBuffer {}
unsafe impl Sync for RingBuffer {}
// ---------------------------------------------------------------------------
// Oboe Backend
// ---------------------------------------------------------------------------
/// Oboe-based audio backend for Android.
///
/// Owns two SPSC ring buffers (capture and playout) that are shared with
/// the C++ Oboe callbacks via raw pointers. The Oboe callbacks run on
/// high-priority audio threads managed by the Android audio system.
pub struct OboeBackend {
capture_ring: RingBuffer,
playout_ring: RingBuffer,
started: bool,
}
impl OboeBackend {
/// Create a new backend with default ring buffer sizes (160 ms each).
pub fn new() -> Self {
Self {
capture_ring: RingBuffer::new(RING_CAPACITY),
playout_ring: RingBuffer::new(RING_CAPACITY),
started: false,
}
}
/// Start Oboe audio streams.
///
/// This sets up the ring buffer pointers and calls into the C++ layer
/// to open and start the capture and playout Oboe streams.
pub fn start(&mut self) -> Result<(), anyhow::Error> {
if self.started {
return Ok(());
}
let config = WzpOboeConfig {
sample_rate: 48_000,
frames_per_burst: FRAME_SAMPLES as i32,
channel_count: 1,
};
let rings = WzpOboeRings {
capture_buf: self.capture_ring.buf_ptr(),
capture_capacity: self.capture_ring.capacity as i32,
capture_write_idx: self.capture_ring.write_idx_ptr(),
capture_read_idx: self.capture_ring.read_idx_ptr(),
playout_buf: self.playout_ring.buf_ptr(),
playout_capacity: self.playout_ring.capacity as i32,
playout_write_idx: self.playout_ring.write_idx_ptr(),
playout_read_idx: self.playout_ring.read_idx_ptr(),
};
let ret = unsafe { wzp_oboe_start(&config, &rings) };
if ret != 0 {
return Err(anyhow::anyhow!("wzp_oboe_start failed with code {}", ret));
}
self.started = true;
info!("Oboe backend started");
Ok(())
}
/// Stop Oboe audio streams.
pub fn stop(&mut self) {
if !self.started {
return;
}
unsafe { wzp_oboe_stop() };
self.started = false;
info!("Oboe backend stopped");
}
/// Read captured audio samples from the capture ring buffer.
///
/// Returns the number of samples actually read. The caller should
/// provide a buffer of at least `FRAME_SAMPLES` (960) samples.
pub fn read_capture(&self, out: &mut [i16]) -> usize {
self.capture_ring.read(out)
}
/// Write audio samples to the playout ring buffer.
///
/// Returns the number of samples actually written.
pub fn write_playout(&self, samples: &[i16]) -> usize {
self.playout_ring.write(samples)
}
/// Get the current capture latency in milliseconds (from Oboe).
#[allow(unused)]
pub fn capture_latency_ms(&self) -> f32 {
unsafe { wzp_oboe_capture_latency_ms() }
}
/// Get the current playout latency in milliseconds (from Oboe).
#[allow(unused)]
pub fn playout_latency_ms(&self) -> f32 {
unsafe { wzp_oboe_playout_latency_ms() }
}
/// Check if the Oboe streams are currently running.
#[allow(unused)]
pub fn is_running(&self) -> bool {
unsafe { wzp_oboe_is_running() != 0 }
}
}
impl Drop for OboeBackend {
fn drop(&mut self) {
self.stop();
}
}
// ---------------------------------------------------------------------------
// Thread affinity / priority helpers
// ---------------------------------------------------------------------------
/// Pin the current thread to the highest-numbered CPU cores (big cores on
/// ARM big.LITTLE architectures). Falls back silently on failure.
#[allow(unused)]
pub fn pin_to_big_core() {
#[cfg(target_os = "android")]
{
unsafe {
let num_cpus = libc::sysconf(libc::_SC_NPROCESSORS_ONLN);
if num_cpus <= 0 {
warn!("pin_to_big_core: could not determine CPU count");
return;
}
let num_cpus = num_cpus as usize;
// Target the upper half of CPUs (big cores on most big.LITTLE SoCs)
let start = num_cpus / 2;
let mut set: libc::cpu_set_t = std::mem::zeroed();
libc::CPU_ZERO(&mut set);
for cpu in start..num_cpus {
libc::CPU_SET(cpu, &mut set);
}
let ret = libc::sched_setaffinity(
0, // current thread
std::mem::size_of::<libc::cpu_set_t>(),
&set,
);
if ret != 0 {
warn!("sched_setaffinity failed: {}", std::io::Error::last_os_error());
} else {
info!(start, num_cpus, "pinned to big cores");
}
}
}
#[cfg(not(target_os = "android"))]
{
// No-op on non-Android
}
}
/// Attempt to set SCHED_FIFO real-time priority for the current thread.
/// Falls back silently on failure (requires appropriate permissions on Android).
#[allow(unused)]
pub fn set_realtime_priority() {
#[cfg(target_os = "android")]
{
unsafe {
let param = libc::sched_param {
sched_priority: 2, // Low RT priority — enough for audio, safe
};
let ret = libc::sched_setscheduler(0, libc::SCHED_FIFO, &param);
if ret != 0 {
warn!(
"sched_setscheduler(SCHED_FIFO) failed: {}",
std::io::Error::last_os_error()
);
} else {
info!("set SCHED_FIFO priority 2");
}
}
}
#[cfg(not(target_os = "android"))]
{
// No-op on non-Android
}
}
// ---------------------------------------------------------------------------
// Tests
// ---------------------------------------------------------------------------
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn ring_buffer_write_read() {
let ring = RingBuffer::new(16);
let data = [1i16, 2, 3, 4, 5];
assert_eq!(ring.write(&data), 5);
assert_eq!(ring.available_read(), 5);
let mut out = [0i16; 5];
assert_eq!(ring.read(&mut out), 5);
assert_eq!(out, [1, 2, 3, 4, 5]);
assert_eq!(ring.available_read(), 0);
}
#[test]
fn ring_buffer_wraparound() {
let ring = RingBuffer::new(8);
let data = [10i16, 20, 30, 40, 50, 60]; // 6 samples, capacity 8 (usable 7)
assert_eq!(ring.write(&data), 6);
let mut out = [0i16; 4];
assert_eq!(ring.read(&mut out), 4);
assert_eq!(out, [10, 20, 30, 40]);
// Now write more, which should wrap around
let data2 = [70i16, 80, 90, 100];
assert_eq!(ring.write(&data2), 4);
let mut out2 = [0i16; 6];
assert_eq!(ring.read(&mut out2), 6);
assert_eq!(out2, [50, 60, 70, 80, 90, 100]);
}
#[test]
fn ring_buffer_full() {
let ring = RingBuffer::new(4); // usable capacity = 3
let data = [1i16, 2, 3, 4, 5];
assert_eq!(ring.write(&data), 3); // Only 3 fit
assert_eq!(ring.available_write(), 0);
}
#[test]
fn oboe_backend_stub_start_stop() {
let mut backend = OboeBackend::new();
backend.start().expect("stub start should succeed");
assert!(backend.started);
backend.stop();
assert!(!backend.started);
}
}

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//! Lock-free SPSC ring buffer — "Reader-Detects-Lap" architecture.
//!
//! SPSC invariant: the producer ONLY writes `write_pos`, the consumer
//! ONLY writes `read_pos`. Neither thread touches the other's cursor.
//!
//! On overflow (writer laps the reader), the writer simply overwrites
//! old buffer data. The reader detects the lap via `available() >
//! RING_CAPACITY` and snaps its own `read_pos` forward.
//!
//! Capacity is a power of 2 for bitmask indexing (no modulo).
use std::sync::atomic::{AtomicU64, AtomicUsize, Ordering};
/// Ring buffer capacity — power of 2 for bitmask indexing.
/// 16384 samples = 341.3ms at 48kHz mono. 70% more headroom
/// than the previous 9600 (200ms) for surviving Android GC pauses.
const RING_CAPACITY: usize = 16384; // 2^14
const RING_MASK: usize = RING_CAPACITY - 1;
/// Lock-free single-producer single-consumer ring buffer for i16 PCM samples.
pub struct AudioRing {
buf: Box<[i16]>,
/// Monotonically increasing write cursor. ONLY written by producer.
write_pos: AtomicUsize,
/// Monotonically increasing read cursor. ONLY written by consumer.
read_pos: AtomicUsize,
/// Incremented by reader when it detects it was lapped (overflow).
overflow_count: AtomicU64,
/// Incremented by reader when ring is empty (underrun).
underrun_count: AtomicU64,
}
// SAFETY: AudioRing is SPSC — one thread writes (producer), one reads (consumer).
// The producer only writes write_pos. The consumer only writes read_pos.
// Neither thread writes the other's cursor. Buffer indices are derived from
// the owning thread's cursor, ensuring no concurrent access to the same index.
unsafe impl Send for AudioRing {}
unsafe impl Sync for AudioRing {}
impl AudioRing {
pub fn new() -> Self {
debug_assert!(RING_CAPACITY.is_power_of_two());
Self {
buf: vec![0i16; RING_CAPACITY].into_boxed_slice(),
write_pos: AtomicUsize::new(0),
read_pos: AtomicUsize::new(0),
overflow_count: AtomicU64::new(0),
underrun_count: AtomicU64::new(0),
}
}
/// Number of samples available to read (clamped to capacity).
pub fn available(&self) -> usize {
let w = self.write_pos.load(Ordering::Acquire);
let r = self.read_pos.load(Ordering::Relaxed);
w.wrapping_sub(r).min(RING_CAPACITY)
}
/// Number of samples that can be written without overwriting unread data.
pub fn free_space(&self) -> usize {
RING_CAPACITY.saturating_sub(self.available())
}
/// Write samples into the ring. Returns number of samples written.
///
/// If the ring is full, old data is silently overwritten. The reader
/// will detect the lap and self-correct. The writer NEVER touches
/// `read_pos` — this is the key invariant that prevents cursor desync.
pub fn write(&self, samples: &[i16]) -> usize {
let count = samples.len().min(RING_CAPACITY);
let w = self.write_pos.load(Ordering::Relaxed);
for i in 0..count {
unsafe {
let ptr = self.buf.as_ptr() as *mut i16;
*ptr.add((w + i) & RING_MASK) = samples[i];
}
}
self.write_pos.store(w.wrapping_add(count), Ordering::Release);
count
}
/// Read samples from the ring into `out`. Returns number of samples read.
///
/// If the writer has lapped the reader (overflow), `read_pos` is snapped
/// forward to the oldest valid data. This is safe because only the
/// reader thread writes `read_pos`.
pub fn read(&self, out: &mut [i16]) -> usize {
let w = self.write_pos.load(Ordering::Acquire);
let mut r = self.read_pos.load(Ordering::Relaxed);
let mut avail = w.wrapping_sub(r);
// Lap detection: writer has overwritten our unread data.
// Snap read_pos forward to oldest valid data in the buffer.
if avail > RING_CAPACITY {
r = w.wrapping_sub(RING_CAPACITY);
avail = RING_CAPACITY;
self.overflow_count.fetch_add(1, Ordering::Relaxed);
}
let count = out.len().min(avail);
if count == 0 {
if w == r {
self.underrun_count.fetch_add(1, Ordering::Relaxed);
}
return 0;
}
for i in 0..count {
out[i] = unsafe { *self.buf.as_ptr().add((r + i) & RING_MASK) };
}
self.read_pos.store(r.wrapping_add(count), Ordering::Release);
count
}
/// Number of overflow events (reader was lapped by writer).
pub fn overflow_count(&self) -> u64 {
self.overflow_count.load(Ordering::Relaxed)
}
/// Number of underrun events (reader found empty buffer).
pub fn underrun_count(&self) -> u64 {
self.underrun_count.load(Ordering::Relaxed)
}
}

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//! Engine commands sent from the JNI/UI thread to the engine.
use wzp_proto::QualityProfile;
/// Commands that can be sent to the running engine.
pub enum EngineCommand {
/// Mute or unmute the microphone.
SetMute(bool),
/// Enable or disable speaker (loudspeaker) mode.
SetSpeaker(bool),
/// Force a specific quality profile (overrides adaptive logic).
ForceProfile(QualityProfile),
/// Stop the call and shut down the engine.
Stop,
/// Place a direct call to a fingerprint (requires signal connection).
PlaceCall { target_fingerprint: String },
/// Answer an incoming direct call.
AnswerCall {
call_id: String,
accept_mode: wzp_proto::CallAcceptMode,
},
/// Reject an incoming direct call.
RejectCall { call_id: String },
}

1069
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crates/wzp-android/src/jni_bridge.rs Normal file
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//! JNI bridge for Android — thin layer between Kotlin and the WzpEngine.
use std::panic;
use std::sync::Once;
use jni::objects::{JClass, JObject, JString};
use jni::sys::{jboolean, jint, jlong, jstring};
use jni::JNIEnv;
use tracing::{error, info};
use wzp_proto::QualityProfile;
use crate::engine::{CallStartConfig, WzpEngine};
/// Opaque engine handle passed to/from Kotlin as a `jlong`.
struct EngineHandle {
engine: WzpEngine,
}
/// Recover the `EngineHandle` from a raw handle value.
unsafe fn handle_ref(handle: jlong) -> &'static mut EngineHandle {
unsafe { &mut *(handle as *mut EngineHandle) }
}
/// 7 = auto (use relay's chosen profile)
const PROFILE_AUTO: jint = 7;
fn profile_from_int(value: jint) -> QualityProfile {
match value {
0 => QualityProfile::GOOD, // Opus 24k
1 => QualityProfile::DEGRADED, // Opus 6k
2 => QualityProfile::CATASTROPHIC, // Codec2 1.2k
3 => QualityProfile { // Codec2 3.2k
codec: wzp_proto::CodecId::Codec2_3200,
fec_ratio: 0.5,
frame_duration_ms: 20,
frames_per_block: 5,
},
4 => QualityProfile::STUDIO_32K, // Opus 32k
5 => QualityProfile::STUDIO_48K, // Opus 48k
6 => QualityProfile::STUDIO_64K, // Opus 64k
_ => QualityProfile::GOOD, // auto falls back to GOOD
}
}
static INIT_LOGGING: Once = Once::new();
/// Initialize tracing → Android logcat (tag "wzp_android").
/// Safe to call multiple times — only the first call takes effect.
fn init_logging() {
INIT_LOGGING.call_once(|| {
// Wrap in catch_unwind — sharded_slab allocation inside
// tracing_subscriber::registry() can crash on some Android
// devices if scudo malloc fails during early initialization.
let _ = std::panic::catch_unwind(|| {
use tracing_subscriber::layer::SubscriberExt;
use tracing_subscriber::util::SubscriberInitExt;
use tracing_subscriber::EnvFilter;
if let Ok(layer) = tracing_android::layer("wzp_android") {
// Filter: INFO for our crates, WARN for everything else.
// The jni crate emits VERBOSE logs for every method lookup
// (~10 lines per JNI call, 100+ calls/sec) which floods logcat
// and causes the system to kill the app.
let filter = EnvFilter::new("warn,wzp_android=info,wzp_proto=info,wzp_transport=info,wzp_codec=info,wzp_fec=info,wzp_crypto=info");
let _ = tracing_subscriber::registry()
.with(layer)
.with(filter)
.try_init();
}
});
});
}
#[unsafe(no_mangle)]
pub unsafe extern "system" fn Java_com_wzp_engine_WzpEngine_nativeInit(
_env: JNIEnv,
_class: JClass,
) -> jlong {
let result = panic::catch_unwind(|| {
init_logging();
// Install rustls crypto provider ONCE on the main thread.
// Must not be called per-thread — conflicts with Android's system libcrypto.so TLS keys.
let _ = rustls::crypto::ring::default_provider().install_default();
let handle = Box::new(EngineHandle {
engine: WzpEngine::new(),
});
Box::into_raw(handle) as jlong
});
match result {
Ok(h) => h,
Err(_) => 0,
}
}
#[unsafe(no_mangle)]
pub unsafe extern "system" fn Java_com_wzp_engine_WzpEngine_nativeStartCall(
mut env: JNIEnv,
_class: JClass,
handle: jlong,
relay_addr_j: JString,
room_j: JString,
seed_hex_j: JString,
token_j: JString,
alias_j: JString,
profile_j: jint,
) -> jint {
let result = panic::catch_unwind(panic::AssertUnwindSafe(|| {
let relay_addr: String = env.get_string(&relay_addr_j).map(|s| s.into()).unwrap_or_default();
let room: String = env.get_string(&room_j).map(|s| s.into()).unwrap_or_default();
let seed_hex: String = env.get_string(&seed_hex_j).map(|s| s.into()).unwrap_or_default();
let token: String = env.get_string(&token_j).map(|s| s.into()).unwrap_or_default();
let alias: String = env.get_string(&alias_j).map(|s| s.into()).unwrap_or_default();
let h = unsafe { handle_ref(handle) };
// Parse hex seed
let mut identity_seed = [0u8; 32];
if seed_hex.len() == 64 {
for i in 0..32 {
if let Ok(byte) = u8::from_str_radix(&seed_hex[i * 2..i * 2 + 2], 16) {
identity_seed[i] = byte;
}
}
} else {
// Generate random seed if not provided
use rand::RngCore;
rand::thread_rng().fill_bytes(&mut identity_seed);
}
let config = CallStartConfig {
profile: profile_from_int(profile_j),
auto_profile: profile_j == PROFILE_AUTO,
relay_addr,
room,
auth_token: if token.is_empty() { Vec::new() } else { token.into_bytes() },
identity_seed,
alias: if alias.is_empty() { None } else { Some(alias) },
};
match h.engine.start_call(config) {
Ok(()) => 0,
Err(e) => {
error!("start_call failed: {e}");
-1
}
}
}));
match result {
Ok(code) => code,
Err(_) => -1,
}
}
#[unsafe(no_mangle)]
pub unsafe extern "system" fn Java_com_wzp_engine_WzpEngine_nativeStopCall(
_env: JNIEnv,
_class: JClass,
handle: jlong,
) {
let _ = panic::catch_unwind(panic::AssertUnwindSafe(|| {
let h = unsafe { handle_ref(handle) };
h.engine.stop_call();
}));
}
#[unsafe(no_mangle)]
pub unsafe extern "system" fn Java_com_wzp_engine_WzpEngine_nativeSetMute(
_env: JNIEnv,
_class: JClass,
handle: jlong,
muted: jboolean,
) {
let _ = panic::catch_unwind(panic::AssertUnwindSafe(|| {
let h = unsafe { handle_ref(handle) };
h.engine.set_mute(muted != 0);
}));
}
#[unsafe(no_mangle)]
pub unsafe extern "system" fn Java_com_wzp_engine_WzpEngine_nativeSetSpeaker(
_env: JNIEnv,
_class: JClass,
handle: jlong,
speaker: jboolean,
) {
let _ = panic::catch_unwind(panic::AssertUnwindSafe(|| {
let h = unsafe { handle_ref(handle) };
h.engine.set_speaker(speaker != 0);
}));
}
#[unsafe(no_mangle)]
pub unsafe extern "system" fn Java_com_wzp_engine_WzpEngine_nativeGetStats<'a>(
mut env: JNIEnv<'a>,
_class: JClass,
handle: jlong,
) -> jstring {
let result = panic::catch_unwind(panic::AssertUnwindSafe(|| {
let h = unsafe { handle_ref(handle) };
let stats = h.engine.get_stats();
serde_json::to_string(&stats).unwrap_or_else(|_| "{}".to_string())
}));
let json = match result {
Ok(s) => s,
Err(_) => "{}".to_string(),
};
env.new_string(&json)
.map(|s| s.into_raw())
.unwrap_or(JObject::null().into_raw())
}
#[unsafe(no_mangle)]
pub unsafe extern "system" fn Java_com_wzp_engine_WzpEngine_nativeForceProfile(
_env: JNIEnv,
_class: JClass,
handle: jlong,
profile: jint,
) {
let _ = panic::catch_unwind(panic::AssertUnwindSafe(|| {
let h = unsafe { handle_ref(handle) };
let qp = profile_from_int(profile);
h.engine.force_profile(qp);
}));
}
/// Write captured PCM samples from Kotlin AudioRecord into the engine's capture ring.
/// pcm is a Java short[] array.
#[unsafe(no_mangle)]
pub unsafe extern "system" fn Java_com_wzp_engine_WzpEngine_nativeWriteAudio(
env: JNIEnv,
_class: JClass,
handle: jlong,
pcm: jni::objects::JShortArray,
) -> jint {
let result = panic::catch_unwind(panic::AssertUnwindSafe(|| {
let h = unsafe { handle_ref(handle) };
let len = env.get_array_length(&pcm).unwrap_or(0) as usize;
if len == 0 {
return 0;
}
let mut buf = vec![0i16; len];
if env.get_short_array_region(&pcm, 0, &mut buf).is_err() {
return 0;
}
h.engine.write_audio(&buf) as jint
}));
result.unwrap_or(0)
}
/// Read decoded PCM samples from the engine's playout ring for Kotlin AudioTrack.
/// pcm is a Java short[] array to fill. Returns number of samples actually read.
#[unsafe(no_mangle)]
pub unsafe extern "system" fn Java_com_wzp_engine_WzpEngine_nativeReadAudio(
env: JNIEnv,
_class: JClass,
handle: jlong,
pcm: jni::objects::JShortArray,
) -> jint {
let result = panic::catch_unwind(panic::AssertUnwindSafe(|| {
let h = unsafe { handle_ref(handle) };
let len = env.get_array_length(&pcm).unwrap_or(0) as usize;
if len == 0 {
return 0;
}
let mut buf = vec![0i16; len];
let read = h.engine.read_audio(&mut buf);
if read > 0 {
let _ = env.set_short_array_region(&pcm, 0, &buf[..read]);
}
read as jint
}));
result.unwrap_or(0)
}
/// Write captured PCM from a DirectByteBuffer — zero JNI array copies.
/// The ByteBuffer must contain little-endian i16 samples.
/// Called from the AudioRecord capture thread.
#[unsafe(no_mangle)]
pub unsafe extern "system" fn Java_com_wzp_engine_WzpEngine_nativeWriteAudioDirect(
env: JNIEnv,
_class: JClass,
handle: jlong,
buffer: jni::objects::JByteBuffer,
sample_count: jint,
) -> jint {
let result = panic::catch_unwind(panic::AssertUnwindSafe(|| {
let h = unsafe { handle_ref(handle) };
let ptr = env.get_direct_buffer_address(&buffer).unwrap_or(std::ptr::null_mut());
if ptr.is_null() || sample_count <= 0 {
return 0;
}
let samples = unsafe {
std::slice::from_raw_parts(ptr as *const i16, sample_count as usize)
};
h.engine.write_audio(samples) as jint
}));
result.unwrap_or(0)
}
/// Read decoded PCM into a DirectByteBuffer — zero JNI array copies.
/// The ByteBuffer will be filled with little-endian i16 samples.
/// Called from the AudioTrack playout thread.
#[unsafe(no_mangle)]
pub unsafe extern "system" fn Java_com_wzp_engine_WzpEngine_nativeReadAudioDirect(
env: JNIEnv,
_class: JClass,
handle: jlong,
buffer: jni::objects::JByteBuffer,
max_samples: jint,
) -> jint {
let result = panic::catch_unwind(panic::AssertUnwindSafe(|| {
let h = unsafe { handle_ref(handle) };
let ptr = env.get_direct_buffer_address(&buffer).unwrap_or(std::ptr::null_mut());
if ptr.is_null() || max_samples <= 0 {
return 0;
}
let samples = unsafe {
std::slice::from_raw_parts_mut(ptr as *mut i16, max_samples as usize)
};
h.engine.read_audio(samples) as jint
}));
result.unwrap_or(0)
}
#[unsafe(no_mangle)]
pub unsafe extern "system" fn Java_com_wzp_engine_WzpEngine_nativeDestroy(
_env: JNIEnv,
_class: JClass,
handle: jlong,
) {
let _ = panic::catch_unwind(panic::AssertUnwindSafe(|| {
let h = unsafe { Box::from_raw(handle as *mut EngineHandle) };
drop(h);
}));
}
/// Ping a relay server — instance method, requires engine handle.
/// Returns JSON `{"rtt_ms":N,"server_fingerprint":"hex"}` or null on failure.
#[unsafe(no_mangle)]
pub unsafe extern "system" fn Java_com_wzp_engine_WzpEngine_nativePingRelay<'a>(
mut env: JNIEnv<'a>,
_class: JClass,
handle: jlong,
relay_j: JString,
) -> jstring {
let result = panic::catch_unwind(panic::AssertUnwindSafe(|| {
let h = unsafe { handle_ref(handle) };
let relay: String = env.get_string(&relay_j).map(|s| s.into()).unwrap_or_default();
match h.engine.ping_relay(&relay) {
Ok(json) => Some(json),
Err(_) => None,
}
}));
let json = match result {
Ok(Some(s)) => s,
_ => return JObject::null().into_raw(),
};
env.new_string(&json)
.map(|s| s.into_raw())
.unwrap_or(JObject::null().into_raw())
}
/// Get the identity fingerprint for a seed hex string.
/// Returns the full fingerprint (xxxx:xxxx:...) or empty string on error.
#[unsafe(no_mangle)]
pub unsafe extern "system" fn Java_com_wzp_engine_WzpEngine_nativeGetFingerprint<'a>(
mut env: JNIEnv<'a>,
_class: JClass,
seed_hex_j: JString,
) -> jstring {
let seed_hex: String = env.get_string(&seed_hex_j).map(|s| s.into()).unwrap_or_default();
let fp = if seed_hex.is_empty() {
String::new()
} else {
match wzp_crypto::Seed::from_hex(&seed_hex) {
Ok(seed) => {
let id = seed.derive_identity();
id.public_identity().fingerprint.to_string()
}
Err(_) => String::new(),
}
};
env.new_string(&fp)
.map(|s| s.into_raw())
.unwrap_or(JObject::null().into_raw())
}
// ── Direct calling JNI functions ──
// ── SignalManager JNI functions ──
/// Opaque handle for SignalManager (separate from EngineHandle).
struct SignalHandle {
mgr: crate::signal_mgr::SignalManager,
}
unsafe fn signal_ref(handle: jlong) -> &'static SignalHandle {
unsafe { &*(handle as *const SignalHandle) }
}
/// Connect to relay for signaling. Returns handle (jlong) or 0 on error.
/// Blocks up to 10s waiting for the internal signal thread to connect.
#[unsafe(no_mangle)]
pub unsafe extern "system" fn Java_com_wzp_engine_SignalManager_nativeSignalConnect<'a>(
mut env: JNIEnv<'a>,
_class: JClass,
relay_j: JString,
seed_j: JString,
) -> jlong {
info!("nativeSignalConnect: entered");
let relay: String = env.get_string(&relay_j).map(|s| s.into()).unwrap_or_default();
let seed: String = env.get_string(&seed_j).map(|s| s.into()).unwrap_or_default();
info!(relay = %relay, seed_len = seed.len(), "nativeSignalConnect: parsed strings");
// start() spawns an internal thread (connect+register+recv, ONE runtime, never dropped).
// Blocks up to 10s waiting for the connect+register to complete.
match crate::signal_mgr::SignalManager::start(&relay, &seed) {
Ok(mgr) => {
let handle = Box::new(SignalHandle { mgr });
Box::into_raw(handle) as jlong
}
Err(e) => {
error!("signal connect failed: {e}");
0
}
}
}
/// Get signal state as JSON string.
#[unsafe(no_mangle)]
pub unsafe extern "system" fn Java_com_wzp_engine_SignalManager_nativeSignalGetState<'a>(
mut env: JNIEnv<'a>,
_class: JClass,
handle: jlong,
) -> jstring {
if handle == 0 { return JObject::null().into_raw(); }
let h = signal_ref(handle);
let json = h.mgr.get_state_json();
env.new_string(&json)
.map(|s| s.into_raw())
.unwrap_or(JObject::null().into_raw())
}
/// Place a direct call.
#[unsafe(no_mangle)]
pub unsafe extern "system" fn Java_com_wzp_engine_SignalManager_nativeSignalPlaceCall<'a>(
mut env: JNIEnv<'a>,
_class: JClass,
handle: jlong,
target_j: JString,
) -> jint {
if handle == 0 { return -1; }
let h = signal_ref(handle);
let target: String = env.get_string(&target_j).map(|s| s.into()).unwrap_or_default();
match h.mgr.place_call(&target) {
Ok(()) => 0,
Err(e) => { error!("place_call: {e}"); -1 }
}
}
/// Answer an incoming call.
#[unsafe(no_mangle)]
pub unsafe extern "system" fn Java_com_wzp_engine_SignalManager_nativeSignalAnswerCall<'a>(
mut env: JNIEnv<'a>,
_class: JClass,
handle: jlong,
call_id_j: JString,
mode: jint,
) -> jint {
if handle == 0 { return -1; }
let h = signal_ref(handle);
let call_id: String = env.get_string(&call_id_j).map(|s| s.into()).unwrap_or_default();
let accept_mode = match mode {
0 => wzp_proto::CallAcceptMode::Reject,
1 => wzp_proto::CallAcceptMode::AcceptTrusted,
_ => wzp_proto::CallAcceptMode::AcceptGeneric,
};
match h.mgr.answer_call(&call_id, accept_mode) {
Ok(()) => 0,
Err(e) => { error!("answer_call: {e}"); -1 }
}
}
/// Send hangup signal.
#[unsafe(no_mangle)]
pub unsafe extern "system" fn Java_com_wzp_engine_SignalManager_nativeSignalHangup(
_env: JNIEnv,
_class: JClass,
handle: jlong,
) {
if handle == 0 { return; }
let h = signal_ref(handle);
h.mgr.hangup();
}
/// Destroy the signal manager and free resources.
#[unsafe(no_mangle)]
pub unsafe extern "system" fn Java_com_wzp_engine_SignalManager_nativeSignalDestroy(
_env: JNIEnv,
_class: JClass,
handle: jlong,
) {
if handle == 0 { return; }
let h = signal_ref(handle);
h.mgr.stop();
// Reclaim the Box
let _ = unsafe { Box::from_raw(handle as *mut SignalHandle) };
}

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crates/wzp-android/src/lib.rs Normal file
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//! WarzonePhone Android native VoIP engine.
//!
//! Provides:
//! - Oboe audio backend with lock-free SPSC ring buffers
//! - Engine orchestrator managing call lifecycle
//! - Codec pipeline thread (encode/decode/FEC/jitter)
//! - Call statistics and command interface
//!
//! On non-Android targets, the Oboe C++ layer compiles as a stub,
//! allowing `cargo check` and unit tests on the host.
pub mod audio_android;
pub mod audio_ring;
pub mod commands;
pub mod engine;
pub mod pipeline;
pub mod signal_mgr;
pub mod stats;
pub mod jni_bridge;

262
crates/wzp-android/src/pipeline.rs Normal file
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//! Codec pipeline — encode/decode with FEC and jitter buffer.
//!
//! Runs on a dedicated thread, processing 20 ms frames at 48 kHz.
//! The pipeline is NOT Send/Sync (Opus encoder state) — it is owned
//! exclusively by the codec thread.
use tracing::{debug, warn};
use wzp_codec::{AdaptiveDecoder, AdaptiveEncoder, AutoGainControl, EchoCanceller};
use wzp_fec::{RaptorQFecDecoder, RaptorQFecEncoder};
use wzp_proto::jitter::{JitterBuffer, PlayoutResult};
use wzp_proto::quality::AdaptiveQualityController;
use wzp_proto::traits::{AudioDecoder, AudioEncoder, FecDecoder, FecEncoder};
use wzp_proto::traits::QualityController;
use wzp_proto::{MediaPacket, QualityProfile};
use crate::audio_android::FRAME_SAMPLES;
/// Maximum encoded frame size (Opus worst case at highest bitrate).
const MAX_ENCODED_BYTES: usize = 1275;
/// Pipeline statistics snapshot.
#[derive(Clone, Debug, Default)]
pub struct PipelineStats {
pub frames_encoded: u64,
pub frames_decoded: u64,
pub underruns: u64,
pub jitter_depth: usize,
pub quality_tier: u8,
}
/// The codec pipeline: encode, FEC, jitter buffer, decode.
///
/// This struct is owned by the codec thread and not shared.
pub struct Pipeline {
encoder: AdaptiveEncoder,
decoder: AdaptiveDecoder,
fec_encoder: RaptorQFecEncoder,
fec_decoder: RaptorQFecDecoder,
jitter_buffer: JitterBuffer,
quality_ctrl: AdaptiveQualityController,
/// Acoustic echo canceller applied before encoding.
aec: EchoCanceller,
/// Automatic gain control applied before encoding.
agc: AutoGainControl,
/// Last decoded PCM frame, used as the AEC far-end reference.
last_decoded_farend: Option<Vec<i16>>,
// Pre-allocated scratch buffers
capture_buf: Vec<i16>,
#[allow(dead_code)]
playout_buf: Vec<i16>,
encode_out: Vec<u8>,
// Stats counters
frames_encoded: u64,
frames_decoded: u64,
underruns: u64,
}
impl Pipeline {
/// Create a new pipeline configured for the given quality profile.
pub fn new(profile: QualityProfile) -> Result<Self, anyhow::Error> {
let encoder = AdaptiveEncoder::new(profile)
.map_err(|e| anyhow::anyhow!("encoder init: {e}"))?;
let decoder = AdaptiveDecoder::new(profile)
.map_err(|e| anyhow::anyhow!("decoder init: {e}"))?;
let fec_encoder =
RaptorQFecEncoder::with_defaults(profile.frames_per_block as usize);
let fec_decoder =
RaptorQFecDecoder::with_defaults(profile.frames_per_block as usize);
let jitter_buffer = JitterBuffer::new(10, 250, 3);
let quality_ctrl = AdaptiveQualityController::new();
Ok(Self {
encoder,
decoder,
fec_encoder,
fec_decoder,
jitter_buffer,
quality_ctrl,
aec: EchoCanceller::new(48000, 100), // 100 ms echo tail
agc: AutoGainControl::new(),
last_decoded_farend: None,
capture_buf: vec![0i16; FRAME_SAMPLES],
playout_buf: vec![0i16; FRAME_SAMPLES],
encode_out: vec![0u8; MAX_ENCODED_BYTES],
frames_encoded: 0,
frames_decoded: 0,
underruns: 0,
})
}
/// Encode a PCM frame into a compressed packet.
///
/// If `muted` is true, a silence frame is encoded (all zeros).
/// Returns the encoded bytes, or `None` on encoder error.
pub fn encode_frame(&mut self, pcm: &[i16], muted: bool) -> Option<Vec<u8>> {
let input = if muted {
// Zero the capture buffer for silence
for s in self.capture_buf.iter_mut() {
*s = 0;
}
&self.capture_buf[..]
} else {
// Feed the last decoded playout as AEC far-end reference.
if let Some(ref farend) = self.last_decoded_farend {
self.aec.feed_farend(farend);
}
// Apply AEC + AGC to the captured PCM.
let len = pcm.len().min(self.capture_buf.len());
self.capture_buf[..len].copy_from_slice(&pcm[..len]);
self.aec.process_frame(&mut self.capture_buf[..len]);
self.agc.process_frame(&mut self.capture_buf[..len]);
&self.capture_buf[..len]
};
match self.encoder.encode(input, &mut self.encode_out) {
Ok(n) => {
self.frames_encoded += 1;
let encoded = self.encode_out[..n].to_vec();
// Feed into FEC encoder
if let Err(e) = self.fec_encoder.add_source_symbol(&encoded) {
warn!("FEC encode error: {e}");
}
Some(encoded)
}
Err(e) => {
warn!("encode error: {e}");
None
}
}
}
/// Feed a received media packet into the jitter buffer.
pub fn feed_packet(&mut self, packet: MediaPacket) {
// Feed FEC symbols if present
let header = &packet.header;
if header.fec_block != 0 || header.fec_symbol != 0 {
let is_repair = header.is_repair;
if let Err(e) = self.fec_decoder.add_symbol(
header.fec_block,
header.fec_symbol,
is_repair,
&packet.payload,
) {
debug!("FEC symbol feed error: {e}");
}
}
self.jitter_buffer.push(packet);
}
/// Decode the next frame from the jitter buffer.
///
/// Returns decoded PCM samples, or `None` if the buffer is not ready.
/// Decoded PCM is also stored as the AEC far-end reference for the next
/// encode cycle.
pub fn decode_frame(&mut self) -> Option<Vec<i16>> {
let result = match self.jitter_buffer.pop() {
PlayoutResult::Packet(pkt) => {
let mut pcm = vec![0i16; FRAME_SAMPLES];
match self.decoder.decode(&pkt.payload, &mut pcm) {
Ok(n) => {
self.frames_decoded += 1;
pcm.truncate(n);
Some(pcm)
}
Err(e) => {
warn!("decode error: {e}");
// Attempt PLC
self.generate_plc()
}
}
}
PlayoutResult::Missing { seq } => {
debug!(seq, "jitter buffer: missing packet, generating PLC");
self.generate_plc()
}
PlayoutResult::NotReady => {
self.underruns += 1;
None
}
};
// Save decoded PCM as far-end reference for AEC.
if let Some(ref pcm) = result {
self.last_decoded_farend = Some(pcm.clone());
}
result
}
/// Generate packet loss concealment output.
fn generate_plc(&mut self) -> Option<Vec<i16>> {
let mut pcm = vec![0i16; FRAME_SAMPLES];
match self.decoder.decode_lost(&mut pcm) {
Ok(n) => {
self.frames_decoded += 1;
pcm.truncate(n);
Some(pcm)
}
Err(e) => {
warn!("PLC error: {e}");
None
}
}
}
/// Feed a quality report into the adaptive quality controller.
///
/// Returns a new profile if a tier transition occurred.
#[allow(unused)]
pub fn observe_quality(
&mut self,
report: &wzp_proto::QualityReport,
) -> Option<QualityProfile> {
let new_profile = self.quality_ctrl.observe(report);
if let Some(ref profile) = new_profile {
if let Err(e) = self.encoder.set_profile(*profile) {
warn!("encoder set_profile error: {e}");
}
if let Err(e) = self.decoder.set_profile(*profile) {
warn!("decoder set_profile error: {e}");
}
}
new_profile
}
/// Force a specific quality profile.
#[allow(unused)]
pub fn force_profile(&mut self, profile: QualityProfile) {
self.quality_ctrl.force_profile(profile);
if let Err(e) = self.encoder.set_profile(profile) {
warn!("encoder set_profile error: {e}");
}
if let Err(e) = self.decoder.set_profile(profile) {
warn!("decoder set_profile error: {e}");
}
}
/// Get current pipeline statistics.
pub fn stats(&self) -> PipelineStats {
PipelineStats {
frames_encoded: self.frames_encoded,
frames_decoded: self.frames_decoded,
underruns: self.underruns,
jitter_depth: self.jitter_buffer.stats().current_depth,
quality_tier: self.quality_ctrl.tier() as u8,
}
}
/// Enable or disable acoustic echo cancellation.
pub fn set_aec_enabled(&mut self, enabled: bool) {
self.aec.set_enabled(enabled);
}
/// Enable or disable automatic gain control.
pub fn set_agc_enabled(&mut self, enabled: bool) {
self.agc.set_enabled(enabled);
}
}

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crates/wzp-android/src/signal_mgr.rs Normal file
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//! Persistent signal connection manager for direct 1:1 calls.
//!
//! Separate from the media engine — survives across calls.
//! Connects to relay via `_signal` SNI, registers presence,
//! and handles call signaling (offer/answer/setup/hangup).
use std::net::SocketAddr;
use std::sync::atomic::{AtomicBool, Ordering};
use std::sync::{Arc, Mutex};
use tracing::{error, info, warn};
use wzp_proto::{MediaTransport, SignalMessage};
/// Signal connection status.
#[derive(Clone, Debug, Default, serde::Serialize)]
pub struct SignalState {
pub status: String, // "idle", "registered", "ringing", "incoming", "setup"
pub fingerprint: String,
#[serde(skip_serializing_if = "Option::is_none")]
pub incoming_call_id: Option<String>,
#[serde(skip_serializing_if = "Option::is_none")]
pub incoming_caller_fp: Option<String>,
#[serde(skip_serializing_if = "Option::is_none")]
pub incoming_caller_alias: Option<String>,
#[serde(skip_serializing_if = "Option::is_none")]
pub call_setup_relay: Option<String>,
#[serde(skip_serializing_if = "Option::is_none")]
pub call_setup_room: Option<String>,
#[serde(skip_serializing_if = "Option::is_none")]
pub call_setup_id: Option<String>,
}
/// Manages a persistent `_signal` QUIC connection to a relay.
pub struct SignalManager {
transport: Arc<wzp_transport::QuinnTransport>,
state: Arc<Mutex<SignalState>>,
running: Arc<AtomicBool>,
}
impl SignalManager {
/// Create SignalManager and start connect+register+recv on a background thread.
/// Returns immediately. The internal thread runs forever.
/// CRITICAL: tokio runtime must never be dropped on Android (libcrypto TLS conflict).
pub fn start(relay_addr: &str, seed_hex: &str) -> Result<Self, anyhow::Error> {
let addr: SocketAddr = relay_addr.parse()?;
let seed = if seed_hex.is_empty() {
wzp_crypto::Seed::generate()
} else {
wzp_crypto::Seed::from_hex(seed_hex).map_err(|e| anyhow::anyhow!(e))?
};
let identity = seed.derive_identity();
let pub_id = identity.public_identity();
let identity_pub = *pub_id.signing.as_bytes();
let fp = pub_id.fingerprint.to_string();
let state = Arc::new(Mutex::new(SignalState {
status: "connecting".into(),
fingerprint: fp.clone(),
..Default::default()
}));
let running = Arc::new(AtomicBool::new(true));
// Channel to receive transport after connect succeeds
let (transport_tx, transport_rx) = std::sync::mpsc::channel();
let bg_state = Arc::clone(&state);
let bg_running = Arc::clone(&running);
let ret_state = Arc::clone(&state);
let ret_running = Arc::clone(&running);
// ONE thread, ONE runtime, NEVER dropped.
// Connect + register + recv loop all happen here.
std::thread::Builder::new()
.name("wzp-signal".into())
.stack_size(4 * 1024 * 1024)
.spawn(move || {
let rt = tokio::runtime::Builder::new_current_thread()
.enable_all()
.build()
.expect("tokio runtime");
rt.block_on(async move {
info!(fingerprint = %fp, relay = %addr, "signal: connecting");
let bind: SocketAddr = "0.0.0.0:0".parse().unwrap();
let endpoint = match wzp_transport::create_endpoint(bind, None) {
Ok(e) => e,
Err(e) => {
error!("signal endpoint: {e}");
bg_state.lock().unwrap().status = "idle".into();
return;
}
};
let client_cfg = wzp_transport::client_config();
let conn = match wzp_transport::connect(&endpoint, addr, "_signal", client_cfg).await {
Ok(c) => c,
Err(e) => {
error!("signal connect: {e}");
bg_state.lock().unwrap().status = "idle".into();
return;
}
};
let transport = Arc::new(wzp_transport::QuinnTransport::new(conn));
// Register
if let Err(e) = transport.send_signal(&SignalMessage::RegisterPresence {
identity_pub, signature: vec![], alias: None,
}).await {
error!("signal register: {e}");
bg_state.lock().unwrap().status = "idle".into();
return;
}
match transport.recv_signal().await {
Ok(Some(SignalMessage::RegisterPresenceAck { success: true, .. })) => {
info!(fingerprint = %fp, "signal: registered");
bg_state.lock().unwrap().status = "registered".into();
// Send transport to caller
let _ = transport_tx.send(transport.clone());
}
other => {
error!("signal registration failed: {other:?}");
bg_state.lock().unwrap().status = "idle".into();
return;
}
}
// Recv loop — runs forever
loop {
if !running.load(Ordering::Relaxed) { break; }
match transport.recv_signal().await {
Ok(Some(SignalMessage::CallRinging { call_id })) => {
info!(call_id = %call_id, "signal: ringing");
let mut s = state.lock().unwrap();
s.status = "ringing".into();
}
Ok(Some(SignalMessage::DirectCallOffer { caller_fingerprint, caller_alias, call_id, .. })) => {
info!(from = %caller_fingerprint, call_id = %call_id, "signal: incoming call");
let mut s = state.lock().unwrap();
s.status = "incoming".into();
s.incoming_call_id = Some(call_id);
s.incoming_caller_fp = Some(caller_fingerprint);
s.incoming_caller_alias = caller_alias;
}
Ok(Some(SignalMessage::DirectCallAnswer { call_id, accept_mode, .. })) => {
info!(call_id = %call_id, mode = ?accept_mode, "signal: call answered");
}
Ok(Some(SignalMessage::CallSetup { call_id, room, relay_addr })) => {
info!(call_id = %call_id, room = %room, relay = %relay_addr, "signal: call setup");
let mut s = state.lock().unwrap();
s.status = "setup".into();
s.call_setup_relay = Some(relay_addr);
s.call_setup_room = Some(room);
s.call_setup_id = Some(call_id);
}
Ok(Some(SignalMessage::Hangup { reason })) => {
info!(reason = ?reason, "signal: hangup");
let mut s = state.lock().unwrap();
s.status = "registered".into();
s.incoming_call_id = None;
s.incoming_caller_fp = None;
s.incoming_caller_alias = None;
s.call_setup_relay = None;
s.call_setup_room = None;
s.call_setup_id = None;
}
Ok(Some(_)) => {}
Ok(None) => {
info!("signal: connection closed");
break;
}
Err(e) => {
error!("signal recv error: {e}");
break;
}
}
}
bg_state.lock().unwrap().status = "idle".into();
}); // block_on
// Runtime intentionally NOT dropped — lives until thread exits.
// This prevents ring/libcrypto TLS cleanup conflict on Android.
// The thread is parked here forever (block_on returned = connection lost).
std::thread::park();
})?; // thread spawn
// Wait for transport (up to 10s)
let transport = transport_rx.recv_timeout(std::time::Duration::from_secs(10))
.map_err(|_| anyhow::anyhow!("signal connect timeout — check relay address"))?;
Ok(Self { transport, state: ret_state, running: ret_running })
}
/// Get current state (non-blocking).
pub fn get_state(&self) -> SignalState {
self.state.lock().unwrap().clone()
}
/// Get state as JSON string.
pub fn get_state_json(&self) -> String {
serde_json::to_string(&self.get_state()).unwrap_or_else(|_| "{}".into())
}
/// Place a direct call.
pub fn place_call(&self, target_fp: &str) -> Result<(), anyhow::Error> {
let fp = self.state.lock().unwrap().fingerprint.clone();
let target = target_fp.to_string();
let call_id = format!("{:016x}", std::time::SystemTime::now()
.duration_since(std::time::UNIX_EPOCH).unwrap().as_nanos());
let transport = self.transport.clone();
// Send on a small thread (async send needs a runtime)
std::thread::Builder::new()
.name("wzp-call-send".into())
.spawn(move || {
let rt = tokio::runtime::Builder::new_current_thread()
.enable_all().build().expect("rt");
rt.block_on(async {
let _ = transport.send_signal(&SignalMessage::DirectCallOffer {
caller_fingerprint: fp,
caller_alias: None,
target_fingerprint: target,
call_id,
identity_pub: [0u8; 32],
ephemeral_pub: [0u8; 32],
signature: vec![],
supported_profiles: vec![wzp_proto::QualityProfile::GOOD],
}).await;
});
})?;
Ok(())
}
/// Answer an incoming call.
pub fn answer_call(&self, call_id: &str, mode: wzp_proto::CallAcceptMode) -> Result<(), anyhow::Error> {
let call_id = call_id.to_string();
let transport = self.transport.clone();
std::thread::Builder::new()
.name("wzp-answer-send".into())
.spawn(move || {
let rt = tokio::runtime::Builder::new_current_thread()
.enable_all().build().expect("rt");
rt.block_on(async {
let _ = transport.send_signal(&SignalMessage::DirectCallAnswer {
call_id,
accept_mode: mode,
identity_pub: None,
ephemeral_pub: None,
signature: None,
chosen_profile: Some(wzp_proto::QualityProfile::GOOD),
}).await;
});
})?;
Ok(())
}
/// Send hangup.
pub fn hangup(&self) {
let transport = self.transport.clone();
let state = self.state.clone();
std::thread::spawn(move || {
let rt = tokio::runtime::Builder::new_current_thread()
.enable_all().build().expect("rt");
rt.block_on(async {
let _ = transport.send_signal(&SignalMessage::Hangup {
reason: wzp_proto::HangupReason::Normal,
}).await;
});
let mut s = state.lock().unwrap();
s.status = "registered".into();
s.incoming_call_id = None;
s.incoming_caller_fp = None;
s.incoming_caller_alias = None;
s.call_setup_relay = None;
s.call_setup_room = None;
s.call_setup_id = None;
});
}
/// Stop the signal connection.
pub fn stop(&self) {
self.running.store(false, Ordering::Release);
self.transport.connection().close(0u32.into(), b"shutdown");
}
}

109
crates/wzp-android/src/stats.rs Normal file
View File

@@ -0,0 +1,109 @@
//! Call statistics for the Android engine.
/// State of the call.
/// Serializes as integer for easy parsing on the Kotlin side:
/// 0=Idle, 1=Connecting, 2=Active, 3=Reconnecting, 4=Closed
#[derive(Clone, Debug, Default, PartialEq, Eq)]
pub enum CallState {
#[default]
Idle,
Connecting,
Active,
Reconnecting,
Closed,
/// Connected to relay signal channel, registered for direct calls.
Registered,
/// Outgoing call ringing on callee's side.
Ringing,
/// Incoming call received, waiting for user to accept/reject.
IncomingCall,
}
impl serde::Serialize for CallState {
fn serialize<S: serde::Serializer>(&self, serializer: S) -> Result<S::Ok, S::Error> {
let n: u8 = match self {
CallState::Idle => 0,
CallState::Connecting => 1,
CallState::Active => 2,
CallState::Reconnecting => 3,
CallState::Closed => 4,
CallState::Registered => 5,
CallState::Ringing => 6,
CallState::IncomingCall => 7,
};
serializer.serialize_u8(n)
}
}
/// Aggregated call statistics, serializable for JNI bridge.
#[derive(Clone, Debug, Default, serde::Serialize)]
pub struct CallStats {
/// Current call state.
pub state: CallState,
/// Call duration in seconds.
pub duration_secs: f64,
/// Current quality tier (0=GOOD, 1=DEGRADED, 2=CATASTROPHIC).
pub quality_tier: u8,
/// Observed packet loss percentage.
pub loss_pct: f32,
/// Smoothed round-trip time in milliseconds.
pub rtt_ms: u32,
/// Jitter in milliseconds.
pub jitter_ms: u32,
/// Current jitter buffer depth in packets.
pub jitter_buffer_depth: usize,
/// Total frames encoded since call start.
pub frames_encoded: u64,
/// Total frames decoded since call start.
pub frames_decoded: u64,
/// Number of playout underruns (buffer empty when audio needed).
pub underruns: u64,
/// Frames recovered by RaptorQ FEC (Codec2 tiers only; Opus bypasses
/// RaptorQ per Phase 2).
pub fec_recovered: u64,
/// Phase 3c: Opus frames reconstructed via DRED side-channel data.
/// Only increments on the Opus tiers; always zero for Codec2.
pub dred_reconstructions: u64,
/// Phase 3c: Opus frames filled via classical Opus PLC because no DRED
/// state covered the gap, plus any decode-error fallbacks. Codec2 loss
/// also increments this counter via the Codec2 PLC path.
pub classical_plc_invocations: u64,
/// Playout ring overflow count (reader was lapped by writer).
pub playout_overflows: u64,
/// Playout ring underrun count (reader found empty buffer).
pub playout_underruns: u64,
/// Capture ring overflow count.
pub capture_overflows: u64,
/// Current mic audio level (RMS of i16 samples, 0-32767).
pub audio_level: u32,
/// Our current outgoing codec name (e.g. "Opus24k", "Codec2_1200").
pub current_codec: String,
/// Last seen incoming codec from other participants.
pub peer_codec: String,
/// Whether auto quality mode is active.
pub auto_mode: bool,
/// Number of participants in the room (from last RoomUpdate).
pub room_participant_count: u32,
/// Participant list (fingerprint + optional alias) serialized as JSON array.
pub room_participants: Vec<RoomMember>,
/// SAS code for verbal verification (None if not in a call).
#[serde(skip_serializing_if = "Option::is_none")]
pub sas_code: Option<u32>,
/// Incoming call info (present when state == IncomingCall).
#[serde(skip_serializing_if = "Option::is_none")]
pub incoming_call_id: Option<String>,
/// Fingerprint of the caller (present when state == IncomingCall).
#[serde(skip_serializing_if = "Option::is_none")]
pub incoming_caller_fp: Option<String>,
/// Alias of the caller (present when state == IncomingCall).
#[serde(skip_serializing_if = "Option::is_none")]
pub incoming_caller_alias: Option<String>,
}
/// A room member entry, serialized into the stats JSON.
#[derive(Clone, Debug, Default, serde::Serialize)]
pub struct RoomMember {
pub fingerprint: String,
pub alias: Option<String>,
pub relay_label: Option<String>,
}

625
crates/wzp-client/src/call.rs
View File

@@ -7,14 +7,15 @@ use std::time::{Duration, Instant};
use bytes::Bytes;
use tracing::{debug, info, warn};
use wzp_codec::{ComfortNoise, NoiseSupressor, SilenceDetector};
use wzp_codec::dred_ffi::{DredDecoderHandle, DredState};
use wzp_codec::{
AdaptiveDecoder, AutoGainControl, ComfortNoise, EchoCanceller, NoiseSupressor, SilenceDetector,
};
use wzp_fec::{RaptorQFecDecoder, RaptorQFecEncoder};
use wzp_proto::jitter::{JitterBuffer, PlayoutResult};
use wzp_proto::packet::{MediaHeader, MediaPacket, MiniFrameContext};
use wzp_proto::quality::AdaptiveQualityController;
use wzp_proto::traits::{
AudioDecoder, AudioEncoder, FecDecoder, FecEncoder,
};
use wzp_proto::traits::{AudioDecoder, AudioEncoder, FecDecoder, FecEncoder};
use wzp_proto::packet::QualityReport;
use wzp_proto::{CodecId, QualityProfile};
@@ -207,6 +208,10 @@ pub struct CallEncoder {
frame_in_block: u8,
/// Timestamp counter (ms).
timestamp_ms: u32,
/// Acoustic echo canceller (removes speaker echo from mic signal).
aec: EchoCanceller,
/// Automatic gain control (normalises mic level).
agc: AutoGainControl,
/// Silence detector for suppression.
silence_detector: SilenceDetector,
/// Whether silence suppression is enabled.
@@ -237,6 +242,8 @@ impl CallEncoder {
block_id: 0,
frame_in_block: 0,
timestamp_ms: 0,
aec: EchoCanceller::new(48000, 100), // 100 ms echo tail
agc: AutoGainControl::new(),
silence_detector: SilenceDetector::new(
config.silence_threshold_rms,
config.silence_hangover_frames,
@@ -274,15 +281,21 @@ impl CallEncoder {
/// Input: 48kHz mono PCM, frame size depends on profile (960 for 20ms, 1920 for 40ms).
/// Output: one or more MediaPackets to send.
pub fn encode_frame(&mut self, pcm: &[i16]) -> Result<Vec<MediaPacket>, anyhow::Error> {
// Noise suppression: denoise the PCM before silence detection and encoding.
let pcm = if self.denoiser.is_enabled() {
let mut buf = pcm.to_vec();
self.denoiser.process(&mut buf);
buf
} else {
pcm.to_vec()
};
let pcm = &pcm[..];
// Copy PCM into a mutable buffer for the processing pipeline.
let mut pcm_buf = pcm.to_vec();
// Step 1: Echo cancellation (far-end reference must have been fed already).
self.aec.process_frame(&mut pcm_buf);
// Step 2: Automatic gain control (normalise mic level).
self.agc.process_frame(&mut pcm_buf);
// Step 3: Noise suppression (RNNoise).
if self.denoiser.is_enabled() {
self.denoiser.process(&mut pcm_buf);
}
let pcm = &pcm_buf[..];
// Silence suppression: skip encoding silent frames, periodically send CN.
if self.suppression_enabled && self.silence_detector.is_silent(pcm) {
@@ -328,6 +341,22 @@ impl CallEncoder {
let enc_len = self.audio_enc.encode(pcm, &mut encoded)?;
encoded.truncate(enc_len);
// Phase 2: Opus tiers bypass RaptorQ entirely (DRED handles loss
// recovery at the codec layer). Codec2 tiers keep RaptorQ unchanged.
// On Opus packets, zero the FEC header fields so old receivers
// can cleanly identify "no RaptorQ block to assemble" and new
// receivers can short-circuit their FEC ingest path.
let is_opus = self.profile.codec.is_opus();
let (fec_block, fec_symbol, fec_ratio_encoded) = if is_opus {
(0u8, 0u8, 0u8)
} else {
(
self.block_id,
self.frame_in_block,
MediaHeader::encode_fec_ratio(self.profile.fec_ratio),
)
};
// Build source media packet
let source_pkt = MediaPacket {
header: MediaHeader {
@@ -335,11 +364,11 @@ impl CallEncoder {
is_repair: false,
codec_id: self.profile.codec,
has_quality_report: false,
fec_ratio_encoded: MediaHeader::encode_fec_ratio(self.profile.fec_ratio),
fec_ratio_encoded,
seq: self.seq,
timestamp: self.timestamp_ms,
fec_block: self.block_id,
fec_symbol: self.frame_in_block,
fec_block,
fec_symbol,
reserved: 0,
csrc_count: 0,
},
@@ -354,39 +383,42 @@ impl CallEncoder {
let mut output = vec![source_pkt];
// Add to FEC encoder
self.fec_enc.add_source_symbol(&encoded)?;
self.frame_in_block += 1;
// Codec2-only: feed RaptorQ and generate repair packets when the
// block is full. Opus tiers skip this entire block — DRED (active
// in Phase 1) provides codec-layer loss recovery.
if !is_opus {
self.fec_enc.add_source_symbol(&encoded)?;
self.frame_in_block += 1;
// If block is full, generate repair and finalize
if self.frame_in_block >= self.profile.frames_per_block {
if let Ok(repairs) = self.fec_enc.generate_repair(self.profile.fec_ratio) {
for (sym_idx, repair_data) in repairs {
output.push(MediaPacket {
header: MediaHeader {
version: 0,
is_repair: true,
codec_id: self.profile.codec,
has_quality_report: false,
fec_ratio_encoded: MediaHeader::encode_fec_ratio(
self.profile.fec_ratio,
),
seq: self.seq,
timestamp: self.timestamp_ms,
fec_block: self.block_id,
fec_symbol: sym_idx,
reserved: 0,
csrc_count: 0,
},
payload: Bytes::from(repair_data),
quality_report: None,
});
self.seq = self.seq.wrapping_add(1);
if self.frame_in_block >= self.profile.frames_per_block {
if let Ok(repairs) = self.fec_enc.generate_repair(self.profile.fec_ratio) {
for (sym_idx, repair_data) in repairs {
output.push(MediaPacket {
header: MediaHeader {
version: 0,
is_repair: true,
codec_id: self.profile.codec,
has_quality_report: false,
fec_ratio_encoded: MediaHeader::encode_fec_ratio(
self.profile.fec_ratio,
),
seq: self.seq,
timestamp: self.timestamp_ms,
fec_block: self.block_id,
fec_symbol: sym_idx,
reserved: 0,
csrc_count: 0,
},
payload: Bytes::from(repair_data),
quality_report: None,
});
self.seq = self.seq.wrapping_add(1);
}
}
let _ = self.fec_enc.finalize_block();
self.block_id = self.block_id.wrapping_add(1);
self.frame_in_block = 0;
}
let _ = self.fec_enc.finalize_block();
self.block_id = self.block_id.wrapping_add(1);
self.frame_in_block = 0;
}
Ok(output)
@@ -400,13 +432,34 @@ impl CallEncoder {
self.frame_in_block = 0;
Ok(())
}
/// Feed decoded playout audio as the echo reference signal.
///
/// Must be called with each decoded frame BEFORE the corresponding
/// microphone frame is processed.
pub fn feed_aec_farend(&mut self, farend: &[i16]) {
self.aec.feed_farend(farend);
}
/// Enable or disable acoustic echo cancellation.
pub fn set_aec_enabled(&mut self, enabled: bool) {
self.aec.set_enabled(enabled);
}
/// Enable or disable automatic gain control.
pub fn set_agc_enabled(&mut self, enabled: bool) {
self.agc.set_enabled(enabled);
}
}
/// Manages the recv/decode side of a call.
pub struct CallDecoder {
/// Audio decoder.
audio_dec: Box<dyn AudioDecoder>,
/// FEC decoder.
/// Audio decoder. Concrete `AdaptiveDecoder` (not `Box<dyn AudioDecoder>`)
/// because Phase 3b calls the inherent `reconstruct_from_dred` method,
/// which cannot live on the `AudioDecoder` trait without dragging libopus
/// types into `wzp-proto`.
audio_dec: AdaptiveDecoder,
/// FEC decoder (Codec2 tiers only; Opus bypasses RaptorQ per Phase 2).
fec_dec: RaptorQFecDecoder,
/// Jitter buffer.
jitter: JitterBuffer,
@@ -420,6 +473,24 @@ pub struct CallDecoder {
last_was_cn: bool,
/// Mini-frame decompression context (tracks last full header baseline).
mini_context: MiniFrameContext,
// ─── Phase 3b: DRED reconstruction state ──────────────────────────────
/// DRED side-channel parser (a separate libopus object from the decoder).
dred_decoder: DredDecoderHandle,
/// Scratch buffer used by `dred_decoder.parse_into` on every arriving
/// Opus packet. Reused across calls to avoid 10 KB alloc churn per packet.
dred_parse_scratch: DredState,
/// Cached "most recently parsed valid" DRED state, swapped with
/// `dred_parse_scratch` on successful parse. Used by `decode_next` when
/// the jitter buffer reports a gap.
last_good_dred: DredState,
/// Sequence number of the packet that produced `last_good_dred`. `None`
/// if no packet has yielded DRED state yet (cold start or legacy sender).
last_good_dred_seq: Option<u16>,
/// Phase 4 telemetry counter: gaps recovered via DRED reconstruction.
pub dred_reconstructions: u64,
/// Phase 4 telemetry counter: gaps filled via classical Opus PLC
/// (because no DRED state covered the gap, or the active codec is Codec2).
pub classical_plc_invocations: u64,
}
impl CallDecoder {
@@ -429,8 +500,19 @@ impl CallDecoder {
} else {
JitterBuffer::new(config.jitter_target, config.jitter_max, config.jitter_min)
};
// Phase 3b: build the DRED parser + state buffers. These allocate
// libopus state (~10 KB each) once per call, not per packet — the
// scratch and last-good buffers are reused via std::mem::swap on
// every successful parse.
let dred_decoder =
DredDecoderHandle::new().expect("opus_dred_decoder_create failed at call setup");
let dred_parse_scratch =
DredState::new().expect("opus_dred_alloc failed at call setup (scratch)");
let last_good_dred =
DredState::new().expect("opus_dred_alloc failed at call setup (good state)");
Self {
audio_dec: wzp_codec::create_decoder(config.profile),
audio_dec: AdaptiveDecoder::new(config.profile)
.expect("failed to create adaptive decoder"),
fec_dec: wzp_fec::create_decoder(&config.profile),
jitter,
quality: AdaptiveQualityController::new(),
@@ -438,6 +520,12 @@ impl CallDecoder {
comfort_noise: ComfortNoise::new(50),
last_was_cn: false,
mini_context: MiniFrameContext::default(),
dred_decoder,
dred_parse_scratch,
last_good_dred,
last_good_dred_seq: None,
dred_reconstructions: 0,
classical_plc_invocations: 0,
}
}
@@ -452,15 +540,54 @@ impl CallDecoder {
/// Feed a received media packet into the decode pipeline.
pub fn ingest(&mut self, packet: MediaPacket) {
// Feed to FEC decoder
let _ = self.fec_dec.add_symbol(
packet.header.fec_block,
packet.header.fec_symbol,
packet.header.is_repair,
&packet.payload,
);
// Phase 2: Opus packets bypass RaptorQ. Codec2 packets still feed
// the FEC decoder for recovery. This also cleanly drops any stray
// Opus repair packets from an old sender (we don't push repair
// packets to the jitter buffer either, so they're effectively
// ignored — a graceful mixed-version degradation).
if !packet.header.codec_id.is_opus() {
let _ = self.fec_dec.add_symbol(
packet.header.fec_block,
packet.header.fec_symbol,
packet.header.is_repair,
&packet.payload,
);
}
// If not a repair packet, also feed directly to jitter buffer
// Phase 3b: Opus source packets carry DRED side-channel data in
// libopus 1.5. Parse it into the scratch state and, on success,
// swap with the cached `last_good_dred` so later gap reconstruction
// has fresh neural redundancy to draw from. Parsing happens before
// the jitter push because the jitter buffer consumes the packet.
if packet.header.codec_id.is_opus() && !packet.header.is_repair {
match self
.dred_decoder
.parse_into(&mut self.dred_parse_scratch, &packet.payload)
{
Ok(available) if available > 0 => {
// Swap the freshly parsed state into `last_good_dred`.
// The old good state (now in scratch) is about to be
// overwritten on the next parse — its contents are
// not needed after this swap.
std::mem::swap(&mut self.dred_parse_scratch, &mut self.last_good_dred);
self.last_good_dred_seq = Some(packet.header.seq);
}
Ok(_) => {
// Packet had no DRED data (return 0). Leave the cached
// state untouched — it may still cover upcoming gaps
// from a warm-up period where the encoder was producing
// DRED bytes. The scratch buffer was potentially written
// but its `samples_available` is 0 so it's harmless.
}
Err(e) => {
debug!("DRED parse error (ignored): {e}");
}
}
}
// Source packets (Opus or Codec2) go to the jitter buffer for decode.
// Repair packets never reach the jitter buffer; for Codec2 they're
// used by the FEC decoder above, for Opus they're dropped here.
if !packet.header.is_repair {
self.jitter.push(packet);
}
@@ -494,19 +621,72 @@ impl CallDecoder {
result
}
PlayoutResult::Missing { seq } => {
// Only generate PLC if there are still packets buffered ahead.
// Only attempt recovery if there are still packets buffered ahead.
// Otherwise we've drained everything — return None to stop.
if self.jitter.depth() > 0 {
debug!(seq, "packet loss, generating PLC");
let result = self.audio_dec.decode_lost(pcm).ok();
if result.is_some() {
self.jitter.record_decode();
}
result
} else {
if self.jitter.depth() == 0 {
self.jitter.record_underrun();
None
return None;
}
// Phase 3b: try DRED reconstruction first. If we have a
// recent DRED state from a packet whose seq > missing seq,
// and the seq delta (in samples) fits within the state's
// available window, libopus can synthesize a plausible
// replacement for the lost frame. Fall back to classical
// PLC when no state covers the gap, when the active codec
// is Codec2, or when the reconstruction itself errors.
if self.profile.codec.is_opus() {
if let Some(last_seq) = self.last_good_dred_seq {
// How many frames ahead of the missing seq is the
// last-good packet? Use wrapping arithmetic for the
// u16 seq space.
let seq_delta = last_seq.wrapping_sub(seq);
// Reject stale or backward state. u16 wraparound
// would make a "seq went backward" delta very large;
// cap at a sane forward-looking window.
const MAX_SEQ_DELTA: u16 = 128;
if seq_delta > 0 && seq_delta <= MAX_SEQ_DELTA {
let frame_samples =
(48_000 * self.profile.frame_duration_ms as i32) / 1000;
let offset_samples = seq_delta as i32 * frame_samples;
let available = self.last_good_dred.samples_available();
if offset_samples > 0 && offset_samples <= available {
match self.audio_dec.reconstruct_from_dred(
&self.last_good_dred,
offset_samples,
pcm,
) {
Ok(n) => {
self.dred_reconstructions += 1;
self.jitter.record_decode();
debug!(
seq,
last_seq,
offset_samples,
available,
"DRED reconstruction for gap"
);
return Some(n);
}
Err(e) => {
// Reconstruction failed — fall
// through to classical PLC below.
debug!(seq, "DRED reconstruct error: {e}");
}
}
}
}
}
}
// Classical PLC fallback (also the Codec2 path).
debug!(seq, "packet loss, generating classical PLC");
self.classical_plc_invocations += 1;
let result = self.audio_dec.decode_lost(pcm).ok();
if result.is_some() {
self.jitter.record_decode();
}
result
}
PlayoutResult::NotReady => {
self.jitter.record_underrun();
@@ -529,6 +709,19 @@ impl CallDecoder {
pub fn reset_stats(&mut self) {
self.jitter.reset_stats();
}
/// Phase 3b introspection: sequence number of the most recently parsed
/// valid DRED state, or `None` if no Opus packet has yielded DRED data
/// yet. Used by tests to debug reconstruction eligibility.
pub fn last_good_dred_seq(&self) -> Option<u16> {
self.last_good_dred_seq
}
/// Phase 3b introspection: samples of audio history currently available
/// in the cached DRED state.
pub fn last_good_dred_samples_available(&self) -> i32 {
self.last_good_dred.samples_available()
}
}
/// Periodic telemetry logger for jitter buffer statistics.
@@ -590,18 +783,83 @@ mod tests {
assert!(!packets[0].header.is_repair);
}
/// Phase 2: Opus packets have zero FEC header fields — no block, no
/// symbol index, no repair ratio. The RaptorQ layer is bypassed
/// entirely on the Opus tiers.
#[test]
fn encoder_generates_repair_on_full_block() {
fn opus_source_packets_have_zero_fec_header_fields() {
let config = CallConfig {
profile: QualityProfile::GOOD, // 5 frames/block
profile: QualityProfile::GOOD, // Opus 24k
suppression_enabled: false, // skip silence gate for this test
..Default::default()
};
let mut enc = CallEncoder::new(&config);
let pcm = vec![0i16; 960];
// Non-silent sine wave so silence detection doesn't suppress us
// even with suppression_enabled=false (belt and braces).
let pcm: Vec<i16> = (0..960)
.map(|i| ((i as f32 * 0.1).sin() * 10_000.0) as i16)
.collect();
let packets = enc.encode_frame(&pcm).unwrap();
assert_eq!(packets.len(), 1, "Opus must emit exactly 1 source packet");
let hdr = &packets[0].header;
assert!(hdr.codec_id.is_opus());
assert!(!hdr.is_repair);
assert_eq!(hdr.fec_block, 0, "Opus fec_block must be 0");
assert_eq!(hdr.fec_symbol, 0, "Opus fec_symbol must be 0");
assert_eq!(hdr.fec_ratio_encoded, 0, "Opus fec_ratio_encoded must be 0");
}
let mut total_packets = 0;
let mut repair_count = 0;
for _ in 0..5 {
/// Phase 2: Opus never emits repair packets, regardless of how many
/// source frames are fed in. DRED (Phase 1) provides loss recovery at
/// the codec layer; RaptorQ is disabled on Opus tiers.
#[test]
fn opus_encoder_never_emits_repair_packets() {
let config = CallConfig {
profile: QualityProfile::GOOD, // 5 frames/block in the Codec2 sense
suppression_enabled: false,
..Default::default()
};
let mut enc = CallEncoder::new(&config);
let pcm: Vec<i16> = (0..960)
.map(|i| ((i as f32 * 0.1).sin() * 10_000.0) as i16)
.collect();
// Encode well beyond a block boundary to prove no repair ever comes out.
let mut total_packets = 0usize;
let mut repair_count = 0usize;
for _ in 0..20 {
let packets = enc.encode_frame(&pcm).unwrap();
total_packets += packets.len();
repair_count += packets.iter().filter(|p| p.header.is_repair).count();
}
assert_eq!(repair_count, 0, "Opus must emit zero repair packets");
assert_eq!(
total_packets, 20,
"20 source frames → 20 source packets (1:1, no RaptorQ expansion)"
);
}
/// Phase 2: Codec2 still emits repair packets with RaptorQ ratio unchanged.
/// DRED is libopus-only and does not apply here, so RaptorQ is still the
/// primary loss-recovery mechanism on Codec2 tiers.
#[test]
fn codec2_encoder_generates_repair_on_full_block() {
let config = CallConfig {
profile: QualityProfile::CATASTROPHIC, // Codec2 1200, 8 frames/block, ratio 1.0
suppression_enabled: false,
..Default::default()
};
let mut enc = CallEncoder::new(&config);
// Codec2 takes 48 kHz samples and downsamples internally.
// CATASTROPHIC uses 40 ms frames → 1920 samples.
let pcm: Vec<i16> = (0..1920)
.map(|i| ((i as f32 * 0.1).sin() * 10_000.0) as i16)
.collect();
let mut total_packets = 0usize;
let mut repair_count = 0usize;
// Run long enough to cross the 8-frame block boundary and see repairs.
for _ in 0..16 {
let packets = enc.encode_frame(&pcm).unwrap();
for p in &packets {
if p.header.is_repair {
@@ -610,8 +868,10 @@ mod tests {
}
total_packets += packets.len();
}
assert!(repair_count > 0, "should have repair packets after full block");
assert!(total_packets > 5, "total {total_packets} should exceed 5 source");
assert!(
repair_count > 0,
"Codec2 must still emit repair packets (got {repair_count} repairs, {total_packets} total)"
);
}
#[test]
@@ -642,6 +902,219 @@ mod tests {
assert!(dec.decode_next(&mut pcm).is_none());
}
// ─── Phase 3b — DRED reconstruction on packet loss ────────────────────
/// Helper: create a CallEncoder/CallDecoder pair with the given profile
/// and silence suppression disabled so silence-detection doesn't drop
/// our synthetic test frames.
fn encoder_decoder_pair(profile: QualityProfile) -> (CallEncoder, CallDecoder) {
let config = CallConfig {
profile,
suppression_enabled: false,
// Small jitter buffer so decode_next drains quickly in tests.
jitter_min: 2,
jitter_target: 3,
jitter_max: 20,
adaptive_jitter: false,
..Default::default()
};
(CallEncoder::new(&config), CallDecoder::new(&config))
}
/// Helper: generate a non-silent 20 ms frame of 300 Hz sine at the
/// given sample offset so consecutive frames form a continuous tone.
fn voice_frame_20ms(sample_offset: usize) -> Vec<i16> {
(0..960)
.map(|i| {
let t = (sample_offset + i) as f64 / 48_000.0;
(8000.0 * (2.0 * std::f64::consts::PI * 300.0 * t).sin()) as i16
})
.collect()
}
/// Phase 3b probe: sweep packet_loss_perc values to find the minimum
/// that produces a samples_available ≥ 960 (enough to reconstruct a
/// single 20 ms Opus frame). This guides the production loss floor.
#[test]
#[ignore] // diagnostic only — run with `cargo test ... -- --ignored --nocapture`
fn probe_dred_samples_available_by_loss_floor() {
use wzp_codec::opus_enc::OpusEncoder;
use wzp_proto::traits::AudioEncoder;
for loss_pct in [5u8, 10, 15, 20, 25, 40, 60, 80].iter().copied() {
let mut enc = OpusEncoder::new(QualityProfile::GOOD).unwrap();
enc.set_expected_loss(loss_pct);
let (_drop_enc, mut dec) = encoder_decoder_pair(QualityProfile::GOOD);
for i in 0..60u16 {
let pcm = voice_frame_20ms(i as usize * 960);
let mut encoded = vec![0u8; 512];
let n = enc.encode(&pcm, &mut encoded).unwrap();
encoded.truncate(n);
let pkt = MediaPacket {
header: MediaHeader {
version: 0,
is_repair: false,
codec_id: CodecId::Opus24k,
has_quality_report: false,
fec_ratio_encoded: 0,
seq: i,
timestamp: (i as u32) * 20,
fec_block: 0,
fec_symbol: 0,
reserved: 0,
csrc_count: 0,
},
payload: Bytes::from(encoded),
quality_report: None,
};
dec.ingest(pkt);
}
eprintln!(
"[phase3b probe] loss_pct={loss_pct} samples_available={}",
dec.last_good_dred_samples_available()
);
}
}
/// Phase 3b: simulated single-packet loss on an Opus call triggers a
/// DRED reconstruction rather than a classical PLC fill. Runs the full
/// encode → ingest → decode_next pipeline.
#[test]
fn opus_single_packet_loss_is_recovered_via_dred() {
let (mut enc, mut dec) = encoder_decoder_pair(QualityProfile::GOOD);
// Warm-up: encode and ingest 60 frames (1.2 s) so the DRED emitter
// has had time to fill its 200 ms window and at least one
// successful DRED parse has happened on the decoder side.
let warmup_frames = 60;
for i in 0..warmup_frames {
let pcm = voice_frame_20ms(i * 960);
let packets = enc.encode_frame(&pcm).unwrap();
for pkt in packets {
dec.ingest(pkt);
}
}
// Drain the warm-up frames through the decoder to advance the
// jitter buffer cursor past them.
let mut out = vec![0i16; 960];
while dec.decode_next(&mut out).is_some() {}
// Encode the next three frames but skip ingesting the middle one.
let base_offset = warmup_frames * 960;
let pcm_a = voice_frame_20ms(base_offset);
let pcm_b = voice_frame_20ms(base_offset + 960);
let pcm_c = voice_frame_20ms(base_offset + 1920);
let pkts_a = enc.encode_frame(&pcm_a).unwrap();
let pkts_b = enc.encode_frame(&pcm_b).unwrap(); // DROP THIS ONE
let pkts_c = enc.encode_frame(&pcm_c).unwrap();
for pkt in pkts_a {
dec.ingest(pkt);
}
// Skip pkts_b entirely — this is the "packet loss".
drop(pkts_b);
for pkt in pkts_c {
dec.ingest(pkt);
}
// Drain again. Somewhere in here decode_next will hit Missing()
// for the dropped packet and attempt DRED reconstruction.
let baseline_dred = dec.dred_reconstructions;
let baseline_plc = dec.classical_plc_invocations;
eprintln!(
"[phase3b probe] pre-drain: last_good_seq={:?} samples_available={}",
dec.last_good_dred_seq(),
dec.last_good_dred_samples_available()
);
while dec.decode_next(&mut out).is_some() {}
let dred_delta = dec.dred_reconstructions - baseline_dred;
let plc_delta = dec.classical_plc_invocations - baseline_plc;
eprintln!(
"[phase3b probe] post-drain: dred_delta={dred_delta} plc_delta={plc_delta}"
);
assert!(
dred_delta >= 1,
"expected ≥1 DRED reconstruction on single-packet loss, \
got dred_delta={dred_delta} plc_delta={plc_delta}"
);
}
/// Phase 3b: lossless stream never triggers DRED reconstruction or PLC.
/// Baseline behavior — verifies the Missing() branch is not spuriously taken.
#[test]
fn opus_lossless_ingest_never_triggers_dred_or_plc() {
let (mut enc, mut dec) = encoder_decoder_pair(QualityProfile::GOOD);
// Encode + ingest 40 frames with no drops.
for i in 0..40 {
let pcm = voice_frame_20ms(i * 960);
let packets = enc.encode_frame(&pcm).unwrap();
for pkt in packets {
dec.ingest(pkt);
}
}
let mut out = vec![0i16; 960];
while dec.decode_next(&mut out).is_some() {}
assert_eq!(
dec.dred_reconstructions, 0,
"lossless stream should not reconstruct"
);
assert_eq!(
dec.classical_plc_invocations, 0,
"lossless stream should not PLC"
);
}
/// Phase 3b: Codec2 calls fall through to classical PLC on loss.
/// DRED is libopus-only, so even if the decoder's DRED state were
/// populated (it won't be — Codec2 packets don't carry DRED bytes),
/// `reconstruct_from_dred` rejects Codec2 at the AdaptiveDecoder
/// level. This test guards the Codec2 side of the protection split.
#[test]
fn codec2_loss_falls_through_to_classical_plc() {
let (mut enc, mut dec) = encoder_decoder_pair(QualityProfile::CATASTROPHIC);
// Codec2 1200 uses 40 ms frames → 1920 samples at 48 kHz (before
// the downsample inside the codec). Encode 20 frames (~0.8 s).
let make_frame = |offset: usize| -> Vec<i16> {
(0..1920)
.map(|i| {
let t = (offset + i) as f64 / 48_000.0;
(8000.0 * (2.0 * std::f64::consts::PI * 300.0 * t).sin()) as i16
})
.collect()
};
for i in 0..20 {
let pcm = make_frame(i * 1920);
let packets = enc.encode_frame(&pcm).unwrap();
for pkt in packets {
// Drop every 5th source packet to simulate loss.
if !pkt.header.is_repair && i % 5 == 3 {
continue;
}
dec.ingest(pkt);
}
}
let mut out = vec![0i16; 1920];
while dec.decode_next(&mut out).is_some() {}
assert_eq!(
dec.dred_reconstructions, 0,
"Codec2 must never reconstruct via DRED"
);
// classical_plc_invocations may or may not trigger depending on
// whether the jitter buffer sees Missing before draining — the key
// assertion is that DRED is not used. PLC count is advisory.
}
// ---- QualityAdapter tests ----
/// Helper: build a QualityReport from human-readable loss% and RTT ms.

263
crates/wzp-client/src/cli.rs
View File

@@ -47,6 +47,11 @@ struct CliArgs {
room: Option<String>,
token: Option<String>,
_metrics_file: Option<String>,
version_check: bool,
/// Connect to relay for persistent signaling (direct calls).
signal: bool,
/// Place a direct call to a fingerprint (requires --signal).
call_target: Option<String>,
}
impl CliArgs {
@@ -88,12 +93,20 @@ fn parse_args() -> CliArgs {
let mut room = None;
let mut token = None;
let mut metrics_file = None;
let mut version_check = false;
let mut relay_str = None;
let mut signal = false;
let mut call_target = None;
let mut i = 1;
while i < args.len() {
match args[i].as_str() {
"--live" => live = true,
"--signal" => signal = true,
"--call" => {
i += 1;
call_target = Some(args.get(i).expect("--call requires a fingerprint").to_string());
}
"--send-tone" => {
i += 1;
send_tone_secs = Some(
@@ -169,6 +182,7 @@ fn parse_args() -> CliArgs {
);
}
"--sweep" => sweep = true,
"--version-check" => { version_check = true; }
"--help" | "-h" => {
eprintln!("Usage: wzp-client [options] [relay-addr]");
eprintln!();
@@ -221,6 +235,9 @@ fn parse_args() -> CliArgs {
room,
token,
_metrics_file: metrics_file,
version_check,
signal,
call_target,
}
}
@@ -239,6 +256,32 @@ async fn main() -> anyhow::Result<()> {
return Ok(());
}
// --version-check: query relay version over QUIC and exit
if cli.version_check {
let client_config = wzp_transport::client_config();
let bind_addr: SocketAddr = "0.0.0.0:0".parse()?;
let endpoint = wzp_transport::create_endpoint(bind_addr, None)?;
let conn = wzp_transport::connect(&endpoint, cli.relay_addr, "version", client_config).await?;
match conn.accept_uni().await {
Ok(mut recv) => {
let data = recv.read_to_end(256).await.unwrap_or_default();
let version = String::from_utf8_lossy(&data);
println!("{} {}", cli.relay_addr, version.trim());
}
Err(e) => {
eprintln!("relay {} does not support version query: {e}", cli.relay_addr);
}
}
endpoint.close(0u32.into(), b"done");
return Ok(());
}
// --signal mode: persistent signaling for direct calls
if cli.signal {
let seed = cli.resolve_seed();
return run_signal_mode(cli.relay_addr, seed, cli.token, cli.call_target).await;
}
let seed = cli.resolve_seed();
info!(
@@ -250,12 +293,11 @@ async fn main() -> anyhow::Result<()> {
"WarzonePhone client"
);
// Hash room name for SNI privacy (or "default" if none specified)
// Use raw room name as SNI (consistent with Android + Desktop clients for federation)
let sni = match &cli.room {
Some(name) => {
let hashed = wzp_crypto::hash_room_name(name);
info!(room = %name, hashed = %hashed, "room name hashed for SNI");
hashed
info!(room = %name, "using room name as SNI");
name.clone()
}
None => "default".to_string(),
};
@@ -274,6 +316,26 @@ async fn main() -> anyhow::Result<()> {
let transport = Arc::new(wzp_transport::QuinnTransport::new(connection));
// Register shutdown handler so SIGTERM/SIGINT always closes QUIC cleanly.
// Without this, killed clients leave zombie connections on the relay for ~30s.
{
let shutdown_transport = transport.clone();
tokio::spawn(async move {
let mut sigterm = tokio::signal::unix::signal(tokio::signal::unix::SignalKind::terminate())
.expect("failed to register SIGTERM handler");
let mut sigint = tokio::signal::unix::signal(tokio::signal::unix::SignalKind::interrupt())
.expect("failed to register SIGINT handler");
tokio::select! {
_ = sigterm.recv() => { info!("SIGTERM received, closing connection..."); }
_ = sigint.recv() => { info!("SIGINT received, closing connection..."); }
}
// Close the QUIC connection immediately (APPLICATION_CLOSE frame).
// Don't call process::exit — let the main task detect the closed
// connection and perform clean shutdown (e.g., save recordings).
shutdown_transport.connection().close(0u32.into(), b"shutdown");
});
}
// Send auth token if provided (relay with --auth-url expects this first)
if let Some(ref token) = cli.token {
let auth = wzp_proto::SignalMessage::AuthToken {
@@ -287,6 +349,7 @@ async fn main() -> anyhow::Result<()> {
let _crypto_session = wzp_client::handshake::perform_handshake(
&*transport,
&seed.0,
None, // alias — desktop client doesn't set one yet
).await?;
info!("crypto handshake complete");
@@ -623,3 +686,195 @@ async fn run_live(transport: Arc<wzp_transport::QuinnTransport>) -> anyhow::Resu
info!("done");
Ok(())
}
/// Persistent signaling mode for direct 1:1 calls.
async fn run_signal_mode(
relay_addr: SocketAddr,
seed: wzp_crypto::Seed,
token: Option<String>,
call_target: Option<String>,
) -> anyhow::Result<()> {
use wzp_proto::SignalMessage;
let identity = seed.derive_identity();
let pub_id = identity.public_identity();
let fp = pub_id.fingerprint.to_string();
let identity_pub = *pub_id.signing.as_bytes();
info!(fingerprint = %fp, "signal mode");
// Connect to relay with SNI "_signal"
let client_config = wzp_transport::client_config();
let bind_addr: SocketAddr = if relay_addr.is_ipv6() {
"[::]:0".parse()?
} else {
"0.0.0.0:0".parse()?
};
let endpoint = wzp_transport::create_endpoint(bind_addr, None)?;
let conn = wzp_transport::connect(&endpoint, relay_addr, "_signal", client_config).await?;
let transport = Arc::new(wzp_transport::QuinnTransport::new(conn));
info!("connected to relay (signal channel)");
// Auth if token provided
if let Some(ref tok) = token {
transport.send_signal(&SignalMessage::AuthToken { token: tok.clone() }).await?;
}
// Register presence (signature not verified in Phase 1)
transport.send_signal(&SignalMessage::RegisterPresence {
identity_pub,
signature: vec![], // Phase 1: not verified
alias: None,
}).await?;
// Wait for ack
match transport.recv_signal().await? {
Some(SignalMessage::RegisterPresenceAck { success: true, .. }) => {
info!(fingerprint = %fp, "registered on relay — waiting for calls");
}
Some(SignalMessage::RegisterPresenceAck { success: false, error }) => {
anyhow::bail!("registration failed: {}", error.unwrap_or_default());
}
other => {
anyhow::bail!("unexpected response: {other:?}");
}
}
// If --call specified, place the call
if let Some(ref target) = call_target {
info!(target = %target, "placing direct call...");
let call_id = format!("{:016x}", std::time::SystemTime::now()
.duration_since(std::time::UNIX_EPOCH).unwrap().as_nanos());
transport.send_signal(&SignalMessage::DirectCallOffer {
caller_fingerprint: fp.clone(),
caller_alias: None,
target_fingerprint: target.clone(),
call_id: call_id.clone(),
identity_pub,
ephemeral_pub: [0u8; 32], // Phase 1: not used for key exchange
signature: vec![],
supported_profiles: vec![wzp_proto::QualityProfile::GOOD],
}).await?;
}
// Signal recv loop — handle incoming signals
let signal_transport = transport.clone();
let relay = relay_addr;
let my_fp = fp.clone();
let my_seed = seed.0;
loop {
match signal_transport.recv_signal().await {
Ok(Some(msg)) => match msg {
SignalMessage::CallRinging { call_id } => {
info!(call_id = %call_id, "ringing...");
}
SignalMessage::DirectCallOffer { caller_fingerprint, caller_alias, call_id, .. } => {
info!(
from = %caller_fingerprint,
alias = ?caller_alias,
call_id = %call_id,
"incoming call — auto-accepting (generic)"
);
// Auto-accept for CLI testing
let _ = signal_transport.send_signal(&SignalMessage::DirectCallAnswer {
call_id,
accept_mode: wzp_proto::CallAcceptMode::AcceptGeneric,
identity_pub: Some(identity_pub),
ephemeral_pub: None,
signature: None,
chosen_profile: Some(wzp_proto::QualityProfile::GOOD),
}).await;
}
SignalMessage::DirectCallAnswer { call_id, accept_mode, .. } => {
info!(call_id = %call_id, mode = ?accept_mode, "call answered");
}
SignalMessage::CallSetup { call_id, room, relay_addr: setup_relay } => {
info!(call_id = %call_id, room = %room, relay = %setup_relay, "call setup — connecting to media room");
// Connect to the media room
let media_relay: SocketAddr = setup_relay.parse().unwrap_or(relay);
let media_cfg = wzp_transport::client_config();
match wzp_transport::connect(&endpoint, media_relay, &room, media_cfg).await {
Ok(media_conn) => {
let media_transport = Arc::new(wzp_transport::QuinnTransport::new(media_conn));
// Crypto handshake
match wzp_client::handshake::perform_handshake(&*media_transport, &my_seed, None).await {
Ok(_session) => {
info!("media connected — sending tone (press Ctrl+C to hang up)");
// Simple tone sender for testing
let mt = media_transport.clone();
let send_task = tokio::spawn(async move {
let config = wzp_client::call::CallConfig::default();
let mut encoder = wzp_client::call::CallEncoder::new(&config);
let duration = tokio::time::Duration::from_millis(20);
loop {
let pcm: Vec<i16> = (0..FRAME_SAMPLES)
.map(|_| 0i16) // silence — could be tone
.collect();
if let Ok(pkts) = encoder.encode_frame(&pcm) {
for pkt in &pkts {
if mt.send_media(pkt).await.is_err() { return; }
}
}
tokio::time::sleep(duration).await;
}
});
// Wait for hangup or ctrl+c
loop {
tokio::select! {
sig = signal_transport.recv_signal() => {
match sig {
Ok(Some(SignalMessage::Hangup { .. })) => {
info!("remote hung up");
break;
}
Ok(None) | Err(_) => break,
_ => {}
}
}
_ = tokio::signal::ctrl_c() => {
info!("hanging up...");
let _ = signal_transport.send_signal(&SignalMessage::Hangup {
reason: wzp_proto::HangupReason::Normal,
}).await;
break;
}
}
}
send_task.abort();
media_transport.close().await.ok();
info!("call ended");
}
Err(e) => error!("media handshake failed: {e}"),
}
}
Err(e) => error!("media connect failed: {e}"),
}
}
SignalMessage::Hangup { reason } => {
info!(reason = ?reason, "call ended by remote");
}
SignalMessage::Pong { .. } => {}
other => {
info!("signal: {:?}", std::mem::discriminant(&other));
}
},
Ok(None) => {
info!("signal connection closed");
break;
}
Err(e) => {
error!("signal error: {e}");
break;
}
}
}
transport.close().await.ok();
Ok(())
}

19
crates/wzp-client/src/featherchat.rs
View File

@@ -96,6 +96,7 @@ pub fn signal_to_call_type(signal: &SignalMessage) -> CallSignalType {
SignalMessage::Hangup { .. } => CallSignalType::Hangup,
SignalMessage::Rekey { .. } => CallSignalType::Offer, // reuse
SignalMessage::QualityUpdate { .. } => CallSignalType::Offer, // reuse
SignalMessage::LossRecoveryUpdate { .. } => CallSignalType::Offer, // reuse (telemetry)
SignalMessage::Ping { .. } | SignalMessage::Pong { .. } => CallSignalType::Offer,
SignalMessage::AuthToken { .. } => CallSignalType::Offer,
SignalMessage::Hold => CallSignalType::Hold,
@@ -104,12 +105,28 @@ pub fn signal_to_call_type(signal: &SignalMessage) -> CallSignalType {
SignalMessage::Unmute => CallSignalType::Unmute,
SignalMessage::Transfer { .. } => CallSignalType::Transfer,
SignalMessage::TransferAck => CallSignalType::Offer, // reuse
SignalMessage::PresenceUpdate { .. } => CallSignalType::Offer, // reuse
SignalMessage::RouteQuery { .. } => CallSignalType::Offer, // reuse
SignalMessage::RouteResponse { .. } => CallSignalType::Offer, // reuse
SignalMessage::SessionForward { .. } => CallSignalType::Offer, // reuse
SignalMessage::SessionForwardAck { .. } => CallSignalType::Offer, // reuse
SignalMessage::RoomUpdate { .. } => CallSignalType::Offer, // reuse
SignalMessage::FederationHello { .. }
| SignalMessage::GlobalRoomActive { .. }
| SignalMessage::GlobalRoomInactive { .. } => CallSignalType::Offer, // relay-only
SignalMessage::DirectCallOffer { .. } => CallSignalType::Offer,
SignalMessage::DirectCallAnswer { .. } => CallSignalType::Answer,
SignalMessage::CallSetup { .. } => CallSignalType::Offer, // relay-only
SignalMessage::CallRinging { .. } => CallSignalType::Ringing,
SignalMessage::RegisterPresence { .. }
| SignalMessage::RegisterPresenceAck { .. } => CallSignalType::Offer, // relay-only
}
}
#[cfg(test)]
mod tests {
use super::*;
use wzp_proto::QualityProfile;
#[test]
fn payload_roundtrip() {
@@ -118,6 +135,7 @@ mod tests {
ephemeral_pub: [2u8; 32],
signature: vec![3u8; 64],
supported_profiles: vec![QualityProfile::GOOD],
alias: None,
};
let encoded = encode_call_payload(&signal, Some("relay.example.com:4433"), Some("myroom"));
@@ -135,6 +153,7 @@ mod tests {
ephemeral_pub: [0; 32],
signature: vec![],
supported_profiles: vec![],
alias: None,
};
assert!(matches!(signal_to_call_type(&offer), CallSignalType::Offer));

5
crates/wzp-client/src/handshake.rs
View File

@@ -17,6 +17,7 @@ use wzp_proto::{MediaTransport, QualityProfile, SignalMessage};
pub async fn perform_handshake(
transport: &dyn MediaTransport,
seed: &[u8; 32],
alias: Option<&str>,
) -> Result<Box<dyn CryptoSession>, anyhow::Error> {
// 1. Create key exchange from identity seed
let mut kx = WarzoneKeyExchange::from_identity_seed(seed);
@@ -37,10 +38,14 @@ pub async fn perform_handshake(
ephemeral_pub,
signature,
supported_profiles: vec![
QualityProfile::STUDIO_64K,
QualityProfile::STUDIO_48K,
QualityProfile::STUDIO_32K,
QualityProfile::GOOD,
QualityProfile::DEGRADED,
QualityProfile::CATASTROPHIC,
],
alias: alias.map(|s| s.to_string()),
};
transport.send_signal(&offer).await?;

190
crates/wzp-client/tests/long_session.rs Normal file
View File

@@ -0,0 +1,190 @@
//! WZP-P2-T1-S5: 60-second long-session regression tests.
//!
//! Verifies that the full codec + FEC + jitter buffer pipeline does not drift
//! or degrade over a sustained 60-second (3000-frame) session. Runs entirely
//! in-process with no network — packets flow directly from encoder to decoder.
use wzp_client::call::{CallConfig, CallDecoder, CallEncoder};
use wzp_proto::QualityProfile;
const FRAME_SAMPLES: usize = 960; // 20ms @ 48kHz
const SAMPLE_RATE: f32 = 48_000.0;
const TOTAL_FRAMES: u64 = 3_000; // 60 seconds at 50 fps
/// Build a CallConfig tuned for direct-loopback testing (no network).
///
/// Disables silence suppression and noise suppression (which would mangle
/// or squelch the synthetic tone), uses a fixed (non-adaptive) jitter buffer
/// with min_depth=1 so that packets are played out as soon as they arrive.
fn test_config() -> CallConfig {
CallConfig {
profile: QualityProfile::GOOD,
jitter_target: 4,
jitter_max: 500,
jitter_min: 1,
suppression_enabled: false,
noise_suppression: false,
adaptive_jitter: false,
..Default::default()
}
}
/// Generate a 20ms frame of 440 Hz sine tone.
fn sine_frame(frame_offset: u64) -> Vec<i16> {
let start_sample = frame_offset * FRAME_SAMPLES as u64;
(0..FRAME_SAMPLES)
.map(|i| {
let t = (start_sample + i as u64) as f32 / SAMPLE_RATE;
(f32::sin(2.0 * std::f32::consts::PI * 440.0 * t) * 16000.0) as i16
})
.collect()
}
/// 60-second session with a perfect (lossless, in-order) channel.
///
/// Encodes 3000 frames of 440 Hz tone, feeds every packet directly into the
/// decoder, and verifies:
/// - frame loss < 5% (>2850 of 3000 source frames decoded or PLC'd)
/// - no panics
///
/// Note: the encoder shares a single sequence counter between source and
/// repair packets. Since repair packets are NOT pushed into the jitter
/// buffer, each FEC block creates a gap in the playout sequence. GOOD
/// profile (5 frames/block, fec_ratio=0.2) generates 1 repair per block,
/// so every 6th seq number is a "phantom" Missing in the jitter buffer.
/// The jitter buffer correctly fills these gaps with PLC. We call
/// `decode_next` once per encode tick; the buffer stays shallow because
/// PLC frames consume the phantom seqs at the same rate they're created.
#[test]
fn long_session_no_drift() {
let config = test_config();
let mut encoder = CallEncoder::new(&config);
let mut decoder = CallDecoder::new(&config);
let mut frames_decoded = 0u64;
let mut pcm_buf = vec![0i16; FRAME_SAMPLES];
for i in 0..TOTAL_FRAMES {
let pcm = sine_frame(i);
let packets = encoder.encode_frame(&pcm).expect("encode should not fail");
for pkt in packets {
decoder.ingest(pkt);
}
// Decode one frame per tick (mirrors real-time 50 fps cadence).
if decoder.decode_next(&mut pcm_buf).is_some() {
frames_decoded += 1;
}
}
let stats = decoder.stats();
println!(
"long_session_no_drift: decoded={frames_decoded}/{TOTAL_FRAMES}, \
underruns={}, overruns={}, depth={}, max_depth={}, late={}, lost={}",
stats.underruns, stats.overruns, stats.current_depth, stats.max_depth_seen,
stats.packets_late, stats.packets_lost,
);
// With 1 decode per tick over 3000 ticks, we expect ~3000 decoded frames
// (some via PLC for repair-seq gaps). Allow up to 5% gap.
assert!(
frames_decoded > 2850,
"frame loss too high: decoded {frames_decoded}/3000 (need >2850 = <5% loss)"
);
}
/// 60-second session with simulated 5% packet loss and reordering.
///
/// Every 20th source packet is dropped; pairs of adjacent packets are swapped
/// every 7 frames. Verifies that FEC + jitter buffer recover gracefully:
/// - frame loss < 10% (FEC should recover some of the 5% artificial loss)
/// - no panics
#[test]
fn long_session_with_simulated_loss() {
let config = test_config();
let mut encoder = CallEncoder::new(&config);
let mut decoder = CallDecoder::new(&config);
let mut frames_decoded = 0u64;
let mut pcm_buf = vec![0i16; FRAME_SAMPLES];
for i in 0..TOTAL_FRAMES {
let pcm = sine_frame(i);
let packets = encoder.encode_frame(&pcm).expect("encode should not fail");
let mut batch: Vec<_> = packets.into_iter().collect();
// Simulate reordering: swap first two packets in the batch every 7 frames.
if i % 7 == 0 && batch.len() >= 2 {
batch.swap(0, 1);
}
for (j, pkt) in batch.into_iter().enumerate() {
// Drop every 20th *source* (non-repair) packet to simulate ~5% loss.
if !pkt.header.is_repair && i % 20 == 0 && j == 0 {
continue; // drop this packet
}
decoder.ingest(pkt);
}
if decoder.decode_next(&mut pcm_buf).is_some() {
frames_decoded += 1;
}
}
let stats = decoder.stats();
println!(
"long_session_with_simulated_loss: decoded={frames_decoded}/{TOTAL_FRAMES}, \
underruns={}, overruns={}, depth={}, max_depth={}, late={}, lost={}",
stats.underruns, stats.overruns, stats.current_depth, stats.max_depth_seen,
stats.packets_late, stats.packets_lost,
);
// With 5% artificial loss + FEC recovery + PLC, we should still get >90% decoded.
assert!(
frames_decoded > 2700,
"frame loss too high under simulated loss: decoded {frames_decoded}/3000 (need >2700 = <10%)"
);
}
/// Verify that the jitter buffer's decoded-frame count is consistent with its
/// own internal statistics over a long session.
#[test]
fn long_session_stats_consistency() {
let config = test_config();
let mut encoder = CallEncoder::new(&config);
let mut decoder = CallDecoder::new(&config);
let mut frames_decoded = 0u64;
let mut pcm_buf = vec![0i16; FRAME_SAMPLES];
for i in 0..TOTAL_FRAMES {
let pcm = sine_frame(i);
let packets = encoder.encode_frame(&pcm).expect("encode");
for pkt in packets {
decoder.ingest(pkt);
}
if decoder.decode_next(&mut pcm_buf).is_some() {
frames_decoded += 1;
}
}
let stats = decoder.stats();
// total_decoded should match our manual counter.
assert_eq!(
stats.total_decoded, frames_decoded,
"stats.total_decoded ({}) != manually counted frames_decoded ({frames_decoded})",
stats.total_decoded,
);
// packets_received should be > 0.
assert!(
stats.packets_received > 0,
"stats.packets_received should be > 0"
);
}

13
crates/wzp-codec/Cargo.toml
View File

@@ -10,8 +10,17 @@ description = "WarzonePhone audio codec layer — Opus + Codec2 encoding/decodin
wzp-proto = { workspace = true }
tracing = { workspace = true }
# Opus bindings
audiopus = { workspace = true }
# Opus bindings — libopus 1.5.2.
# opusic-c for the encoder (set_dred_duration lives here in Phase 1).
# opusic-sys for the decoder — we wrap the raw *mut OpusDecoder ourselves
# because opusic-c::Decoder.inner is pub(crate), blocking the unified
# decoder + DRED path we need in Phase 3.
opusic-c = { workspace = true }
opusic-sys = { workspace = true }
# Zero-cost slice reinterpretation for the i16 ↔ u16 boundary between
# our PCM buffers and opusic-c's encode API.
bytemuck = { workspace = true }
# Pure-Rust Codec2 implementation
codec2 = { workspace = true }

33
crates/wzp-codec/src/adaptive.rs
View File

@@ -14,7 +14,7 @@ use crate::codec2_dec::Codec2Decoder;
use crate::codec2_enc::Codec2Encoder;
use crate::opus_dec::OpusDecoder;
use crate::opus_enc::OpusEncoder;
use crate::resample;
use crate::resample::{Downsampler48to8, Upsampler8to48};
// ─── Helpers ─────────────────────────────────────────────────────────────────
@@ -54,6 +54,7 @@ pub struct AdaptiveEncoder {
opus: OpusEncoder,
codec2: Codec2Encoder,
active: CodecId,
downsampler: Downsampler48to8,
}
impl AdaptiveEncoder {
@@ -66,6 +67,7 @@ impl AdaptiveEncoder {
opus,
codec2,
active: profile.codec,
downsampler: Downsampler48to8::new(),
})
}
}
@@ -74,7 +76,7 @@ impl AudioEncoder for AdaptiveEncoder {
fn encode(&mut self, pcm: &[i16], out: &mut [u8]) -> Result<usize, CodecError> {
if is_codec2(self.active) {
// Downsample 48 kHz → 8 kHz then encode via Codec2.
let pcm_8k = resample::resample_48k_to_8k(pcm);
let pcm_8k = self.downsampler.process(pcm);
self.codec2.encode(&pcm_8k, out)
} else {
self.opus.encode(pcm, out)
@@ -126,6 +128,7 @@ pub struct AdaptiveDecoder {
opus: OpusDecoder,
codec2: Codec2Decoder,
active: CodecId,
upsampler: Upsampler8to48,
}
impl AdaptiveDecoder {
@@ -138,6 +141,7 @@ impl AdaptiveDecoder {
opus,
codec2,
active: profile.codec,
upsampler: Upsampler8to48::new(),
})
}
}
@@ -149,7 +153,7 @@ impl AudioDecoder for AdaptiveDecoder {
let c2_samples = self.codec2_frame_samples();
let mut buf_8k = vec![0i16; c2_samples];
let n = self.codec2.decode(encoded, &mut buf_8k)?;
let pcm_48k = resample::resample_8k_to_48k(&buf_8k[..n]);
let pcm_48k = self.upsampler.process(&buf_8k[..n]);
let out_len = pcm_48k.len().min(pcm.len());
pcm[..out_len].copy_from_slice(&pcm_48k[..out_len]);
Ok(out_len)
@@ -163,7 +167,7 @@ impl AudioDecoder for AdaptiveDecoder {
let c2_samples = self.codec2_frame_samples();
let mut buf_8k = vec![0i16; c2_samples];
let n = self.codec2.decode_lost(&mut buf_8k)?;
let pcm_48k = resample::resample_8k_to_48k(&buf_8k[..n]);
let pcm_48k = self.upsampler.process(&buf_8k[..n]);
let out_len = pcm_48k.len().min(pcm.len());
pcm[..out_len].copy_from_slice(&pcm_48k[..out_len]);
Ok(out_len)
@@ -195,6 +199,27 @@ impl AdaptiveDecoder {
fn codec2_frame_samples(&self) -> usize {
self.codec2.frame_samples()
}
/// Reconstruct a lost frame from a previously parsed DRED state.
///
/// Phase 3b entry point for gap reconstruction. Dispatches to the
/// inner Opus decoder when active. Returns an error if the active
/// codec is Codec2 — DRED is libopus-only and has no Codec2 equivalent,
/// so callers must fall back to classical PLC on Codec2 tiers.
pub fn reconstruct_from_dred(
&mut self,
state: &crate::dred_ffi::DredState,
offset_samples: i32,
output: &mut [i16],
) -> Result<usize, CodecError> {
if is_codec2(self.active) {
return Err(CodecError::DecodeFailed(
"DRED reconstruction is Opus-only; Codec2 must use classical PLC".into(),
));
}
self.opus
.reconstruct_from_dred(state, offset_samples, output)
}
}
// ─── Tests ───────────────────────────────────────────────────────────────────

228
crates/wzp-codec/src/aec.rs Normal file
View File

@@ -0,0 +1,228 @@
//! Acoustic Echo Cancellation using NLMS adaptive filter.
//! Processes 480-sample (10ms) sub-frames at 48kHz.
/// NLMS (Normalized Least Mean Squares) adaptive filter echo canceller.
///
/// Removes acoustic echo by modelling the echo path between the far-end
/// (speaker) signal and the near-end (microphone) signal, then subtracting
/// the estimated echo from the near-end in real time.
pub struct EchoCanceller {
filter_coeffs: Vec<f32>,
filter_len: usize,
far_end_buf: Vec<f32>,
far_end_pos: usize,
mu: f32,
enabled: bool,
}
impl EchoCanceller {
/// Create a new echo canceller.
///
/// * `sample_rate` — typically 48000
/// * `filter_ms` — echo-tail length in milliseconds (e.g. 100 for 100 ms)
pub fn new(sample_rate: u32, filter_ms: u32) -> Self {
let filter_len = (sample_rate as usize) * (filter_ms as usize) / 1000;
Self {
filter_coeffs: vec![0.0f32; filter_len],
filter_len,
far_end_buf: vec![0.0f32; filter_len],
far_end_pos: 0,
mu: 0.01,
enabled: true,
}
}
/// Feed far-end (speaker/playback) samples into the circular buffer.
///
/// Must be called with the audio that was played out through the speaker
/// *before* the corresponding near-end frame is processed.
pub fn feed_farend(&mut self, farend: &[i16]) {
for &s in farend {
self.far_end_buf[self.far_end_pos] = s as f32;
self.far_end_pos = (self.far_end_pos + 1) % self.filter_len;
}
}
/// Process a near-end (microphone) frame, removing the estimated echo.
///
/// Returns the echo-return-loss enhancement (ERLE) as a ratio: the RMS of
/// the original near-end divided by the RMS of the residual. Values > 1.0
/// mean echo was reduced.
pub fn process_frame(&mut self, nearend: &mut [i16]) -> f32 {
if !self.enabled {
return 1.0;
}
let n = nearend.len();
let fl = self.filter_len;
let mut sum_near_sq: f64 = 0.0;
let mut sum_err_sq: f64 = 0.0;
for i in 0..n {
let near_f = nearend[i] as f32;
// --- estimate echo as dot(coeffs, farend_window) ---
// The far-end window for this sample starts at
// (far_end_pos - 1 - i) mod filter_len (most recent)
// and goes back filter_len samples.
let mut echo_est: f32 = 0.0;
let mut power: f32 = 0.0;
// Position of the most-recent far-end sample for this near-end sample.
// far_end_pos points to the *next write* position, so the most-recent
// sample written is at far_end_pos - 1. We have already called
// feed_farend for this block, so the relevant samples are the last
// filter_len entries ending just before the current write position,
// offset by how far we are into this near-end frame.
//
// For sample i of the near-end frame, the corresponding far-end
// "now" is far_end_pos - n + i (wrapping).
// far_end_pos points to next-write, so most recent sample is at
// far_end_pos - 1. For the i-th near-end sample we want the
// far-end "now" to be at (far_end_pos - n + i). We add fl
// repeatedly to avoid underflow on the usize subtraction.
let base = (self.far_end_pos + fl * ((n / fl) + 2) + i - n) % fl;
for k in 0..fl {
let fe_idx = (base + fl - k) % fl;
let fe = self.far_end_buf[fe_idx];
echo_est += self.filter_coeffs[k] * fe;
power += fe * fe;
}
let error = near_f - echo_est;
// --- NLMS coefficient update ---
let norm = power + 1.0; // +1 regularisation to avoid div-by-zero
let step = self.mu * error / norm;
for k in 0..fl {
let fe_idx = (base + fl - k) % fl;
let fe = self.far_end_buf[fe_idx];
self.filter_coeffs[k] += step * fe;
}
// Clamp output
let out = error.max(-32768.0).min(32767.0);
nearend[i] = out as i16;
sum_near_sq += (near_f as f64) * (near_f as f64);
sum_err_sq += (out as f64) * (out as f64);
}
// ERLE ratio
if sum_err_sq < 1.0 {
return 100.0; // near-perfect cancellation
}
(sum_near_sq / sum_err_sq).sqrt() as f32
}
/// Enable or disable echo cancellation.
pub fn set_enabled(&mut self, enabled: bool) {
self.enabled = enabled;
}
/// Returns whether echo cancellation is currently enabled.
pub fn is_enabled(&self) -> bool {
self.enabled
}
/// Reset the adaptive filter to its initial state.
///
/// Zeroes out all filter coefficients and the far-end circular buffer.
pub fn reset(&mut self) {
self.filter_coeffs.iter_mut().for_each(|c| *c = 0.0);
self.far_end_buf.iter_mut().for_each(|s| *s = 0.0);
self.far_end_pos = 0;
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn aec_creates_with_correct_filter_len() {
let aec = EchoCanceller::new(48000, 100);
assert_eq!(aec.filter_len, 4800);
assert_eq!(aec.filter_coeffs.len(), 4800);
assert_eq!(aec.far_end_buf.len(), 4800);
}
#[test]
fn aec_passthrough_when_disabled() {
let mut aec = EchoCanceller::new(48000, 100);
aec.set_enabled(false);
assert!(!aec.is_enabled());
let original: Vec<i16> = (0..480).map(|i| (i * 10) as i16).collect();
let mut frame = original.clone();
let erle = aec.process_frame(&mut frame);
assert_eq!(erle, 1.0);
assert_eq!(frame, original);
}
#[test]
fn aec_reset_zeroes_state() {
let mut aec = EchoCanceller::new(48000, 10); // short for test speed
let farend: Vec<i16> = (0..480).map(|i| ((i * 37) % 1000) as i16).collect();
aec.feed_farend(&farend);
aec.reset();
assert!(aec.filter_coeffs.iter().all(|&c| c == 0.0));
assert!(aec.far_end_buf.iter().all(|&s| s == 0.0));
assert_eq!(aec.far_end_pos, 0);
}
#[test]
fn aec_reduces_echo_of_known_signal() {
// Use a small filter for speed. Feed a known far-end signal, then
// present the *same* signal as near-end (perfect echo, no room).
// After adaptation the output energy should drop.
let filter_ms = 5; // 240 taps at 48 kHz
let mut aec = EchoCanceller::new(48000, filter_ms);
// Generate a simple repeating pattern.
let frame_len = 480usize;
let make_frame = |offset: usize| -> Vec<i16> {
(0..frame_len)
.map(|i| {
let t = (offset + i) as f64 / 48000.0;
(5000.0 * (2.0 * std::f64::consts::PI * 300.0 * t).sin()) as i16
})
.collect()
};
// Warm up the adaptive filter with several frames.
let mut last_erle = 1.0f32;
for frame_idx in 0..40 {
let farend = make_frame(frame_idx * frame_len);
aec.feed_farend(&farend);
// Near-end = exact copy of far-end (pure echo).
let mut nearend = farend.clone();
last_erle = aec.process_frame(&mut nearend);
}
// After 40 frames the ERLE should be meaningfully > 1.
assert!(
last_erle > 1.0,
"expected ERLE > 1.0 after adaptation, got {last_erle}"
);
}
#[test]
fn aec_silence_passthrough() {
let mut aec = EchoCanceller::new(48000, 10);
// Feed silence far-end
aec.feed_farend(&vec![0i16; 480]);
// Near-end is silence too
let mut frame = vec![0i16; 480];
let erle = aec.process_frame(&mut frame);
assert!(erle >= 1.0);
// Output should still be silence
assert!(frame.iter().all(|&s| s == 0));
}
}

219
crates/wzp-codec/src/agc.rs Normal file
View File

@@ -0,0 +1,219 @@
//! Automatic Gain Control (AGC) with two-stage smoothing.
//!
//! Uses a fast attack / slow release envelope follower to keep the
//! output signal near a configurable target RMS level. This prevents
//! both clipping (when the speaker is too loud) and inaudibility (when
//! the speaker is too quiet or far from the mic).
/// Two-stage automatic gain control.
///
/// The gain is adjusted per-frame based on the measured RMS energy,
/// with a fast attack (gain decreases quickly when signal gets louder)
/// and a slow release (gain increases gradually when signal gets quieter).
pub struct AutoGainControl {
target_rms: f64,
current_gain: f64,
min_gain: f64,
max_gain: f64,
attack_alpha: f64,
release_alpha: f64,
enabled: bool,
}
impl AutoGainControl {
/// Create a new AGC with sensible VoIP defaults.
pub fn new() -> Self {
Self {
target_rms: 3000.0, // ~-20 dBFS for i16
current_gain: 1.0,
min_gain: 0.5,
max_gain: 32.0,
attack_alpha: 0.3, // fast attack
release_alpha: 0.02, // slow release
enabled: true,
}
}
/// Process a frame of PCM audio in-place, applying gain adjustment.
pub fn process_frame(&mut self, pcm: &mut [i16]) {
if !self.enabled {
return;
}
// Compute RMS of the frame.
let rms = Self::compute_rms(pcm);
// Don't amplify near-silence — it would just boost noise.
if rms < 10.0 {
return;
}
// Desired instantaneous gain.
let desired_gain = (self.target_rms / rms).clamp(self.min_gain, self.max_gain);
// Smooth the gain transition.
let alpha = if desired_gain < self.current_gain {
// Signal is louder than target → reduce gain quickly (attack).
self.attack_alpha
} else {
// Signal is quieter than target → raise gain slowly (release).
self.release_alpha
};
self.current_gain = self.current_gain * (1.0 - alpha) + desired_gain * alpha;
// Apply gain to each sample with hard limiting at ±31000 (~0.946 * i16::MAX).
const LIMIT: f64 = 31000.0;
let gain = self.current_gain;
for sample in pcm.iter_mut() {
let amplified = (*sample as f64) * gain;
let clamped = amplified.clamp(-LIMIT, LIMIT);
*sample = clamped as i16;
}
}
/// Enable or disable the AGC.
pub fn set_enabled(&mut self, enabled: bool) {
self.enabled = enabled;
}
/// Returns whether the AGC is currently enabled.
pub fn is_enabled(&self) -> bool {
self.enabled
}
/// Current gain expressed in dB.
pub fn current_gain_db(&self) -> f64 {
20.0 * self.current_gain.log10()
}
/// Compute the RMS (root mean square) of a PCM buffer.
fn compute_rms(pcm: &[i16]) -> f64 {
if pcm.is_empty() {
return 0.0;
}
let sum_sq: f64 = pcm.iter().map(|&s| (s as f64) * (s as f64)).sum();
(sum_sq / pcm.len() as f64).sqrt()
}
}
impl Default for AutoGainControl {
fn default() -> Self {
Self::new()
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn agc_creates_with_defaults() {
let agc = AutoGainControl::new();
assert!(agc.is_enabled());
assert!((agc.current_gain - 1.0).abs() < f64::EPSILON);
}
#[test]
fn agc_passthrough_when_disabled() {
let mut agc = AutoGainControl::new();
agc.set_enabled(false);
let original: Vec<i16> = (0..960).map(|i| (i * 5) as i16).collect();
let mut frame = original.clone();
agc.process_frame(&mut frame);
assert_eq!(frame, original);
}
#[test]
fn agc_does_not_amplify_silence() {
let mut agc = AutoGainControl::new();
let mut frame = vec![0i16; 960];
agc.process_frame(&mut frame);
assert!(frame.iter().all(|&s| s == 0));
// Gain should remain at initial value.
assert!((agc.current_gain - 1.0).abs() < f64::EPSILON);
}
#[test]
fn agc_amplifies_quiet_signal() {
let mut agc = AutoGainControl::new();
// Very quiet signal (RMS ~ 50).
let mut frame: Vec<i16> = (0..960)
.map(|i| {
let t = i as f64 / 48000.0;
(50.0 * (2.0 * std::f64::consts::PI * 440.0 * t).sin()) as i16
})
.collect();
// Process several frames to let the gain ramp up.
for _ in 0..50 {
let mut f = frame.clone();
agc.process_frame(&mut f);
frame = f;
}
// Gain should have increased past 1.0.
assert!(
agc.current_gain > 1.05,
"expected gain > 1.05 for quiet signal, got {}",
agc.current_gain
);
}
#[test]
fn agc_attenuates_loud_signal() {
let mut agc = AutoGainControl::new();
// Loud signal (RMS ~ 20000).
let frame: Vec<i16> = (0..960)
.map(|i| {
let t = i as f64 / 48000.0;
(28000.0 * (2.0 * std::f64::consts::PI * 440.0 * t).sin()) as i16
})
.collect();
// Process several frames.
for _ in 0..20 {
let mut f = frame.clone();
agc.process_frame(&mut f);
}
// Gain should have decreased below 1.0.
assert!(
agc.current_gain < 1.0,
"expected gain < 1.0 for loud signal, got {}",
agc.current_gain
);
}
#[test]
fn agc_output_within_limits() {
let mut agc = AutoGainControl::new();
// Force a high gain by processing many quiet frames first.
for _ in 0..100 {
let mut f: Vec<i16> = vec![100; 960];
agc.process_frame(&mut f);
}
// Now send a louder frame — output should still be within ±31000.
let mut frame: Vec<i16> = vec![20000; 960];
agc.process_frame(&mut frame);
assert!(
frame.iter().all(|&s| s.abs() <= 31000),
"output samples must be within ±31000"
);
}
#[test]
fn agc_gain_db_at_unity() {
let agc = AutoGainControl::new();
let db = agc.current_gain_db();
assert!(
db.abs() < 0.01,
"expected ~0 dB at unity gain, got {db}"
);
}
}

585
crates/wzp-codec/src/dred_ffi.rs Normal file
View File

@@ -0,0 +1,585 @@
//! Raw opusic-sys FFI wrappers for libopus 1.5.2 decoder + DRED reconstruction.
//!
//! # Why this module exists
//!
//! We cannot use `opusic_c::Decoder` because its inner `*mut OpusDecoder`
//! pointer is `pub(crate)` — not reachable from outside the opusic-c crate.
//! Phase 3 of the DRED integration needs to hand that same pointer to
//! `opus_decoder_dred_decode`, and running two parallel decoders (one from
//! opusic-c for normal audio, another from opusic-sys for DRED) would cause
//! the DRED-only decoder's internal state to drift out of sync with the
//! audio stream because it would not see normal decode calls.
//!
//! The fix is to own the raw decoder ourselves and use the same handle for
//! both normal decode AND DRED reconstruction. This module is the single
//! owner of `*mut OpusDecoder`, `*mut OpusDREDDecoder`, and `*mut OpusDRED`
//! in the WZP workspace.
//!
//! # Phase 3a scope
//!
//! Phase 0 added `DecoderHandle` (normal decode). Phase 3a adds:
//! - [`DredDecoderHandle`] — wraps `*mut OpusDREDDecoder` for parsing DRED
//! side-channel data out of arriving Opus packets.
//! - [`DredState`] — wraps `*mut OpusDRED` (a fixed 10,592-byte buffer
//! allocated by libopus) that holds parsed DRED state between the parse
//! and reconstruct steps.
//! - [`DredDecoderHandle::parse_into`] — wraps `opus_dred_parse`.
//! - [`DecoderHandle::reconstruct_from_dred`] — wraps `opus_decoder_dred_decode`.
//!
//! The pattern is: on every arriving Opus packet, the receiver calls
//! `parse_into` with a reusable `DredState`, then stores (seq, state_clone)
//! in a ring. On detected loss, the receiver computes the offset from the
//! freshest reachable DRED state and calls `reconstruct_from_dred` to
//! synthesize the missing audio.
use std::ptr::NonNull;
use opusic_sys::{
OPUS_OK, OpusDRED, OpusDREDDecoder, OpusDecoder as RawOpusDecoder, opus_decode,
opus_decoder_create, opus_decoder_destroy, opus_decoder_dred_decode, opus_dred_alloc,
opus_dred_decoder_create, opus_dred_decoder_destroy, opus_dred_free, opus_dred_parse,
};
use wzp_proto::CodecError;
/// libopus operates at 48 kHz for all Opus variants we use.
const SAMPLE_RATE_HZ: i32 = 48_000;
/// Mono.
const CHANNELS: i32 = 1;
/// Safe owner of a `*mut OpusDecoder` allocated via `opus_decoder_create`.
///
/// Releases the decoder in `Drop`. All FFI access goes through `&mut self`
/// methods, so there is no aliasing or race. The raw pointer is exposed via
/// [`Self::as_raw_ptr`] at a crate-internal visibility for the future Phase 3
/// DRED reconstruction path — external crates cannot reach it.
pub struct DecoderHandle {
inner: NonNull<RawOpusDecoder>,
}
impl DecoderHandle {
/// Allocate a new Opus decoder at 48 kHz mono.
pub fn new() -> Result<Self, CodecError> {
let mut error: i32 = OPUS_OK;
// SAFETY: opus_decoder_create writes to `error` and returns either a
// valid heap pointer or null. We check both before constructing the
// NonNull wrapper.
let ptr = unsafe { opus_decoder_create(SAMPLE_RATE_HZ, CHANNELS, &mut error) };
if error != OPUS_OK {
// Even if ptr is non-null on error, libopus contracts guarantee
// it is unusable — do not attempt to free it.
return Err(CodecError::DecodeFailed(format!(
"opus_decoder_create failed: err={error}"
)));
}
let inner = NonNull::new(ptr).ok_or_else(|| {
CodecError::DecodeFailed("opus_decoder_create returned null".into())
})?;
Ok(Self { inner })
}
/// Decode an Opus packet into PCM samples.
///
/// `pcm` must have enough capacity for the frame (960 for 20 ms, 1920
/// for 40 ms at 48 kHz mono). Returns the number of decoded samples
/// per channel — for mono streams this equals the total sample count.
pub fn decode(&mut self, packet: &[u8], pcm: &mut [i16]) -> Result<usize, CodecError> {
if packet.is_empty() {
return Err(CodecError::DecodeFailed("empty packet".into()));
}
if pcm.is_empty() {
return Err(CodecError::DecodeFailed("empty output buffer".into()));
}
// SAFETY: self.inner is a valid *mut OpusDecoder owned by this struct.
// `data` / `pcm` are live Rust slices, so their pointers and lengths
// are valid for the duration of the call. libopus reads len bytes
// from data and writes up to frame_size samples (per channel) to pcm.
let n = unsafe {
opus_decode(
self.inner.as_ptr(),
packet.as_ptr(),
packet.len() as i32,
pcm.as_mut_ptr(),
pcm.len() as i32,
/* decode_fec = */ 0,
)
};
if n < 0 {
return Err(CodecError::DecodeFailed(format!(
"opus_decode failed: err={n}"
)));
}
Ok(n as usize)
}
/// Generate packet-loss concealment audio for a missing frame.
///
/// Implemented via `opus_decode` with a null data pointer, per the
/// libopus API contract. `pcm` should be sized for the expected frame.
pub fn decode_lost(&mut self, pcm: &mut [i16]) -> Result<usize, CodecError> {
if pcm.is_empty() {
return Err(CodecError::DecodeFailed("empty output buffer".into()));
}
// SAFETY: same invariants as decode(). libopus documents that passing
// a null data pointer with len=0 triggers PLC synthesis into pcm.
let n = unsafe {
opus_decode(
self.inner.as_ptr(),
std::ptr::null(),
0,
pcm.as_mut_ptr(),
pcm.len() as i32,
/* decode_fec = */ 0,
)
};
if n < 0 {
return Err(CodecError::DecodeFailed(format!(
"opus_decode PLC failed: err={n}"
)));
}
Ok(n as usize)
}
/// Reconstruct audio from a `DredState` into the `output` buffer.
///
/// `offset_samples` is the sample position (positive, measured backward
/// from the packet anchor that produced `state`) where reconstruction
/// begins. `output.len()` must match the number of samples to synthesize.
///
/// The libopus API: `opus_decoder_dred_decode(st, dred, dred_offset, pcm,
/// frame_size)` where `dred_offset` is "position of the redundancy to
/// decode, in samples before the beginning of the real audio data in the
/// packet." Valid values: `0 < offset_samples < state.samples_available()`.
///
/// Returns the number of samples actually written (should equal
/// `output.len()` on success).
pub fn reconstruct_from_dred(
&mut self,
state: &DredState,
offset_samples: i32,
output: &mut [i16],
) -> Result<usize, CodecError> {
if output.is_empty() {
return Err(CodecError::DecodeFailed(
"empty reconstruction output buffer".into(),
));
}
if offset_samples <= 0 {
return Err(CodecError::DecodeFailed(format!(
"DRED offset must be positive (got {offset_samples})"
)));
}
if offset_samples > state.samples_available() {
return Err(CodecError::DecodeFailed(format!(
"DRED offset {offset_samples} exceeds available samples {}",
state.samples_available()
)));
}
// SAFETY: self.inner is a valid *mut OpusDecoder, state.inner is a
// valid *const OpusDRED populated by a prior parse_into call, and
// output is a live mutable slice. libopus reads from dred and writes
// exactly frame_size samples (the output.len()) to pcm.
let n = unsafe {
opus_decoder_dred_decode(
self.inner.as_ptr(),
state.inner.as_ptr(),
offset_samples,
output.as_mut_ptr(),
output.len() as i32,
)
};
if n < 0 {
return Err(CodecError::DecodeFailed(format!(
"opus_decoder_dred_decode failed: err={n}"
)));
}
Ok(n as usize)
}
}
impl Drop for DecoderHandle {
fn drop(&mut self) {
// SAFETY: we own the pointer and no further access happens after
// this call because Drop consumes self.
unsafe { opus_decoder_destroy(self.inner.as_ptr()) };
}
}
// SAFETY: The underlying OpusDecoder is a plain heap allocation with no
// thread-local or lock-free state. It is safe to move between threads
// (Send), and all method access is gated by &mut self so Rust's borrow
// checker prevents simultaneous access from multiple threads (Sync).
unsafe impl Send for DecoderHandle {}
unsafe impl Sync for DecoderHandle {}
// ─── DRED decoder (parser) ──────────────────────────────────────────────────
/// Safe owner of a `*mut OpusDREDDecoder` allocated via
/// `opus_dred_decoder_create`.
///
/// The DRED decoder is a **separate** libopus object from the regular
/// `OpusDecoder`. It's used exclusively for parsing DRED side-channel data
/// out of arriving Opus packets via [`Self::parse_into`]. Actual audio
/// reconstruction from the parsed state uses the regular `DecoderHandle`
/// via [`DecoderHandle::reconstruct_from_dred`].
pub struct DredDecoderHandle {
inner: NonNull<OpusDREDDecoder>,
}
impl DredDecoderHandle {
/// Allocate a new DRED decoder.
pub fn new() -> Result<Self, CodecError> {
let mut error: i32 = OPUS_OK;
// SAFETY: opus_dred_decoder_create writes to `error` and returns
// either a valid heap pointer or null. Both are checked.
let ptr = unsafe { opus_dred_decoder_create(&mut error) };
if error != OPUS_OK {
return Err(CodecError::DecodeFailed(format!(
"opus_dred_decoder_create failed: err={error}"
)));
}
let inner = NonNull::new(ptr).ok_or_else(|| {
CodecError::DecodeFailed("opus_dred_decoder_create returned null".into())
})?;
Ok(Self { inner })
}
/// Parse DRED side-channel data from an Opus packet into `state`.
///
/// Returns the number of samples of audio history available for
/// reconstruction, or 0 if the packet carries no DRED data. Subsequent
/// `DecoderHandle::reconstruct_from_dred` calls using this `state` can
/// reconstruct any sample position in `(0, samples_available]`.
///
/// libopus API: `opus_dred_parse(dred_dec, dred, data, len,
/// max_dred_samples, sampling_rate, dred_end, defer_processing)`. We
/// pass `max_dred_samples = 48000` (1 s at 48 kHz, the DRED maximum),
/// `sampling_rate = 48000`, `defer_processing = 0` (process immediately).
/// The `dred_end` output is the silence gap at the tail of the DRED
/// window; we subtract it from the total offset to give callers the
/// truly usable sample count.
pub fn parse_into(
&mut self,
state: &mut DredState,
packet: &[u8],
) -> Result<i32, CodecError> {
if packet.is_empty() {
state.samples_available = 0;
return Ok(0);
}
let mut dred_end: i32 = 0;
// SAFETY: self.inner is a valid *mut OpusDREDDecoder; state.inner is
// a valid *mut OpusDRED allocated via opus_dred_alloc; packet is a
// live slice; dred_end is a stack int. libopus reads packet bytes
// and writes parsed DRED state into *state.inner.
let ret = unsafe {
opus_dred_parse(
self.inner.as_ptr(),
state.inner.as_ptr(),
packet.as_ptr(),
packet.len() as i32,
/* max_dred_samples = */ 48_000, // 1s max per libopus 1.5
/* sampling_rate = */ 48_000,
&mut dred_end,
/* defer_processing = */ 0,
)
};
if ret < 0 {
state.samples_available = 0;
return Err(CodecError::DecodeFailed(format!(
"opus_dred_parse failed: err={ret}"
)));
}
// ret is the positive offset of the first decodable DRED sample,
// or 0 if no DRED is present. dred_end is the silence gap at the
// tail. The usable sample range is (dred_end, ret], so the count
// of usable samples is ret - dred_end. We store `ret` as the max
// usable offset — callers should pass dred_offset values in the
// range (dred_end, ret] to reconstruct_from_dred. For simplicity
// we expose just samples_available = ret and let callers treat
// the full window as valid (the silence gap is small and libopus
// handles minor boundary cases gracefully).
state.samples_available = ret;
Ok(ret)
}
}
impl Drop for DredDecoderHandle {
fn drop(&mut self) {
// SAFETY: we own the pointer and no further access happens after
// this call because Drop consumes self.
unsafe { opus_dred_decoder_destroy(self.inner.as_ptr()) };
}
}
// SAFETY: same reasoning as DecoderHandle — heap allocation with no
// thread-local state, &mut self access discipline prevents races.
unsafe impl Send for DredDecoderHandle {}
unsafe impl Sync for DredDecoderHandle {}
// ─── DRED state buffer ──────────────────────────────────────────────────────
/// Safe owner of a `*mut OpusDRED` allocated via `opus_dred_alloc`.
///
/// Holds a fixed-size (10,592-byte per libopus 1.5) buffer that
/// `DredDecoderHandle::parse_into` populates from an Opus packet. The state
/// is reusable — the caller can call `parse_into` again on the same
/// `DredState` to overwrite it with a fresh packet's data.
///
/// `samples_available` tracks the last-parsed result so reconstruction
/// callers don't need to thread the return value separately. A fresh
/// state (before any `parse_into`) has `samples_available == 0`.
pub struct DredState {
inner: NonNull<OpusDRED>,
samples_available: i32,
}
impl DredState {
/// Allocate a new DRED state buffer.
pub fn new() -> Result<Self, CodecError> {
let mut error: i32 = OPUS_OK;
// SAFETY: opus_dred_alloc writes to `error` and returns either a
// valid heap pointer or null.
let ptr = unsafe { opus_dred_alloc(&mut error) };
if error != OPUS_OK {
return Err(CodecError::DecodeFailed(format!(
"opus_dred_alloc failed: err={error}"
)));
}
let inner = NonNull::new(ptr)
.ok_or_else(|| CodecError::DecodeFailed("opus_dred_alloc returned null".into()))?;
Ok(Self {
inner,
samples_available: 0,
})
}
/// How many samples of audio history this state currently covers.
///
/// Returns 0 if the state is fresh or the last parse found no DRED
/// data. Otherwise returns the positive offset set by the most recent
/// `DredDecoderHandle::parse_into` call — the maximum valid
/// `offset_samples` value for `DecoderHandle::reconstruct_from_dred`.
pub fn samples_available(&self) -> i32 {
self.samples_available
}
/// Reset the state to "fresh" without freeing the underlying buffer.
/// The next `parse_into` will overwrite the contents.
pub fn reset(&mut self) {
self.samples_available = 0;
}
}
impl Drop for DredState {
fn drop(&mut self) {
// SAFETY: we own the pointer and no further access happens after
// this call because Drop consumes self.
unsafe { opus_dred_free(self.inner.as_ptr()) };
}
}
// SAFETY: same reasoning as DecoderHandle.
unsafe impl Send for DredState {}
unsafe impl Sync for DredState {}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn decoder_handle_creates_and_drops() {
let handle = DecoderHandle::new().expect("decoder create");
// Dropping the handle must not panic or leak — validated by miri
// and the absence of sanitizer complaints in CI.
drop(handle);
}
#[test]
fn decode_lost_produces_full_frame_of_silence_on_cold_start() {
let mut handle = DecoderHandle::new().unwrap();
// 20 ms @ 48 kHz mono.
let mut pcm = vec![0i16; 960];
let n = handle.decode_lost(&mut pcm).unwrap();
assert_eq!(n, 960);
// On a fresh decoder, PLC output is silence (no past audio to extend).
assert!(pcm.iter().all(|&s| s == 0));
}
#[test]
fn decode_empty_packet_errors() {
let mut handle = DecoderHandle::new().unwrap();
let mut pcm = vec![0i16; 960];
let err = handle.decode(&[], &mut pcm);
assert!(err.is_err());
}
// ─── Phase 3a — DRED decoder + state ────────────────────────────────────
#[test]
fn dred_decoder_handle_creates_and_drops() {
let h = DredDecoderHandle::new().expect("dred decoder create");
drop(h);
}
#[test]
fn dred_state_creates_and_drops() {
let s = DredState::new().expect("dred state alloc");
assert_eq!(s.samples_available(), 0);
drop(s);
}
#[test]
fn dred_state_reset_zeroes_counter() {
let mut s = DredState::new().unwrap();
s.samples_available = 480; // pretend a parse populated it
assert_eq!(s.samples_available(), 480);
s.reset();
assert_eq!(s.samples_available(), 0);
}
/// Phase 3a end-to-end: encode a DRED-enabled stream, parse state out
/// of packets, and reconstruct audio at a past offset. Validates the
/// full parse → reconstruct pipeline against a real libopus 1.5.2
/// encoder so we catch FFI-layer bugs early.
#[test]
fn dred_parse_and_reconstruct_roundtrip() {
use crate::opus_enc::OpusEncoder;
use wzp_proto::{AudioEncoder, QualityProfile};
// Encoder with DRED at Opus 24k / 200 ms duration (Phase 1 default
// for GOOD profile). The loss floor is 5% per Phase 1.
let mut enc = OpusEncoder::new(QualityProfile::GOOD).unwrap();
// Decode-side handles.
let mut dec = DecoderHandle::new().unwrap();
let mut dred_dec = DredDecoderHandle::new().unwrap();
let mut state = DredState::new().unwrap();
// Generate 60 frames (1.2 s) of a voice-like 300 Hz sine wave so
// the encoder's DRED emitter has real content to encode rather
// than compressing silence.
let frame_len = 960usize; // 20 ms @ 48 kHz
let make_frame = |offset: usize| -> Vec<i16> {
(0..frame_len)
.map(|i| {
let t = (offset + i) as f64 / 48_000.0;
(8000.0 * (2.0 * std::f64::consts::PI * 300.0 * t).sin()) as i16
})
.collect()
};
// Track the freshest packet that carried non-zero DRED state.
let mut best_samples_available = 0;
let mut best_packet: Option<Vec<u8>> = None;
for frame_idx in 0..60 {
let pcm = make_frame(frame_idx * frame_len);
let mut encoded = vec![0u8; 512];
let n = enc.encode(&pcm, &mut encoded).unwrap();
encoded.truncate(n);
// Run the packet through the normal decode path so dec's
// internal state mirrors the full stream — this is necessary
// for DRED reconstruction to produce meaningful output.
let mut decoded = vec![0i16; frame_len];
dec.decode(&encoded, &mut decoded).unwrap();
// Parse DRED state out of the same packet. Early packets may
// have samples_available == 0 while the DRED encoder warms up;
// later packets should carry the full window.
match dred_dec.parse_into(&mut state, &encoded) {
Ok(available) => {
if available > best_samples_available {
best_samples_available = available;
best_packet = Some(encoded.clone());
}
}
Err(e) => panic!("parse_into errored unexpectedly: {e:?}"),
}
}
// By the time we're 60 frames in, DRED should have emitted data.
assert!(
best_samples_available > 0,
"DRED emitted zero samples across 60 frames — the encoder isn't \
producing DRED bytes (check set_dred_duration and packet_loss floor)"
);
// Parse the best packet into a fresh state and reconstruct some
// audio from somewhere inside its DRED window. We use frame_len/2
// as the offset to pick a point squarely inside the reconstructable
// range rather than at an edge.
let packet = best_packet.expect("at least one packet had DRED state");
let mut fresh_state = DredState::new().unwrap();
let available = dred_dec.parse_into(&mut fresh_state, &packet).unwrap();
assert!(available > 0, "re-parse of known-good packet returned 0");
// Need a decoder that's in the right state to reconstruct — rewind
// by creating a fresh one and feeding it the same stream up to the
// point of the best packet. Simpler: just use a fresh decoder and
// accept that the reconstructed samples may not be phase-matched.
// The test here only asserts *non-silent energy*, not signal fidelity.
let mut recon_dec = DecoderHandle::new().unwrap();
// Warm up the decoder with one frame so its internal state is valid.
let warmup_pcm = vec![0i16; frame_len];
let warmup_encoded = {
let mut warmup_enc = OpusEncoder::new(QualityProfile::GOOD).unwrap();
let mut buf = vec![0u8; 512];
let n = warmup_enc.encode(&warmup_pcm, &mut buf).unwrap();
buf.truncate(n);
buf
};
let mut throwaway = vec![0i16; frame_len];
let _ = recon_dec.decode(&warmup_encoded, &mut throwaway);
// Reconstruct 20 ms from some position inside the DRED window.
let offset = (available / 2).max(480).min(available);
let mut recon_pcm = vec![0i16; frame_len];
let n = recon_dec
.reconstruct_from_dred(&fresh_state, offset, &mut recon_pcm)
.expect("reconstruct_from_dred failed");
assert_eq!(n, frame_len);
// Energy check: reconstructed audio should not be all zeros. A
// loose threshold — the DRED reconstruction won't be phase-matched
// to our sine wave because we fed a cold decoder only one warmup
// frame, but it should still produce non-silent speech-like output
// since the DRED state was parsed from real speech content.
let energy: u64 = recon_pcm.iter().map(|&s| (s as i32).unsigned_abs() as u64).sum();
assert!(
energy > 0,
"reconstructed audio has zero total energy — DRED reconstruction produced silence"
);
}
/// A second roundtrip variant: offset too large errors cleanly rather
/// than crashing the FFI.
#[test]
fn reconstruct_with_out_of_range_offset_errors() {
let mut dec = DecoderHandle::new().unwrap();
let state = DredState::new().unwrap();
// state has samples_available == 0 (fresh), so any positive offset
// should be out of range.
let mut out = vec![0i16; 960];
let err = dec.reconstruct_from_dred(&state, 480, &mut out);
assert!(err.is_err());
}
#[test]
fn reconstruct_with_zero_offset_errors() {
let mut dec = DecoderHandle::new().unwrap();
let state = DredState::new().unwrap();
let mut out = vec![0i16; 960];
let err = dec.reconstruct_from_dred(&state, 0, &mut out);
assert!(err.is_err());
}
#[test]
fn dred_parse_empty_packet_returns_zero() {
let mut dred_dec = DredDecoderHandle::new().unwrap();
let mut state = DredState::new().unwrap();
let result = dred_dec.parse_into(&mut state, &[]).unwrap();
assert_eq!(result, 0);
assert_eq!(state.samples_available(), 0);
}
}

5
crates/wzp-codec/src/lib.rs
View File

@@ -10,15 +10,20 @@
//! trait-object encoders/decoders that handle adaptive switching internally.
pub mod adaptive;
pub mod aec;
pub mod agc;
pub mod codec2_dec;
pub mod codec2_enc;
pub mod denoise;
pub mod dred_ffi;
pub mod opus_dec;
pub mod opus_enc;
pub mod resample;
pub mod silence;
pub use adaptive::{AdaptiveDecoder, AdaptiveEncoder};
pub use aec::EchoCanceller;
pub use agc::AutoGainControl;
pub use denoise::NoiseSupressor;
pub use silence::{ComfortNoise, SilenceDetector};
pub use wzp_proto::{AudioDecoder, AudioEncoder, CodecId, QualityProfile};

68
crates/wzp-codec/src/opus_dec.rs
View File

@@ -1,30 +1,32 @@
//! Opus decoder wrapping the `audiopus` crate.
//! Opus decoder built on top of the raw opusic-sys `DecoderHandle`.
//!
//! Phase 0 of the DRED integration: we went straight to a custom
//! `DecoderHandle` instead of `opusic_c::Decoder` because the latter's
//! inner pointer is `pub(crate)` and we need to reach it in Phase 3 for
//! `opus_decoder_dred_decode`. See `dred_ffi.rs` for the rationale and
//! `docs/PRD-dred-integration.md` for the full plan.
use audiopus::coder::Decoder;
use audiopus::{Channels, MutSignals, SampleRate};
use audiopus::packet::Packet;
use crate::dred_ffi::{DecoderHandle, DredState};
use wzp_proto::{AudioDecoder, CodecError, CodecId, QualityProfile};
/// Opus decoder implementing `AudioDecoder`.
/// Opus decoder implementing [`AudioDecoder`].
///
/// Operates at 48 kHz mono output.
/// Operates at 48 kHz mono output. 20 ms and 40 ms frames supported via
/// the active `QualityProfile`. Behavior is intentionally identical to
/// the pre-swap audiopus-based decoder at this phase — DRED reconstruction
/// lands in Phase 3.
pub struct OpusDecoder {
inner: Decoder,
inner: DecoderHandle,
codec_id: CodecId,
frame_duration_ms: u8,
}
// SAFETY: Same reasoning as OpusEncoder — exclusive access via &mut self.
unsafe impl Sync for OpusDecoder {}
impl OpusDecoder {
/// Create a new Opus decoder for the given quality profile.
pub fn new(profile: QualityProfile) -> Result<Self, CodecError> {
let decoder = Decoder::new(SampleRate::Hz48000, Channels::Mono)
.map_err(|e| CodecError::DecodeFailed(format!("opus decoder init: {e}")))?;
let inner = DecoderHandle::new()?;
Ok(Self {
inner: decoder,
inner,
codec_id: profile.codec,
frame_duration_ms: profile.frame_duration_ms,
})
@@ -34,6 +36,24 @@ impl OpusDecoder {
pub fn frame_samples(&self) -> usize {
(48_000 * self.frame_duration_ms as usize) / 1000
}
/// Reconstruct a lost frame from a previously parsed `DredState`.
///
/// Phase 3b entry point: callers (CallDecoder / engine.rs) use this to
/// synthesize audio for gaps detected by the jitter buffer when DRED
/// side-channel state from a later-arriving packet covers the gap's
/// sample offset. `offset_samples` is measured backward from the anchor
/// packet that produced `state`. See `DecoderHandle::reconstruct_from_dred`
/// for the full semantics.
pub fn reconstruct_from_dred(
&mut self,
state: &DredState,
offset_samples: i32,
output: &mut [i16],
) -> Result<usize, CodecError> {
self.inner
.reconstruct_from_dred(state, offset_samples, output)
}
}
impl AudioDecoder for OpusDecoder {
@@ -45,15 +65,7 @@ impl AudioDecoder for OpusDecoder {
pcm.len()
)));
}
let packet = Packet::try_from(encoded)
.map_err(|e| CodecError::DecodeFailed(format!("invalid packet: {e}")))?;
let signals = MutSignals::try_from(pcm)
.map_err(|e| CodecError::DecodeFailed(format!("output signals: {e}")))?;
let n = self
.inner
.decode(Some(packet), signals, false)
.map_err(|e| CodecError::DecodeFailed(format!("opus decode: {e}")))?;
Ok(n)
self.inner.decode(encoded, pcm)
}
fn decode_lost(&mut self, pcm: &mut [i16]) -> Result<usize, CodecError> {
@@ -64,13 +76,7 @@ impl AudioDecoder for OpusDecoder {
pcm.len()
)));
}
let signals = MutSignals::try_from(pcm)
.map_err(|e| CodecError::DecodeFailed(format!("output signals: {e}")))?;
let n = self
.inner
.decode(None, signals, false)
.map_err(|e| CodecError::DecodeFailed(format!("opus PLC: {e}")))?;
Ok(n)
self.inner.decode_lost(pcm)
}
fn codec_id(&self) -> CodecId {
@@ -79,7 +85,7 @@ impl AudioDecoder for OpusDecoder {
fn set_profile(&mut self, profile: QualityProfile) -> Result<(), CodecError> {
match profile.codec {
CodecId::Opus24k | CodecId::Opus16k | CodecId::Opus6k => {
c if c.is_opus() => {
self.codec_id = profile.codec;
self.frame_duration_ms = profile.frame_duration_ms;
Ok(())

420
crates/wzp-codec/src/opus_enc.rs
View File

@@ -1,53 +1,199 @@
//! Opus encoder wrapping the `audiopus` crate.
//! Opus encoder wrapping the `opusic-c` crate (libopus 1.5.2).
//!
//! Phase 1 of the DRED integration: encoder-side DRED is enabled on every
//! Opus profile with a tiered duration (studio 100 ms / normal 200 ms /
//! degraded 500 ms), and Opus inband FEC (LBRR) is disabled because DRED
//! is the stronger mechanism for the same failure mode. The legacy behavior
//! is preserved behind the `AUDIO_USE_LEGACY_FEC` environment variable as a
//! runtime escape hatch for rollout. See `docs/PRD-dred-integration.md`.
//!
//! # DRED duration policy
//!
//! Rationale from the PRD:
//! - Studio tiers (Opus 32k/48k/64k): 100 ms — loss is rare on high-quality
//! networks; short window keeps decoder CPU modest.
//! - Normal tiers (Opus 16k/24k): 200 ms — balanced baseline covering common
//! VoIP loss patterns (20–150 ms bursts from wifi roam, transient congestion).
//! - Degraded tier (Opus 6k): 500 ms — users on 6k are by definition on a
//! bad link; longer DRED buys maximum burst resilience where it matters.
//!
//! # Why the 15% packet loss floor
//!
//! libopus 1.5's DRED emitter is gated on `OPUS_SET_PACKET_LOSS_PERC` and
//! scales the emitted window proportionally to the assumed loss:
//!
//! ```text
//! loss_pct samples_available effective_ms
//! 5% 720 15
//! 10% 2640 55
//! 15% 4560 95
//! 20% 6480 135
//! 25%+ 8400 (capped) 175 (≈ 87% of the 200ms configured max)
//! ```
//!
//! Measured empirically against libopus 1.5.2 on Opus 24k / 200 ms DRED
//! duration during Phase 3b. At 5% loss the window is only 15 ms — too
//! small to even reconstruct a single 20 ms Opus frame. 15% gives 95 ms
//! (enough for single-frame recovery plus modest burst margin) while
//! keeping the bitrate overhead modest compared to 25%. Real measurements
//! from the quality adapter override upward when loss exceeds the floor.
use audiopus::coder::Encoder;
use audiopus::{Application, Bitrate, Channels, SampleRate, Signal};
use tracing::debug;
use opusic_c::{Application, Bitrate, Channels, Encoder, InbandFec, SampleRate, Signal};
use tracing::{debug, warn};
use wzp_proto::{AudioEncoder, CodecError, CodecId, QualityProfile};
/// Minimum `OPUS_SET_PACKET_LOSS_PERC` value used in DRED mode. libopus
/// scales the DRED emission window with the assumed loss percentage:
/// empirically, 5% gives a 15 ms window (useless), 10% gives 55 ms, 15%
/// gives 95 ms, and 25%+ saturates the configured max (~175 ms at 200 ms
/// duration). 15% is the minimum value that produces a DRED window larger
/// than a single 20 ms frame, making it the minimum floor that actually
/// gives DRED something useful to reconstruct. Real loss measurements from
/// the quality adapter override this upward.
const DRED_LOSS_FLOOR_PCT: u8 = 15;
/// Environment variable that reverts Phase 1 behavior to Phase 0 (inband FEC
/// on, DRED off, no loss floor). Read once per encoder construction.
const LEGACY_FEC_ENV: &str = "AUDIO_USE_LEGACY_FEC";
/// Returns the DRED duration in 10 ms frame units for a given Opus codec.
///
/// Unit: each frame is 10 ms, so the max value of 104 corresponds to 1040 ms
/// of reconstructable history. Returns 0 for non-Opus codecs (DRED is not
/// emitted by the libopus encoder in that case anyway, but we avoid a
/// pointless FFI call).
///
/// See the DRED duration policy in the module docs for per-tier rationale.
pub fn dred_duration_for(codec: CodecId) -> u8 {
match codec {
// Studio tiers — loss is rare, short window.
CodecId::Opus32k | CodecId::Opus48k | CodecId::Opus64k => 10,
// Normal tiers — balanced baseline.
CodecId::Opus16k | CodecId::Opus24k => 20,
// Degraded tier — maximum burst resilience.
CodecId::Opus6k => 50,
// Non-Opus (Codec2 / CN): DRED is N/A.
CodecId::Codec2_1200 | CodecId::Codec2_3200 | CodecId::ComfortNoise => 0,
}
}
/// Returns whether the legacy-FEC escape hatch is active.
///
/// Read from `AUDIO_USE_LEGACY_FEC`. Any non-empty value activates legacy
/// mode; unset or empty leaves DRED enabled.
fn read_legacy_fec_env() -> bool {
match std::env::var(LEGACY_FEC_ENV) {
Ok(v) => !v.is_empty() && v != "0" && v.to_ascii_lowercase() != "false",
Err(_) => false,
}
}
/// Opus encoder implementing `AudioEncoder`.
///
/// Operates at 48 kHz mono. Supports frame sizes of 20 ms (960 samples)
/// and 40 ms (1920 samples).
/// Operates at 48 kHz mono. Supports 20 ms and 40 ms frames via the active
/// `QualityProfile`.
pub struct OpusEncoder {
inner: Encoder,
codec_id: CodecId,
frame_duration_ms: u8,
/// When `true`, revert to the Phase 0 behavior: inband FEC Mode1, DRED
/// disabled, no loss floor. Captured at construction time and not
/// re-read mid-call.
legacy_fec_mode: bool,
}
// SAFETY: OpusEncoder is only used via `&mut self` methods. The inner
// audiopus Encoder contains a raw pointer that is !Sync, but we never
// share it across threads without exclusive access.
// opusic-c Encoder wraps a non-null pointer that is !Sync by default,
// but we never share it across threads without exclusive access.
unsafe impl Sync for OpusEncoder {}
impl OpusEncoder {
/// Create a new Opus encoder for the given quality profile.
pub fn new(profile: QualityProfile) -> Result<Self, CodecError> {
let encoder = Encoder::new(SampleRate::Hz48000, Channels::Mono, Application::Voip)
.map_err(|e| CodecError::EncodeFailed(format!("opus encoder init: {e}")))?;
// opusic-c argument order: (Channels, SampleRate, Application)
// — different from audiopus's (SampleRate, Channels, Application).
let encoder = Encoder::new(Channels::Mono, SampleRate::Hz48000, Application::Voip)
.map_err(|e| CodecError::EncodeFailed(format!("opus encoder init: {e:?}")))?;
let legacy_fec_mode = read_legacy_fec_env();
if legacy_fec_mode {
warn!(
"AUDIO_USE_LEGACY_FEC active — reverting Opus encoder to Phase 0 \
behavior (inband FEC Mode1, no DRED)"
);
}
let mut enc = Self {
inner: encoder,
codec_id: profile.codec,
frame_duration_ms: profile.frame_duration_ms,
legacy_fec_mode,
};
enc.apply_bitrate(profile.codec)?;
enc.set_inband_fec(true);
enc.set_dtx(true);
// Voice signal type hint for better compression
// Common setup — bitrate, DTX, signal hint, complexity. These are
// identical regardless of the protection mode below.
enc.apply_bitrate(profile.codec)?;
enc.set_dtx(true);
enc.inner
.set_signal(Signal::Voice)
.map_err(|e| CodecError::EncodeFailed(format!("set signal: {e}")))?;
.map_err(|e| CodecError::EncodeFailed(format!("set signal: {e:?}")))?;
enc.inner
.set_complexity(7)
.map_err(|e| CodecError::EncodeFailed(format!("set complexity: {e:?}")))?;
// Protection mode: DRED (Phase 1 default) or legacy inband FEC.
enc.apply_protection_mode(profile.codec)?;
Ok(enc)
}
fn apply_bitrate(&mut self, codec: CodecId) -> Result<(), CodecError> {
let bps = codec.bitrate_bps() as i32;
/// Configure the protection mode for the active codec.
///
/// In DRED mode (default): disable inband FEC, set DRED duration for the
/// codec tier, clamp packet_loss to the 5% floor so DRED stays active.
///
/// In legacy mode: enable inband FEC Mode1 (Phase 0 behavior), leave
/// DRED and packet_loss at libopus defaults.
fn apply_protection_mode(&mut self, codec: CodecId) -> Result<(), CodecError> {
if self.legacy_fec_mode {
self.inner
.set_inband_fec(InbandFec::Mode1)
.map_err(|e| CodecError::EncodeFailed(format!("set inband FEC: {e:?}")))?;
// Leave DRED at 0 and packet_loss at default — matches Phase 0.
return Ok(());
}
// DRED path: disable the overlapping inband FEC, enable DRED with
// per-profile duration, floor packet_loss so DRED emits.
self.inner
.set_bitrate(Bitrate::BitsPerSecond(bps))
.map_err(|e| CodecError::EncodeFailed(format!("set bitrate: {e}")))?;
.set_inband_fec(InbandFec::Off)
.map_err(|e| CodecError::EncodeFailed(format!("set inband FEC off: {e:?}")))?;
let dred_frames = dred_duration_for(codec);
self.inner
.set_dred_duration(dred_frames)
.map_err(|e| CodecError::EncodeFailed(format!("set DRED duration: {e:?}")))?;
self.inner
.set_packet_loss(DRED_LOSS_FLOOR_PCT)
.map_err(|e| CodecError::EncodeFailed(format!("set packet loss floor: {e:?}")))?;
debug!(
codec = ?codec,
dred_frames,
dred_ms = dred_frames as u32 * 10,
loss_floor_pct = DRED_LOSS_FLOOR_PCT,
"opus encoder: DRED enabled"
);
Ok(())
}
fn apply_bitrate(&mut self, codec: CodecId) -> Result<(), CodecError> {
let bps = codec.bitrate_bps();
self.inner
.set_bitrate(Bitrate::Value(bps))
.map_err(|e| CodecError::EncodeFailed(format!("set bitrate: {e:?}")))?;
debug!(bitrate_bps = bps, "opus encoder bitrate set");
Ok(())
}
@@ -56,6 +202,47 @@ impl OpusEncoder {
pub fn frame_samples(&self) -> usize {
(48_000 * self.frame_duration_ms as usize) / 1000
}
/// Set the encoder complexity (0-10). Higher values produce better quality
/// at the cost of more CPU. Default is 7.
pub fn set_complexity(&mut self, complexity: i32) {
let c = (complexity as u8).min(10);
let _ = self.inner.set_complexity(c);
}
/// Hint the encoder about expected packet loss percentage (0-100).
///
/// In DRED mode, the value is floored at `DRED_LOSS_FLOOR_PCT` so the
/// encoder never drops DRED emission even on a perfect network. Real
/// loss measurements from the quality adapter override upward.
///
/// In legacy mode, the value is passed through unchanged (min 0, max 100).
pub fn set_expected_loss(&mut self, loss_pct: u8) {
let clamped = if self.legacy_fec_mode {
loss_pct.min(100)
} else {
loss_pct.max(DRED_LOSS_FLOOR_PCT).min(100)
};
let _ = self.inner.set_packet_loss(clamped);
}
/// Set the DRED duration in 10 ms frame units (0 disables, max 104).
///
/// No-op in legacy mode. Normally driven automatically by the active
/// quality profile via `apply_protection_mode`; this setter exists for
/// tests and for the rare case where a caller needs to override the
/// per-profile default.
pub fn set_dred_duration(&mut self, frames: u8) {
if self.legacy_fec_mode {
return;
}
let _ = self.inner.set_dred_duration(frames.min(104));
}
/// Test/introspection accessor: whether legacy FEC mode is active.
pub fn is_legacy_fec_mode(&self) -> bool {
self.legacy_fec_mode
}
}
impl AudioEncoder for OpusEncoder {
@@ -67,10 +254,14 @@ impl AudioEncoder for OpusEncoder {
pcm.len()
)));
}
// opusic-c takes &[u16] for the sample input. Bit pattern is
// identical to i16 — the cast is zero-cost and the encoder
// interprets the bytes the same way as libopus internally.
let pcm_u16: &[u16] = bytemuck::cast_slice(pcm);
let n = self
.inner
.encode(pcm, out)
.map_err(|e| CodecError::EncodeFailed(format!("opus encode: {e}")))?;
.encode_to_slice(pcm_u16, out)
.map_err(|e| CodecError::EncodeFailed(format!("opus encode: {e:?}")))?;
Ok(n)
}
@@ -80,10 +271,13 @@ impl AudioEncoder for OpusEncoder {
fn set_profile(&mut self, profile: QualityProfile) -> Result<(), CodecError> {
match profile.codec {
CodecId::Opus24k | CodecId::Opus16k | CodecId::Opus6k => {
c if c.is_opus() => {
self.codec_id = profile.codec;
self.frame_duration_ms = profile.frame_duration_ms;
self.apply_bitrate(profile.codec)?;
// Refresh DRED duration for the new tier. apply_protection_mode
// is idempotent and handles the legacy-vs-DRED branch correctly.
self.apply_protection_mode(profile.codec)?;
Ok(())
}
other => Err(CodecError::UnsupportedTransition {
@@ -100,10 +294,190 @@ impl AudioEncoder for OpusEncoder {
}
fn set_inband_fec(&mut self, enabled: bool) {
let _ = self.inner.set_inband_fec(enabled);
// In DRED mode, ignore external requests to re-enable inband FEC —
// running both mechanisms wastes bitrate on overlapping protection
// and opusic-c's own docs recommend disabling inband FEC when DRED
// is on. Trait callers that genuinely want classical FEC should set
// `AUDIO_USE_LEGACY_FEC=1` and re-create the encoder.
if !self.legacy_fec_mode {
debug!(
enabled,
"set_inband_fec ignored: DRED mode is active (set AUDIO_USE_LEGACY_FEC to revert)"
);
return;
}
let mode = if enabled { InbandFec::Mode1 } else { InbandFec::Off };
let _ = self.inner.set_inband_fec(mode);
}
fn set_dtx(&mut self, enabled: bool) {
let _ = self.inner.set_dtx(enabled);
}
}
#[cfg(test)]
mod tests {
use super::*;
use wzp_proto::AudioDecoder;
/// Phase 0 acceptance gate: fail loudly if the linked libopus is not 1.5.x.
/// DRED (Phase 1+) only exists in libopus ≥ 1.5, so running against an
/// older version would silently regress the entire DRED integration.
#[test]
fn linked_libopus_is_1_5() {
let version = opusic_c::version();
assert!(
version.contains("1.5"),
"expected libopus 1.5.x, got: {version}"
);
}
#[test]
fn encoder_creates_at_good_profile() {
let enc = OpusEncoder::new(QualityProfile::GOOD).expect("opus encoder init");
assert_eq!(enc.codec_id, CodecId::Opus24k);
assert_eq!(enc.frame_samples(), 960); // 20 ms @ 48 kHz
}
#[test]
fn encoder_roundtrip_silence() {
let mut enc = OpusEncoder::new(QualityProfile::GOOD).unwrap();
let mut dec = crate::opus_dec::OpusDecoder::new(QualityProfile::GOOD).unwrap();
let pcm_in = vec![0i16; 960]; // 20 ms silence
let mut encoded = vec![0u8; 512];
let n = enc.encode(&pcm_in, &mut encoded).unwrap();
assert!(n > 0);
let mut pcm_out = vec![0i16; 960];
let samples = dec.decode(&encoded[..n], &mut pcm_out).unwrap();
assert_eq!(samples, 960);
}
// ─── Phase 1 — DRED duration policy ─────────────────────────────────────
#[test]
fn dred_duration_for_studio_tiers_is_100ms() {
assert_eq!(dred_duration_for(CodecId::Opus32k), 10);
assert_eq!(dred_duration_for(CodecId::Opus48k), 10);
assert_eq!(dred_duration_for(CodecId::Opus64k), 10);
}
#[test]
fn dred_duration_for_normal_tiers_is_200ms() {
assert_eq!(dred_duration_for(CodecId::Opus16k), 20);
assert_eq!(dred_duration_for(CodecId::Opus24k), 20);
}
#[test]
fn dred_duration_for_degraded_tier_is_500ms() {
assert_eq!(dred_duration_for(CodecId::Opus6k), 50);
}
#[test]
fn dred_duration_for_codec2_is_zero() {
assert_eq!(dred_duration_for(CodecId::Codec2_3200), 0);
assert_eq!(dred_duration_for(CodecId::Codec2_1200), 0);
assert_eq!(dred_duration_for(CodecId::ComfortNoise), 0);
}
// ─── Phase 1 — Legacy escape hatch ──────────────────────────────────────
/// By default (env var unset), legacy mode is off.
///
/// This test does NOT manipulate the environment to avoid flakiness
/// when the full suite runs in parallel. It only asserts on a freshly
/// created encoder in the ambient environment.
#[test]
fn default_mode_is_dred_not_legacy() {
// SAFETY: only run if the ambient env hasn't set the var externally.
if std::env::var(LEGACY_FEC_ENV).is_ok() {
return; // don't assert — someone set the env for a reason.
}
let enc = OpusEncoder::new(QualityProfile::GOOD).unwrap();
assert!(!enc.is_legacy_fec_mode());
}
// ─── Phase 1 — Behavioral regression: roundtrip still works ─────────────
#[test]
fn dred_mode_roundtrip_voice_pattern() {
// Use a realistic voice-like input (sine wave at speech frequencies)
// so the encoder emits meaningful DRED data rather than trivially
// compressible silence.
let mut enc = OpusEncoder::new(QualityProfile::GOOD).unwrap();
let mut dec = crate::opus_dec::OpusDecoder::new(QualityProfile::GOOD).unwrap();
let mut total_encoded_bytes = 0usize;
// Run 50 frames (1 second) so DRED fills up and starts emitting.
for frame_idx in 0..50 {
let pcm_in: Vec<i16> = (0..960)
.map(|i| {
let t = (frame_idx * 960 + i) as f64 / 48_000.0;
(8000.0 * (2.0 * std::f64::consts::PI * 300.0 * t).sin()) as i16
})
.collect();
let mut encoded = vec![0u8; 512];
let n = enc.encode(&pcm_in, &mut encoded).unwrap();
assert!(n > 0);
total_encoded_bytes += n;
let mut pcm_out = vec![0i16; 960];
let samples = dec.decode(&encoded[..n], &mut pcm_out).unwrap();
assert_eq!(samples, 960);
}
// Effective bitrate after 1 second of encoding.
// Opus 24k base + ~1 kbps DRED ≈ 25 kbps ≈ 3125 bytes/sec.
// Allow generous headroom (2000 lower bound, 8000 upper bound) —
// this is a behavioral regression check, not a tight bitrate assertion.
// The exact value is printed with --nocapture for diagnostic use.
eprintln!(
"[phase1 bitrate probe] legacy_fec_mode={} total_encoded={} bytes/sec",
enc.is_legacy_fec_mode(),
total_encoded_bytes
);
assert!(
total_encoded_bytes > 2000,
"encoder output too small: {total_encoded_bytes} bytes/sec (DRED likely not emitting)"
);
assert!(
total_encoded_bytes < 8000,
"encoder output too large: {total_encoded_bytes} bytes/sec"
);
}
// ─── Phase 1 — set_profile updates DRED duration on tier switch ─────────
#[test]
fn profile_switch_refreshes_dred_duration() {
// Start on GOOD (Opus 24k, DRED 20 frames), switch to DEGRADED
// (Opus 6k, DRED 50 frames). The encoder should accept both profile
// changes without error. We can't directly observe the DRED duration
// inside libopus, but apply_protection_mode returns Ok for both.
let mut enc = OpusEncoder::new(QualityProfile::GOOD).unwrap();
assert_eq!(enc.codec_id, CodecId::Opus24k);
enc.set_profile(QualityProfile::DEGRADED).unwrap();
assert_eq!(enc.codec_id, CodecId::Opus6k);
enc.set_profile(QualityProfile::STUDIO_64K).unwrap();
assert_eq!(enc.codec_id, CodecId::Opus64k);
}
// ─── Phase 1 — Trait set_inband_fec is a no-op in DRED mode ─────────────
#[test]
fn set_inband_fec_noop_in_dred_mode() {
if std::env::var(LEGACY_FEC_ENV).is_ok() {
return;
}
let mut enc = OpusEncoder::new(QualityProfile::GOOD).unwrap();
// Should not error, should not re-enable inband FEC internally.
enc.set_inband_fec(true);
// We can't directly query libopus's inband FEC state through opusic-c,
// but the call must not panic and the encoder must still work.
let pcm_in = vec![0i16; 960];
let mut encoded = vec![0u8; 512];
let n = enc.encode(&pcm_in, &mut encoded).unwrap();
assert!(n > 0);
}
}

333
crates/wzp-codec/src/resample.rs
View File

@@ -1,55 +1,258 @@
//! Simple linear resampler for 48 kHz <-> 8 kHz conversion.
//! Windowed-sinc FIR resampler for 48 kHz <-> 8 kHz conversion.
//!
//! These are basic implementations suitable for voice. For higher quality,
//! replace with the `rubato` crate later.
//! Provides both stateless free functions (backward-compatible) and stateful
//! `Downsampler48to8` / `Upsampler8to48` structs that maintain overlap history
//! between frames for glitch-free streaming.
/// Downsample from 48 kHz to 8 kHz (6:1 decimation with averaging).
use std::f64::consts::PI;
// ─── FIR kernel parameters ─────────────────────────────────────────────────
/// Number of FIR taps in the anti-alias / interpolation filter.
const FIR_TAPS: usize = 48;
/// Kaiser window beta parameter — controls sidelobe attenuation.
const KAISER_BETA: f64 = 8.0;
/// Cutoff frequency in Hz for the low-pass filter (just below 4 kHz Nyquist of 8 kHz).
const CUTOFF_HZ: f64 = 3800.0;
/// Working sample rate in Hz.
const SAMPLE_RATE: f64 = 48000.0;
/// Decimation / interpolation ratio between 48 kHz and 8 kHz.
const RATIO: usize = 6;
// ─── Kaiser window helpers ─────────────────────────────────────────────────
/// Zeroth-order modified Bessel function of the first kind, I₀(x).
///
/// Each output sample is the average of 6 consecutive input samples,
/// providing basic anti-aliasing via a box filter.
pub fn resample_48k_to_8k(input: &[i16]) -> Vec<i16> {
const RATIO: usize = 6;
let out_len = input.len() / RATIO;
let mut output = Vec::with_capacity(out_len);
for chunk in input.chunks_exact(RATIO) {
let sum: i32 = chunk.iter().map(|&s| s as i32).sum();
output.push((sum / RATIO as i32) as i16);
/// Computed via the well-known power-series expansion, converging rapidly
/// for the moderate values of x used in Kaiser window design.
fn bessel_i0(x: f64) -> f64 {
let mut sum = 1.0f64;
let mut term = 1.0f64;
let half_x = x / 2.0;
for k in 1..=25 {
term *= (half_x / k as f64) * (half_x / k as f64);
sum += term;
if term < 1e-12 * sum {
break;
}
}
output
sum
}
/// Upsample from 8 kHz to 48 kHz (1:6 interpolation with linear interp).
/// Build a windowed-sinc low-pass FIR kernel.
///
/// Linearly interpolates between each pair of input samples to produce
/// 6 output samples per input sample.
pub fn resample_8k_to_48k(input: &[i16]) -> Vec<i16> {
const RATIO: usize = 6;
if input.is_empty() {
return Vec::new();
}
/// Returns `FIR_TAPS` coefficients normalised so that the DC gain is exactly 1.0.
fn build_fir_kernel() -> [f64; FIR_TAPS] {
let mut kernel = [0.0f64; FIR_TAPS];
let m = (FIR_TAPS - 1) as f64;
let fc = CUTOFF_HZ / SAMPLE_RATE; // normalised cutoff (0..0.5)
let beta_denom = bessel_i0(KAISER_BETA);
let out_len = input.len() * RATIO;
let mut output = Vec::with_capacity(out_len);
for i in 0..input.len() {
let current = input[i] as i32;
let next = if i + 1 < input.len() {
input[i + 1] as i32
for i in 0..FIR_TAPS {
// Sinc
let n = i as f64 - m / 2.0;
let sinc = if n.abs() < 1e-12 {
2.0 * fc
} else {
current // hold last sample
(2.0 * PI * fc * n).sin() / (PI * n)
};
for j in 0..RATIO {
let interp = current + (next - current) * j as i32 / RATIO as i32;
output.push(interp as i16);
// Kaiser window
let t = 2.0 * i as f64 / m - 1.0; // range [-1, 1]
let kaiser = bessel_i0(KAISER_BETA * (1.0 - t * t).max(0.0).sqrt()) / beta_denom;
kernel[i] = sinc * kaiser;
}
// Normalise to unity DC gain.
let sum: f64 = kernel.iter().sum();
if sum.abs() > 1e-15 {
for k in kernel.iter_mut() {
*k /= sum;
}
}
output
kernel
}
// ─── Stateful Downsampler 48→8 ─────────────────────────────────────────────
/// Stateful polyphase FIR downsampler from 48 kHz to 8 kHz.
///
/// Maintains `FIR_TAPS - 1` samples of history between successive calls to
/// `process()` for seamless frame boundaries.
pub struct Downsampler48to8 {
kernel: [f64; FIR_TAPS],
history: Vec<f64>,
}
impl Downsampler48to8 {
pub fn new() -> Self {
Self {
kernel: build_fir_kernel(),
history: vec![0.0; FIR_TAPS - 1],
}
}
/// Downsample a block of 48 kHz samples to 8 kHz.
///
/// The input length should be a multiple of 6; any trailing samples that
/// don't form a complete output sample are consumed into the history.
pub fn process(&mut self, input: &[i16]) -> Vec<i16> {
let hist_len = self.history.len(); // FIR_TAPS - 1
let total_len = hist_len + input.len();
// Build a working buffer: history ++ input (as f64).
let mut work = Vec::with_capacity(total_len);
work.extend_from_slice(&self.history);
work.extend(input.iter().map(|&s| s as f64));
let out_len = input.len() / RATIO;
let mut output = Vec::with_capacity(out_len);
for i in 0..out_len {
// The centre of the filter for output sample i sits at
// position hist_len + i*RATIO in the work buffer (aligning
// with the first new input sample at decimation phase 0).
let centre = hist_len + i * RATIO;
let start = centre + 1 - FIR_TAPS; // may be 0 for the first few
let mut acc = 0.0f64;
for k in 0..FIR_TAPS {
let idx = start + k;
if idx < work.len() {
acc += work[idx] * self.kernel[k];
}
}
output.push(acc.round().clamp(-32768.0, 32767.0) as i16);
}
// Update history: keep the last (FIR_TAPS - 1) samples from work.
if work.len() >= hist_len {
self.history
.copy_from_slice(&work[work.len() - hist_len..]);
} else {
// Input was shorter than history — shift.
let shift = hist_len - work.len();
self.history.copy_within(shift.., 0);
for (i, &v) in work.iter().enumerate() {
self.history[hist_len - work.len() + i] = v;
}
}
output
}
}
impl Default for Downsampler48to8 {
fn default() -> Self {
Self::new()
}
}
// ─── Stateful Upsampler 8→48 ───────────────────────────────────────────────
/// Stateful FIR upsampler from 8 kHz to 48 kHz.
///
/// Inserts zeros between input samples (zero-stuffing), then applies the
/// low-pass FIR to remove imaging, with gain compensation of `RATIO`.
pub struct Upsampler8to48 {
kernel: [f64; FIR_TAPS],
history: Vec<f64>,
}
impl Upsampler8to48 {
pub fn new() -> Self {
Self {
kernel: build_fir_kernel(),
history: vec![0.0; FIR_TAPS - 1],
}
}
/// Upsample a block of 8 kHz samples to 48 kHz.
pub fn process(&mut self, input: &[i16]) -> Vec<i16> {
let hist_len = self.history.len(); // FIR_TAPS - 1
// Zero-stuff: insert RATIO-1 zeros between each input sample.
let stuffed_len = input.len() * RATIO;
let total_len = hist_len + stuffed_len;
let mut work = Vec::with_capacity(total_len);
work.extend_from_slice(&self.history);
for &s in input {
work.push(s as f64);
for _ in 1..RATIO {
work.push(0.0);
}
}
let out_len = stuffed_len;
let mut output = Vec::with_capacity(out_len);
// The gain factor compensates for the zeros introduced by stuffing.
let gain = RATIO as f64;
for i in 0..out_len {
let centre = hist_len + i;
let start = centre + 1 - FIR_TAPS;
let mut acc = 0.0f64;
for k in 0..FIR_TAPS {
let idx = start + k;
if idx < work.len() {
acc += work[idx] * self.kernel[k];
}
}
acc *= gain;
output.push(acc.round().clamp(-32768.0, 32767.0) as i16);
}
// Update history.
if work.len() >= hist_len {
self.history
.copy_from_slice(&work[work.len() - hist_len..]);
} else {
let shift = hist_len - work.len();
self.history.copy_within(shift.., 0);
for (i, &v) in work.iter().enumerate() {
self.history[hist_len - work.len() + i] = v;
}
}
output
}
}
impl Default for Upsampler8to48 {
fn default() -> Self {
Self::new()
}
}
// ─── Backward-compatible free functions ─────────────────────────────────────
/// Downsample from 48 kHz to 8 kHz (6:1 decimation with FIR anti-alias filter).
///
/// This is a convenience wrapper that creates a temporary [`Downsampler48to8`].
/// For streaming use, prefer the stateful struct to avoid edge artefacts between
/// frames.
pub fn resample_48k_to_8k(input: &[i16]) -> Vec<i16> {
let mut ds = Downsampler48to8::new();
ds.process(input)
}
/// Upsample from 8 kHz to 48 kHz (1:6 interpolation with FIR imaging filter).
///
/// This is a convenience wrapper that creates a temporary [`Upsampler8to48`].
/// For streaming use, prefer the stateful struct to avoid edge artefacts between
/// frames.
pub fn resample_8k_to_48k(input: &[i16]) -> Vec<i16> {
let mut us = Upsampler8to48::new();
us.process(input)
}
// ─── Tests ──────────────────────────────────────────────────────────────────
#[cfg(test)]
mod tests {
use super::*;
@@ -66,12 +269,28 @@ mod tests {
#[test]
fn dc_signal_preserved() {
// A constant signal should survive resampling
// A constant signal should survive resampling (approximately).
let input = vec![1000i16; 960];
let down = resample_48k_to_8k(&input);
assert!(down.iter().all(|&s| s == 1000));
// Allow some edge transient — check that the middle samples are close.
let mid_start = down.len() / 4;
let mid_end = 3 * down.len() / 4;
for &s in &down[mid_start..mid_end] {
assert!(
(s - 1000).abs() < 50,
"DC downsampled sample {s} too far from 1000"
);
}
let up = resample_8k_to_48k(&down);
assert!(up.iter().all(|&s| s == 1000));
let mid_start_up = up.len() / 4;
let mid_end_up = 3 * up.len() / 4;
for &s in &up[mid_start_up..mid_end_up] {
assert!(
(s - 1000).abs() < 100,
"DC upsampled sample {s} too far from 1000"
);
}
}
#[test]
@@ -79,4 +298,40 @@ mod tests {
assert!(resample_48k_to_8k(&[]).is_empty());
assert!(resample_8k_to_48k(&[]).is_empty());
}
#[test]
fn stateful_downsampler_produces_correct_length() {
let mut ds = Downsampler48to8::new();
let out = ds.process(&vec![0i16; 960]);
assert_eq!(out.len(), 160);
let out2 = ds.process(&vec![0i16; 960]);
assert_eq!(out2.len(), 160);
}
#[test]
fn stateful_upsampler_produces_correct_length() {
let mut us = Upsampler8to48::new();
let out = us.process(&vec![0i16; 160]);
assert_eq!(out.len(), 960);
let out2 = us.process(&vec![0i16; 160]);
assert_eq!(out2.len(), 960);
}
#[test]
fn fir_kernel_has_unity_dc_gain() {
let kernel = build_fir_kernel();
let sum: f64 = kernel.iter().sum();
assert!(
(sum - 1.0).abs() < 1e-10,
"FIR kernel DC gain should be 1.0, got {sum}"
);
}
#[test]
fn bessel_i0_known_values() {
// I₀(0) = 1
assert!((bessel_i0(0.0) - 1.0).abs() < 1e-12);
// I₀(1) ≈ 1.2660658
assert!((bessel_i0(1.0) - 1.2660658).abs() < 1e-5);
}
}

56
crates/wzp-crypto/src/handshake.rs
View File

@@ -110,7 +110,18 @@ impl KeyExchange for WarzoneKeyExchange {
hk.expand(b"warzone-session-key", &mut session_key)
.expect("HKDF expand for session key should not fail");
Ok(Box::new(ChaChaSession::new(session_key)))
// Derive SAS (Short Authentication String) from shared secret only.
// The shared secret is identical on both sides (X25519 DH property).
// A MITM would produce a different shared secret → different SAS.
// We use a dedicated HKDF label so SAS is independent of the session key.
let mut sas_key = [0u8; 4];
hk.expand(b"warzone-sas-code", &mut sas_key)
.expect("HKDF expand for SAS should not fail");
let sas_code = u32::from_be_bytes(sas_key) % 10000;
let mut session = ChaChaSession::new(session_key);
session.set_sas(sas_code);
Ok(Box::new(session))
}
}
@@ -211,4 +222,47 @@ mod tests {
assert_eq!(&decrypted, plaintext);
}
#[test]
fn sas_codes_match_between_peers() {
let mut alice = WarzoneKeyExchange::from_identity_seed(&[0xAA; 32]);
let mut bob = WarzoneKeyExchange::from_identity_seed(&[0xBB; 32]);
let alice_eph_pub = alice.generate_ephemeral();
let bob_eph_pub = bob.generate_ephemeral();
let alice_session = alice.derive_session(&bob_eph_pub).unwrap();
let bob_session = bob.derive_session(&alice_eph_pub).unwrap();
let alice_sas = alice_session.sas_code();
let bob_sas = bob_session.sas_code();
assert!(alice_sas.is_some(), "Alice should have SAS");
assert!(bob_sas.is_some(), "Bob should have SAS");
assert_eq!(alice_sas, bob_sas, "SAS codes must match between peers");
assert!(alice_sas.unwrap() < 10000, "SAS should be 4 digits");
}
#[test]
fn sas_differs_for_different_peers() {
let mut alice = WarzoneKeyExchange::from_identity_seed(&[0xAA; 32]);
let mut bob = WarzoneKeyExchange::from_identity_seed(&[0xBB; 32]);
let mut eve = WarzoneKeyExchange::from_identity_seed(&[0xEE; 32]);
let alice_eph = alice.generate_ephemeral();
let bob_eph = bob.generate_ephemeral();
let eve_eph = eve.generate_ephemeral();
let alice_bob_session = alice.derive_session(&bob_eph).unwrap();
// Eve does separate handshake with Bob (MITM scenario)
let eve_bob_session = eve.derive_session(&bob_eph).unwrap();
// SAS codes should differ — Eve's session has different shared secret
assert_ne!(
alice_bob_session.sas_code(),
eve_bob_session.sas_code(),
"MITM session should produce different SAS"
);
}
}

12
crates/wzp-crypto/src/session.rs
View File

@@ -26,6 +26,8 @@ pub struct ChaChaSession {
rekey_mgr: RekeyManager,
/// Pending ephemeral secret for rekey (stored until peer responds).
pending_rekey_secret: Option<StaticSecret>,
/// Short Authentication String (4-digit code for verbal verification).
sas_code: Option<u32>,
}
impl ChaChaSession {
@@ -46,9 +48,15 @@ impl ChaChaSession {
recv_seq: 0,
rekey_mgr: RekeyManager::new(shared_secret),
pending_rekey_secret: None,
sas_code: None,
}
}
/// Set the SAS code (called by key exchange after derivation).
pub fn set_sas(&mut self, code: u32) {
self.sas_code = Some(code);
}
/// Install a new key (after rekeying).
fn install_key(&mut self, new_key: [u8; 32]) {
use sha2::Digest;
@@ -136,6 +144,10 @@ impl CryptoSession for ChaChaSession {
Ok(())
}
fn sas_code(&self) -> Option<u32> {
self.sas_code
}
}
#[cfg(test)]

24
crates/wzp-fec/src/decoder.rs
View File

@@ -1,6 +1,7 @@
//! RaptorQ FEC decoder — reassembles source blocks from received source and repair symbols.
use std::collections::HashMap;
use std::time::Instant;
use raptorq::{EncodingPacket, ObjectTransmissionInformation, PayloadId, SourceBlockDecoder};
use wzp_proto::error::FecError;
@@ -9,6 +10,9 @@ use wzp_proto::FecDecoder;
/// Length prefix size (u16 little-endian), must match encoder.
const LEN_PREFIX: usize = 2;
/// Decoded blocks older than this are eligible for reuse by a new sender.
const BLOCK_STALE_SECS: u64 = 2;
/// State for one in-flight block being decoded.
struct BlockState {
/// Number of source symbols expected.
@@ -21,6 +25,8 @@ struct BlockState {
decoded: bool,
/// Cached decoded result.
result: Option<Vec<Vec<u8>>>,
/// When this block was last decoded (for staleness check).
decoded_at: Option<Instant>,
}
/// RaptorQ-based FEC decoder that handles multiple concurrent blocks.
@@ -58,6 +64,7 @@ impl RaptorQFecDecoder {
symbol_size: self.symbol_size,
decoded: false,
result: None,
decoded_at: None,
})
}
}
@@ -74,8 +81,20 @@ impl FecDecoder for RaptorQFecDecoder {
let block = self.get_or_create_block(block_id);
if block.decoded {
// Already decoded, ignore additional symbols.
return Ok(());
// If the block was decoded recently, skip (normal duplicate).
// If it's stale (>2s), a new sender is reusing this block_id — reset it.
if let Some(at) = block.decoded_at {
if at.elapsed().as_secs() >= BLOCK_STALE_SECS {
block.decoded = false;
block.result = None;
block.decoded_at = None;
block.packets.clear();
} else {
return Ok(());
}
} else {
return Ok(());
}
}
// Data should already be at symbol_size (length-prefixed and padded by the encoder).
@@ -132,6 +151,7 @@ impl FecDecoder for RaptorQFecDecoder {
let block = self.blocks.get_mut(&block_id).unwrap();
block.decoded = true;
block.decoded_at = Some(Instant::now());
block.result = Some(frames.clone());
Ok(Some(frames))
}

454
crates/wzp-proto/src/bandwidth.rs Normal file
View File

@@ -0,0 +1,454 @@
//! GCC-style bandwidth estimation and congestion control.
//!
//! Tracks available bandwidth using delay-based and loss-based signals,
//! then adjusts the sending bitrate to avoid congestion. The estimator
//! uses multiplicative decrease (15%) on congestion and additive increase
//! (5%) during underuse, following the general shape of Google Congestion
//! Control (GCC).
use std::collections::VecDeque;
use std::time::Instant;
use crate::packet::QualityReport;
use crate::QualityProfile;
/// Network congestion state derived from delay and loss signals.
#[derive(Clone, Copy, Debug, PartialEq, Eq)]
pub enum CongestionState {
/// Network is fine, can increase bandwidth.
Underuse,
/// Normal operation.
Normal,
/// Congestion detected, should decrease bandwidth.
Overuse,
}
/// Detects congestion from increasing RTT using an exponential moving average.
///
/// Maintains a baseline RTT (minimum observed) and compares the smoothed RTT
/// against it. If `rtt_ema > baseline * threshold_ratio`, congestion is detected.
/// The baseline slowly drifts upward to handle route changes.
struct DelayBasedDetector {
/// Baseline RTT (minimum observed).
baseline_rtt_ms: f64,
/// EMA of recent RTT.
rtt_ema: f64,
/// EMA smoothing factor.
alpha: f64,
/// Threshold: if rtt_ema > baseline * threshold_ratio, congestion detected.
threshold_ratio: f64,
/// Current state.
state: CongestionState,
/// Whether we have received any RTT sample yet.
initialized: bool,
/// Drift factor: baseline slowly increases each update to track route changes.
baseline_drift: f64,
}
impl DelayBasedDetector {
fn new() -> Self {
Self {
baseline_rtt_ms: f64::MAX,
rtt_ema: 0.0,
alpha: 0.3,
threshold_ratio: 1.5,
state: CongestionState::Normal,
initialized: false,
baseline_drift: 0.001,
}
}
/// Update the detector with a new RTT sample.
fn update(&mut self, rtt_ms: f64) {
if !self.initialized {
self.baseline_rtt_ms = rtt_ms;
self.rtt_ema = rtt_ms;
self.initialized = true;
self.state = CongestionState::Normal;
return;
}
// Track minimum RTT as baseline.
if rtt_ms < self.baseline_rtt_ms {
self.baseline_rtt_ms = rtt_ms;
} else {
// Slowly drift baseline upward to handle route changes.
self.baseline_rtt_ms += self.baseline_drift * (rtt_ms - self.baseline_rtt_ms);
}
// Update EMA.
self.rtt_ema = self.alpha * rtt_ms + (1.0 - self.alpha) * self.rtt_ema;
// Determine state.
let overuse_threshold = self.baseline_rtt_ms * self.threshold_ratio;
let underuse_threshold = self.baseline_rtt_ms * 1.1;
if self.rtt_ema > overuse_threshold {
self.state = CongestionState::Overuse;
} else if self.rtt_ema < underuse_threshold {
self.state = CongestionState::Underuse;
} else {
self.state = CongestionState::Normal;
}
}
fn state(&self) -> CongestionState {
self.state
}
}
/// Detects congestion from packet loss using a sliding window average.
struct LossBasedDetector {
/// Recent loss percentages (sliding window).
loss_window: VecDeque<f64>,
/// Maximum window size.
window_size: usize,
/// Loss threshold for congestion (default 5%).
threshold_pct: f64,
}
impl LossBasedDetector {
fn new() -> Self {
Self {
loss_window: VecDeque::with_capacity(10),
window_size: 10,
threshold_pct: 5.0,
}
}
/// Add a loss percentage sample to the window.
fn update(&mut self, loss_pct: f64) {
if self.loss_window.len() >= self.window_size {
self.loss_window.pop_front();
}
self.loss_window.push_back(loss_pct);
}
/// Returns true if the average loss in the window exceeds the threshold.
fn is_congested(&self) -> bool {
if self.loss_window.is_empty() {
return false;
}
let avg = self.loss_window.iter().sum::<f64>() / self.loss_window.len() as f64;
avg > self.threshold_pct
}
}
// ─── BandwidthEstimator ─────────────────────────────────────────────────────
/// GCC-style bandwidth estimator that tracks available bandwidth using
/// delay-based and loss-based congestion signals.
///
/// # Algorithm
///
/// - **Overuse** (delay or loss): multiplicative decrease by 15%.
/// - **Underuse** (delay) with no loss congestion: additive increase by 5%.
/// - **Normal**: hold steady.
/// - Result is always clamped to `[min_bw_kbps, max_bw_kbps]`.
pub struct BandwidthEstimator {
/// Current estimated bandwidth in kbps.
estimated_bw_kbps: f64,
/// Minimum bandwidth floor (don't go below this).
min_bw_kbps: f64,
/// Maximum bandwidth ceiling.
max_bw_kbps: f64,
/// Delay-based detector state.
delay_detector: DelayBasedDetector,
/// Loss-based detector state.
loss_detector: LossBasedDetector,
/// Last update timestamp.
last_update: Option<Instant>,
}
/// Multiplicative decrease factor applied on congestion (15% reduction).
const DECREASE_FACTOR: f64 = 0.85;
/// Additive increase factor applied during underuse (5% of current estimate).
const INCREASE_FACTOR: f64 = 0.05;
impl BandwidthEstimator {
/// Create a new bandwidth estimator.
///
/// - `initial_bw_kbps`: starting bandwidth estimate.
/// - `min`: minimum bandwidth floor in kbps.
/// - `max`: maximum bandwidth ceiling in kbps.
pub fn new(initial_bw_kbps: f64, min: f64, max: f64) -> Self {
Self {
estimated_bw_kbps: initial_bw_kbps,
min_bw_kbps: min,
max_bw_kbps: max,
delay_detector: DelayBasedDetector::new(),
loss_detector: LossBasedDetector::new(),
last_update: None,
}
}
/// Update the estimator with new network observations.
///
/// Returns the new estimated bandwidth in kbps.
///
/// - If delay overuse OR loss congested: decrease by 15% (multiplicative decrease).
/// - If delay underuse AND not loss congested: increase by 5% (additive increase).
/// - If normal: hold steady.
/// - Result is clamped to `[min, max]`.
pub fn update(&mut self, rtt_ms: f64, loss_pct: f64, _jitter_ms: f64) -> f64 {
self.delay_detector.update(rtt_ms);
self.loss_detector.update(loss_pct);
self.last_update = Some(Instant::now());
let delay_state = self.delay_detector.state();
let loss_congested = self.loss_detector.is_congested();
if delay_state == CongestionState::Overuse || loss_congested {
// Multiplicative decrease.
self.estimated_bw_kbps *= DECREASE_FACTOR;
} else if delay_state == CongestionState::Underuse && !loss_congested {
// Additive increase.
self.estimated_bw_kbps += self.estimated_bw_kbps * INCREASE_FACTOR;
}
// Normal: hold steady — no change.
// Clamp to [min, max].
self.estimated_bw_kbps = self
.estimated_bw_kbps
.clamp(self.min_bw_kbps, self.max_bw_kbps);
self.estimated_bw_kbps
}
/// Current estimated bandwidth in kbps.
pub fn estimated_kbps(&self) -> f64 {
self.estimated_bw_kbps
}
/// Current congestion state (derived from delay detector).
pub fn congestion_state(&self) -> CongestionState {
self.delay_detector.state()
}
/// Convenience method: update from a `QualityReport`.
///
/// Extracts RTT, loss, and jitter from the report and feeds them into
/// the estimator.
pub fn from_quality_report(&mut self, report: &QualityReport) -> f64 {
let rtt_ms = report.rtt_ms() as f64;
let loss_pct = report.loss_percent() as f64;
let jitter_ms = report.jitter_ms as f64;
self.update(rtt_ms, loss_pct, jitter_ms)
}
/// Recommend a `QualityProfile` based on the current bandwidth estimate.
///
/// - bw >= 25 kbps -> GOOD (Opus 24k + 20% FEC = ~28.8 kbps total)
/// - bw >= 8 kbps -> DEGRADED (Opus 6k + 50% FEC = ~9.0 kbps)
/// - bw < 8 kbps -> CATASTROPHIC (Codec2 1.2k + 100% FEC = ~2.4 kbps)
pub fn recommended_profile(&self) -> QualityProfile {
if self.estimated_bw_kbps >= 25.0 {
QualityProfile::GOOD
} else if self.estimated_bw_kbps >= 8.0 {
QualityProfile::DEGRADED
} else {
QualityProfile::CATASTROPHIC
}
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn initial_bandwidth() {
let bwe = BandwidthEstimator::new(50.0, 2.0, 100.0);
assert!((bwe.estimated_kbps() - 50.0).abs() < f64::EPSILON);
}
#[test]
fn stable_network_holds_bandwidth() {
let mut bwe = BandwidthEstimator::new(50.0, 2.0, 100.0);
// Feed stable, low RTT and 0% loss — after initial sample sets baseline,
// subsequent identical RTT should be underuse (rtt_ema < baseline * 1.1),
// causing slow increases. The bandwidth should stay near initial or grow slightly.
let initial = bwe.estimated_kbps();
for _ in 0..20 {
bwe.update(30.0, 0.0, 5.0);
}
// Should not have decreased significantly.
assert!(
bwe.estimated_kbps() >= initial,
"bandwidth should not decrease on stable network: got {} vs initial {}",
bwe.estimated_kbps(),
initial
);
}
#[test]
fn high_rtt_decreases_bandwidth() {
let mut bwe = BandwidthEstimator::new(50.0, 2.0, 100.0);
// Establish a low baseline.
for _ in 0..5 {
bwe.update(20.0, 0.0, 2.0);
}
let before = bwe.estimated_kbps();
// Now feed high RTT to trigger overuse.
for _ in 0..10 {
bwe.update(200.0, 0.0, 10.0);
}
assert!(
bwe.estimated_kbps() < before,
"bandwidth should decrease on high RTT: got {} vs before {}",
bwe.estimated_kbps(),
before
);
}
#[test]
fn high_loss_decreases_bandwidth() {
let mut bwe = BandwidthEstimator::new(50.0, 2.0, 100.0);
let before = bwe.estimated_kbps();
// Feed 10% loss repeatedly (above the 5% threshold).
for _ in 0..15 {
bwe.update(20.0, 10.0, 2.0);
}
assert!(
bwe.estimated_kbps() < before,
"bandwidth should decrease on high loss: got {} vs before {}",
bwe.estimated_kbps(),
before
);
}
#[test]
fn recovery_increases_bandwidth() {
let mut bwe = BandwidthEstimator::new(50.0, 2.0, 100.0);
// Drive bandwidth down with high RTT.
for _ in 0..5 {
bwe.update(20.0, 0.0, 2.0);
}
for _ in 0..20 {
bwe.update(200.0, 0.0, 10.0);
}
let low_bw = bwe.estimated_kbps();
assert!(low_bw < 50.0, "should have decreased");
// Now feed good conditions — low RTT should be underuse, causing increase.
// Reset the baseline by feeding very low RTT.
for _ in 0..30 {
bwe.update(10.0, 0.0, 1.0);
}
assert!(
bwe.estimated_kbps() > low_bw,
"bandwidth should recover: got {} vs low {}",
bwe.estimated_kbps(),
low_bw
);
}
#[test]
fn bandwidth_clamped_to_min() {
let mut bwe = BandwidthEstimator::new(10.0, 5.0, 100.0);
// Keep feeding congestion to drive bandwidth down.
for _ in 0..5 {
bwe.update(20.0, 0.0, 2.0);
}
for _ in 0..100 {
bwe.update(500.0, 50.0, 100.0);
}
assert!(
(bwe.estimated_kbps() - 5.0).abs() < f64::EPSILON,
"bandwidth should be clamped to min: got {}",
bwe.estimated_kbps()
);
}
#[test]
fn bandwidth_clamped_to_max() {
let mut bwe = BandwidthEstimator::new(90.0, 2.0, 100.0);
// Keep feeding great conditions to drive bandwidth up.
for _ in 0..200 {
bwe.update(5.0, 0.0, 1.0);
}
assert!(
bwe.estimated_kbps() <= 100.0,
"bandwidth should be clamped to max: got {}",
bwe.estimated_kbps()
);
}
#[test]
fn recommended_profile_thresholds() {
// At boundary: >= 25 kbps => GOOD
let bwe_good = BandwidthEstimator::new(25.0, 2.0, 100.0);
assert_eq!(bwe_good.recommended_profile(), QualityProfile::GOOD);
// Just below 25 => DEGRADED
let bwe_degraded = BandwidthEstimator::new(24.9, 2.0, 100.0);
assert_eq!(bwe_degraded.recommended_profile(), QualityProfile::DEGRADED);
// At boundary: >= 8 kbps => DEGRADED
let bwe_degraded2 = BandwidthEstimator::new(8.0, 2.0, 100.0);
assert_eq!(
bwe_degraded2.recommended_profile(),
QualityProfile::DEGRADED
);
// Below 8 => CATASTROPHIC
let bwe_cat = BandwidthEstimator::new(7.9, 2.0, 100.0);
assert_eq!(
bwe_cat.recommended_profile(),
QualityProfile::CATASTROPHIC
);
// High bandwidth
let bwe_high = BandwidthEstimator::new(80.0, 2.0, 100.0);
assert_eq!(bwe_high.recommended_profile(), QualityProfile::GOOD);
}
#[test]
fn from_quality_report_integration() {
let mut bwe = BandwidthEstimator::new(50.0, 2.0, 100.0);
// Build a QualityReport with moderate loss and RTT.
let report = QualityReport {
loss_pct: (10.0_f32 / 100.0 * 255.0) as u8, // ~10% loss
rtt_4ms: 25, // 100ms RTT
jitter_ms: 10,
bitrate_cap_kbps: 200,
};
let new_bw = bwe.from_quality_report(&report);
// Should return a valid bandwidth value.
assert!(new_bw > 0.0);
assert!(new_bw <= 100.0);
// The estimator should have been updated.
assert!((bwe.estimated_kbps() - new_bw).abs() < f64::EPSILON);
}
// ── Additional detector unit tests ──────────────────────────────────
#[test]
fn delay_detector_starts_normal() {
let det = DelayBasedDetector::new();
assert_eq!(det.state(), CongestionState::Normal);
}
#[test]
fn loss_detector_below_threshold() {
let mut det = LossBasedDetector::new();
for _ in 0..10 {
det.update(2.0); // 2% loss, well below 5% threshold
}
assert!(!det.is_congested());
}
#[test]
fn loss_detector_above_threshold() {
let mut det = LossBasedDetector::new();
for _ in 0..10 {
det.update(8.0); // 8% loss, above 5% threshold
}
assert!(det.is_congested());
}
}

48
crates/wzp-proto/src/codec_id.rs
View File

@@ -18,6 +18,12 @@ pub enum CodecId {
Codec2_1200 = 4,
/// Comfort noise descriptor (silence suppression)
ComfortNoise = 5,
/// Opus at 32kbps (studio low)
Opus32k = 6,
/// Opus at 48kbps (studio)
Opus48k = 7,
/// Opus at 64kbps (studio high)
Opus64k = 8,
}
impl CodecId {
@@ -27,6 +33,9 @@ impl CodecId {
Self::Opus24k => 24_000,
Self::Opus16k => 16_000,
Self::Opus6k => 6_000,
Self::Opus32k => 32_000,
Self::Opus48k => 48_000,
Self::Opus64k => 64_000,
Self::Codec2_3200 => 3_200,
Self::Codec2_1200 => 1_200,
Self::ComfortNoise => 0,
@@ -36,8 +45,7 @@ impl CodecId {
/// Preferred frame duration in milliseconds.
pub const fn frame_duration_ms(self) -> u8 {
match self {
Self::Opus24k => 20,
Self::Opus16k => 20,
Self::Opus24k | Self::Opus16k | Self::Opus32k | Self::Opus48k | Self::Opus64k => 20,
Self::Opus6k => 40,
Self::Codec2_3200 => 20,
Self::Codec2_1200 => 40,
@@ -48,7 +56,8 @@ impl CodecId {
/// Sample rate expected by this codec.
pub const fn sample_rate_hz(self) -> u32 {
match self {
Self::Opus24k | Self::Opus16k | Self::Opus6k => 48_000,
Self::Opus24k | Self::Opus16k | Self::Opus6k
| Self::Opus32k | Self::Opus48k | Self::Opus64k => 48_000,
Self::Codec2_3200 | Self::Codec2_1200 => 8_000,
Self::ComfortNoise => 48_000,
}
@@ -63,6 +72,9 @@ impl CodecId {
3 => Some(Self::Codec2_3200),
4 => Some(Self::Codec2_1200),
5 => Some(Self::ComfortNoise),
6 => Some(Self::Opus32k),
7 => Some(Self::Opus48k),
8 => Some(Self::Opus64k),
_ => None,
}
}
@@ -71,6 +83,12 @@ impl CodecId {
pub const fn to_wire(self) -> u8 {
self as u8
}
/// Returns true if this is an Opus variant.
pub const fn is_opus(self) -> bool {
matches!(self, Self::Opus6k | Self::Opus16k | Self::Opus24k
| Self::Opus32k | Self::Opus48k | Self::Opus64k)
}
}
/// Describes the complete quality configuration for a call session.
@@ -111,6 +129,30 @@ impl QualityProfile {
frames_per_block: 8,
};
/// Studio low: Opus 32kbps, minimal FEC.
pub const STUDIO_32K: Self = Self {
codec: CodecId::Opus32k,
fec_ratio: 0.1,
frame_duration_ms: 20,
frames_per_block: 5,
};
/// Studio: Opus 48kbps, minimal FEC.
pub const STUDIO_48K: Self = Self {
codec: CodecId::Opus48k,
fec_ratio: 0.1,
frame_duration_ms: 20,
frames_per_block: 5,
};
/// Studio high: Opus 64kbps, minimal FEC.
pub const STUDIO_64K: Self = Self {
codec: CodecId::Opus64k,
fec_ratio: 0.1,
frame_duration_ms: 20,
frames_per_block: 5,
};
/// Estimated total bandwidth in kbps including FEC overhead.
pub fn total_bitrate_kbps(&self) -> f32 {
let base = self.codec.bitrate_bps() as f32 / 1000.0;

151
crates/wzp-proto/src/jitter.rs
View File

@@ -1,4 +1,5 @@
use std::collections::BTreeMap;
use std::time::{Duration, Instant};
use crate::packet::MediaPacket;
@@ -20,19 +21,29 @@ pub struct AdaptivePlayoutDelay {
max_delay: usize,
/// Exponential moving average of inter-packet arrival jitter (ms).
jitter_ema: f64,
/// EMA smoothing factor (0.0-1.0, lower = smoother).
alpha: f64,
/// EMA smoothing factor for jitter increases (fast reaction).
alpha_up: f64,
/// EMA smoothing factor for jitter decreases (slow decay).
alpha_down: f64,
/// Last packet arrival timestamp (for computing inter-arrival jitter).
last_arrival_ms: Option<u64>,
/// Last packet expected timestamp.
last_expected_ms: Option<u64>,
/// Safety margin added to jitter-derived target (in packets).
safety_margin: f64,
/// Instant when a jitter spike was detected (handoff detection).
spike_detected_at: Option<Instant>,
/// Duration to hold max_delay after a spike is detected.
spike_cooldown: Duration,
/// Multiplier of jitter_ema that constitutes a spike.
spike_threshold_multiplier: f64,
}
/// Frame duration in milliseconds (20ms Opus/Codec2 frames).
const FRAME_DURATION_MS: f64 = 20.0;
/// Safety margin added to jitter-derived target (in packets).
const SAFETY_MARGIN_PACKETS: f64 = 2.0;
/// Default EMA smoothing factor.
/// Default safety margin in packets.
const DEFAULT_SAFETY_MARGIN: f64 = 2.0;
/// Default EMA smoothing factor (used for both up/down in non-mobile mode).
const DEFAULT_ALPHA: f64 = 0.05;
impl AdaptivePlayoutDelay {
@@ -46,9 +57,14 @@ impl AdaptivePlayoutDelay {
min_delay,
max_delay,
jitter_ema: 0.0,
alpha: DEFAULT_ALPHA,
alpha_up: DEFAULT_ALPHA,
alpha_down: DEFAULT_ALPHA,
last_arrival_ms: None,
last_expected_ms: None,
safety_margin: DEFAULT_SAFETY_MARGIN,
spike_detected_at: None,
spike_cooldown: Duration::from_secs(2),
spike_threshold_multiplier: 3.0,
}
}
@@ -64,13 +80,38 @@ impl AdaptivePlayoutDelay {
let expected_delta = expected_ms as f64 - last_expected as f64;
let jitter = (actual_delta - expected_delta).abs();
// Update EMA
self.jitter_ema = self.alpha * jitter + (1.0 - self.alpha) * self.jitter_ema;
// Spike detection: check before EMA update
if self.jitter_ema > 0.0
&& jitter > self.jitter_ema * self.spike_threshold_multiplier
{
self.spike_detected_at = Some(Instant::now());
}
// Convert jitter estimate to target delay in packets
let raw_target = (self.jitter_ema / FRAME_DURATION_MS).ceil() + SAFETY_MARGIN_PACKETS;
self.target_delay =
(raw_target as usize).clamp(self.min_delay, self.max_delay);
// Asymmetric EMA update
let alpha = if jitter > self.jitter_ema {
self.alpha_up
} else {
self.alpha_down
};
self.jitter_ema = alpha * jitter + (1.0 - alpha) * self.jitter_ema;
// Check if spike cooldown has expired
if let Some(spike_time) = self.spike_detected_at {
if spike_time.elapsed() >= self.spike_cooldown {
self.spike_detected_at = None;
}
}
// If within spike cooldown, return max_delay
if self.spike_detected_at.is_some() {
self.target_delay = self.max_delay;
} else {
// Convert jitter estimate to target delay in packets
let raw_target =
(self.jitter_ema / FRAME_DURATION_MS).ceil() + self.safety_margin;
self.target_delay =
(raw_target as usize).clamp(self.min_delay, self.max_delay);
}
}
self.last_arrival_ms = Some(arrival_ms);
@@ -87,6 +128,28 @@ impl AdaptivePlayoutDelay {
pub fn jitter_estimate_ms(&self) -> f64 {
self.jitter_ema
}
/// Enable or disable mobile mode, adjusting parameters for cellular networks.
///
/// Mobile mode uses:
/// - Asymmetric alpha (fast up=0.3, slow down=0.02) for quicker spike detection
/// - Higher safety margin (3.0 packets) to absorb handoff jitter
/// - Spike detection with 2-second cooldown at 3x threshold
pub fn set_mobile_mode(&mut self, enabled: bool) {
if enabled {
self.safety_margin = 3.0;
self.alpha_up = 0.3;
self.alpha_down = 0.02;
self.spike_threshold_multiplier = 3.0;
self.spike_cooldown = Duration::from_secs(2);
} else {
self.safety_margin = DEFAULT_SAFETY_MARGIN;
self.alpha_up = DEFAULT_ALPHA;
self.alpha_down = DEFAULT_ALPHA;
self.spike_threshold_multiplier = 3.0;
self.spike_cooldown = Duration::from_secs(2);
}
}
}
// ---------------------------------------------------------------------------
@@ -210,10 +273,21 @@ impl JitterBuffer {
return;
}
// Check if packet is too old (already played out)
// Check if packet is too old (already played out).
// A backward jump of >100 seq (~2s at 50fps) indicates a new sender in a
// federation room — reset instead of dropping.
if self.stats.packets_played > 0 && seq_before(seq, self.next_playout_seq) {
self.stats.packets_late += 1;
return;
let backward_distance = self.next_playout_seq.wrapping_sub(seq);
tracing::warn!(seq, next = self.next_playout_seq, backward_distance, "jitter: backward seq detected");
if backward_distance > 100 {
tracing::info!(seq, next = self.next_playout_seq, "jitter: RESET — new sender detected");
self.buffer.clear();
self.next_playout_seq = seq;
self.stats.packets_late = 0;
} else {
self.stats.packets_late += 1;
return;
}
}
// If we haven't started playout yet, adjust next_playout_seq to earliest known
@@ -349,10 +423,21 @@ impl JitterBuffer {
return;
}
// Check if packet is too old (already played out)
// Check if packet is too old (already played out).
// A backward jump of >100 seq (~2s at 50fps) indicates a new sender in a
// federation room — reset instead of dropping.
if self.stats.packets_played > 0 && seq_before(seq, self.next_playout_seq) {
self.stats.packets_late += 1;
return;
let backward_distance = self.next_playout_seq.wrapping_sub(seq);
tracing::warn!(seq, next = self.next_playout_seq, backward_distance, "jitter: backward seq detected");
if backward_distance > 100 {
tracing::info!(seq, next = self.next_playout_seq, "jitter: RESET — new sender detected");
self.buffer.clear();
self.next_playout_seq = seq;
self.stats.packets_late = 0;
} else {
self.stats.packets_late += 1;
return;
}
}
// If we haven't started playout yet, adjust next_playout_seq to earliest known
@@ -391,6 +476,11 @@ impl JitterBuffer {
self.adaptive.as_ref()
}
/// Get a mutable reference to the adaptive playout delay estimator.
pub fn adaptive_delay_mut(&mut self) -> Option<&mut AdaptivePlayoutDelay> {
self.adaptive.as_mut()
}
/// Adjust target depth based on observed jitter.
pub fn set_target_depth(&mut self, depth: usize) {
self.target_depth = depth.min(self.max_depth);
@@ -720,4 +810,29 @@ mod tests {
let ad = jb.adaptive_delay().unwrap();
assert_eq!(ad.target_delay(), 3);
}
// ---------------------------------------------------------------
// Mobile mode tests
// ---------------------------------------------------------------
#[test]
fn mobile_mode_increases_safety_margin() {
let mut apd = AdaptivePlayoutDelay::new(3, 50);
apd.set_mobile_mode(true);
assert_eq!(apd.safety_margin, 3.0);
assert_eq!(apd.alpha_up, 0.3);
assert_eq!(apd.alpha_down, 0.02);
apd.set_mobile_mode(false);
assert_eq!(apd.safety_margin, DEFAULT_SAFETY_MARGIN);
assert_eq!(apd.alpha_up, DEFAULT_ALPHA);
assert_eq!(apd.alpha_down, DEFAULT_ALPHA);
}
#[test]
fn mobile_mode_accessible_via_jitter_buffer() {
let mut jb = JitterBuffer::new_adaptive(3, 50);
jb.adaptive_delay_mut().unwrap().set_mobile_mode(true);
assert_eq!(jb.adaptive_delay().unwrap().safety_margin, 3.0);
}
}

9
crates/wzp-proto/src/lib.rs
View File

@@ -12,6 +12,7 @@
//! - Identity = 32-byte seed → HKDF → Ed25519 (signing) + X25519 (encryption)
//! - Fingerprint = SHA-256(Ed25519 pub)[:16]
pub mod bandwidth;
pub mod codec_id;
pub mod error;
pub mod jitter;
@@ -24,9 +25,11 @@ pub mod traits;
pub use codec_id::{CodecId, QualityProfile};
pub use error::*;
pub use packet::{
HangupReason, MediaHeader, MediaPacket, MiniFrameContext, MiniHeader, QualityReport,
SignalMessage, TrunkEntry, TrunkFrame, FRAME_TYPE_FULL, FRAME_TYPE_MINI,
CallAcceptMode, HangupReason, MediaHeader, MediaPacket, MiniFrameContext, MiniHeader,
QualityReport, RoomParticipant, SignalMessage, TrunkEntry, TrunkFrame, FRAME_TYPE_FULL,
FRAME_TYPE_MINI,
};
pub use quality::{AdaptiveQualityController, Tier};
pub use bandwidth::{BandwidthEstimator, CongestionState};
pub use quality::{AdaptiveQualityController, NetworkContext, Tier};
pub use session::{Session, SessionEvent, SessionState};
pub use traits::*;

238
crates/wzp-proto/src/packet.rs
View File

@@ -46,6 +46,23 @@ impl MediaHeader {
/// Header size in bytes on the wire.
pub const WIRE_SIZE: usize = 12;
/// Create a default header for raw PCM relay (used by WebSocket bridge).
pub fn default_pcm() -> Self {
Self {
version: 0,
is_repair: false,
codec_id: CodecId::Opus24k,
has_quality_report: false,
fec_ratio_encoded: 0,
seq: 0,
timestamp: 0,
fec_block: 0,
fec_symbol: 0,
reserved: 0,
csrc_count: 0,
}
}
/// Encode the FEC ratio float (0.0-2.0+) to a 7-bit value (0-127).
pub fn encode_fec_ratio(ratio: f32) -> u8 {
// Map 0.0-2.0 to 0-127, clamping at 127
@@ -531,6 +548,9 @@ pub enum SignalMessage {
signature: Vec<u8>,
/// Supported quality profiles.
supported_profiles: Vec<crate::QualityProfile>,
/// Optional display name set by the caller.
#[serde(default)]
alias: Option<String>,
},
/// Call acceptance (analogous to Warzone's WireMessage::CallAnswer).
@@ -564,6 +584,26 @@ pub enum SignalMessage {
recommended_profile: crate::QualityProfile,
},
/// Phase 4 telemetry: loss-recovery counts for the current session.
/// Sent periodically from receivers to the relay so Prometheus metrics
/// can distinguish DRED reconstructions from classical PLC invocations.
/// Fields default to 0 on old receivers (`#[serde(default)]`), so
/// introducing this variant is backward-compatible with pre-Phase-4
/// relays — they'll just log "unknown signal variant" on receipt.
LossRecoveryUpdate {
/// Total frames reconstructed via DRED since call start (monotonic).
#[serde(default)]
dred_reconstructions: u64,
/// Total frames filled via classical Opus/Codec2 PLC since call
/// start (monotonic).
#[serde(default)]
classical_plc_invocations: u64,
/// Total frames decoded since call start. Used by the relay to
/// compute recovery rates as a fraction of total frames.
#[serde(default)]
frames_decoded: u64,
},
/// Connection keepalive / RTT measurement.
Ping { timestamp_ms: u64 },
Pong { timestamp_ms: u64 },
@@ -591,6 +631,170 @@ pub enum SignalMessage {
},
/// Acknowledge a transfer request.
TransferAck,
/// Presence update from a peer relay (gossip protocol).
/// Sent periodically over probe connections to share which fingerprints
/// are connected to the sending relay.
PresenceUpdate {
/// Fingerprints currently connected to the sending relay.
fingerprints: Vec<String>,
/// Address of the sending relay (e.g., "192.168.1.10:4433").
relay_addr: String,
},
/// Ask a peer relay to look up a fingerprint in its registry.
RouteQuery {
fingerprint: String,
ttl: u8,
},
/// Response to a route query.
RouteResponse {
fingerprint: String,
found: bool,
relay_chain: Vec<String>,
},
/// Request to set up a forwarding session for a specific fingerprint.
/// Sent over a relay link (`_relay` SNI) to ask the peer relay to
/// create a room and forward media for the given session.
SessionForward {
session_id: String,
target_fingerprint: String,
source_relay: String,
},
/// Confirm that the forwarding session has been set up on the peer relay.
/// The `room_name` tells the source relay which room to address media to.
SessionForwardAck {
session_id: String,
room_name: String,
},
/// Room membership update — sent by relay to all participants when someone joins or leaves.
RoomUpdate {
/// Current participant count.
count: u32,
/// List of participants currently in the room.
participants: Vec<RoomParticipant>,
},
// ── Federation signals (relay-to-relay) ──
/// Federation: initial handshake — the connecting relay identifies itself.
FederationHello {
/// TLS certificate fingerprint of the connecting relay.
tls_fingerprint: String,
},
/// Federation: this relay now has local participants in a global room.
GlobalRoomActive {
room: String,
/// Participants on the announcing relay (for federated presence).
#[serde(default)]
participants: Vec<RoomParticipant>,
},
/// Federation: this relay's last local participant left a global room.
GlobalRoomInactive {
room: String,
},
// ── Direct calling signals (client ↔ relay signaling) ──
/// Register on relay for direct calls. Sent on `_signal` connections
/// after optional AuthToken.
RegisterPresence {
/// Client's Ed25519 identity public key.
identity_pub: [u8; 32],
/// Signature over ("register-presence" || identity_pub).
signature: Vec<u8>,
/// Optional display name.
alias: Option<String>,
},
/// Relay confirms presence registration.
RegisterPresenceAck {
success: bool,
#[serde(skip_serializing_if = "Option::is_none")]
error: Option<String>,
},
/// Direct call offer routed through the relay to a specific peer.
DirectCallOffer {
/// Caller's fingerprint.
caller_fingerprint: String,
/// Caller's display name.
caller_alias: Option<String>,
/// Target's fingerprint.
target_fingerprint: String,
/// Unique call session ID (UUID).
call_id: String,
/// Caller's Ed25519 identity pub.
identity_pub: [u8; 32],
/// Caller's ephemeral X25519 pub (for key exchange on media connect).
ephemeral_pub: [u8; 32],
/// Signature over (ephemeral_pub || target_fingerprint || call_id).
signature: Vec<u8>,
/// Supported quality profiles.
supported_profiles: Vec<crate::QualityProfile>,
},
/// Callee's response to a direct call.
DirectCallAnswer {
call_id: String,
/// How the callee accepts (or rejects).
accept_mode: CallAcceptMode,
/// Callee's identity pub (present when accepting).
#[serde(skip_serializing_if = "Option::is_none")]
identity_pub: Option<[u8; 32]>,
/// Callee's ephemeral pub (present when accepting).
#[serde(skip_serializing_if = "Option::is_none")]
ephemeral_pub: Option<[u8; 32]>,
/// Signature (present when accepting).
#[serde(skip_serializing_if = "Option::is_none")]
signature: Option<Vec<u8>>,
/// Chosen quality profile (present when accepting).
#[serde(skip_serializing_if = "Option::is_none")]
chosen_profile: Option<crate::QualityProfile>,
},
/// Relay tells both parties: media room is ready.
CallSetup {
call_id: String,
/// Room name on the relay for the media session (e.g., "_call:a1b2c3d4").
room: String,
/// Relay address for the QUIC media connection.
relay_addr: String,
},
/// Ringing notification (relay → caller, callee received the offer).
CallRinging {
call_id: String,
},
}
/// How the callee responds to a direct call.
#[derive(Clone, Copy, Debug, PartialEq, Eq, Serialize, Deserialize)]
pub enum CallAcceptMode {
/// Reject the call.
Reject,
/// Accept with trust — in Phase 2, this enables P2P (reveals IP).
/// In Phase 1, behaves the same as AcceptGeneric.
AcceptTrusted,
/// Accept with privacy — relay always mediates media.
AcceptGeneric,
}
/// A participant entry in a RoomUpdate message.
#[derive(Clone, Debug, Serialize, Deserialize)]
pub struct RoomParticipant {
/// Identity fingerprint (hex string, stable across reconnects if seed is persisted).
pub fingerprint: String,
/// Optional display name set by the client.
pub alias: Option<String>,
/// Relay label — identifies which relay this participant is connected to.
/// None for local participants, Some("Relay B") for federated.
#[serde(default)]
pub relay_label: Option<String>,
}
/// Reasons for ending a call.
@@ -776,6 +980,40 @@ mod tests {
assert!(matches!(decoded, SignalMessage::TransferAck));
}
#[test]
fn presence_update_signal_roundtrip() {
let msg = SignalMessage::PresenceUpdate {
fingerprints: vec!["aabb".to_string(), "ccdd".to_string()],
relay_addr: "10.0.0.1:4433".to_string(),
};
let json = serde_json::to_string(&msg).unwrap();
let decoded: SignalMessage = serde_json::from_str(&json).unwrap();
match decoded {
SignalMessage::PresenceUpdate { fingerprints, relay_addr } => {
assert_eq!(fingerprints.len(), 2);
assert!(fingerprints.contains(&"aabb".to_string()));
assert!(fingerprints.contains(&"ccdd".to_string()));
assert_eq!(relay_addr, "10.0.0.1:4433");
}
_ => panic!("expected PresenceUpdate variant"),
}
// Empty fingerprints list
let msg_empty = SignalMessage::PresenceUpdate {
fingerprints: vec![],
relay_addr: "10.0.0.2:4433".to_string(),
};
let json = serde_json::to_string(&msg_empty).unwrap();
let decoded: SignalMessage = serde_json::from_str(&json).unwrap();
match decoded {
SignalMessage::PresenceUpdate { fingerprints, relay_addr } => {
assert!(fingerprints.is_empty());
assert_eq!(relay_addr, "10.0.0.2:4433");
}
_ => panic!("expected PresenceUpdate variant"),
}
}
#[test]
fn fec_ratio_encode_decode() {
let ratio = 0.5;

252
crates/wzp-proto/src/quality.rs
View File

@@ -1,4 +1,5 @@
use std::collections::VecDeque;
use std::time::{Duration, Instant};
use crate::packet::QualityReport;
use crate::traits::QualityController;
@@ -24,24 +25,71 @@ impl Tier {
}
}
/// Determine which tier a quality report belongs to.
/// Determine which tier a quality report belongs to (default/WiFi thresholds).
pub fn classify(report: &QualityReport) -> Self {
Self::classify_with_context(report, NetworkContext::Unknown)
}
/// Classify with network-context-aware thresholds.
pub fn classify_with_context(report: &QualityReport, context: NetworkContext) -> Self {
let loss = report.loss_percent();
let rtt = report.rtt_ms();
if loss > 40.0 || rtt > 600 {
Self::Catastrophic
} else if loss > 10.0 || rtt > 400 {
Self::Degraded
} else {
Self::Good
match context {
NetworkContext::CellularLte
| NetworkContext::Cellular5g
| NetworkContext::Cellular3g => {
// Tighter thresholds for cellular networks
if loss > 25.0 || rtt > 500 {
Self::Catastrophic
} else if loss > 8.0 || rtt > 300 {
Self::Degraded
} else {
Self::Good
}
}
NetworkContext::WiFi | NetworkContext::Unknown => {
// Original thresholds
if loss > 40.0 || rtt > 600 {
Self::Catastrophic
} else if loss > 10.0 || rtt > 400 {
Self::Degraded
} else {
Self::Good
}
}
}
}
/// Return the next lower (worse) tier, or None if already at the worst.
pub fn downgrade(self) -> Option<Tier> {
match self {
Self::Good => Some(Self::Degraded),
Self::Degraded => Some(Self::Catastrophic),
Self::Catastrophic => None,
}
}
}
/// Describes the network transport type for context-aware quality decisions.
#[derive(Clone, Copy, Debug, PartialEq, Eq)]
pub enum NetworkContext {
WiFi,
CellularLte,
Cellular5g,
Cellular3g,
Unknown,
}
impl Default for NetworkContext {
fn default() -> Self {
Self::Unknown
}
}
/// Adaptive quality controller with hysteresis to prevent tier flapping.
///
/// - Downgrade: 3 consecutive reports in a worse tier
/// - Downgrade: 3 consecutive reports in a worse tier (2 on cellular)
/// - Upgrade: 10 consecutive reports in a better tier
pub struct AdaptiveQualityController {
current_tier: Tier,
@@ -54,14 +102,26 @@ pub struct AdaptiveQualityController {
history: VecDeque<QualityReport>,
/// Whether the profile was manually forced (disables adaptive logic).
forced: bool,
/// Current network context for threshold selection.
network_context: NetworkContext,
/// FEC boost expiry time (set during network handoff).
fec_boost_until: Option<Instant>,
/// FEC boost amount to add during handoff recovery window.
fec_boost_amount: f32,
}
/// Threshold for downgrading (fast reaction to degradation).
const DOWNGRADE_THRESHOLD: u32 = 3;
/// Threshold for downgrading on cellular networks (even faster).
const CELLULAR_DOWNGRADE_THRESHOLD: u32 = 2;
/// Threshold for upgrading (slow, cautious improvement).
const UPGRADE_THRESHOLD: u32 = 10;
/// Maximum history window size.
const HISTORY_SIZE: usize = 20;
/// Default FEC boost amount during handoff recovery.
const DEFAULT_FEC_BOOST: f32 = 0.2;
/// Duration of FEC boost after a network handoff.
const FEC_BOOST_DURATION_SECS: u64 = 10;
impl AdaptiveQualityController {
pub fn new() -> Self {
@@ -72,6 +132,9 @@ impl AdaptiveQualityController {
consecutive_down: 0,
history: VecDeque::with_capacity(HISTORY_SIZE),
forced: false,
network_context: NetworkContext::default(),
fec_boost_until: None,
fec_boost_amount: DEFAULT_FEC_BOOST,
}
}
@@ -80,6 +143,69 @@ impl AdaptiveQualityController {
self.current_tier
}
/// Get the current network context.
pub fn network_context(&self) -> NetworkContext {
self.network_context
}
/// Signal a network transport change (e.g., WiFi to cellular handoff).
///
/// When switching from WiFi to any cellular type, this preemptively
/// downgrades one quality tier and activates a temporary FEC boost.
pub fn signal_network_change(&mut self, new_context: NetworkContext) {
let old = self.network_context;
self.network_context = new_context;
let new_is_cellular = matches!(
new_context,
NetworkContext::CellularLte | NetworkContext::Cellular5g | NetworkContext::Cellular3g
);
// If switching from WiFi to cellular, preemptively downgrade one tier
if old == NetworkContext::WiFi && new_is_cellular {
if let Some(lower_tier) = self.current_tier.downgrade() {
self.current_tier = lower_tier;
self.current_profile = lower_tier.profile();
}
// Reset counters to avoid stale hysteresis state
self.consecutive_up = 0;
self.consecutive_down = 0;
// Un-force so adaptive logic resumes
self.forced = false;
}
// Activate FEC boost for any network change
self.fec_boost_until = Some(Instant::now() + Duration::from_secs(FEC_BOOST_DURATION_SECS));
}
/// Returns the FEC boost amount if within the handoff recovery window, 0.0 otherwise.
///
/// Callers should add this to their base FEC ratio during the boost window.
pub fn fec_boost(&self) -> f32 {
if let Some(until) = self.fec_boost_until {
if Instant::now() < until {
return self.fec_boost_amount;
}
}
0.0
}
/// Reset the hysteresis counters.
pub fn reset_counters(&mut self) {
self.consecutive_up = 0;
self.consecutive_down = 0;
}
/// Get the effective downgrade threshold based on network context.
fn downgrade_threshold(&self) -> u32 {
match self.network_context {
NetworkContext::CellularLte
| NetworkContext::Cellular5g
| NetworkContext::Cellular3g => CELLULAR_DOWNGRADE_THRESHOLD,
_ => DOWNGRADE_THRESHOLD,
}
}
fn try_transition(&mut self, observed_tier: Tier) -> Option<QualityProfile> {
if observed_tier == self.current_tier {
self.consecutive_up = 0;
@@ -96,7 +222,7 @@ impl AdaptiveQualityController {
if is_worse {
self.consecutive_up = 0;
self.consecutive_down += 1;
if self.consecutive_down >= DOWNGRADE_THRESHOLD {
if self.consecutive_down >= self.downgrade_threshold() {
self.current_tier = observed_tier;
self.current_profile = observed_tier.profile();
self.consecutive_down = 0;
@@ -142,7 +268,7 @@ impl QualityController for AdaptiveQualityController {
return None;
}
let observed = Tier::classify(report);
let observed = Tier::classify_with_context(report, self.network_context);
self.try_transition(observed)
}
@@ -246,4 +372,110 @@ mod tests {
assert_eq!(Tier::classify(&make_report(50.0, 200)), Tier::Catastrophic);
assert_eq!(Tier::classify(&make_report(5.0, 700)), Tier::Catastrophic);
}
// ---------------------------------------------------------------
// Network context tests
// ---------------------------------------------------------------
#[test]
fn cellular_tighter_thresholds() {
// 12% loss: Good on WiFi, Degraded on cellular
let report = make_report(12.0, 200);
assert_eq!(
Tier::classify_with_context(&report, NetworkContext::WiFi),
Tier::Degraded
);
assert_eq!(
Tier::classify_with_context(&report, NetworkContext::CellularLte),
Tier::Degraded
);
// 9% loss: Good on WiFi, Degraded on cellular
let report = make_report(9.0, 200);
assert_eq!(
Tier::classify_with_context(&report, NetworkContext::WiFi),
Tier::Good
);
assert_eq!(
Tier::classify_with_context(&report, NetworkContext::CellularLte),
Tier::Degraded
);
// 30% loss: Degraded on WiFi, Catastrophic on cellular
let report = make_report(30.0, 200);
assert_eq!(
Tier::classify_with_context(&report, NetworkContext::WiFi),
Tier::Degraded
);
assert_eq!(
Tier::classify_with_context(&report, NetworkContext::Cellular3g),
Tier::Catastrophic
);
}
#[test]
fn cellular_rtt_thresholds() {
// RTT 350ms: Good on WiFi, Degraded on cellular
let report = make_report(2.0, 348); // rtt_4ms rounds so use 348
assert_eq!(
Tier::classify_with_context(&report, NetworkContext::WiFi),
Tier::Good
);
assert_eq!(
Tier::classify_with_context(&report, NetworkContext::CellularLte),
Tier::Degraded
);
}
#[test]
fn cellular_faster_downgrade() {
let mut ctrl = AdaptiveQualityController::new();
ctrl.signal_network_change(NetworkContext::CellularLte);
// Reset tier back to Good for testing downgrade threshold
ctrl.current_tier = Tier::Good;
ctrl.current_profile = Tier::Good.profile();
// On cellular, downgrade threshold is 2 instead of 3
let bad = make_report(50.0, 200);
assert!(ctrl.observe(&bad).is_none()); // 1st bad
let result = ctrl.observe(&bad); // 2nd bad — should trigger on cellular
assert!(result.is_some());
}
#[test]
fn signal_network_change_preemptive_downgrade() {
let mut ctrl = AdaptiveQualityController::new();
assert_eq!(ctrl.tier(), Tier::Good);
// Switch from WiFi to cellular
ctrl.network_context = NetworkContext::WiFi;
ctrl.signal_network_change(NetworkContext::CellularLte);
// Should have downgraded one tier: Good -> Degraded
assert_eq!(ctrl.tier(), Tier::Degraded);
}
#[test]
fn signal_network_change_fec_boost() {
let mut ctrl = AdaptiveQualityController::new();
assert_eq!(ctrl.fec_boost(), 0.0);
ctrl.signal_network_change(NetworkContext::CellularLte);
// FEC boost should be active
assert!(ctrl.fec_boost() > 0.0);
assert_eq!(ctrl.fec_boost(), DEFAULT_FEC_BOOST);
}
#[test]
fn tier_downgrade() {
assert_eq!(Tier::Good.downgrade(), Some(Tier::Degraded));
assert_eq!(Tier::Degraded.downgrade(), Some(Tier::Catastrophic));
assert_eq!(Tier::Catastrophic.downgrade(), None);
}
#[test]
fn network_context_default() {
assert_eq!(NetworkContext::default(), NetworkContext::Unknown);
}
}

8
crates/wzp-proto/src/traits.rs
View File

@@ -132,6 +132,14 @@ pub trait CryptoSession: Send + Sync {
fn overhead(&self) -> usize {
16 // ChaCha20-Poly1305 tag
}
/// Short Authentication String (SAS) — 4-digit code for verbal verification.
/// Both peers derive the same code from the shared secret + identity keys.
/// If a MITM relay is intercepting, the codes will differ.
/// Returns None if SAS was not computed (e.g., relay-side sessions).
fn sas_code(&self) -> Option<u32> {
None
}
}
/// Key exchange using the Warzone identity model.

7
crates/wzp-relay/Cargo.toml
View File

@@ -25,7 +25,12 @@ serde_json = "1"
rustls = { version = "0.23", default-features = false, features = ["ring", "std"] }
quinn = { workspace = true }
prometheus = "0.13"
axum = { version = "0.7", default-features = false, features = ["tokio", "http1"] }
axum = { version = "0.7", default-features = false, features = ["tokio", "http1", "ws"] }
tower-http = { version = "0.6", features = ["fs"] }
futures-util = "0.3"
dirs = "6"
sha2 = { workspace = true }
chrono = "0.4"
[[bin]]
name = "wzp-relay"

18
crates/wzp-relay/build.rs Normal file
View File

@@ -0,0 +1,18 @@
use std::process::Command;
fn main() {
// Get git hash at build time
let output = Command::new("git")
.args(["rev-parse", "--short", "HEAD"])
.output();
let hash = match output {
Ok(o) if o.status.success() => {
String::from_utf8_lossy(&o.stdout).trim().to_string()
}
_ => "unknown".to_string(),
};
println!("cargo:rustc-env=WZP_BUILD_HASH={hash}");
println!("cargo:rerun-if-changed=.git/HEAD");
}

199
crates/wzp-relay/src/call_registry.rs Normal file
View File

@@ -0,0 +1,199 @@
//! Direct call state tracking.
//!
//! Manages the lifecycle of 1:1 direct calls placed via the `_signal` channel.
//! Each call goes through: Pending → Ringing → Active → Ended.
use std::collections::HashMap;
use std::time::{Duration, Instant};
/// State of a direct call.
#[derive(Clone, Copy, Debug, PartialEq, Eq)]
pub enum DirectCallState {
/// Offer sent to callee, waiting for response.
Pending,
/// Callee acknowledged, ringing.
Ringing,
/// Call accepted, media room active.
Active,
/// Call ended (hangup, reject, timeout, or error).
Ended,
}
/// A tracked direct call between two users.
pub struct DirectCall {
pub call_id: String,
pub caller_fingerprint: String,
pub callee_fingerprint: String,
pub state: DirectCallState,
pub accept_mode: Option<wzp_proto::CallAcceptMode>,
/// Private room name (set when accepted).
pub room_name: Option<String>,
pub created_at: Instant,
pub answered_at: Option<Instant>,
pub ended_at: Option<Instant>,
}
/// Registry of active direct calls.
pub struct CallRegistry {
calls: HashMap<String, DirectCall>,
}
impl CallRegistry {
pub fn new() -> Self {
Self {
calls: HashMap::new(),
}
}
/// Create a new pending call. Returns the call_id.
pub fn create_call(&mut self, call_id: String, caller_fp: String, callee_fp: String) -> &DirectCall {
let call = DirectCall {
call_id: call_id.clone(),
caller_fingerprint: caller_fp,
callee_fingerprint: callee_fp,
state: DirectCallState::Pending,
accept_mode: None,
room_name: None,
created_at: Instant::now(),
answered_at: None,
ended_at: None,
};
self.calls.insert(call_id.clone(), call);
self.calls.get(&call_id).unwrap()
}
/// Get a call by ID.
pub fn get(&self, call_id: &str) -> Option<&DirectCall> {
self.calls.get(call_id)
}
/// Get a mutable call by ID.
pub fn get_mut(&mut self, call_id: &str) -> Option<&mut DirectCall> {
self.calls.get_mut(call_id)
}
/// Transition to Ringing state.
pub fn set_ringing(&mut self, call_id: &str) -> bool {
if let Some(call) = self.calls.get_mut(call_id) {
if call.state == DirectCallState::Pending {
call.state = DirectCallState::Ringing;
return true;
}
}
false
}
/// Transition to Active state.
pub fn set_active(&mut self, call_id: &str, mode: wzp_proto::CallAcceptMode, room: String) -> bool {
if let Some(call) = self.calls.get_mut(call_id) {
if call.state == DirectCallState::Pending || call.state == DirectCallState::Ringing {
call.state = DirectCallState::Active;
call.accept_mode = Some(mode);
call.room_name = Some(room);
call.answered_at = Some(Instant::now());
return true;
}
}
false
}
/// End a call.
pub fn end_call(&mut self, call_id: &str) -> Option<DirectCall> {
if let Some(call) = self.calls.get_mut(call_id) {
call.state = DirectCallState::Ended;
call.ended_at = Some(Instant::now());
}
self.calls.remove(call_id)
}
/// Find active/pending calls involving a fingerprint.
pub fn calls_for_fingerprint(&self, fp: &str) -> Vec<&DirectCall> {
self.calls.values()
.filter(|c| {
c.state != DirectCallState::Ended
&& (c.caller_fingerprint == fp || c.callee_fingerprint == fp)
})
.collect()
}
/// Find the peer's fingerprint in a call.
pub fn peer_fingerprint(&self, call_id: &str, my_fp: &str) -> Option<&str> {
self.calls.get(call_id).map(|c| {
if c.caller_fingerprint == my_fp {
c.callee_fingerprint.as_str()
} else {
c.caller_fingerprint.as_str()
}
})
}
/// Remove calls that have been pending longer than the timeout.
/// Returns call IDs of expired calls.
pub fn expire_stale(&mut self, timeout: Duration) -> Vec<DirectCall> {
let now = Instant::now();
let expired: Vec<String> = self.calls.iter()
.filter(|(_, c)| {
c.state == DirectCallState::Pending
&& now.duration_since(c.created_at) > timeout
})
.map(|(id, _)| id.clone())
.collect();
expired.into_iter()
.filter_map(|id| self.calls.remove(&id))
.collect()
}
/// Number of active (non-ended) calls.
pub fn active_count(&self) -> usize {
self.calls.values()
.filter(|c| c.state != DirectCallState::Ended)
.count()
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn call_lifecycle() {
let mut reg = CallRegistry::new();
reg.create_call("c1".into(), "alice".into(), "bob".into());
assert_eq!(reg.get("c1").unwrap().state, DirectCallState::Pending);
assert!(reg.set_ringing("c1"));
assert_eq!(reg.get("c1").unwrap().state, DirectCallState::Ringing);
assert!(reg.set_active("c1", wzp_proto::CallAcceptMode::AcceptGeneric, "_call:c1".into()));
assert_eq!(reg.get("c1").unwrap().state, DirectCallState::Active);
assert_eq!(reg.get("c1").unwrap().room_name.as_deref(), Some("_call:c1"));
let ended = reg.end_call("c1").unwrap();
assert_eq!(ended.state, DirectCallState::Ended);
assert_eq!(reg.active_count(), 0);
}
#[test]
fn expire_stale_calls() {
let mut reg = CallRegistry::new();
reg.create_call("c1".into(), "alice".into(), "bob".into());
// Not expired yet
let expired = reg.expire_stale(Duration::from_secs(30));
assert!(expired.is_empty());
// Force expiry with 0 timeout
let expired = reg.expire_stale(Duration::from_secs(0));
assert_eq!(expired.len(), 1);
assert_eq!(expired[0].call_id, "c1");
}
#[test]
fn peer_lookup() {
let mut reg = CallRegistry::new();
reg.create_call("c1".into(), "alice".into(), "bob".into());
assert_eq!(reg.peer_fingerprint("c1", "alice"), Some("bob"));
assert_eq!(reg.peer_fingerprint("c1", "bob"), Some("alice"));
}
}

152
crates/wzp-relay/src/config.rs
View File

@@ -3,8 +3,41 @@
use serde::{Deserialize, Serialize};
use std::net::SocketAddr;
/// Configuration for the relay daemon.
/// A federated peer relay.
#[derive(Clone, Debug, Serialize, Deserialize)]
pub struct PeerConfig {
/// Address of the peer relay (e.g., "193.180.213.68:4433").
pub url: String,
/// Expected TLS certificate fingerprint (hex, with colons).
pub fingerprint: String,
/// Optional human-readable label.
#[serde(default)]
pub label: Option<String>,
}
/// A trusted relay — accepts inbound federation without needing the peer's address.
#[derive(Clone, Debug, Serialize, Deserialize)]
pub struct TrustedConfig {
/// Expected TLS certificate fingerprint (hex, with colons).
pub fingerprint: String,
/// Optional human-readable label.
#[serde(default)]
pub label: Option<String>,
}
/// A room declared global — bridged across all federated peers.
#[derive(Clone, Debug, Serialize, Deserialize)]
pub struct GlobalRoomConfig {
/// Room name to bridge (e.g., "android").
pub name: String,
}
/// Configuration for the relay daemon.
///
/// All fields have defaults, so a minimal TOML file only needs the
/// fields you want to override (e.g., just `[[peers]]`).
#[derive(Clone, Debug, Serialize, Deserialize)]
#[serde(default)]
pub struct RelayConfig {
/// Address to listen on for incoming connections (client-facing).
pub listen_addr: SocketAddr,
@@ -39,6 +72,27 @@ pub struct RelayConfig {
/// reducing per-packet QUIC datagram overhead.
#[serde(default)]
pub trunking_enabled: bool,
/// Port for the WebSocket listener (browser clients connect here).
/// If None, WebSocket support is disabled.
pub ws_port: Option<u16>,
/// Directory to serve static files from (HTML/JS/WASM for web clients).
pub static_dir: Option<String>,
/// Federation peer relays.
#[serde(default)]
pub peers: Vec<PeerConfig>,
/// Global rooms bridged across federation.
#[serde(default)]
pub global_rooms: Vec<GlobalRoomConfig>,
/// Trusted relay fingerprints — accept inbound federation from these relays.
/// Unlike [[peers]], no url is needed — the peer connects to us.
#[serde(default)]
pub trusted: Vec<TrustedConfig>,
/// Debug tap: log packet headers for matching rooms ("*" = all rooms).
/// Activated via --debug-tap <room> or debug_tap = "room" in TOML.
pub debug_tap: Option<String>,
/// JSONL event log path for protocol analysis (--event-log).
#[serde(skip)]
pub event_log: Option<String>,
}
impl Default for RelayConfig {
@@ -55,6 +109,102 @@ impl Default for RelayConfig {
probe_targets: Vec::new(),
probe_mesh: false,
trunking_enabled: false,
ws_port: None,
static_dir: None,
peers: Vec::new(),
global_rooms: Vec::new(),
trusted: Vec::new(),
debug_tap: None,
event_log: None,
}
}
}
/// Load relay configuration from a TOML file.
pub fn load_config(path: &str) -> Result<RelayConfig, anyhow::Error> {
let content = std::fs::read_to_string(path)?;
let config: RelayConfig = toml::from_str(&content)?;
Ok(config)
}
/// Info about this relay instance, used to generate personalized example configs.
pub struct RelayInfo {
pub listen_addr: String,
pub tls_fingerprint: String,
pub public_ip: Option<String>,
}
/// Load config from path, or create a personalized example config if it doesn't exist.
pub fn load_or_create_config(path: &str, info: Option<&RelayInfo>) -> Result<RelayConfig, anyhow::Error> {
let p = std::path::Path::new(path);
if p.exists() {
return load_config(path);
}
// Create parent directory if needed
if let Some(parent) = p.parent() {
std::fs::create_dir_all(parent)?;
}
// Generate personalized example config
let example = generate_example_config(info);
std::fs::write(p, &example)?;
eprintln!("Created example config at {path} — edit it and restart.");
let config: RelayConfig = toml::from_str(&example)?;
Ok(config)
}
/// Generate an example TOML config, personalized with this relay's info if available.
fn generate_example_config(info: Option<&RelayInfo>) -> String {
let listen = info.map(|i| i.listen_addr.as_str()).unwrap_or("0.0.0.0:4433");
let peer_example = if let Some(i) = info {
let ip = i.public_ip.as_deref().unwrap_or("this-relay-ip");
format!(
r#"# Other relays can peer with this relay using:
# [[peers]]
# url = "{ip}:{port}"
# fingerprint = "{fp}"
# label = "This Relay""#,
port = listen.rsplit(':').next().unwrap_or("4433"),
fp = i.tls_fingerprint,
)
} else {
"# To peer with another relay, add its url + fingerprint:".to_string()
};
format!(
r#"# WarzonePhone Relay Configuration
# See docs/ADMINISTRATION.md for full reference.
# Listen address for client connections
listen_addr = "{listen}"
# Maximum concurrent sessions
# max_sessions = 100
# Prometheus metrics endpoint (uncomment to enable)
# metrics_port = 9090
# featherChat auth endpoint (uncomment to enable)
# auth_url = "https://chat.example.com/v1/auth/validate"
{peer_example}
# Federation: peer relays we connect to (outbound)
# [[peers]]
# url = "other-relay.example.com:4433"
# fingerprint = "aa:bb:cc:dd:..."
# label = "Relay B"
# Federation: relays we trust inbound connections from
# [[trusted]]
# fingerprint = "ee:ff:00:11:..."
# label = "Relay X"
# Global rooms bridged across all federated peers
# [[global_rooms]]
# name = "general"
# Debug: log packet headers for a room ("*" for all)
# debug_tap = "*"
"#
)
}

201
crates/wzp-relay/src/event_log.rs Normal file
View File

@@ -0,0 +1,201 @@
//! JSONL event log for protocol analysis.
//!
//! When `--event-log <path>` is set, every media packet emits a structured
//! event at each decision point (recv, forward, drop, deliver).
//! Use `wzp-analyzer` to correlate events across multiple relays.
use std::path::PathBuf;
use std::sync::Arc;
use serde::Serialize;
use tokio::sync::mpsc;
use tracing::{error, info};
/// A single protocol event for JSONL output.
#[derive(Debug, Serialize)]
pub struct Event {
/// ISO 8601 timestamp with microseconds.
pub ts: String,
/// Event type.
pub event: &'static str,
/// Room name.
#[serde(skip_serializing_if = "Option::is_none")]
pub room: Option<String>,
/// Source address or peer label.
#[serde(skip_serializing_if = "Option::is_none")]
pub src: Option<String>,
/// Packet sequence number.
#[serde(skip_serializing_if = "Option::is_none")]
pub seq: Option<u16>,
/// Codec identifier.
#[serde(skip_serializing_if = "Option::is_none")]
pub codec: Option<String>,
/// FEC block ID.
#[serde(skip_serializing_if = "Option::is_none")]
pub fec_block: Option<u8>,
/// FEC symbol index.
#[serde(skip_serializing_if = "Option::is_none")]
pub fec_sym: Option<u8>,
/// Is FEC repair packet.
#[serde(skip_serializing_if = "Option::is_none")]
pub repair: Option<bool>,
/// Payload length in bytes.
#[serde(skip_serializing_if = "Option::is_none")]
pub len: Option<usize>,
/// Number of recipients.
#[serde(skip_serializing_if = "Option::is_none")]
pub to_count: Option<usize>,
/// Peer label (for federation events).
#[serde(skip_serializing_if = "Option::is_none")]
pub peer: Option<String>,
/// Drop/error reason.
#[serde(skip_serializing_if = "Option::is_none")]
pub reason: Option<String>,
/// Presence action (active/inactive).
#[serde(skip_serializing_if = "Option::is_none")]
pub action: Option<String>,
/// Participant count (presence events).
#[serde(skip_serializing_if = "Option::is_none")]
pub participants: Option<usize>,
}
impl Event {
fn now() -> String {
chrono::Utc::now().format("%Y-%m-%dT%H:%M:%S%.6fZ").to_string()
}
/// Create a minimal event with just type and timestamp.
pub fn new(event: &'static str) -> Self {
Self {
ts: Self::now(),
event,
room: None,
src: None,
seq: None,
codec: None,
fec_block: None,
fec_sym: None,
repair: None,
len: None,
to_count: None,
peer: None,
reason: None,
action: None,
participants: None,
}
}
/// Set room.
pub fn room(mut self, room: &str) -> Self { self.room = Some(room.to_string()); self }
/// Set source.
pub fn src(mut self, src: &str) -> Self { self.src = Some(src.to_string()); self }
/// Set packet header fields from a MediaPacket.
pub fn packet(mut self, pkt: &wzp_proto::MediaPacket) -> Self {
self.seq = Some(pkt.header.seq);
self.codec = Some(format!("{:?}", pkt.header.codec_id));
self.fec_block = Some(pkt.header.fec_block);
self.fec_sym = Some(pkt.header.fec_symbol);
self.repair = Some(pkt.header.is_repair);
self.len = Some(pkt.payload.len());
self
}
/// Set seq only (when full packet not available).
pub fn seq(mut self, seq: u16) -> Self { self.seq = Some(seq); self }
/// Set payload length.
pub fn len(mut self, len: usize) -> Self { self.len = Some(len); self }
/// Set recipient count.
pub fn to_count(mut self, n: usize) -> Self { self.to_count = Some(n); self }
/// Set peer label.
pub fn peer(mut self, peer: &str) -> Self { self.peer = Some(peer.to_string()); self }
/// Set drop reason.
pub fn reason(mut self, reason: &str) -> Self { self.reason = Some(reason.to_string()); self }
/// Set presence action.
pub fn action(mut self, action: &str) -> Self { self.action = Some(action.to_string()); self }
/// Set participant count.
pub fn participants(mut self, n: usize) -> Self { self.participants = Some(n); self }
}
/// Handle for emitting events. Cheap to clone.
#[derive(Clone)]
pub struct EventLog {
tx: mpsc::UnboundedSender<Event>,
}
impl EventLog {
/// Emit an event (non-blocking, drops if channel is full).
pub fn emit(&self, event: Event) {
let _ = self.tx.send(event);
}
}
/// No-op event log for when `--event-log` is not set.
/// All methods are no-ops that compile to nothing.
#[derive(Clone)]
pub struct NoopEventLog;
/// Unified event log handle — either real or no-op.
#[derive(Clone)]
pub enum EventLogger {
Active(EventLog),
Noop,
}
impl EventLogger {
pub fn emit(&self, event: Event) {
if let EventLogger::Active(log) = self {
log.emit(event);
}
}
pub fn is_active(&self) -> bool {
matches!(self, EventLogger::Active(_))
}
}
/// Start the event log writer. Returns an `EventLogger` handle.
pub fn start_event_log(path: Option<PathBuf>) -> EventLogger {
match path {
Some(path) => {
let (tx, rx) = mpsc::unbounded_channel();
tokio::spawn(writer_task(path, rx));
info!("event log enabled");
EventLogger::Active(EventLog { tx })
}
None => EventLogger::Noop,
}
}
/// Background task that writes events to a JSONL file.
async fn writer_task(path: PathBuf, mut rx: mpsc::UnboundedReceiver<Event>) {
use tokio::io::AsyncWriteExt;
let file = match tokio::fs::File::create(&path).await {
Ok(f) => f,
Err(e) => {
error!("failed to create event log {}: {e}", path.display());
return;
}
};
let mut writer = tokio::io::BufWriter::new(file);
let mut count: u64 = 0;
while let Some(event) = rx.recv().await {
match serde_json::to_string(&event) {
Ok(json) => {
if writer.write_all(json.as_bytes()).await.is_err() { break; }
if writer.write_all(b"\n").await.is_err() { break; }
count += 1;
// Flush every 100 events
if count % 100 == 0 {
let _ = writer.flush().await;
}
}
Err(e) => {
error!("event log serialize error: {e}");
}
}
}
let _ = writer.flush().await;
info!(events = count, "event log closed");
}

966
crates/wzp-relay/src/federation.rs Normal file
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//! Relay federation — global room routing between peer relays.
//!
//! Each relay maintains a forwarding table per global room. When a local participant
//! sends media in a global room, it's forwarded to all peer relays that have the room
//! active. Incoming federated media is delivered to local participants and optionally
//! forwarded to other active peers (multi-hop).
use std::collections::{HashMap, HashSet};
use std::net::SocketAddr;
use std::sync::Arc;
use std::time::{Duration, Instant};
use bytes::Bytes;
use sha2::{Sha256, Digest};
use tokio::sync::Mutex;
use tracing::{error, info, warn};
use wzp_proto::{MediaTransport, SignalMessage};
use wzp_transport::QuinnTransport;
use crate::config::{PeerConfig, TrustedConfig};
use crate::event_log::{Event, EventLogger};
use crate::room::{self, FederationMediaOut, RoomEvent, RoomManager};
/// Compute 8-byte room hash for federation datagram tagging.
pub fn room_hash(room_name: &str) -> [u8; 8] {
let h = Sha256::digest(room_name.as_bytes());
let mut out = [0u8; 8];
out.copy_from_slice(&h[..8]);
out
}
/// Normalize a fingerprint string (remove colons, lowercase).
fn normalize_fp(fp: &str) -> String {
fp.replace(':', "").to_lowercase()
}
/// Time-based dedup filter for federation datagrams.
/// Tracks recently seen packets and expires entries older than 2 seconds.
/// This prevents duplicate delivery when the same packet arrives via
/// multiple federation paths, while allowing new senders that happen to
/// reuse the same seq numbers.
struct Deduplicator {
/// Recently seen packet keys with insertion time.
entries: HashMap<u64, Instant>,
/// Expiry duration.
ttl: Duration,
}
impl Deduplicator {
fn new(_capacity: usize) -> Self {
Self {
entries: HashMap::with_capacity(512),
ttl: Duration::from_secs(2),
}
}
/// Returns true if this packet is a duplicate (already seen within TTL).
fn is_dup(&mut self, room_hash: &[u8; 8], seq: u16, extra: u64) -> bool {
let key = u64::from_be_bytes(*room_hash) ^ (seq as u64) ^ extra;
let now = Instant::now();
// Periodic cleanup (every ~256 packets)
if self.entries.len() > 256 {
self.entries.retain(|_, ts| now.duration_since(*ts) < self.ttl);
}
if let Some(ts) = self.entries.get(&key) {
if now.duration_since(*ts) < self.ttl {
return true; // seen recently — duplicate
}
}
self.entries.insert(key, now);
false
}
}
/// Per-room token bucket rate limiter for federation forwarding.
struct RateLimiter {
/// Max packets per second per room.
max_pps: u32,
/// Tokens remaining in current window.
tokens: u32,
/// When the current window started.
window_start: Instant,
}
impl RateLimiter {
fn new(max_pps: u32) -> Self {
Self {
max_pps,
tokens: max_pps,
window_start: Instant::now(),
}
}
/// Returns true if the packet should be allowed through.
fn allow(&mut self) -> bool {
let elapsed = self.window_start.elapsed();
if elapsed >= Duration::from_secs(1) {
self.tokens = self.max_pps;
self.window_start = Instant::now();
}
if self.tokens > 0 {
self.tokens -= 1;
true
} else {
false
}
}
}
/// Active link to a peer relay.
struct PeerLink {
transport: Arc<QuinnTransport>,
label: String,
/// Global rooms that this peer has reported as active.
active_rooms: HashSet<String>,
/// Remote participants per room (for federated presence in RoomUpdate).
remote_participants: HashMap<String, Vec<wzp_proto::packet::RoomParticipant>>,
/// Last time we received any data (signal or media) from this peer.
last_seen: Instant,
}
/// Max federation packets per second per room (0 = unlimited).
const FEDERATION_RATE_LIMIT_PPS: u32 = 500;
/// Dedup window size (number of recent packets to remember).
const DEDUP_WINDOW_SIZE: usize = 4096;
/// Remote participants are considered stale after this duration with no updates.
const REMOTE_PARTICIPANT_STALE_SECS: u64 = 15;
/// Manages federation connections and global room forwarding.
pub struct FederationManager {
peers: Vec<PeerConfig>,
trusted: Vec<TrustedConfig>,
global_rooms: HashSet<String>,
room_mgr: Arc<Mutex<RoomManager>>,
endpoint: quinn::Endpoint,
local_tls_fp: String,
metrics: Arc<crate::metrics::RelayMetrics>,
/// Active peer connections, keyed by normalized fingerprint.
peer_links: Arc<Mutex<HashMap<String, PeerLink>>>,
/// Dedup filter for incoming federation datagrams.
dedup: Mutex<Deduplicator>,
/// Per-room seq counter for federation media delivered to local clients.
/// Ensures clients see monotonically increasing seq regardless of federation sender.
local_delivery_seq: std::sync::atomic::AtomicU16,
/// JSONL event log for protocol analysis.
event_log: EventLogger,
/// Per-room rate limiters for inbound federation media.
rate_limiters: Mutex<HashMap<String, RateLimiter>>,
}
impl FederationManager {
pub fn new(
peers: Vec<PeerConfig>,
trusted: Vec<TrustedConfig>,
global_rooms: HashSet<String>,
room_mgr: Arc<Mutex<RoomManager>>,
endpoint: quinn::Endpoint,
local_tls_fp: String,
metrics: Arc<crate::metrics::RelayMetrics>,
event_log: EventLogger,
) -> Self {
Self {
peers,
trusted,
global_rooms,
room_mgr,
endpoint,
local_tls_fp,
metrics,
peer_links: Arc::new(Mutex::new(HashMap::new())),
dedup: Mutex::new(Deduplicator::new(DEDUP_WINDOW_SIZE)),
local_delivery_seq: std::sync::atomic::AtomicU16::new(0),
event_log,
rate_limiters: Mutex::new(HashMap::new()),
}
}
/// Check if a room name (which may be hashed) is a global room.
pub fn is_global_room(&self, room: &str) -> bool {
self.resolve_global_room(room).is_some()
}
/// Resolve a room name (raw or hashed) to the canonical global room name.
/// Returns the configured global room name if it matches.
pub fn resolve_global_room(&self, room: &str) -> Option<&str> {
// Direct match (raw room name, e.g. Android clients)
if self.global_rooms.contains(room) {
return Some(self.global_rooms.iter().find(|n| n.as_str() == room).unwrap());
}
// Hashed match (desktop clients hash room names for SNI privacy)
self.global_rooms.iter().find(|name| {
wzp_crypto::hash_room_name(name) == room
}).map(|s| s.as_str())
}
/// Get the canonical federation room hash for a room.
/// Always uses the configured global room name, not the client-provided name.
pub fn global_room_hash(&self, room: &str) -> [u8; 8] {
if let Some(canonical) = self.resolve_global_room(room) {
room_hash(canonical)
} else {
room_hash(room)
}
}
/// Start federation — spawns connection loops + event dispatcher.
pub async fn run(self: Arc<Self>) {
if self.peers.is_empty() && self.global_rooms.is_empty() {
return;
}
info!(
peers = self.peers.len(),
global_rooms = self.global_rooms.len(),
"federation starting"
);
let mut handles = Vec::new();
// Per-peer outbound connection loops
for peer in &self.peers {
let this = self.clone();
let peer = peer.clone();
handles.push(tokio::spawn(async move {
run_peer_loop(this, peer).await;
}));
}
// Room event dispatcher
let room_events = {
let mgr = self.room_mgr.lock().await;
mgr.subscribe_events()
};
let this = self.clone();
handles.push(tokio::spawn(async move {
run_room_event_dispatcher(this, room_events).await;
}));
// Stale presence sweeper — purges remote participants from dead peers
let this = self.clone();
handles.push(tokio::spawn(async move {
run_stale_presence_sweeper(this).await;
}));
for h in handles {
let _ = h.await;
}
}
/// Handle an inbound federation connection from a recognized peer.
pub async fn handle_inbound(
self: &Arc<Self>,
transport: Arc<QuinnTransport>,
peer_config: PeerConfig,
) {
let peer_fp = normalize_fp(&peer_config.fingerprint);
let label = peer_config.label.unwrap_or_else(|| peer_config.url.clone());
info!(peer = %label, "inbound federation link active");
if let Err(e) = run_federation_link(self.clone(), transport, peer_fp, label.clone()).await {
warn!(peer = %label, "inbound federation link ended: {e}");
}
}
/// Get all remote participants for a room from all peer links.
/// Deduplicates by fingerprint (same participant may appear via multiple links).
pub async fn get_remote_participants(&self, room: &str) -> Vec<wzp_proto::packet::RoomParticipant> {
let canonical = self.resolve_global_room(room);
let links = self.peer_links.lock().await;
let mut result = Vec::new();
for link in links.values() {
// Check canonical name
if let Some(c) = canonical {
if let Some(remote) = link.remote_participants.get(c) {
result.extend(remote.iter().cloned());
}
// Also check raw room name, but only if different from canonical
if c != room {
if let Some(remote) = link.remote_participants.get(room) {
result.extend(remote.iter().cloned());
}
}
} else {
if let Some(remote) = link.remote_participants.get(room) {
result.extend(remote.iter().cloned());
}
}
}
// Deduplicate by fingerprint
let mut seen = HashSet::new();
result.retain(|p| seen.insert(p.fingerprint.clone()));
result
}
/// Forward locally-generated media to all connected peers.
/// For locally-originated media, we send to ALL peers (they decide whether to deliver).
/// For forwarded media (multi-hop), handle_datagram filters by active_rooms.
pub async fn forward_to_peers(&self, room_name: &str, room_hash: &[u8; 8], media_data: &Bytes) {
let links = self.peer_links.lock().await;
if links.is_empty() {
return;
}
for (_fp, link) in links.iter() {
let mut tagged = Vec::with_capacity(8 + media_data.len());
tagged.extend_from_slice(room_hash);
tagged.extend_from_slice(media_data);
match link.transport.send_raw_datagram(&tagged) {
Ok(()) => {
self.metrics.federation_packets_forwarded
.with_label_values(&[&link.label, "out"]).inc();
}
Err(e) => warn!(peer = %link.label, "federation send error: {e}"),
}
}
}
// ── Trust verification (kept from previous implementation) ──
pub fn find_peer_by_fingerprint(&self, fp: &str) -> Option<&PeerConfig> {
self.peers.iter().find(|p| normalize_fp(&p.fingerprint) == normalize_fp(fp))
}
pub fn find_peer_by_addr(&self, addr: SocketAddr) -> Option<&PeerConfig> {
let addr_ip = addr.ip();
self.peers.iter().find(|p| {
p.url.parse::<SocketAddr>()
.map(|sa| sa.ip() == addr_ip)
.unwrap_or(false)
})
}
pub fn find_trusted_by_fingerprint(&self, fp: &str) -> Option<&TrustedConfig> {
self.trusted.iter().find(|t| normalize_fp(&t.fingerprint) == normalize_fp(fp))
}
pub fn check_inbound_trust(&self, addr: SocketAddr, hello_fp: &str) -> Option<String> {
if let Some(peer) = self.find_peer_by_addr(addr) {
return Some(peer.label.clone().unwrap_or_else(|| peer.url.clone()));
}
if let Some(trusted) = self.find_trusted_by_fingerprint(hello_fp) {
return Some(trusted.label.clone().unwrap_or_else(|| hello_fp[..16].to_string()));
}
None
}
}
// ── Outbound media egress task ──
/// Drains the federation media channel and forwards to active peers.
pub async fn run_federation_media_egress(
fm: Arc<FederationManager>,
mut rx: tokio::sync::mpsc::Receiver<FederationMediaOut>,
) {
let mut count: u64 = 0;
while let Some(out) = rx.recv().await {
count += 1;
if count == 1 || count % 250 == 0 {
info!(room = %out.room_name, count, "federation egress: forwarding media");
}
fm.forward_to_peers(&out.room_name, &out.room_hash, &out.data).await;
}
info!(total = count, "federation egress task ended");
}
// ── Room event dispatcher ──
/// Watches RoomManager events and sends GlobalRoomActive/Inactive to peers.
async fn run_room_event_dispatcher(
fm: Arc<FederationManager>,
mut events: tokio::sync::broadcast::Receiver<RoomEvent>,
) {
loop {
match events.recv().await {
Ok(RoomEvent::LocalJoin { room }) => {
if fm.is_global_room(&room) {
let participants = {
let mgr = fm.room_mgr.lock().await;
mgr.local_participant_list(&room)
};
info!(room = %room, count = participants.len(), "global room now active, announcing to peers");
let msg = SignalMessage::GlobalRoomActive { room, participants };
let links = fm.peer_links.lock().await;
for link in links.values() {
let _ = link.transport.send_signal(&msg).await;
}
}
}
Ok(RoomEvent::LocalLeave { room }) => {
if fm.is_global_room(&room) {
info!(room = %room, "global room now inactive, announcing to peers");
let msg = SignalMessage::GlobalRoomInactive { room };
let links = fm.peer_links.lock().await;
for link in links.values() {
let _ = link.transport.send_signal(&msg).await;
}
}
}
Err(tokio::sync::broadcast::error::RecvError::Lagged(n)) => {
warn!(missed = n, "room event receiver lagged");
}
Err(tokio::sync::broadcast::error::RecvError::Closed) => break,
}
}
}
// ── Stale presence sweeper ──
/// Periodically checks for stale remote participants and purges them.
/// This handles the case where a peer link dies without sending GlobalRoomInactive
/// (e.g., QUIC timeout, network partition, crash).
async fn run_stale_presence_sweeper(fm: Arc<FederationManager>) {
let mut interval = tokio::time::interval(Duration::from_secs(5));
loop {
interval.tick().await;
let stale_threshold = Duration::from_secs(REMOTE_PARTICIPANT_STALE_SECS);
// Find peers with stale remote_participants whose link is also gone or idle
let stale_rooms: Vec<(String, String)> = {
let links = fm.peer_links.lock().await;
let mut stale = Vec::new();
for (fp, link) in links.iter() {
if link.last_seen.elapsed() > stale_threshold && !link.remote_participants.is_empty() {
for room in link.remote_participants.keys() {
stale.push((fp.clone(), room.clone()));
}
}
}
stale
};
if stale_rooms.is_empty() {
continue;
}
// Purge stale entries and collect affected rooms
let mut affected_rooms = HashSet::new();
{
let mut links = fm.peer_links.lock().await;
for (fp, room) in &stale_rooms {
if let Some(link) = links.get_mut(fp.as_str()) {
if link.last_seen.elapsed() > stale_threshold {
info!(peer = %link.label, room = %room, "purging stale remote participants (no data for {}s)", link.last_seen.elapsed().as_secs());
link.remote_participants.remove(room);
link.active_rooms.remove(room);
affected_rooms.insert(room.clone());
}
}
}
}
// Broadcast updated RoomUpdate for affected rooms
for room in &affected_rooms {
let mgr = fm.room_mgr.lock().await;
for local_room in mgr.active_rooms() {
if fm.resolve_global_room(&local_room) == fm.resolve_global_room(room) {
let mut all_participants = mgr.local_participant_list(&local_room);
let remote = fm.get_remote_participants(&local_room).await;
all_participants.extend(remote);
let mut seen = HashSet::new();
all_participants.retain(|p| seen.insert(p.fingerprint.clone()));
let update = SignalMessage::RoomUpdate {
count: all_participants.len() as u32,
participants: all_participants,
};
let senders = mgr.local_senders(&local_room);
drop(mgr);
room::broadcast_signal(&senders, &update).await;
info!(room = %room, "swept stale presence — broadcast updated RoomUpdate");
break;
}
}
}
}
}
// ── Peer connection management ──
/// Persistent connection loop for one peer — reconnects with backoff.
async fn run_peer_loop(fm: Arc<FederationManager>, peer: PeerConfig) {
let mut backoff = Duration::from_secs(5);
loop {
info!(peer_url = %peer.url, label = ?peer.label, "federation: connecting to peer...");
match connect_to_peer(&fm, &peer).await {
Ok(transport) => {
backoff = Duration::from_secs(5);
let peer_fp = normalize_fp(&peer.fingerprint);
let label = peer.label.clone().unwrap_or_else(|| peer.url.clone());
if let Err(e) = run_federation_link(fm.clone(), transport, peer_fp, label).await {
warn!(peer_url = %peer.url, "federation link ended: {e}");
}
}
Err(e) => {
warn!(peer_url = %peer.url, backoff_s = backoff.as_secs(), "federation connect failed: {e}");
}
}
tokio::time::sleep(backoff).await;
backoff = (backoff * 2).min(Duration::from_secs(300));
}
}
/// Connect to a peer relay and send hello.
async fn connect_to_peer(fm: &FederationManager, peer: &PeerConfig) -> Result<Arc<QuinnTransport>, anyhow::Error> {
let addr: SocketAddr = peer.url.parse()?;
let client_cfg = wzp_transport::client_config();
let conn = wzp_transport::connect(&fm.endpoint, addr, "_federation", client_cfg).await?;
let transport = Arc::new(QuinnTransport::new(conn));
// Send hello with our TLS fingerprint
let hello = SignalMessage::FederationHello {
tls_fingerprint: fm.local_tls_fp.clone(),
};
transport.send_signal(&hello).await
.map_err(|e| anyhow::anyhow!("federation hello send failed: {e}"))?;
info!(peer_url = %peer.url, label = ?peer.label, "federation: connected (hello sent)");
Ok(transport)
}
// ── Federation link (runs on a single QUIC connection) ──
/// Run the federation link: exchange global room state and forward media.
async fn run_federation_link(
fm: Arc<FederationManager>,
transport: Arc<QuinnTransport>,
peer_fp: String,
peer_label: String,
) -> Result<(), anyhow::Error> {
// Register peer link + metrics
fm.metrics.federation_peer_status.with_label_values(&[&peer_label]).set(1);
{
let mut links = fm.peer_links.lock().await;
links.insert(peer_fp.clone(), PeerLink {
transport: transport.clone(),
label: peer_label.clone(),
active_rooms: HashSet::new(),
remote_participants: HashMap::new(),
last_seen: Instant::now(),
});
}
// Announce our currently active global rooms to this new peer
// Collect all announcements first, then send (avoid holding locks across await)
let announcements = {
let mgr = fm.room_mgr.lock().await;
let active = mgr.active_rooms();
let mut msgs = Vec::new();
// Local rooms
for room_name in &active {
if fm.is_global_room(room_name) {
let participants = mgr.local_participant_list(room_name);
info!(peer = %peer_label, room = %room_name, participants = participants.len(), "announcing local global room to new peer");
msgs.push(SignalMessage::GlobalRoomActive { room: room_name.clone(), participants });
}
}
// Remote rooms from OTHER peers (for multi-hop propagation)
let links = fm.peer_links.lock().await;
for (fp, link) in links.iter() {
if fp != &peer_fp {
for (room, participants) in &link.remote_participants {
if fm.is_global_room(room) {
info!(peer = %peer_label, room = %room, via = %link.label, "propagating remote room to new peer");
msgs.push(SignalMessage::GlobalRoomActive {
room: room.clone(),
participants: participants.clone(),
});
}
}
}
}
msgs
};
for msg in &announcements {
let _ = transport.send_signal(msg).await;
}
// Three concurrent tasks: signal recv + media recv + RTT monitor
let signal_transport = transport.clone();
let media_transport = transport.clone();
let rtt_transport = transport.clone();
let fm_signal = fm.clone();
let fm_media = fm.clone();
let fm_rtt = fm.clone();
let peer_fp_signal = peer_fp.clone();
let peer_fp_media = peer_fp.clone();
let label_signal = peer_label.clone();
let label_rtt = peer_label.clone();
let signal_task = async move {
loop {
match signal_transport.recv_signal().await {
Ok(Some(msg)) => {
handle_signal(&fm_signal, &peer_fp_signal, &label_signal, msg).await;
}
Ok(None) => break,
Err(e) => {
error!(peer = %label_signal, "federation signal error: {e}");
break;
}
}
}
};
let peer_label_media = peer_label.clone();
let media_task = async move {
let mut media_count: u64 = 0;
loop {
match media_transport.connection().read_datagram().await {
Ok(data) => {
media_count += 1;
if media_count == 1 || media_count % 250 == 0 {
info!(peer = %peer_label_media, media_count, len = data.len(), "federation: received datagram");
}
handle_datagram(&fm_media, &peer_fp_media, data).await;
}
Err(e) => {
info!(peer = %peer_label_media, "federation media task ended: {e}");
break;
}
}
}
};
// RTT monitor: periodically sample QUIC RTT for this peer
let rtt_task = async move {
loop {
tokio::time::sleep(Duration::from_secs(5)).await;
let rtt_ms = rtt_transport.connection().stats().path.rtt.as_millis() as f64;
}
};
tokio::select! {
_ = signal_task => {}
_ = media_task => {}
_ = rtt_task => {}
}
// Cleanup: remove peer link + metrics
fm.metrics.federation_peer_status.with_label_values(&[&peer_label]).set(0);
{
let mut links = fm.peer_links.lock().await;
links.remove(&peer_fp);
}
info!(peer = %peer_label, "federation link ended");
Ok(())
}
/// Handle an incoming federation signal.
async fn handle_signal(
fm: &Arc<FederationManager>,
peer_fp: &str,
peer_label: &str,
msg: SignalMessage,
) {
// Update last_seen for this peer
{
let mut links = fm.peer_links.lock().await;
if let Some(link) = links.get_mut(peer_fp) {
link.last_seen = Instant::now();
}
}
match msg {
SignalMessage::GlobalRoomActive { room, participants } => {
if fm.is_global_room(&room) {
info!(peer = %peer_label, room = %room, remote_participants = participants.len(), "peer has global room active");
let mut links = fm.peer_links.lock().await;
if let Some(link) = links.get_mut(peer_fp) {
link.active_rooms.insert(room.clone());
}
// Update active rooms metric
let total: usize = links.values().map(|l| l.active_rooms.len()).sum();
fm.metrics.federation_active_rooms.set(total as i64);
if let Some(link) = links.get_mut(peer_fp) {
// Tag remote participants with their relay label
let tagged: Vec<_> = participants.iter().map(|p| {
let mut tagged = p.clone();
if tagged.relay_label.is_none() {
tagged.relay_label = Some(link.label.clone());
}
tagged
}).collect();
link.remote_participants.insert(room.clone(), tagged);
}
// Propagate to other peers (with relay labels preserved)
let tagged_for_propagation = if let Some(link) = links.get(peer_fp) {
let label = link.label.clone();
participants.iter().map(|p| {
let mut t = p.clone();
if t.relay_label.is_none() {
t.relay_label = Some(label.clone());
}
t
}).collect::<Vec<_>>()
} else {
participants.clone()
};
for (fp, link) in links.iter() {
if fp != peer_fp {
let _ = link.transport.send_signal(&SignalMessage::GlobalRoomActive {
room: room.clone(),
participants: tagged_for_propagation.clone(),
}).await;
}
}
drop(links);
// Broadcast updated RoomUpdate to local clients in this room
// Find the local room name (may be hashed or raw)
let mgr = fm.room_mgr.lock().await;
for local_room in mgr.active_rooms() {
if fm.is_global_room(&local_room) && fm.resolve_global_room(&local_room) == fm.resolve_global_room(&room) {
// Build merged participant list: local + all remote (deduped)
let mut all_participants = mgr.local_participant_list(&local_room);
let links = fm.peer_links.lock().await;
for link in links.values() {
if let Some(canonical) = fm.resolve_global_room(&local_room) {
if let Some(remote) = link.remote_participants.get(canonical) {
all_participants.extend(remote.iter().cloned());
}
// Also check raw room name, but only if different from canonical
if canonical != local_room {
if let Some(remote) = link.remote_participants.get(&local_room) {
all_participants.extend(remote.iter().cloned());
}
}
}
}
// Deduplicate by fingerprint
let mut seen = HashSet::new();
all_participants.retain(|p| seen.insert(p.fingerprint.clone()));
let update = SignalMessage::RoomUpdate {
count: all_participants.len() as u32,
participants: all_participants,
};
let senders = mgr.local_senders(&local_room);
drop(links);
drop(mgr);
room::broadcast_signal(&senders, &update).await;
break;
}
}
}
}
SignalMessage::GlobalRoomInactive { room } => {
info!(peer = %peer_label, room = %room, "peer global room now inactive");
let mut links = fm.peer_links.lock().await;
if let Some(link) = links.get_mut(peer_fp) {
link.active_rooms.remove(&room);
// Clear remote participants for this peer+room
link.remote_participants.remove(&room);
// Also try canonical name
if let Some(canonical) = fm.resolve_global_room(&room) {
link.remote_participants.remove(canonical);
}
}
// Update active rooms metric
let total: usize = links.values().map(|l| l.active_rooms.len()).sum();
fm.metrics.federation_active_rooms.set(total as i64);
// Build remaining remote participants (from all peers except the one going inactive)
let remaining_remote: Vec<wzp_proto::packet::RoomParticipant> = {
let canonical = fm.resolve_global_room(&room);
let mut result = Vec::new();
for (fp, link) in links.iter() {
if fp == peer_fp { continue; }
if let Some(c) = canonical {
if let Some(remote) = link.remote_participants.get(c) {
result.extend(remote.iter().cloned());
}
}
}
let mut seen = HashSet::new();
result.retain(|p| seen.insert(p.fingerprint.clone()));
result
};
// Propagate to other peers: send updated GlobalRoomActive with revised list,
// or GlobalRoomInactive if no participants remain anywhere
let local_active = {
let mgr = fm.room_mgr.lock().await;
mgr.active_rooms().iter().any(|r| fm.resolve_global_room(r) == fm.resolve_global_room(&room))
};
let has_remaining = !remaining_remote.is_empty() || local_active;
// Collect peer transports to send to (avoid holding lock across await)
let peer_sends: Vec<_> = links.iter()
.filter(|(fp, _)| *fp != peer_fp)
.map(|(_, link)| link.transport.clone())
.collect();
drop(links);
if has_remaining {
// Send updated participant list to other peers
let mut updated_participants = remaining_remote.clone();
if local_active {
let mgr = fm.room_mgr.lock().await;
for local_room in mgr.active_rooms() {
if fm.resolve_global_room(&local_room) == fm.resolve_global_room(&room) {
updated_participants.extend(mgr.local_participant_list(&local_room));
break;
}
}
}
let msg = SignalMessage::GlobalRoomActive {
room: room.clone(),
participants: updated_participants,
};
for transport in &peer_sends {
let _ = transport.send_signal(&msg).await;
}
} else {
// No participants left anywhere — propagate inactive
let msg = SignalMessage::GlobalRoomInactive { room: room.clone() };
for transport in &peer_sends {
let _ = transport.send_signal(&msg).await;
}
}
// Broadcast updated RoomUpdate to local clients (remote participant removed)
let mgr = fm.room_mgr.lock().await;
for local_room in mgr.active_rooms() {
if fm.is_global_room(&local_room) && fm.resolve_global_room(&local_room) == fm.resolve_global_room(&room) {
let mut all_participants = mgr.local_participant_list(&local_room);
all_participants.extend(remaining_remote.iter().cloned());
// Deduplicate by fingerprint
let mut seen = HashSet::new();
all_participants.retain(|p| seen.insert(p.fingerprint.clone()));
let update = SignalMessage::RoomUpdate {
count: all_participants.len() as u32,
participants: all_participants,
};
let senders = mgr.local_senders(&local_room);
drop(mgr);
room::broadcast_signal(&senders, &update).await;
info!(room = %room, "broadcast updated presence (remote participant removed)");
break;
}
}
}
_ => {} // ignore other signals
}
}
/// Handle an incoming federation datagram (room-hash-tagged media).
async fn handle_datagram(
fm: &Arc<FederationManager>,
source_peer_fp: &str,
data: Bytes,
) {
if data.len() < 12 { return; } // 8-byte hash + min packet
let mut rh = [0u8; 8];
rh.copy_from_slice(&data[..8]);
let media_bytes = data.slice(8..);
let pkt = match wzp_proto::MediaPacket::from_bytes(media_bytes.clone()) {
Some(pkt) => pkt,
None => {
fm.event_log.emit(Event::new("federation_ingress_malformed").len(data.len()));
return;
}
};
// Event log: federation ingress
let peer_label = {
let links = fm.peer_links.lock().await;
links.get(source_peer_fp).map(|l| l.label.clone()).unwrap_or_default()
};
fm.event_log.emit(Event::new("federation_ingress").packet(&pkt).peer(&peer_label));
// Count inbound federation packet + update last_seen
fm.metrics.federation_packets_forwarded
.with_label_values(&[source_peer_fp, "in"]).inc();
{
let mut links = fm.peer_links.lock().await;
if let Some(link) = links.get_mut(source_peer_fp) {
link.last_seen = Instant::now();
}
}
// Dedup: drop packets we've already seen (multi-path duplicates).
// Key uses a hash of the actual payload bytes — unique per Opus frame,
// so different senders with the same seq/timestamp never collide.
let payload_hash = {
let mut h = 0u64;
for (i, &b) in media_bytes.iter().take(16).enumerate() {
h ^= (b as u64) << ((i % 8) * 8);
}
h
};
{
let mut dedup = fm.dedup.lock().await;
if dedup.is_dup(&rh, pkt.header.seq, payload_hash) {
fm.event_log.emit(Event::new("dedup_drop").seq(pkt.header.seq).peer(&peer_label));
return;
}
}
// Find room by hash — check local rooms AND global room config
let room_name = {
let mgr = fm.room_mgr.lock().await;
let active = mgr.active_rooms();
// First: check local rooms (has participants)
active.iter().find(|r| room_hash(r) == rh).cloned()
.or_else(|| active.iter().find(|r| fm.global_room_hash(r) == rh).cloned())
// Second: check global room config (hub relay may have no local participants)
.or_else(|| {
fm.global_rooms.iter().find(|name| room_hash(name) == rh).cloned()
})
};
let room_name = match room_name {
Some(r) => r,
None => {
fm.event_log.emit(Event::new("room_not_found").seq(pkt.header.seq).peer(&peer_label));
return;
}
};
// Rate limit per room
if FEDERATION_RATE_LIMIT_PPS > 0 {
let mut limiters = fm.rate_limiters.lock().await;
let limiter = limiters.entry(room_name.clone())
.or_insert_with(|| RateLimiter::new(FEDERATION_RATE_LIMIT_PPS));
if !limiter.allow() {
fm.event_log.emit(Event::new("rate_limit_drop").room(&room_name).seq(pkt.header.seq));
return;
}
}
// Deliver to all local participants — forward the raw bytes as-is.
// The original sender's MediaPacket is preserved exactly (no re-serialization).
let locals = {
let mgr = fm.room_mgr.lock().await;
mgr.local_senders(&room_name)
};
for sender in &locals {
match sender {
room::ParticipantSender::Quic(t) => {
if let Err(e) = t.send_raw_datagram(&media_bytes) {
fm.event_log.emit(Event::new("local_deliver_error").room(&room_name).seq(pkt.header.seq).reason(&e.to_string()));
warn!("federation local delivery error: {e}");
}
}
room::ParticipantSender::WebSocket(_) => { let _ = sender.send_raw(&pkt.payload).await; }
}
}
fm.event_log.emit(Event::new("local_deliver").room(&room_name).seq(pkt.header.seq).to_count(locals.len()));
// Multi-hop: forward to ALL other connected peers (not the source)
// Don't filter by active_rooms — the receiving peer decides whether to deliver
let links = fm.peer_links.lock().await;
for (fp, link) in links.iter() {
if fp != source_peer_fp {
let mut tagged = Vec::with_capacity(8 + media_bytes.len());
tagged.extend_from_slice(&rh);
tagged.extend_from_slice(&media_bytes);
let _ = link.transport.send_raw_datagram(&tagged);
}
}
}

41
crates/wzp-relay/src/handshake.rs
View File

@@ -15,25 +15,27 @@ use wzp_proto::{MediaTransport, QualityProfile, SignalMessage};
/// 5. Derive shared ChaCha20-Poly1305 session
/// 6. Send `CallAnswer` back
///
/// Returns the derived `CryptoSession` and the chosen `QualityProfile`.
/// Returns the derived `CryptoSession`, the chosen `QualityProfile`, the caller's fingerprint,
/// and the caller's alias (if provided in CallOffer).
pub async fn accept_handshake(
transport: &dyn MediaTransport,
seed: &[u8; 32],
) -> Result<(Box<dyn CryptoSession>, QualityProfile), anyhow::Error> {
) -> Result<(Box<dyn CryptoSession>, QualityProfile, String, Option<String>), anyhow::Error> {
// 1. Receive CallOffer
let offer = transport
.recv_signal()
.await?
.ok_or_else(|| anyhow::anyhow!("connection closed before receiving CallOffer"))?;
let (caller_identity_pub, caller_ephemeral_pub, caller_signature, supported_profiles) =
let (caller_identity_pub, caller_ephemeral_pub, caller_signature, supported_profiles, caller_alias) =
match offer {
SignalMessage::CallOffer {
identity_pub,
ephemeral_pub,
signature,
supported_profiles,
} => (identity_pub, ephemeral_pub, signature, supported_profiles),
alias,
} => (identity_pub, ephemeral_pub, signature, supported_profiles, alias),
other => {
return Err(anyhow::anyhow!(
"expected CallOffer, got {:?}",
@@ -76,25 +78,26 @@ pub async fn accept_handshake(
};
transport.send_signal(&answer).await?;
Ok((session, chosen_profile))
// Derive caller fingerprint: SHA-256(Ed25519 pub)[:16], formatted as xxxx:xxxx:...
// Must match the format used in signal registration and presence.
let caller_fp = {
use sha2::{Sha256, Digest};
let hash = Sha256::digest(&caller_identity_pub);
let fp = wzp_crypto::Fingerprint([
hash[0], hash[1], hash[2], hash[3], hash[4], hash[5], hash[6], hash[7],
hash[8], hash[9], hash[10], hash[11], hash[12], hash[13], hash[14], hash[15],
]);
fp.to_string()
};
Ok((session, chosen_profile, caller_fp, caller_alias))
}
/// Select the best quality profile from those the caller supports.
fn choose_profile(supported: &[QualityProfile]) -> QualityProfile {
// Prefer higher-quality profiles. Use GOOD as default if supported list is empty.
if supported.is_empty() {
return QualityProfile::GOOD;
}
// Pick the profile with the highest bitrate.
supported
.iter()
.max_by(|a, b| {
a.total_bitrate_kbps()
.partial_cmp(&b.total_bitrate_kbps())
.unwrap_or(std::cmp::Ordering::Equal)
})
.copied()
.unwrap_or(QualityProfile::GOOD)
// Cap at GOOD (24k) for now — studio tiers (32k/48k/64k) not yet tested
// for federation reliability (large packets may exceed path MTU).
QualityProfile::GOOD
}
#[cfg(test)]

8
crates/wzp-relay/src/lib.rs
View File

@@ -8,14 +8,22 @@
//! quality transitions.
pub mod auth;
pub mod call_registry;
pub mod config;
pub mod event_log;
pub mod federation;
pub mod signal_hub;
pub mod handshake;
pub mod metrics;
pub mod pipeline;
pub mod presence;
pub mod probe;
pub mod relay_link;
pub mod room;
pub mod route;
pub mod session_mgr;
pub mod trunk;
pub mod ws;
pub use config::RelayConfig;
pub use handshake::accept_handshake;

744
crates/wzp-relay/src/main.rs
View File

@@ -13,21 +13,64 @@ use std::sync::Arc;
use std::time::Duration;
use tokio::sync::Mutex;
use tracing::{error, info};
use tracing::{error, info, warn};
use wzp_proto::MediaTransport;
use wzp_proto::{MediaTransport, SignalMessage};
use wzp_relay::config::RelayConfig;
use wzp_relay::metrics::RelayMetrics;
use wzp_relay::pipeline::{PipelineConfig, RelayPipeline};
use wzp_relay::presence::PresenceRegistry;
use wzp_relay::room::{self, RoomManager};
use wzp_relay::session_mgr::SessionManager;
fn parse_args() -> RelayConfig {
let mut config = RelayConfig::default();
/// Parsed CLI result — config + identity path.
struct CliResult {
config: RelayConfig,
identity_path: Option<String>,
config_file: Option<String>,
config_needs_create: bool,
}
fn parse_args() -> CliResult {
let args: Vec<String> = std::env::args().collect();
// First pass: extract --config and --identity
let mut config_file = None;
let mut identity_path = None;
let mut i = 1;
while i < args.len() {
match args[i].as_str() {
"--config" | "-c" => { i += 1; config_file = args.get(i).cloned(); }
"--identity" | "-i" => { i += 1; identity_path = args.get(i).cloned(); }
_ => {}
}
i += 1;
}
// Track if we need to create the config after identity is known
let config_needs_create = config_file.as_ref().map(|p| !std::path::Path::new(p).exists()).unwrap_or(false);
let mut config = if let Some(ref path) = config_file {
if config_needs_create {
// Will be re-created with personalized info after identity is loaded
RelayConfig::default()
} else {
wzp_relay::config::load_config(path)
.unwrap_or_else(|e| {
eprintln!("failed to load config from {path}: {e}");
std::process::exit(1);
})
}
} else {
RelayConfig::default()
};
// CLI flags override config file values
let mut i = 1;
while i < args.len() {
match args[i].as_str() {
"--config" | "-c" => { i += 1; } // already handled
"--identity" | "-i" => { i += 1; } // already handled
"--listen" => {
i += 1;
config.listen_addr = args.get(i).expect("--listen requires an address")
@@ -67,6 +110,41 @@ fn parse_args() -> RelayConfig {
"--trunking" => {
config.trunking_enabled = true;
}
"--ws-port" => {
i += 1;
config.ws_port = Some(
args.get(i).expect("--ws-port requires a port number")
.parse().expect("invalid --ws-port number"),
);
}
"--static-dir" => {
i += 1;
config.static_dir = Some(
args.get(i).expect("--static-dir requires a directory path").to_string(),
);
}
"--global-room" => {
i += 1;
config.global_rooms.push(wzp_relay::config::GlobalRoomConfig {
name: args.get(i).expect("--global-room requires a room name").to_string(),
});
}
"--debug-tap" => {
i += 1;
config.debug_tap = Some(
args.get(i).expect("--debug-tap requires a room name (or '*' for all)").to_string(),
);
}
"--event-log" => {
i += 1;
config.event_log = Some(
args.get(i).expect("--event-log requires a file path").to_string(),
);
}
"--version" | "-V" => {
println!("wzp-relay {}", env!("WZP_BUILD_HASH"));
std::process::exit(0);
}
"--mesh-status" => {
// Print mesh table from a fresh registry and exit.
// In practice this is useful after the relay has been running;
@@ -76,9 +154,11 @@ fn parse_args() -> RelayConfig {
std::process::exit(0);
}
"--help" | "-h" => {
eprintln!("Usage: wzp-relay [--listen <addr>] [--remote <addr>] [--auth-url <url>] [--metrics-port <port>] [--probe <addr>]... [--probe-mesh] [--mesh-status]");
eprintln!("Usage: wzp-relay [--config <path>] [--listen <addr>] [--remote <addr>] [--auth-url <url>] [--metrics-port <port>] [--probe <addr>]... [--probe-mesh] [--mesh-status]");
eprintln!();
eprintln!("Options:");
eprintln!(" -c, --config <path> Load config from TOML file (creates example if missing)");
eprintln!(" -i, --identity <path> Identity file path (creates if missing, uses OsRng)");
eprintln!(" --listen <addr> Listen address (default: 0.0.0.0:4433)");
eprintln!(" --remote <addr> Remote relay for forwarding (disables room mode)");
eprintln!(" --auth-url <url> featherChat auth endpoint (e.g., https://chat.example.com/v1/auth/validate)");
@@ -88,6 +168,10 @@ fn parse_args() -> RelayConfig {
eprintln!(" --probe-mesh Enable mesh mode (mark config flag, probes all --probe targets).");
eprintln!(" --mesh-status Print mesh health table and exit (diagnostic).");
eprintln!(" --trunking Enable trunk batching for outgoing media in room mode.");
eprintln!(" --global-room <name> Declare a room as global (bridged across federation). Repeatable.");
eprintln!(" --debug-tap <room> Log packet headers for a room ('*' for all rooms).");
eprintln!(" --ws-port <port> WebSocket listener port for browser clients (e.g., 8080).");
eprintln!(" --static-dir <dir> Directory to serve static files from (HTML/JS/WASM).");
eprintln!();
eprintln!("Room mode (default):");
eprintln!(" Clients join rooms by name. Packets forwarded to all others (SFU).");
@@ -100,7 +184,7 @@ fn parse_args() -> RelayConfig {
}
i += 1;
}
config
CliResult { config, identity_path, config_file, config_needs_create }
}
struct RelayStats {
@@ -168,27 +252,130 @@ async fn run_downstream(
}
}
/// Detect a non-loopback IP address from local interfaces.
/// Prefers public IPs over private (10.x, 172.16-31.x, 192.168.x).
fn detect_public_ip() -> Option<String> {
use std::net::UdpSocket;
// Connect to a public address to find our outbound IP (doesn't actually send anything)
if let Ok(socket) = UdpSocket::bind("0.0.0.0:0") {
if socket.connect("8.8.8.8:80").is_ok() {
if let Ok(addr) = socket.local_addr() {
return Some(addr.ip().to_string());
}
}
}
None
}
/// Build-time git hash, set by build.rs or env.
const BUILD_GIT_HASH: &str = env!("WZP_BUILD_HASH");
#[tokio::main]
async fn main() -> anyhow::Result<()> {
let config = parse_args();
let CliResult { mut config, identity_path, config_file, config_needs_create } = parse_args();
tracing_subscriber::fmt().init();
info!(version = BUILD_GIT_HASH, "wzp-relay build");
rustls::crypto::ring::default_provider()
.install_default()
.expect("failed to install rustls crypto provider");
// Presence registry
let presence = Arc::new(Mutex::new(PresenceRegistry::new()));
// Route resolver
let route_resolver = Arc::new(wzp_relay::route::RouteResolver::new(config.listen_addr));
// Prometheus metrics
let metrics = Arc::new(RelayMetrics::new());
if let Some(port) = config.metrics_port {
let m = metrics.clone();
tokio::spawn(wzp_relay::metrics::serve_metrics(port, m));
let p = Some(presence.clone());
let rr = Some(route_resolver.clone());
tokio::spawn(wzp_relay::metrics::serve_metrics(port, m, p, rr));
}
// Generate ephemeral relay identity for crypto handshake
let relay_seed = wzp_crypto::Seed::generate();
// Load or generate relay identity
let relay_seed = {
let id_path = match identity_path {
Some(ref p) => std::path::PathBuf::from(p),
None => dirs::home_dir()
.unwrap_or_else(|| std::path::PathBuf::from("."))
.join(".wzp")
.join("relay-identity"),
};
if id_path.exists() {
if let Ok(hex) = std::fs::read_to_string(&id_path) {
if let Ok(s) = wzp_crypto::Seed::from_hex(hex.trim()) {
info!("loaded relay identity from {}", id_path.display());
s
} else {
warn!("corrupt identity file {}, generating new", id_path.display());
let s = wzp_crypto::Seed::generate();
let hex: String = s.0.iter().map(|b| format!("{b:02x}")).collect();
let _ = std::fs::write(&id_path, &hex);
s
}
} else {
let s = wzp_crypto::Seed::generate();
let hex: String = s.0.iter().map(|b| format!("{b:02x}")).collect();
let _ = std::fs::write(&id_path, &hex);
s
}
} else {
let s = wzp_crypto::Seed::generate();
if let Some(parent) = id_path.parent() {
let _ = std::fs::create_dir_all(parent);
}
let hex: String = s.0.iter().map(|b| format!("{b:02x}")).collect();
let _ = std::fs::write(&id_path, &hex);
info!("generated relay identity at {}", id_path.display());
s
}
};
let relay_fp = relay_seed.derive_identity().public_identity().fingerprint;
info!(addr = %config.listen_addr, fingerprint = %relay_fp, "WarzonePhone relay starting");
let (server_config, _cert) = wzp_transport::server_config();
let (server_config, cert_der) = wzp_transport::server_config_from_seed(&relay_seed.0);
let tls_fp = wzp_transport::tls_fingerprint(&cert_der);
info!(tls_fingerprint = %tls_fp, "TLS certificate (deterministic from relay identity)");
// Create personalized config file if it was missing
let public_ip = detect_public_ip();
if config_needs_create {
if let Some(ref path) = config_file {
let info = wzp_relay::config::RelayInfo {
listen_addr: config.listen_addr.to_string(),
tls_fingerprint: tls_fp.clone(),
public_ip: public_ip.clone(),
};
if let Err(e) = wzp_relay::config::load_or_create_config(path, Some(&info)) {
warn!("failed to create config: {e}");
}
}
}
// Print federation hint with our public IP + listen port + TLS fingerprint
let listen_port = config.listen_addr.port();
if let Some(ip) = &public_ip {
info!("federation: to peer with this relay, add to relay.toml:");
info!(" [[peers]]");
info!(" url = \"{ip}:{listen_port}\"");
info!(" fingerprint = \"{tls_fp}\"");
}
// Log configured peers and trusted relays
if !config.peers.is_empty() {
info!(count = config.peers.len(), "federation peers configured");
for p in &config.peers {
info!(url = %p.url, label = ?p.label, " peer");
}
}
if !config.trusted.is_empty() {
info!(count = config.trusted.len(), "trusted relays configured");
for t in &config.trusted {
info!(fingerprint = %t.fingerprint, label = ?t.label, " trusted");
}
}
let endpoint = wzp_transport::create_endpoint(config.listen_addr, Some(server_config))?;
// Forward mode
@@ -206,14 +393,47 @@ async fn main() -> anyhow::Result<()> {
// Room manager (room mode only)
let room_mgr = Arc::new(Mutex::new(RoomManager::new()));
// Event log for protocol analysis
let event_log = wzp_relay::event_log::start_event_log(
config.event_log.as_ref().map(std::path::PathBuf::from)
);
// Federation manager
let global_room_set: std::collections::HashSet<String> = config.global_rooms.iter()
.map(|g| g.name.clone())
.collect();
let federation_mgr = if !config.peers.is_empty() || !config.trusted.is_empty() || !global_room_set.is_empty() {
let fm = Arc::new(wzp_relay::federation::FederationManager::new(
config.peers.clone(),
config.trusted.clone(),
global_room_set.clone(),
room_mgr.clone(),
endpoint.clone(),
tls_fp.clone(),
metrics.clone(),
event_log.clone(),
));
let fm_run = fm.clone();
tokio::spawn(async move { fm_run.run().await });
Some(fm)
} else {
None
};
// Session manager — enforces max concurrent sessions
let session_mgr = Arc::new(Mutex::new(SessionManager::new(config.max_sessions)));
// Signal hub + call registry for direct 1:1 calls
let signal_hub = Arc::new(Mutex::new(wzp_relay::signal_hub::SignalHub::new()));
let call_registry = Arc::new(Mutex::new(wzp_relay::call_registry::CallRegistry::new()));
// Spawn inter-relay health probes via ProbeMesh coordinator
if !config.probe_targets.is_empty() {
let mesh = wzp_relay::probe::ProbeMesh::new(
config.probe_targets.clone(),
metrics.registry(),
Some(presence.clone()),
);
info!(
targets = mesh.target_count(),
@@ -223,11 +443,34 @@ async fn main() -> anyhow::Result<()> {
tokio::spawn(async move { mesh.run_all().await });
}
// WebSocket server for browser clients
if let Some(ws_port) = config.ws_port {
let ws_state = wzp_relay::ws::WsState {
room_mgr: room_mgr.clone(),
session_mgr: session_mgr.clone(),
auth_url: config.auth_url.clone(),
metrics: metrics.clone(),
presence: presence.clone(),
};
let static_dir = config.static_dir.clone();
tokio::spawn(wzp_relay::ws::run_ws_server(ws_port, ws_state, static_dir));
info!(ws_port, "WebSocket listener enabled for browser clients");
}
if let Some(ref url) = config.auth_url {
info!(url, "auth enabled — clients must present featherChat token");
} else {
info!("auth disabled — any client can connect (use --auth-url to enable)");
}
if !config.global_rooms.is_empty() {
info!(count = config.global_rooms.len(), "global rooms configured");
for g in &config.global_rooms {
info!(name = %g.name, " global room");
}
}
if let Some(ref tap) = config.debug_tap {
info!(filter = %tap, "debug tap enabled — logging packet headers");
}
info!("Listening for connections...");
@@ -244,6 +487,13 @@ async fn main() -> anyhow::Result<()> {
let relay_seed_bytes = relay_seed.0;
let metrics = metrics.clone();
let trunking_enabled = config.trunking_enabled;
let debug_tap = config.debug_tap.as_ref().map(|filter| room::DebugTap { room_filter: filter.clone() });
let presence = presence.clone();
let route_resolver = route_resolver.clone();
let federation_mgr = federation_mgr.clone();
let signal_hub = signal_hub.clone();
let call_registry = call_registry.clone();
let listen_addr_str = config.listen_addr.to_string();
tokio::spawn(async move {
let addr = connection.remote_address();
@@ -258,10 +508,27 @@ async fn main() -> anyhow::Result<()> {
let transport = Arc::new(wzp_transport::QuinnTransport::new(connection));
// Ping connections: client just measures QUIC connect RTT.
if room_name == "ping" {
info!(%addr, "ping connection (RTT probe)");
return;
}
// Version query: respond with build hash over a uni stream.
if room_name == "version" {
if let Ok(mut send) = transport.connection().open_uni().await {
let _ = send.write_all(BUILD_GIT_HASH.as_bytes()).await;
let _ = send.finish();
// Wait for client to read before closing
tokio::time::sleep(std::time::Duration::from_millis(100)).await;
}
return;
}
// Probe connections use SNI "_probe" to identify themselves.
// They skip auth + handshake and just do Ping->Pong.
// They skip auth + handshake and just do Ping->Pong + presence gossip.
if room_name == "_probe" {
info!(%addr, "probe connection detected, entering Ping/Pong responder");
info!(%addr, "probe connection detected, entering Ping/Pong + presence responder");
loop {
match transport.recv_signal().await {
Ok(Some(wzp_proto::SignalMessage::Ping { timestamp_ms })) => {
@@ -272,8 +539,63 @@ async fn main() -> anyhow::Result<()> {
break;
}
}
Ok(Some(wzp_proto::SignalMessage::PresenceUpdate { fingerprints, relay_addr })) => {
// A peer relay is telling us which fingerprints it has
let peer_addr: std::net::SocketAddr = relay_addr.parse().unwrap_or(addr);
let fps: std::collections::HashSet<String> = fingerprints.into_iter().collect();
{
let mut reg = presence.lock().await;
reg.update_peer(peer_addr, fps);
}
// Reply with our own local fingerprints
let local_fps: Vec<String> = {
let reg = presence.lock().await;
reg.local_fingerprints().into_iter().collect()
};
let reply = wzp_proto::SignalMessage::PresenceUpdate {
fingerprints: local_fps,
relay_addr: addr.to_string(),
};
if let Err(e) = transport.send_signal(&reply).await {
error!(%addr, "presence reply send error: {e}");
break;
}
}
Ok(Some(wzp_proto::SignalMessage::RouteQuery { fingerprint, ttl })) => {
// Look up the fingerprint in our local registry
let reg = presence.lock().await;
let route = route_resolver.resolve(&reg, &fingerprint);
drop(reg);
let (found, relay_chain) = match route {
wzp_relay::route::Route::Local => {
(true, vec![route_resolver.local_addr().to_string()])
}
wzp_relay::route::Route::DirectPeer(peer_addr) => {
(true, vec![route_resolver.local_addr().to_string(), peer_addr.to_string()])
}
_ => {
// Not found locally; if ttl > 0 we could forward
// to other peers (future multi-hop). For now, reply not found.
if ttl > 0 {
// TODO: forward RouteQuery to other peers with ttl-1
}
(false, vec![])
}
};
let reply = wzp_proto::SignalMessage::RouteResponse {
fingerprint,
found,
relay_chain,
};
if let Err(e) = transport.send_signal(&reply).await {
error!(%addr, "route response send error: {e}");
break;
}
}
Ok(Some(_)) => {
// Ignore non-Ping signals on probe connections
// Ignore other signals on probe connections
}
Ok(None) => {
info!(%addr, "probe connection closed");
@@ -289,6 +611,294 @@ async fn main() -> anyhow::Result<()> {
return;
}
// Federation connections use SNI "_federation"
if room_name == "_federation" {
if let Some(ref fm) = federation_mgr {
// Wait for FederationHello to identify the connecting relay
let hello_fp = match tokio::time::timeout(
std::time::Duration::from_secs(5),
transport.recv_signal(),
).await {
Ok(Ok(Some(wzp_proto::SignalMessage::FederationHello { tls_fingerprint }))) => tls_fingerprint,
_ => {
warn!(%addr, "federation: no hello received, closing");
return;
}
};
if let Some(label) = fm.check_inbound_trust(addr, &hello_fp) {
let peer_config = wzp_relay::config::PeerConfig {
url: addr.to_string(),
fingerprint: hello_fp,
label: Some(label.clone()),
};
let fm = fm.clone();
info!(%addr, label = %label, "inbound federation accepted (trusted)");
fm.handle_inbound(transport, peer_config).await;
} else {
warn!(%addr, fp = %hello_fp, "unknown relay wants to federate");
info!(" to accept, add to relay.toml:");
info!(" [[trusted]]");
info!(" fingerprint = \"{hello_fp}\"");
info!(" label = \"Relay at {addr}\"");
}
} else {
info!(%addr, "federation connection rejected (no federation configured)");
}
return;
}
// Direct calling: persistent signaling connection
if room_name == "_signal" {
info!(%addr, "signal connection");
// Optional auth
let auth_fp: Option<String> = if let Some(ref url) = auth_url {
match transport.recv_signal().await {
Ok(Some(SignalMessage::AuthToken { token })) => {
match wzp_relay::auth::validate_token(url, &token).await {
Ok(client) => Some(client.fingerprint),
Err(e) => {
error!(%addr, "signal auth failed: {e}");
return;
}
}
}
_ => { warn!(%addr, "signal: expected AuthToken"); return; }
}
} else {
None
};
// Wait for RegisterPresence
let (client_fp, client_alias) = match tokio::time::timeout(
std::time::Duration::from_secs(10),
transport.recv_signal(),
).await {
Ok(Ok(Some(SignalMessage::RegisterPresence { identity_pub, signature: _, alias }))) => {
// Compute fingerprint: SHA-256(Ed25519 pub key)[:16], same as Fingerprint type
let fp = {
use sha2::{Sha256, Digest};
let hash = Sha256::digest(&identity_pub);
let fingerprint = wzp_crypto::Fingerprint([
hash[0], hash[1], hash[2], hash[3], hash[4], hash[5], hash[6], hash[7],
hash[8], hash[9], hash[10], hash[11], hash[12], hash[13], hash[14], hash[15],
]);
fingerprint.to_string()
};
let fp = auth_fp.unwrap_or(fp);
(fp, alias)
}
_ => {
warn!(%addr, "signal: no RegisterPresence received");
return;
}
};
// Register in signal hub + presence
{
let mut hub = signal_hub.lock().await;
hub.register(client_fp.clone(), transport.clone(), client_alias.clone());
}
{
let mut reg = presence.lock().await;
reg.register_local(&client_fp, client_alias.clone(), None);
}
// Send ack
let _ = transport.send_signal(&SignalMessage::RegisterPresenceAck {
success: true,
error: None,
}).await;
info!(%addr, fingerprint = %client_fp, alias = ?client_alias, "signal client registered");
// Signal recv loop
loop {
match transport.recv_signal().await {
Ok(Some(msg)) => {
match msg {
SignalMessage::DirectCallOffer { ref target_fingerprint, ref call_id, ref caller_alias, .. } => {
let target_fp = target_fingerprint.clone();
let call_id = call_id.clone();
// Check if target is online
let online = {
let hub = signal_hub.lock().await;
hub.is_online(&target_fp)
};
if !online {
info!(%addr, target = %target_fp, "call target not online");
let _ = transport.send_signal(&SignalMessage::Hangup {
reason: wzp_proto::HangupReason::Normal,
}).await;
continue;
}
// Create call in registry
{
let mut reg = call_registry.lock().await;
reg.create_call(call_id.clone(), client_fp.clone(), target_fp.clone());
}
// Forward offer to callee
info!(caller = %client_fp, callee = %target_fp, call_id = %call_id, "routing direct call offer");
let hub = signal_hub.lock().await;
if let Err(e) = hub.send_to(&target_fp, &msg).await {
warn!("failed to forward call offer: {e}");
}
// Send ringing to caller
drop(hub);
let _ = transport.send_signal(&SignalMessage::CallRinging {
call_id: call_id.clone(),
}).await;
}
SignalMessage::DirectCallAnswer { ref call_id, ref accept_mode, .. } => {
let call_id = call_id.clone();
let mode = *accept_mode;
let peer_fp = {
let reg = call_registry.lock().await;
reg.peer_fingerprint(&call_id, &client_fp).map(|s| s.to_string())
};
let Some(peer_fp) = peer_fp else {
warn!(call_id = %call_id, "answer for unknown call");
continue;
};
if mode == wzp_proto::CallAcceptMode::Reject {
info!(call_id = %call_id, "call rejected");
let mut reg = call_registry.lock().await;
reg.end_call(&call_id);
drop(reg);
let hub = signal_hub.lock().await;
let _ = hub.send_to(&peer_fp, &SignalMessage::Hangup {
reason: wzp_proto::HangupReason::Normal,
}).await;
} else {
// Accept — create private room
let room = format!("call-{call_id}");
{
let mut reg = call_registry.lock().await;
reg.set_active(&call_id, mode, room.clone());
}
info!(call_id = %call_id, room = %room, mode = ?mode, "call accepted, creating room");
// Forward answer to caller
{
let hub = signal_hub.lock().await;
let _ = hub.send_to(&peer_fp, &msg).await;
}
// Send CallSetup to both parties
// Use the address the client connected to (their remote addr
// is our perspective, but we need our listen addr).
// Replace 0.0.0.0 with the client's destination IP.
let relay_addr_for_setup = if listen_addr_str.starts_with("0.0.0.0:") {
let port = &listen_addr_str[8..];
// Use the local IP from the client's connection
let local_ip = addr.ip();
if local_ip.is_loopback() {
format!("127.0.0.1:{port}")
} else {
format!("{local_ip}:{port}")
}
} else {
listen_addr_str.clone()
};
let setup = SignalMessage::CallSetup {
call_id: call_id.clone(),
room: room.clone(),
relay_addr: relay_addr_for_setup,
};
{
let hub = signal_hub.lock().await;
let _ = hub.send_to(&peer_fp, &setup).await;
let _ = hub.send_to(&client_fp, &setup).await;
}
}
}
SignalMessage::Hangup { .. } => {
// Forward hangup to all active calls for this user
let calls = {
let reg = call_registry.lock().await;
reg.calls_for_fingerprint(&client_fp)
.iter()
.map(|c| (c.call_id.clone(), if c.caller_fingerprint == client_fp {
c.callee_fingerprint.clone()
} else {
c.caller_fingerprint.clone()
}))
.collect::<Vec<_>>()
};
for (call_id, peer_fp) in &calls {
let hub = signal_hub.lock().await;
let _ = hub.send_to(peer_fp, &msg).await;
drop(hub);
let mut reg = call_registry.lock().await;
reg.end_call(call_id);
}
}
SignalMessage::Ping { timestamp_ms } => {
let _ = transport.send_signal(&SignalMessage::Pong { timestamp_ms }).await;
}
other => {
warn!(%addr, "signal: unexpected message: {:?}", std::mem::discriminant(&other));
}
}
}
Ok(None) => {
info!(%addr, "signal connection closed");
break;
}
Err(e) => {
warn!(%addr, "signal recv error: {e}");
break;
}
}
}
// Cleanup: unregister + end active calls
let active_calls = {
let reg = call_registry.lock().await;
reg.calls_for_fingerprint(&client_fp)
.iter()
.map(|c| (c.call_id.clone(), if c.caller_fingerprint == client_fp {
c.callee_fingerprint.clone()
} else {
c.caller_fingerprint.clone()
}))
.collect::<Vec<_>>()
};
for (call_id, peer_fp) in &active_calls {
let hub = signal_hub.lock().await;
let _ = hub.send_to(peer_fp, &SignalMessage::Hangup {
reason: wzp_proto::HangupReason::Normal,
}).await;
drop(hub);
let mut reg = call_registry.lock().await;
reg.end_call(call_id);
}
{
let mut hub = signal_hub.lock().await;
hub.unregister(&client_fp);
}
{
let mut reg = presence.lock().await;
reg.unregister_local(&client_fp);
}
transport.close().await.ok();
return;
}
// Auth check: if --auth-url is set, expect first signal message to be a token
// Auth: if --auth-url is set, expect AuthToken as first signal
let authenticated_fp: Option<String> = if let Some(ref url) = auth_url {
@@ -335,7 +945,7 @@ async fn main() -> anyhow::Result<()> {
// Crypto handshake: verify client identity + negotiate quality profile
let handshake_start = std::time::Instant::now();
let (_crypto_session, _chosen_profile) = match wzp_relay::handshake::accept_handshake(
let (_crypto_session, _chosen_profile, caller_fp, caller_alias) = match wzp_relay::handshake::accept_handshake(
&*transport,
&relay_seed_bytes,
).await {
@@ -352,6 +962,37 @@ async fn main() -> anyhow::Result<()> {
}
};
// Use the caller's identity fingerprint from the handshake
let participant_fp = authenticated_fp.clone().unwrap_or(caller_fp);
// ACL: call rooms (call-*) are restricted to the two authorized participants.
// Only the relay's call orchestrator creates these rooms — random clients can't join.
if room_name.starts_with("call-") {
let call_id = &room_name[5..]; // strip "call-" prefix
let authorized = {
let reg = call_registry.lock().await;
match reg.get(call_id) {
Some(call) => {
call.caller_fingerprint == participant_fp
|| call.callee_fingerprint == participant_fp
}
None => false, // unknown call — reject
}
};
if !authorized {
warn!(%addr, room = %room_name, fp = %participant_fp, "rejected: not authorized for this call room");
transport.close().await.ok();
return;
}
info!(%addr, room = %room_name, fp = %participant_fp, "authorized for call room");
}
// Register in presence registry
{
let mut reg = presence.lock().await;
reg.register_local(&participant_fp, None, Some(room_name.clone()));
}
info!(%addr, room = %room_name, "client joining");
if let Some(remote) = remote_transport {
@@ -398,16 +1039,55 @@ async fn main() -> anyhow::Result<()> {
metrics.active_sessions.inc();
// Call rooms: enforce 2-participant limit
if room_name.starts_with("call-") {
let mgr = room_mgr.lock().await;
if mgr.room_size(&room_name) >= 2 {
drop(mgr);
warn!(%addr, room = %room_name, "call room full (max 2 participants)");
metrics.active_sessions.dec();
let mut smgr = session_mgr.lock().await;
smgr.remove_session(session_id);
transport.close().await.ok();
return;
}
}
let participant_id = {
let mut mgr = room_mgr.lock().await;
match mgr.join(&room_name, addr, transport.clone(), authenticated_fp.as_deref()) {
Ok(id) => {
match mgr.join(
&room_name,
addr,
room::ParticipantSender::Quic(transport.clone()),
Some(&participant_fp),
caller_alias.as_deref(),
) {
Ok((id, update, senders)) => {
metrics.active_rooms.set(mgr.list().len() as i64);
drop(mgr); // release lock before async broadcast
// Merge federated participants into RoomUpdate if this is a global room
let merged_update = if let Some(ref fm) = federation_mgr {
if fm.is_global_room(&room_name) {
if let SignalMessage::RoomUpdate { count: _, participants: mut local_parts } = update {
let remote = fm.get_remote_participants(&room_name).await;
local_parts.extend(remote);
// Deduplicate by fingerprint
let mut seen = std::collections::HashSet::new();
local_parts.retain(|p| seen.insert(p.fingerprint.clone()));
SignalMessage::RoomUpdate {
count: local_parts.len() as u32,
participants: local_parts,
}
} else { update }
} else { update }
} else { update };
room::broadcast_signal(&senders, &merged_update).await;
id
}
Err(e) => {
error!(%addr, room = %room_name, "room join denied: {e}");
// Clean up the session we just created
metrics.active_sessions.dec();
let mut smgr = session_mgr.lock().await;
smgr.remove_session(session_id);
@@ -421,6 +1101,25 @@ async fn main() -> anyhow::Result<()> {
.iter()
.map(|b| format!("{b:02x}"))
.collect();
// Set up federation media channel if this is a global room
let (federation_tx, federation_room_hash) = if let Some(ref fm) = federation_mgr {
let is_global = fm.is_global_room(&room_name);
if is_global {
let canonical_hash = fm.global_room_hash(&room_name);
let (tx, rx) = tokio::sync::mpsc::channel(256);
let fm_clone = fm.clone();
tokio::spawn(async move {
wzp_relay::federation::run_federation_media_egress(fm_clone, rx).await;
});
info!(room = %room_name, canonical = ?fm.resolve_global_room(&room_name), "federation egress created (global room)");
(Some(tx), Some(canonical_hash))
} else {
(None, None)
}
} else {
(None, None)
};
room::run_participant(
room_mgr.clone(),
room_name,
@@ -429,9 +1128,16 @@ async fn main() -> anyhow::Result<()> {
metrics.clone(),
&session_id_str,
trunking_enabled,
debug_tap,
federation_tx,
federation_room_hash,
).await;
// Participant disconnected — clean up per-session metrics
// Participant disconnected — clean up presence + per-session metrics
if let Some(ref fp) = authenticated_fp {
let mut reg = presence.lock().await;
reg.unregister_local(fp);
}
metrics.remove_session_metrics(&session_id_str);
metrics.active_sessions.dec();
{

256
crates/wzp-relay/src/metrics.rs
View File

@@ -16,12 +16,22 @@ pub struct RelayMetrics {
pub bytes_forwarded: IntCounter,
pub auth_attempts: IntCounterVec,
pub handshake_duration: Histogram,
// Federation metrics
pub federation_peer_status: IntGaugeVec,
pub federation_peer_rtt_ms: GaugeVec,
pub federation_packets_forwarded: IntCounterVec,
pub federation_packets_deduped: IntCounter,
pub federation_packets_rate_limited: IntCounter,
pub federation_active_rooms: IntGauge,
// Per-session metrics
pub session_buffer_depth: IntGaugeVec,
pub session_loss_pct: GaugeVec,
pub session_rtt_ms: GaugeVec,
pub session_underruns: IntCounterVec,
pub session_overruns: IntCounterVec,
// Phase 4: loss-recovery breakdown per session.
pub session_dred_reconstructions: IntCounterVec,
pub session_classical_plc: IntCounterVec,
registry: Registry,
}
@@ -60,6 +70,28 @@ impl RelayMetrics {
)
.expect("metric");
let federation_peer_status = IntGaugeVec::new(
Opts::new("wzp_federation_peer_status", "Peer connection status (0=disconnected, 1=connected)"),
&["peer"],
).expect("metric");
let federation_peer_rtt_ms = GaugeVec::new(
Opts::new("wzp_federation_peer_rtt_ms", "QUIC RTT to federated peer in milliseconds"),
&["peer"],
).expect("metric");
let federation_packets_forwarded = IntCounterVec::new(
Opts::new("wzp_federation_packets_forwarded_total", "Packets forwarded to/from federated peers"),
&["peer", "direction"],
).expect("metric");
let federation_packets_deduped = IntCounter::with_opts(
Opts::new("wzp_federation_packets_deduped_total", "Duplicate federation packets dropped"),
).expect("metric");
let federation_packets_rate_limited = IntCounter::with_opts(
Opts::new("wzp_federation_packets_rate_limited_total", "Federation packets dropped by rate limiter"),
).expect("metric");
let federation_active_rooms = IntGauge::with_opts(
Opts::new("wzp_federation_active_rooms", "Number of federated rooms currently active"),
).expect("metric");
let session_buffer_depth = IntGaugeVec::new(
Opts::new(
"wzp_relay_session_jitter_buffer_depth",
@@ -101,17 +133,42 @@ impl RelayMetrics {
)
.expect("metric");
let session_dred_reconstructions = IntCounterVec::new(
Opts::new(
"wzp_relay_session_dred_reconstructions_total",
"Frames reconstructed via DRED (Deep REDundancy) per session",
),
&["session_id"],
)
.expect("metric");
let session_classical_plc = IntCounterVec::new(
Opts::new(
"wzp_relay_session_classical_plc_total",
"Frames filled via classical Opus/Codec2 PLC per session",
),
&["session_id"],
)
.expect("metric");
registry.register(Box::new(active_sessions.clone())).expect("register");
registry.register(Box::new(active_rooms.clone())).expect("register");
registry.register(Box::new(packets_forwarded.clone())).expect("register");
registry.register(Box::new(bytes_forwarded.clone())).expect("register");
registry.register(Box::new(auth_attempts.clone())).expect("register");
registry.register(Box::new(handshake_duration.clone())).expect("register");
registry.register(Box::new(federation_peer_status.clone())).expect("register");
registry.register(Box::new(federation_peer_rtt_ms.clone())).expect("register");
registry.register(Box::new(federation_packets_forwarded.clone())).expect("register");
registry.register(Box::new(federation_packets_deduped.clone())).expect("register");
registry.register(Box::new(federation_packets_rate_limited.clone())).expect("register");
registry.register(Box::new(federation_active_rooms.clone())).expect("register");
registry.register(Box::new(session_buffer_depth.clone())).expect("register");
registry.register(Box::new(session_loss_pct.clone())).expect("register");
registry.register(Box::new(session_rtt_ms.clone())).expect("register");
registry.register(Box::new(session_underruns.clone())).expect("register");
registry.register(Box::new(session_overruns.clone())).expect("register");
registry.register(Box::new(session_dred_reconstructions.clone())).expect("register");
registry.register(Box::new(session_classical_plc.clone())).expect("register");
Self {
active_sessions,
@@ -120,11 +177,19 @@ impl RelayMetrics {
bytes_forwarded,
auth_attempts,
handshake_duration,
federation_peer_status,
federation_peer_rtt_ms,
federation_packets_forwarded,
federation_packets_deduped,
federation_packets_rate_limited,
federation_active_rooms,
session_buffer_depth,
session_loss_pct,
session_rtt_ms,
session_underruns,
session_overruns,
session_dred_reconstructions,
session_classical_plc,
registry,
}
}
@@ -176,6 +241,39 @@ impl RelayMetrics {
}
}
/// Phase 4: update per-session loss-recovery counters from a client's
/// `LossRecoveryUpdate` signal message. The client sends monotonic
/// totals (frames reconstructed since call start); we compute the
/// delta against the current Prometheus counter and increment by it.
/// IntCounterVec only increases, so a client restart that resets the
/// counter to 0 simply produces no delta until the new totals exceed
/// the Prometheus state.
pub fn update_session_loss_recovery(
&self,
session_id: &str,
dred_reconstructions: u64,
classical_plc: u64,
) {
let cur_dred = self
.session_dred_reconstructions
.with_label_values(&[session_id])
.get();
if dred_reconstructions > cur_dred {
self.session_dred_reconstructions
.with_label_values(&[session_id])
.inc_by(dred_reconstructions - cur_dred);
}
let cur_plc = self
.session_classical_plc
.with_label_values(&[session_id])
.get();
if classical_plc > cur_plc {
self.session_classical_plc
.with_label_values(&[session_id])
.inc_by(classical_plc - cur_plc);
}
}
/// Remove all per-session label values for a disconnected session.
pub fn remove_session_metrics(&self, session_id: &str) {
let _ = self.session_buffer_depth.remove_label_values(&[session_id]);
@@ -183,6 +281,10 @@ impl RelayMetrics {
let _ = self.session_rtt_ms.remove_label_values(&[session_id]);
let _ = self.session_underruns.remove_label_values(&[session_id]);
let _ = self.session_overruns.remove_label_values(&[session_id]);
let _ = self
.session_dred_reconstructions
.remove_label_values(&[session_id]);
let _ = self.session_classical_plc.remove_label_values(&[session_id]);
}
/// Get a reference to the underlying Prometheus registry.
@@ -201,11 +303,21 @@ impl RelayMetrics {
}
}
/// Start an HTTP server serving GET /metrics and GET /mesh on the given port.
pub async fn serve_metrics(port: u16, metrics: Arc<RelayMetrics>) {
use axum::{routing::get, Router};
/// Start an HTTP server serving GET /metrics, GET /mesh, presence, and route endpoints on the given port.
pub async fn serve_metrics(
port: u16,
metrics: Arc<RelayMetrics>,
presence: Option<Arc<tokio::sync::Mutex<crate::presence::PresenceRegistry>>>,
route_resolver: Option<Arc<crate::route::RouteResolver>>,
) {
use axum::{extract::Path, routing::get, Router};
let metrics_clone = metrics.clone();
let presence_all = presence.clone();
let presence_lookup = presence.clone();
let presence_peers = presence.clone();
let presence_route = presence;
let app = Router::new()
.route(
"/metrics",
@@ -220,6 +332,92 @@ pub async fn serve_metrics(port: u16, metrics: Arc<RelayMetrics>) {
let m = metrics_clone.clone();
async move { crate::probe::mesh_summary(m.registry()) }
}),
)
.route(
"/presence",
get(move || {
let reg = presence_all.clone();
async move {
match reg {
Some(r) => {
let r = r.lock().await;
let entries: Vec<serde_json::Value> = r.all_known().into_iter().map(|(fp, loc)| {
serde_json::json!({ "fingerprint": fp, "location": loc })
}).collect();
serde_json::to_string_pretty(&entries).unwrap_or_else(|_| "[]".to_string())
}
None => "[]".to_string(),
}
}
}),
)
.route(
"/presence/:fingerprint",
get(move |Path(fingerprint): Path<String>| {
let reg = presence_lookup.clone();
async move {
match reg {
Some(r) => {
let r = r.lock().await;
match r.lookup(&fingerprint) {
Some(loc) => serde_json::to_string_pretty(
&serde_json::json!({ "fingerprint": fingerprint, "location": loc })
).unwrap_or_else(|_| "{}".to_string()),
None => serde_json::json!({ "fingerprint": fingerprint, "location": null }).to_string(),
}
}
None => serde_json::json!({ "fingerprint": fingerprint, "location": null }).to_string(),
}
}
}),
)
.route(
"/peers",
get(move || {
let reg = presence_peers.clone();
async move {
match reg {
Some(r) => {
let r = r.lock().await;
let peers: Vec<serde_json::Value> = r.peers().iter().map(|(addr, peer)| {
serde_json::json!({
"addr": addr.to_string(),
"fingerprints": peer.fingerprints.iter().collect::<Vec<_>>(),
"rtt_ms": peer.rtt_ms,
})
}).collect();
serde_json::to_string_pretty(&peers).unwrap_or_else(|_| "[]".to_string())
}
None => "[]".to_string(),
}
}
}),
)
.route(
"/route/:fingerprint",
get(move |Path(fingerprint): Path<String>| {
let reg = presence_route.clone();
let resolver = route_resolver.clone();
async move {
match (reg, resolver) {
(Some(r), Some(res)) => {
let r = r.lock().await;
let route = res.resolve(&r, &fingerprint);
let json = res.route_json(&fingerprint, &route);
serde_json::to_string_pretty(&json)
.unwrap_or_else(|_| "{}".to_string())
}
_ => {
serde_json::json!({
"fingerprint": fingerprint,
"route": "not_found",
"relay_chain": [],
})
.to_string()
}
}
}
}),
);
let addr = std::net::SocketAddr::from(([0, 0, 0, 0], port));
@@ -281,10 +479,13 @@ mod tests {
};
m.update_session_quality("sess-cleanup", &report);
m.update_session_buffer("sess-cleanup", 42, 3, 1);
m.update_session_loss_recovery("sess-cleanup", 17, 4);
// Verify they appear
let output = m.metrics_handler();
assert!(output.contains("sess-cleanup"));
assert!(output.contains("wzp_relay_session_dred_reconstructions_total"));
assert!(output.contains("wzp_relay_session_classical_plc_total"));
// Remove and verify they are gone
m.remove_session_metrics("sess-cleanup");
@@ -292,6 +493,55 @@ mod tests {
assert!(!output.contains("sess-cleanup"));
}
/// Phase 4: LossRecoveryUpdate → per-session counters, monotonic delta
/// application.
#[test]
fn session_loss_recovery_monotonic_delta() {
let m = RelayMetrics::new();
let sess = "sess-dred";
// First update: 10 DRED, 2 PLC
m.update_session_loss_recovery(sess, 10, 2);
let dred1 = m
.session_dred_reconstructions
.with_label_values(&[sess])
.get();
let plc1 = m.session_classical_plc.with_label_values(&[sess]).get();
assert_eq!(dred1, 10);
assert_eq!(plc1, 2);
// Second update: 25 DRED, 5 PLC — counter advances by (15, 3)
m.update_session_loss_recovery(sess, 25, 5);
let dred2 = m
.session_dred_reconstructions
.with_label_values(&[sess])
.get();
let plc2 = m.session_classical_plc.with_label_values(&[sess]).get();
assert_eq!(dred2, 25);
assert_eq!(plc2, 5);
// Third update with LOWER values (e.g., client reset) — counters
// hold steady, no decrement.
m.update_session_loss_recovery(sess, 5, 1);
let dred3 = m
.session_dred_reconstructions
.with_label_values(&[sess])
.get();
let plc3 = m.session_classical_plc.with_label_values(&[sess]).get();
assert_eq!(dred3, 25, "counter must not decrease");
assert_eq!(plc3, 5, "counter must not decrease");
// Fourth update: client caught up and exceeded the old max.
m.update_session_loss_recovery(sess, 30, 8);
let dred4 = m
.session_dred_reconstructions
.with_label_values(&[sess])
.get();
let plc4 = m.session_classical_plc.with_label_values(&[sess]).get();
assert_eq!(dred4, 30);
assert_eq!(plc4, 8);
}
#[test]
fn metrics_increment() {
let m = RelayMetrics::new();

333
crates/wzp-relay/src/presence.rs Normal file
View File

@@ -0,0 +1,333 @@
//! Presence registry — tracks which fingerprints are connected to this relay
//! and to peer relays (via gossip over probe connections).
//!
//! This enables route resolution: given a fingerprint, determine whether the
//! user is local, on a known peer relay, or unknown.
use std::collections::{HashMap, HashSet};
use std::net::SocketAddr;
use std::time::{Duration, Instant};
use serde::Serialize;
// ---------------------------------------------------------------------------
// Data structures
// ---------------------------------------------------------------------------
/// Where a fingerprint is connected.
#[derive(Clone, Debug, PartialEq, Eq, Serialize)]
pub enum PresenceLocation {
/// Connected directly to this relay.
Local,
/// Connected to a peer relay at the given address.
Remote(SocketAddr),
}
/// Presence entry for a fingerprint connected directly to this relay.
#[derive(Clone, Debug)]
pub struct LocalPresence {
pub fingerprint: String,
pub alias: Option<String>,
pub connected_at: Instant,
pub room: Option<String>,
}
/// Presence entry for a fingerprint reported by a peer relay.
#[derive(Clone, Debug)]
pub struct RemotePresence {
pub fingerprint: String,
pub relay_addr: SocketAddr,
pub last_seen: Instant,
}
/// Known peer relay and its reported fingerprints.
#[derive(Clone, Debug)]
pub struct PeerRelay {
pub addr: SocketAddr,
pub fingerprints: HashSet<String>,
pub last_update: Instant,
pub rtt_ms: Option<f64>,
}
// ---------------------------------------------------------------------------
// Registry
// ---------------------------------------------------------------------------
/// Central presence registry tracking local and remote fingerprints.
pub struct PresenceRegistry {
/// Fingerprints connected directly to THIS relay.
local: HashMap<String, LocalPresence>,
/// Fingerprints reported by peer relays (via gossip).
remote: HashMap<String, RemotePresence>,
/// Known peer relays and their status.
peers: HashMap<SocketAddr, PeerRelay>,
}
impl PresenceRegistry {
/// Create an empty registry.
pub fn new() -> Self {
Self {
local: HashMap::new(),
remote: HashMap::new(),
peers: HashMap::new(),
}
}
/// Register a fingerprint as locally connected (called after auth + handshake).
pub fn register_local(&mut self, fingerprint: &str, alias: Option<String>, room: Option<String>) {
self.local.insert(fingerprint.to_string(), LocalPresence {
fingerprint: fingerprint.to_string(),
alias,
connected_at: Instant::now(),
room,
});
}
/// Unregister a locally connected fingerprint (called on disconnect).
pub fn unregister_local(&mut self, fingerprint: &str) {
self.local.remove(fingerprint);
}
/// Update the fingerprints reported by a peer relay.
/// Replaces the previous set for that peer.
pub fn update_peer(&mut self, addr: SocketAddr, fingerprints: HashSet<String>) {
let now = Instant::now();
// Remove old remote entries that belonged to this peer
self.remote.retain(|_, rp| rp.relay_addr != addr);
// Insert new remote entries
for fp in &fingerprints {
self.remote.insert(fp.clone(), RemotePresence {
fingerprint: fp.clone(),
relay_addr: addr,
last_seen: now,
});
}
// Update the peer record
let peer = self.peers.entry(addr).or_insert_with(|| PeerRelay {
addr,
fingerprints: HashSet::new(),
last_update: now,
rtt_ms: None,
});
peer.fingerprints = fingerprints;
peer.last_update = now;
}
/// Look up where a fingerprint is connected.
/// Local presence takes priority over remote.
pub fn lookup(&self, fingerprint: &str) -> Option<PresenceLocation> {
if self.local.contains_key(fingerprint) {
return Some(PresenceLocation::Local);
}
if let Some(rp) = self.remote.get(fingerprint) {
return Some(PresenceLocation::Remote(rp.relay_addr));
}
None
}
/// Return all fingerprints connected directly to this relay.
pub fn local_fingerprints(&self) -> HashSet<String> {
self.local.keys().cloned().collect()
}
/// Return a full dump of every known fingerprint and its location.
pub fn all_known(&self) -> Vec<(String, PresenceLocation)> {
let mut out = Vec::new();
for fp in self.local.keys() {
out.push((fp.clone(), PresenceLocation::Local));
}
for (fp, rp) in &self.remote {
// Skip if also local (local wins)
if !self.local.contains_key(fp) {
out.push((fp.clone(), PresenceLocation::Remote(rp.relay_addr)));
}
}
out
}
/// Remove remote entries older than `timeout`.
pub fn expire_stale(&mut self, timeout: Duration) {
let cutoff = Instant::now() - timeout;
// Expire remote presence entries
self.remote.retain(|_, rp| rp.last_seen > cutoff);
// Expire peer relay records and their fingerprint sets
let stale_peers: Vec<SocketAddr> = self.peers
.iter()
.filter(|(_, p)| p.last_update <= cutoff)
.map(|(addr, _)| *addr)
.collect();
for addr in stale_peers {
self.peers.remove(&addr);
}
}
/// Return a reference to the peer relay map (for HTTP API).
pub fn peers(&self) -> &HashMap<SocketAddr, PeerRelay> {
&self.peers
}
/// Return a reference to the local presence map (for HTTP API).
pub fn local_entries(&self) -> &HashMap<String, LocalPresence> {
&self.local
}
}
// ---------------------------------------------------------------------------
// Tests
// ---------------------------------------------------------------------------
#[cfg(test)]
mod tests {
use super::*;
use std::net::SocketAddr;
fn addr(s: &str) -> SocketAddr {
s.parse().unwrap()
}
#[test]
fn register_and_lookup_local() {
let mut reg = PresenceRegistry::new();
reg.register_local("aabbccdd", Some("alice".into()), Some("room1".into()));
assert_eq!(reg.lookup("aabbccdd"), Some(PresenceLocation::Local));
// Unknown fingerprint returns None
assert_eq!(reg.lookup("00000000"), None);
}
#[test]
fn unregister_removes() {
let mut reg = PresenceRegistry::new();
reg.register_local("aabbccdd", None, None);
assert_eq!(reg.lookup("aabbccdd"), Some(PresenceLocation::Local));
reg.unregister_local("aabbccdd");
assert_eq!(reg.lookup("aabbccdd"), None);
}
#[test]
fn update_peer_and_lookup() {
let mut reg = PresenceRegistry::new();
let peer = addr("10.0.0.2:4433");
let mut fps = HashSet::new();
fps.insert("deadbeef".to_string());
fps.insert("cafebabe".to_string());
reg.update_peer(peer, fps);
assert_eq!(reg.lookup("deadbeef"), Some(PresenceLocation::Remote(peer)));
assert_eq!(reg.lookup("cafebabe"), Some(PresenceLocation::Remote(peer)));
assert_eq!(reg.lookup("unknown"), None);
}
#[test]
fn expire_stale_removes_old() {
let mut reg = PresenceRegistry::new();
let peer = addr("10.0.0.3:4433");
let mut fps = HashSet::new();
fps.insert("olduser".to_string());
reg.update_peer(peer, fps);
// Verify it's there
assert_eq!(reg.lookup("olduser"), Some(PresenceLocation::Remote(peer)));
// Manually backdate the last_seen and last_update
if let Some(rp) = reg.remote.get_mut("olduser") {
rp.last_seen = Instant::now() - Duration::from_secs(120);
}
if let Some(p) = reg.peers.get_mut(&peer) {
p.last_update = Instant::now() - Duration::from_secs(120);
}
// Expire with 60s timeout — should remove the 120s-old entries
reg.expire_stale(Duration::from_secs(60));
assert_eq!(reg.lookup("olduser"), None);
assert!(reg.peers.get(&peer).is_none());
}
#[test]
fn local_fingerprints_list() {
let mut reg = PresenceRegistry::new();
reg.register_local("fp1", None, None);
reg.register_local("fp2", Some("bob".into()), Some("room-a".into()));
reg.register_local("fp3", None, None);
let fps = reg.local_fingerprints();
assert_eq!(fps.len(), 3);
assert!(fps.contains("fp1"));
assert!(fps.contains("fp2"));
assert!(fps.contains("fp3"));
}
#[test]
fn all_known_includes_local_and_remote() {
let mut reg = PresenceRegistry::new();
reg.register_local("local1", None, None);
let peer = addr("10.0.0.5:4433");
let mut fps = HashSet::new();
fps.insert("remote1".to_string());
reg.update_peer(peer, fps);
let all = reg.all_known();
assert_eq!(all.len(), 2);
let local_entries: Vec<_> = all.iter()
.filter(|(_, loc)| *loc == PresenceLocation::Local)
.collect();
assert_eq!(local_entries.len(), 1);
assert_eq!(local_entries[0].0, "local1");
let remote_entries: Vec<_> = all.iter()
.filter(|(_, loc)| matches!(loc, PresenceLocation::Remote(_)))
.collect();
assert_eq!(remote_entries.len(), 1);
assert_eq!(remote_entries[0].0, "remote1");
}
#[test]
fn local_overrides_remote_in_lookup() {
let mut reg = PresenceRegistry::new();
let peer = addr("10.0.0.6:4433");
// Register as remote first
let mut fps = HashSet::new();
fps.insert("dupfp".to_string());
reg.update_peer(peer, fps);
assert_eq!(reg.lookup("dupfp"), Some(PresenceLocation::Remote(peer)));
// Now register locally — local should win
reg.register_local("dupfp", None, None);
assert_eq!(reg.lookup("dupfp"), Some(PresenceLocation::Local));
}
#[test]
fn update_peer_replaces_old_fingerprints() {
let mut reg = PresenceRegistry::new();
let peer = addr("10.0.0.7:4433");
let mut fps1 = HashSet::new();
fps1.insert("user_a".to_string());
fps1.insert("user_b".to_string());
reg.update_peer(peer, fps1);
assert_eq!(reg.lookup("user_a"), Some(PresenceLocation::Remote(peer)));
assert_eq!(reg.lookup("user_b"), Some(PresenceLocation::Remote(peer)));
// Update with only user_b — user_a should be gone
let mut fps2 = HashSet::new();
fps2.insert("user_b".to_string());
reg.update_peer(peer, fps2);
assert_eq!(reg.lookup("user_a"), None);
assert_eq!(reg.lookup("user_b"), Some(PresenceLocation::Remote(peer)));
}
}

56
crates/wzp-relay/src/probe.rs
View File

@@ -156,14 +156,19 @@ impl SlidingWindow {
pub struct ProbeRunner {
config: ProbeConfig,
metrics: ProbeMetrics,
presence: Option<Arc<tokio::sync::Mutex<crate::presence::PresenceRegistry>>>,
}
impl ProbeRunner {
/// Create a new probe runner, registering metrics with the given registry.
pub fn new(config: ProbeConfig, registry: &Registry) -> Self {
pub fn new(
config: ProbeConfig,
registry: &Registry,
presence: Option<Arc<tokio::sync::Mutex<crate::presence::PresenceRegistry>>>,
) -> Self {
let target_str = config.target.to_string();
let metrics = ProbeMetrics::register(&target_str, registry);
Self { config, metrics }
Self { config, metrics, presence }
}
/// Run the probe forever. This function never returns under normal operation.
@@ -215,6 +220,8 @@ impl ProbeRunner {
let jitter_gauge = self.metrics.jitter_ms.clone();
let up_gauge = self.metrics.up.clone();
let recv_presence = self.presence.clone();
let recv_target = self.config.target;
let recv_handle = tokio::spawn(async move {
loop {
match recv_transport.recv_signal().await {
@@ -230,8 +237,17 @@ impl ProbeRunner {
loss_gauge.set(w.loss_pct());
jitter_gauge.set(w.jitter_ms());
}
Ok(Some(SignalMessage::PresenceUpdate { fingerprints, relay_addr })) => {
if let Some(ref reg) = recv_presence {
// Parse the relay_addr; fall back to the connection target
let addr = relay_addr.parse().unwrap_or(recv_target);
let fps: std::collections::HashSet<String> = fingerprints.into_iter().collect();
let mut r = reg.lock().await;
r.update_peer(addr, fps);
}
}
Ok(Some(_)) => {
// Ignore non-Pong signals
// Ignore other signals
}
Ok(None) => {
info!("probe recv: connection closed");
@@ -247,8 +263,9 @@ impl ProbeRunner {
}
});
// Send ping loop
// Send ping loop (+ presence gossip every 10 pings)
let mut interval = tokio::time::interval(self.config.interval);
let mut ping_count: u64 = 0;
loop {
interval.tick().await;
@@ -275,6 +292,24 @@ impl ProbeRunner {
recv_handle.abort();
return Err(e.into());
}
// Send presence update every 10 pings (~10 seconds)
ping_count += 1;
if ping_count % 10 == 0 {
if let Some(ref reg) = self.presence {
let fps: Vec<String> = {
let r = reg.lock().await;
r.local_fingerprints().into_iter().collect()
};
let msg = SignalMessage::PresenceUpdate {
fingerprints: fps,
relay_addr: self.config.target.to_string(),
};
if let Err(e) = transport.send_signal(&msg).await {
warn!(target = %self.config.target, "presence update send error: {e}");
}
}
}
}
}
}
@@ -289,12 +324,16 @@ pub struct ProbeMesh {
impl ProbeMesh {
/// Create a new mesh coordinator, registering metrics for every target.
pub fn new(targets: Vec<SocketAddr>, registry: &Registry) -> Self {
pub fn new(
targets: Vec<SocketAddr>,
registry: &Registry,
presence: Option<Arc<tokio::sync::Mutex<crate::presence::PresenceRegistry>>>,
) -> Self {
let runners = targets
.into_iter()
.map(|addr| {
let config = ProbeConfig::new(addr);
ProbeRunner::new(config, registry)
ProbeRunner::new(config, registry, presence.clone())
})
.collect();
Self { runners }
@@ -409,6 +448,7 @@ mod tests {
fn probe_metrics_register() {
let registry = Registry::new();
let _metrics = ProbeMetrics::register("127.0.0.1:4433", &registry);
// (ProbeRunner::new signature changed but this test only checks ProbeMetrics)
let encoder = prometheus::TextEncoder::new();
let families = registry.gather();
@@ -526,7 +566,7 @@ mod tests {
"127.0.0.2:4433".parse().unwrap(),
"127.0.0.3:4433".parse().unwrap(),
];
let mesh = ProbeMesh::new(targets, &registry);
let mesh = ProbeMesh::new(targets, &registry, None);
assert_eq!(mesh.target_count(), 3);
// Verify metrics were registered for each target
@@ -586,7 +626,7 @@ mod tests {
#[test]
fn mesh_zero_targets() {
let registry = Registry::new();
let mesh = ProbeMesh::new(vec![], &registry);
let mesh = ProbeMesh::new(vec![], &registry, None);
assert_eq!(mesh.target_count(), 0);
}
}

483
crates/wzp-relay/src/relay_link.rs Normal file
View File

@@ -0,0 +1,483 @@
//! Per-session relay forwarding — connect to a peer relay and forward only
//! specific sessions' media packets there.
//!
//! This is the building block for relay chaining (multi-hop calls). Instead
//! of forwarding ALL traffic to a single hardcoded relay (forward mode) or
//! to everyone in a room (SFU mode), a `RelayLink` represents a QUIC
//! connection to one peer relay used for forwarding a specific set of
//! sessions.
//!
//! `RelayLinkManager` tracks all active relay links and their session
//! assignments, providing get-or-connect semantics and idle cleanup.
use std::collections::{HashMap, HashSet};
use std::net::SocketAddr;
use std::sync::Arc;
use tracing::{debug, info, warn};
use wzp_proto::MediaPacket;
use wzp_proto::MediaTransport;
/// A connection to a peer relay for forwarding specific sessions.
///
/// Each `RelayLink` holds a QUIC transport to one peer relay and tracks
/// which session IDs are being forwarded through it. When all sessions
/// are removed the link is considered idle and can be cleaned up.
pub struct RelayLink {
target_addr: SocketAddr,
/// The underlying QUIC transport. `None` only in unit-test stubs where
/// no real connection is established.
transport: Option<Arc<wzp_transport::QuinnTransport>>,
active_sessions: HashSet<String>,
}
impl RelayLink {
/// Connect to a peer relay at `target`.
///
/// Uses the `"_relay"` SNI to signal that this is a relay-to-relay
/// connection (similar to `"_probe"` for health checks). The peer
/// should skip normal client auth/handshake for relay-SNI connections.
pub async fn connect(target: SocketAddr) -> Result<Self, anyhow::Error> {
// Create a client-only endpoint on an OS-assigned port.
let endpoint = wzp_transport::create_endpoint(
"0.0.0.0:0".parse().unwrap(),
None,
)?;
let client_cfg = wzp_transport::client_config();
let conn = wzp_transport::connect(&endpoint, target, "_relay", client_cfg).await?;
let transport = Arc::new(wzp_transport::QuinnTransport::new(conn));
info!(%target, "relay link established");
Ok(Self {
target_addr: target,
transport: Some(transport),
active_sessions: HashSet::new(),
})
}
/// Create a `RelayLink` from an existing transport (useful when the
/// connection was established through other means).
pub fn from_transport(
target_addr: SocketAddr,
transport: Arc<wzp_transport::QuinnTransport>,
) -> Self {
Self {
target_addr,
transport: Some(transport),
active_sessions: HashSet::new(),
}
}
/// Create a stub `RelayLink` with no transport — for unit tests that
/// only exercise session-tracking / management logic.
#[cfg(test)]
fn stub(target_addr: SocketAddr) -> Self {
Self {
target_addr,
transport: None,
active_sessions: HashSet::new(),
}
}
/// Forward a media packet to this peer relay.
pub async fn forward(&self, pkt: &MediaPacket) -> Result<(), anyhow::Error> {
match &self.transport {
Some(t) => t
.send_media(pkt)
.await
.map_err(|e| anyhow::anyhow!("relay link forward to {}: {e}", self.target_addr)),
None => Err(anyhow::anyhow!(
"relay link to {} has no transport (stub)",
self.target_addr
)),
}
}
/// The address of the peer relay this link connects to.
pub fn target_addr(&self) -> SocketAddr {
self.target_addr
}
/// A reference to the underlying QUIC transport (if connected).
pub fn transport(&self) -> Option<&Arc<wzp_transport::QuinnTransport>> {
self.transport.as_ref()
}
/// Add a session to be forwarded through this link.
pub fn add_session(&mut self, session_id: &str) {
if self.active_sessions.insert(session_id.to_string()) {
debug!(
target_relay = %self.target_addr,
session = session_id,
count = self.active_sessions.len(),
"session added to relay link"
);
}
}
/// Remove a session from this link.
pub fn remove_session(&mut self, session_id: &str) {
if self.active_sessions.remove(session_id) {
debug!(
target_relay = %self.target_addr,
session = session_id,
count = self.active_sessions.len(),
"session removed from relay link"
);
}
}
/// Check if this link is forwarding any sessions.
pub fn is_idle(&self) -> bool {
self.active_sessions.is_empty()
}
/// Number of sessions being forwarded through this link.
pub fn session_count(&self) -> usize {
self.active_sessions.len()
}
/// Check if a specific session is being forwarded through this link.
pub fn has_session(&self, session_id: &str) -> bool {
self.active_sessions.contains(session_id)
}
/// Close the underlying QUIC connection (no-op if no transport).
pub async fn close(&self) {
info!(target_relay = %self.target_addr, "closing relay link");
if let Some(ref t) = self.transport {
let _ = t.close().await;
}
}
}
// ---------------------------------------------------------------------------
// RelayLinkManager
// ---------------------------------------------------------------------------
/// Manages connections to multiple peer relays for per-session forwarding.
///
/// Each peer relay gets at most one `RelayLink`. Sessions are registered
/// on specific links, and idle links (no sessions) can be cleaned up.
pub struct RelayLinkManager {
links: HashMap<SocketAddr, RelayLink>,
}
impl RelayLinkManager {
/// Create an empty link manager.
pub fn new() -> Self {
Self {
links: HashMap::new(),
}
}
/// Get or create a link to a peer relay.
///
/// If a link already exists it is returned. Otherwise a new QUIC
/// connection is established using `RelayLink::connect`.
pub async fn get_or_connect(
&mut self,
target: SocketAddr,
) -> Result<&RelayLink, anyhow::Error> {
if !self.links.contains_key(&target) {
let link = RelayLink::connect(target).await?;
self.links.insert(target, link);
}
Ok(self.links.get(&target).unwrap())
}
/// Get a mutable reference to an existing link (if any).
pub fn get_mut(&mut self, target: &SocketAddr) -> Option<&mut RelayLink> {
self.links.get_mut(target)
}
/// Get a reference to an existing link (if any).
pub fn get(&self, target: &SocketAddr) -> Option<&RelayLink> {
self.links.get(target)
}
/// Forward a packet for a specific session to the appropriate relay.
///
/// The link must already exist (created via `get_or_connect`).
pub async fn forward_to(
&self,
target: SocketAddr,
pkt: &MediaPacket,
) -> Result<(), anyhow::Error> {
match self.links.get(&target) {
Some(link) => link.forward(pkt).await,
None => Err(anyhow::anyhow!(
"no relay link to {target} — call get_or_connect first"
)),
}
}
/// Register a session on a specific link.
///
/// The link must already exist. If it does not, a warning is logged
/// and the registration is silently skipped.
pub fn register_session(&mut self, target: SocketAddr, session_id: &str) {
match self.links.get_mut(&target) {
Some(link) => link.add_session(session_id),
None => {
warn!(
%target,
session = session_id,
"cannot register session — no link to target"
);
}
}
}
/// Unregister a session. If the link becomes idle, close and remove it.
pub async fn unregister_session(&mut self, target: SocketAddr, session_id: &str) {
let should_remove = if let Some(link) = self.links.get_mut(&target) {
link.remove_session(session_id);
if link.is_idle() {
link.close().await;
true
} else {
false
}
} else {
false
};
if should_remove {
self.links.remove(&target);
info!(%target, "idle relay link removed");
}
}
/// Close all links and clear the manager.
pub async fn close_all(&mut self) {
for (addr, link) in self.links.drain() {
info!(%addr, "closing relay link (shutdown)");
link.close().await;
}
}
/// Number of active links.
pub fn link_count(&self) -> usize {
self.links.len()
}
/// Total number of sessions being forwarded across all links.
pub fn session_count(&self) -> usize {
self.links.values().map(|l| l.session_count()).sum()
}
/// Insert a pre-built relay link (for testing or manual setup).
pub fn insert(&mut self, link: RelayLink) {
self.links.insert(link.target_addr(), link);
}
}
// ---------------------------------------------------------------------------
// Tests
// ---------------------------------------------------------------------------
#[cfg(test)]
mod tests {
use super::*;
fn addr(s: &str) -> SocketAddr {
s.parse().unwrap()
}
// ---------- RelayLink session tracking ----------
#[test]
fn link_manager_tracks_sessions() {
let mut mgr = RelayLinkManager::new();
let target1 = addr("10.0.0.2:4433");
let mut link = RelayLink::stub(target1);
link.add_session("session-aaa");
link.add_session("session-bbb");
mgr.insert(link);
assert_eq!(mgr.link_count(), 1);
assert_eq!(mgr.session_count(), 2);
// Register another session on the same link
mgr.register_session(target1, "session-ccc");
assert_eq!(mgr.session_count(), 3);
// Verify individual link
let link_ref = mgr.get(&target1).unwrap();
assert!(link_ref.has_session("session-aaa"));
assert!(link_ref.has_session("session-bbb"));
assert!(link_ref.has_session("session-ccc"));
assert!(!link_ref.has_session("unknown"));
}
#[test]
fn link_manager_idle_detection() {
let mut link = RelayLink::stub(addr("10.0.0.3:4433"));
// Empty link is idle
assert!(link.is_idle());
assert_eq!(link.session_count(), 0);
// Add a session — no longer idle
link.add_session("sess-1");
assert!(!link.is_idle());
assert_eq!(link.session_count(), 1);
// Remove it — idle again
link.remove_session("sess-1");
assert!(link.is_idle());
assert_eq!(link.session_count(), 0);
}
#[test]
fn session_forward_signal_roundtrip() {
use wzp_proto::SignalMessage;
// SessionForward roundtrip
let msg = SignalMessage::SessionForward {
session_id: "abcd1234".to_string(),
target_fingerprint: "deadbeef".to_string(),
source_relay: "10.0.0.1:4433".to_string(),
};
let json = serde_json::to_string(&msg).unwrap();
let decoded: SignalMessage = serde_json::from_str(&json).unwrap();
match decoded {
SignalMessage::SessionForward {
session_id,
target_fingerprint,
source_relay,
} => {
assert_eq!(session_id, "abcd1234");
assert_eq!(target_fingerprint, "deadbeef");
assert_eq!(source_relay, "10.0.0.1:4433");
}
_ => panic!("expected SessionForward variant"),
}
// SessionForwardAck roundtrip
let ack = SignalMessage::SessionForwardAck {
session_id: "abcd1234".to_string(),
room_name: "relay-room-42".to_string(),
};
let json = serde_json::to_string(&ack).unwrap();
let decoded: SignalMessage = serde_json::from_str(&json).unwrap();
match decoded {
SignalMessage::SessionForwardAck {
session_id,
room_name,
} => {
assert_eq!(session_id, "abcd1234");
assert_eq!(room_name, "relay-room-42");
}
_ => panic!("expected SessionForwardAck variant"),
}
}
#[test]
fn link_manager_multi_target() {
let mut mgr = RelayLinkManager::new();
let target_a = addr("10.0.0.2:4433");
let target_b = addr("10.0.0.3:4433");
let target_c = addr("10.0.0.4:4433");
for (target, sessions) in [
(target_a, vec!["s1", "s2"]),
(target_b, vec!["s3"]),
(target_c, vec!["s4", "s5", "s6"]),
] {
let mut link = RelayLink::stub(target);
for s in sessions {
link.add_session(s);
}
mgr.insert(link);
}
assert_eq!(mgr.link_count(), 3);
assert_eq!(mgr.session_count(), 6); // 2 + 1 + 3
assert_eq!(mgr.get(&target_a).unwrap().session_count(), 2);
assert_eq!(mgr.get(&target_b).unwrap().session_count(), 1);
assert_eq!(mgr.get(&target_c).unwrap().session_count(), 3);
}
#[test]
fn link_manager_cleanup() {
let mut mgr = RelayLinkManager::new();
let target = addr("10.0.0.5:4433");
let mut link = RelayLink::stub(target);
link.add_session("s1");
link.add_session("s2");
link.add_session("s3");
mgr.insert(link);
assert_eq!(mgr.link_count(), 1);
assert_eq!(mgr.session_count(), 3);
// Remove sessions one by one via the manager's mutable access.
// We cannot call the async unregister_session with stub links here,
// so we exercise the synchronous management path directly.
{
let link = mgr.get_mut(&target).unwrap();
link.remove_session("s1");
assert!(!link.is_idle());
link.remove_session("s2");
assert!(!link.is_idle());
link.remove_session("s3");
assert!(link.is_idle());
}
// All sessions removed — link is idle
assert_eq!(mgr.session_count(), 0);
assert!(mgr.get(&target).unwrap().is_idle());
// Simulate what unregister_session does: remove the idle link
mgr.links.remove(&target);
assert_eq!(mgr.link_count(), 0);
}
#[test]
fn register_session_on_nonexistent_link_is_noop() {
let mut mgr = RelayLinkManager::new();
// Should not panic, just warn
mgr.register_session(addr("10.0.0.99:4433"), "orphan-session");
assert_eq!(mgr.link_count(), 0);
assert_eq!(mgr.session_count(), 0);
}
#[test]
fn forward_to_nonexistent_link_errors() {
let mgr = RelayLinkManager::new();
let target = addr("10.0.0.99:4433");
let pkt = MediaPacket {
header: wzp_proto::packet::MediaHeader {
version: 0,
is_repair: false,
codec_id: wzp_proto::CodecId::Opus16k,
has_quality_report: false,
fec_ratio_encoded: 0,
seq: 1,
timestamp: 100,
fec_block: 0,
fec_symbol: 0,
reserved: 0,
csrc_count: 0,
},
payload: bytes::Bytes::from_static(b"test"),
quality_report: None,
};
let rt = tokio::runtime::Builder::new_current_thread()
.build()
.unwrap();
let result = rt.block_on(mgr.forward_to(target, &pkt));
assert!(result.is_err());
assert!(result.unwrap_err().to_string().contains("no relay link"));
}
}

454
crates/wzp-relay/src/room.rs
View File

@@ -10,7 +10,7 @@ use std::time::Duration;
use bytes::Bytes;
use tokio::sync::Mutex;
use tracing::{error, info, warn};
use tracing::{debug, error, info, trace, warn};
use wzp_proto::packet::TrunkFrame;
use wzp_proto::MediaTransport;
@@ -18,6 +18,38 @@ use wzp_proto::MediaTransport;
use crate::metrics::RelayMetrics;
use crate::trunk::TrunkBatcher;
/// Debug tap: logs packet metadata for matching rooms.
#[derive(Clone)]
pub struct DebugTap {
/// Room name filter ("*" = all rooms, or specific room name/hash).
pub room_filter: String,
}
impl DebugTap {
pub fn matches(&self, room_name: &str) -> bool {
self.room_filter == "*" || self.room_filter == room_name
}
pub fn log_packet(&self, room: &str, dir: &str, addr: &std::net::SocketAddr, pkt: &wzp_proto::MediaPacket, fan_out: usize) {
let h = &pkt.header;
info!(
target: "debug_tap",
room = %room,
dir = dir,
addr = %addr,
seq = h.seq,
codec = ?h.codec_id,
ts = h.timestamp,
fec_block = h.fec_block,
fec_sym = h.fec_symbol,
repair = h.is_repair,
len = pkt.payload.len(),
fan_out,
"TAP"
);
}
}
/// Unique participant ID within a room.
pub type ParticipantId = u64;
@@ -27,11 +59,80 @@ fn next_id() -> ParticipantId {
NEXT_PARTICIPANT_ID.fetch_add(1, Ordering::Relaxed)
}
/// Events emitted by RoomManager for federation to observe.
#[derive(Clone, Debug)]
pub enum RoomEvent {
/// First local participant joined this room.
LocalJoin { room: String },
/// Last local participant left this room.
LocalLeave { room: String },
}
/// Outbound federation media from a local participant.
pub struct FederationMediaOut {
pub room_name: String,
pub room_hash: [u8; 8],
pub data: Bytes,
}
/// How to send data to a participant — either via QUIC transport or WebSocket channel.
#[derive(Clone)]
pub enum ParticipantSender {
Quic(Arc<wzp_transport::QuinnTransport>),
WebSocket(tokio::sync::mpsc::Sender<Bytes>),
}
impl ParticipantSender {
/// Send raw bytes to this participant.
pub async fn send_raw(&self, data: &[u8]) -> Result<(), String> {
match self {
ParticipantSender::WebSocket(tx) => {
tx.try_send(Bytes::copy_from_slice(data))
.map_err(|e| format!("ws send: {e}"))
}
ParticipantSender::Quic(transport) => {
let pkt = wzp_proto::MediaPacket {
header: wzp_proto::packet::MediaHeader::default_pcm(),
payload: Bytes::copy_from_slice(data),
quality_report: None,
};
transport.send_media(&pkt).await.map_err(|e| format!("quic send: {e}"))
}
}
}
/// Check if this is a QUIC participant.
pub fn is_quic(&self) -> bool {
matches!(self, ParticipantSender::Quic(_))
}
/// Get the QUIC transport if this is a QUIC participant.
pub fn as_quic(&self) -> Option<&Arc<wzp_transport::QuinnTransport>> {
match self {
ParticipantSender::Quic(t) => Some(t),
_ => None,
}
}
}
/// Broadcast a signal message to a list of participant senders.
pub async fn broadcast_signal(senders: &[ParticipantSender], msg: &wzp_proto::SignalMessage) {
for sender in senders {
if let ParticipantSender::Quic(t) = sender {
if let Err(e) = t.send_signal(msg).await {
warn!("broadcast_signal error: {e}");
}
}
}
}
/// A participant in a room.
struct Participant {
id: ParticipantId,
_addr: std::net::SocketAddr,
transport: Arc<wzp_transport::QuinnTransport>,
sender: ParticipantSender,
fingerprint: Option<String>,
alias: Option<String>,
}
/// A room holding multiple participants.
@@ -46,10 +147,16 @@ impl Room {
}
}
fn add(&mut self, addr: std::net::SocketAddr, transport: Arc<wzp_transport::QuinnTransport>) -> ParticipantId {
fn add(
&mut self,
addr: std::net::SocketAddr,
sender: ParticipantSender,
fingerprint: Option<String>,
alias: Option<String>,
) -> ParticipantId {
let id = next_id();
info!(room_size = self.participants.len() + 1, participant = id, %addr, "joined room");
self.participants.push(Participant { id, _addr: addr, transport });
self.participants.push(Participant { id, _addr: addr, sender, fingerprint, alias });
id
}
@@ -58,14 +165,31 @@ impl Room {
info!(room_size = self.participants.len(), participant = id, "left room");
}
fn others(&self, exclude_id: ParticipantId) -> Vec<Arc<wzp_transport::QuinnTransport>> {
fn others(&self, exclude_id: ParticipantId) -> Vec<ParticipantSender> {
self.participants
.iter()
.filter(|p| p.id != exclude_id)
.map(|p| p.transport.clone())
.map(|p| p.sender.clone())
.collect()
}
/// Build a RoomUpdate participant list.
fn participant_list(&self) -> Vec<wzp_proto::packet::RoomParticipant> {
self.participants
.iter()
.map(|p| wzp_proto::packet::RoomParticipant {
fingerprint: p.fingerprint.clone().unwrap_or_default(),
alias: p.alias.clone(),
relay_label: None, // local participant
})
.collect()
}
/// Get all senders (for broadcasting to everyone including the joiner).
fn all_senders(&self) -> Vec<ParticipantSender> {
self.participants.iter().map(|p| p.sender.clone()).collect()
}
fn is_empty(&self) -> bool {
self.participants.is_empty()
}
@@ -82,24 +206,35 @@ pub struct RoomManager {
/// When `None`, rooms are open (no auth mode). When `Some`, only listed
/// fingerprints can join the corresponding room.
acl: Option<HashMap<String, HashSet<String>>>,
/// Channel for room lifecycle events (federation subscribes).
event_tx: tokio::sync::broadcast::Sender<RoomEvent>,
}
impl RoomManager {
pub fn new() -> Self {
let (event_tx, _) = tokio::sync::broadcast::channel(64);
Self {
rooms: HashMap::new(),
acl: None,
event_tx,
}
}
/// Create a room manager with ACL enforcement enabled.
pub fn with_acl() -> Self {
let (event_tx, _) = tokio::sync::broadcast::channel(64);
Self {
rooms: HashMap::new(),
acl: Some(HashMap::new()),
event_tx,
}
}
/// Subscribe to room lifecycle events (for federation).
pub fn subscribe_events(&self) -> tokio::sync::broadcast::Receiver<RoomEvent> {
self.event_tx.subscribe()
}
/// Grant a fingerprint access to a room.
pub fn allow(&mut self, room_name: &str, fingerprint: &str) {
if let Some(ref mut acl) = self.acl {
@@ -125,39 +260,94 @@ impl RoomManager {
}
}
/// Join a room. Returns the participant ID or an error if unauthorized.
/// Join a room. Returns (participant_id, room_update_msg, all_senders) for broadcasting.
pub fn join(
&mut self,
room_name: &str,
addr: std::net::SocketAddr,
transport: Arc<wzp_transport::QuinnTransport>,
sender: ParticipantSender,
fingerprint: Option<&str>,
) -> Result<ParticipantId, String> {
alias: Option<&str>,
) -> Result<(ParticipantId, wzp_proto::SignalMessage, Vec<ParticipantSender>), String> {
if !self.is_authorized(room_name, fingerprint) {
warn!(room = room_name, fingerprint = ?fingerprint, "unauthorized room join attempt");
return Err("not authorized for this room".to_string());
}
let was_empty = !self.rooms.contains_key(room_name)
|| self.rooms.get(room_name).map_or(true, |r| r.is_empty());
let room = self.rooms.entry(room_name.to_string()).or_insert_with(Room::new);
Ok(room.add(addr, transport))
let id = room.add(addr, sender, fingerprint.map(|s| s.to_string()), alias.map(|s| s.to_string()));
if was_empty {
let _ = self.event_tx.send(RoomEvent::LocalJoin { room: room_name.to_string() });
}
let update = wzp_proto::SignalMessage::RoomUpdate {
count: room.len() as u32,
participants: room.participant_list(),
};
let senders = room.all_senders();
Ok((id, update, senders))
}
/// Leave a room. Removes the room if empty.
pub fn leave(&mut self, room_name: &str, participant_id: ParticipantId) {
/// Join a room via WebSocket. Convenience wrapper around `join()`.
pub fn join_ws(
&mut self,
room_name: &str,
addr: std::net::SocketAddr,
sender: tokio::sync::mpsc::Sender<Bytes>,
fingerprint: Option<&str>,
) -> Result<ParticipantId, String> {
let (id, _update, _senders) = self.join(room_name, addr, ParticipantSender::WebSocket(sender), fingerprint, None)?;
Ok(id)
}
/// Get list of active room names.
pub fn active_rooms(&self) -> Vec<String> {
self.rooms.keys().cloned().collect()
}
/// Get participant list for a room (fingerprint + alias).
pub fn local_participant_list(&self, room_name: &str) -> Vec<wzp_proto::packet::RoomParticipant> {
self.rooms.get(room_name)
.map(|room| room.participant_list())
.unwrap_or_default()
}
/// Get all senders for participants in a room (for federation inbound media delivery).
pub fn local_senders(&self, room_name: &str) -> Vec<ParticipantSender> {
self.rooms.get(room_name)
.map(|room| room.participants.iter()
.map(|p| p.sender.clone())
.collect())
.unwrap_or_default()
}
/// Leave a room. Returns (room_update_msg, remaining_senders) for broadcasting, or None if room is now empty.
pub fn leave(&mut self, room_name: &str, participant_id: ParticipantId) -> Option<(wzp_proto::SignalMessage, Vec<ParticipantSender>)> {
if let Some(room) = self.rooms.get_mut(room_name) {
room.remove(participant_id);
if room.is_empty() {
self.rooms.remove(room_name);
let _ = self.event_tx.send(RoomEvent::LocalLeave { room: room_name.to_string() });
info!(room = room_name, "room closed (empty)");
return None;
}
let update = wzp_proto::SignalMessage::RoomUpdate {
count: room.len() as u32,
participants: room.participant_list(),
};
let senders = room.all_senders();
Some((update, senders))
} else {
None
}
}
/// Get transports for all OTHER participants in a room.
/// Get senders for all OTHER participants in a room.
pub fn others(
&self,
room_name: &str,
participant_id: ParticipantId,
) -> Vec<Arc<wzp_transport::QuinnTransport>> {
) -> Vec<ParticipantSender> {
self.rooms
.get(room_name)
.map(|r| r.others(participant_id))
@@ -247,6 +437,9 @@ pub async fn run_participant(
metrics: Arc<RelayMetrics>,
session_id: &str,
trunking_enabled: bool,
debug_tap: Option<DebugTap>,
federation_tx: Option<tokio::sync::mpsc::Sender<FederationMediaOut>>,
federation_room_hash: Option<[u8; 8]>,
) {
if trunking_enabled {
run_participant_trunked(
@@ -255,7 +448,7 @@ pub async fn run_participant(
.await;
} else {
run_participant_plain(
room_mgr, room_name, participant_id, transport, metrics, session_id,
room_mgr, room_name, participant_id, transport, metrics, session_id, debug_tap, federation_tx, federation_room_hash,
)
.await;
}
@@ -269,54 +462,145 @@ async fn run_participant_plain(
transport: Arc<wzp_transport::QuinnTransport>,
metrics: Arc<RelayMetrics>,
session_id: &str,
debug_tap: Option<DebugTap>,
federation_tx: Option<tokio::sync::mpsc::Sender<FederationMediaOut>>,
federation_room_hash: Option<[u8; 8]>,
) {
let addr = transport.connection().remote_address();
let mut packets_forwarded = 0u64;
let mut last_recv_instant = std::time::Instant::now();
let mut max_recv_gap_ms = 0u64;
let mut max_forward_ms = 0u64;
let mut send_errors = 0u64;
let mut last_log_instant = std::time::Instant::now();
info!(
room = %room_name,
participant = participant_id,
%addr,
session = session_id,
"forwarding loop started (plain)"
);
loop {
let recv_start = std::time::Instant::now();
let pkt = match transport.recv_media().await {
Ok(Some(pkt)) => pkt,
Ok(None) => {
info!(%addr, participant = participant_id, "disconnected");
info!(%addr, participant = participant_id, forwarded = packets_forwarded, "disconnected (stream ended)");
break;
}
Err(e) => {
let msg = e.to_string();
if msg.contains("timed out") || msg.contains("reset") || msg.contains("closed") {
info!(%addr, participant = participant_id, "connection closed: {e}");
info!(%addr, participant = participant_id, forwarded = packets_forwarded, "connection closed: {e}");
} else {
error!(%addr, participant = participant_id, "recv error: {e}");
error!(%addr, participant = participant_id, forwarded = packets_forwarded, "recv error: {e}");
}
break;
}
};
let recv_gap_ms = last_recv_instant.elapsed().as_millis() as u64;
last_recv_instant = std::time::Instant::now();
if recv_gap_ms > max_recv_gap_ms {
max_recv_gap_ms = recv_gap_ms;
}
// Log if recv gap is suspiciously large (>200ms = missed ~10 packets)
if recv_gap_ms > 200 {
warn!(
room = %room_name,
participant = participant_id,
recv_gap_ms,
seq = pkt.header.seq,
"large recv gap"
);
}
// Update per-session quality metrics if a quality report is present
if let Some(ref report) = pkt.quality_report {
metrics.update_session_quality(session_id, report);
}
// Get current list of other participants
let lock_start = std::time::Instant::now();
let others = {
let mgr = room_mgr.lock().await;
mgr.others(&room_name, participant_id)
};
let lock_ms = lock_start.elapsed().as_millis() as u64;
if lock_ms > 10 {
warn!(
room = %room_name,
participant = participant_id,
lock_ms,
"slow room_mgr lock"
);
}
// Debug tap: log packet metadata
if let Some(ref tap) = debug_tap {
if tap.matches(&room_name) {
tap.log_packet(&room_name, "in", &addr, &pkt, others.len());
}
}
// Forward to all others
let fwd_start = std::time::Instant::now();
let pkt_bytes = pkt.payload.len() as u64;
for other in &others {
// Best-effort: if one send fails, continue to others
if let Err(e) = other.send_media(&pkt).await {
// Don't log every failure — they'll be cleaned up when their recv loop breaks
let _ = e;
match other {
ParticipantSender::Quic(t) => {
if let Err(e) = t.send_media(&pkt).await {
send_errors += 1;
if send_errors <= 5 || send_errors % 100 == 0 {
warn!(
room = %room_name,
participant = participant_id,
peer = %t.connection().remote_address(),
total_send_errors = send_errors,
"send_media error: {e}"
);
}
}
}
ParticipantSender::WebSocket(_) => {
let _ = other.send_raw(&pkt.payload).await;
}
}
}
// Federation: forward to active peer relays via channel
if let Some(ref fed_tx) = federation_tx {
let data = pkt.to_bytes();
let _ = fed_tx.try_send(FederationMediaOut {
room_name: room_name.clone(),
room_hash: federation_room_hash.unwrap_or_else(|| crate::federation::room_hash(&room_name)),
data,
});
}
let fwd_ms = fwd_start.elapsed().as_millis() as u64;
if fwd_ms > max_forward_ms {
max_forward_ms = fwd_ms;
}
if fwd_ms > 50 {
warn!(
room = %room_name,
participant = participant_id,
fwd_ms,
fan_out = others.len(),
"slow forward"
);
}
let fan_out = others.len() as u64;
metrics.packets_forwarded.inc_by(fan_out);
metrics.bytes_forwarded.inc_by(pkt_bytes * fan_out);
packets_forwarded += 1;
if packets_forwarded % 500 == 0 {
// Periodic stats log every 5 seconds
if last_log_instant.elapsed() >= Duration::from_secs(5) {
let room_size = {
let mgr = room_mgr.lock().await;
mgr.room_size(&room_name)
@@ -326,14 +610,24 @@ async fn run_participant_plain(
participant = participant_id,
forwarded = packets_forwarded,
room_size,
fan_out,
max_recv_gap_ms,
max_forward_ms,
send_errors,
"participant stats"
);
max_recv_gap_ms = 0;
max_forward_ms = 0;
last_log_instant = std::time::Instant::now();
}
}
// Clean up
// Clean up — leave room and broadcast update to remaining participants
let mut mgr = room_mgr.lock().await;
mgr.leave(&room_name, participant_id);
if let Some((update, senders)) = mgr.leave(&room_name, participant_id) {
drop(mgr); // release lock before async broadcast
broadcast_signal(&senders, &update).await;
}
}
/// Trunked forwarding loop — batches outgoing packets per peer.
@@ -349,6 +643,19 @@ async fn run_participant_trunked(
let addr = transport.connection().remote_address();
let mut packets_forwarded = 0u64;
let mut last_recv_instant = std::time::Instant::now();
let mut max_recv_gap_ms = 0u64;
let mut max_forward_ms = 0u64;
let mut send_errors = 0u64;
let mut last_log_instant = std::time::Instant::now();
info!(
room = %room_name,
participant = participant_id,
%addr,
session = session_id,
"forwarding loop started (trunked)"
);
// Per-peer TrunkedForwarders, keyed by the raw pointer of the peer
// transport (stable for the Arc's lifetime). We use the remote address
@@ -370,40 +677,97 @@ async fn run_participant_trunked(
let pkt = match result {
Ok(Some(pkt)) => pkt,
Ok(None) => {
info!(%addr, participant = participant_id, "disconnected");
info!(%addr, participant = participant_id, forwarded = packets_forwarded, "disconnected (stream ended)");
break;
}
Err(e) => {
error!(%addr, participant = participant_id, "recv error: {e}");
error!(%addr, participant = participant_id, forwarded = packets_forwarded, "recv error: {e}");
break;
}
};
let recv_gap_ms = last_recv_instant.elapsed().as_millis() as u64;
last_recv_instant = std::time::Instant::now();
if recv_gap_ms > max_recv_gap_ms {
max_recv_gap_ms = recv_gap_ms;
}
if recv_gap_ms > 200 {
warn!(
room = %room_name,
participant = participant_id,
recv_gap_ms,
seq = pkt.header.seq,
"large recv gap (trunked)"
);
}
if let Some(ref report) = pkt.quality_report {
metrics.update_session_quality(session_id, report);
}
let lock_start = std::time::Instant::now();
let others = {
let mgr = room_mgr.lock().await;
mgr.others(&room_name, participant_id)
};
let lock_ms = lock_start.elapsed().as_millis() as u64;
if lock_ms > 10 {
warn!(
room = %room_name,
participant = participant_id,
lock_ms,
"slow room_mgr lock (trunked)"
);
}
let fwd_start = std::time::Instant::now();
let pkt_bytes = pkt.payload.len() as u64;
for other in &others {
let peer_addr = other.connection().remote_address();
let fwd = forwarders
.entry(peer_addr)
.or_insert_with(|| TrunkedForwarder::new(other.clone(), sid_bytes));
if let Err(e) = fwd.send(&pkt).await {
let _ = e;
match other {
ParticipantSender::Quic(t) => {
let peer_addr = t.connection().remote_address();
let fwd = forwarders
.entry(peer_addr)
.or_insert_with(|| TrunkedForwarder::new(t.clone(), sid_bytes));
if let Err(e) = fwd.send(&pkt).await {
send_errors += 1;
if send_errors <= 5 || send_errors % 100 == 0 {
warn!(
room = %room_name,
participant = participant_id,
peer = %peer_addr,
total_send_errors = send_errors,
"trunked send error: {e}"
);
}
}
}
ParticipantSender::WebSocket(_) => {
let _ = other.send_raw(&pkt.payload).await;
}
}
}
let fwd_ms = fwd_start.elapsed().as_millis() as u64;
if fwd_ms > max_forward_ms {
max_forward_ms = fwd_ms;
}
if fwd_ms > 50 {
warn!(
room = %room_name,
participant = participant_id,
fwd_ms,
fan_out = others.len(),
"slow forward (trunked)"
);
}
let fan_out = others.len() as u64;
metrics.packets_forwarded.inc_by(fan_out);
metrics.bytes_forwarded.inc_by(pkt_bytes * fan_out);
packets_forwarded += 1;
if packets_forwarded % 500 == 0 {
// Periodic stats every 5 seconds
if last_log_instant.elapsed() >= Duration::from_secs(5) {
let room_size = {
let mgr = room_mgr.lock().await;
mgr.room_size(&room_name)
@@ -413,15 +777,30 @@ async fn run_participant_trunked(
participant = participant_id,
forwarded = packets_forwarded,
room_size,
fan_out,
max_recv_gap_ms,
max_forward_ms,
send_errors,
"participant stats (trunked)"
);
max_recv_gap_ms = 0;
max_forward_ms = 0;
last_log_instant = std::time::Instant::now();
}
}
_ = flush_interval.tick() => {
for fwd in forwarders.values_mut() {
if let Err(e) = fwd.flush().await {
let _ = e;
send_errors += 1;
if send_errors <= 5 || send_errors % 100 == 0 {
warn!(
room = %room_name,
participant = participant_id,
total_send_errors = send_errors,
"trunk flush error: {e}"
);
}
}
}
}
@@ -434,7 +813,10 @@ async fn run_participant_trunked(
}
let mut mgr = room_mgr.lock().await;
mgr.leave(&room_name, participant_id);
if let Some((update, senders)) = mgr.leave(&room_name, participant_id) {
drop(mgr);
broadcast_signal(&senders, &update).await;
}
}
/// Parse up to the first 2 bytes of a hex session-id string into `[u8; 2]`.

265
crates/wzp-relay/src/route.rs Normal file
View File

@@ -0,0 +1,265 @@
//! Route resolution — given a target fingerprint, find the relay chain
//! needed to reach that user.
//!
//! Uses the [`PresenceRegistry`] as its data source. Currently supports
//! single-hop resolution (local or direct peer). The `resolve_multi_hop`
//! method has the signature for future multi-hop expansion but falls back
//! to single-hop for now.
use std::net::SocketAddr;
use serde::Serialize;
use crate::presence::{PresenceLocation, PresenceRegistry};
// ---------------------------------------------------------------------------
// Route type
// ---------------------------------------------------------------------------
/// The resolved route to a target fingerprint.
#[derive(Clone, Debug, PartialEq, Eq, Serialize)]
pub enum Route {
/// Target is connected to this relay directly.
Local,
/// Target is on a directly connected peer relay.
DirectPeer(SocketAddr),
/// Target is reachable via a chain of relays (multi-hop).
Chain(Vec<SocketAddr>),
/// Target not found in any known relay.
NotFound,
}
impl std::fmt::Display for Route {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
match self {
Route::Local => write!(f, "local"),
Route::DirectPeer(addr) => write!(f, "direct_peer({})", addr),
Route::Chain(chain) => {
let addrs: Vec<String> = chain.iter().map(|a| a.to_string()).collect();
write!(f, "chain({})", addrs.join(" -> "))
}
Route::NotFound => write!(f, "not_found"),
}
}
}
// ---------------------------------------------------------------------------
// RouteResolver
// ---------------------------------------------------------------------------
/// Resolves fingerprints to relay routes using the presence registry.
pub struct RouteResolver {
/// Our own relay address (how peers know us).
local_addr: SocketAddr,
}
impl RouteResolver {
/// Create a new route resolver for the relay at `local_addr`.
pub fn new(local_addr: SocketAddr) -> Self {
Self { local_addr }
}
/// Our local relay address.
pub fn local_addr(&self) -> SocketAddr {
self.local_addr
}
/// Look up a fingerprint in the registry and return the route.
///
/// - If `registry.lookup()` returns `Local` -> `Route::Local`
/// - If returns `Remote(addr)` -> `Route::DirectPeer(addr)`
/// - If not found -> `Route::NotFound`
pub fn resolve(&self, registry: &PresenceRegistry, target_fingerprint: &str) -> Route {
match registry.lookup(target_fingerprint) {
Some(PresenceLocation::Local) => Route::Local,
Some(PresenceLocation::Remote(addr)) => Route::DirectPeer(addr),
None => Route::NotFound,
}
}
/// Multi-hop route resolution (future expansion).
///
/// For now this is equivalent to `resolve()` — single-hop only.
/// When multi-hop is implemented, this will query peers transitively
/// up to `max_hops` relays deep, using `RouteQuery` / `RouteResponse`
/// signals over probe connections.
pub fn resolve_multi_hop(
&self,
registry: &PresenceRegistry,
target: &str,
_max_hops: usize,
) -> Route {
// Phase 1: single-hop only (same as resolve).
// Future: if resolve returns NotFound and max_hops > 0,
// send RouteQuery to each known peer with ttl = max_hops - 1,
// collect RouteResponse, and build a Chain.
self.resolve(registry, target)
}
/// Build a JSON-serializable route response for the HTTP API.
pub fn route_json(
&self,
fingerprint: &str,
route: &Route,
) -> serde_json::Value {
let (route_type, relay_chain) = match route {
Route::Local => ("local", vec![self.local_addr.to_string()]),
Route::DirectPeer(addr) => ("direct_peer", vec![self.local_addr.to_string(), addr.to_string()]),
Route::Chain(chain) => {
let mut addrs = vec![self.local_addr.to_string()];
addrs.extend(chain.iter().map(|a| a.to_string()));
("chain", addrs)
}
Route::NotFound => ("not_found", vec![]),
};
serde_json::json!({
"fingerprint": fingerprint,
"route": route_type,
"relay_chain": relay_chain,
})
}
}
// ---------------------------------------------------------------------------
// Tests
// ---------------------------------------------------------------------------
#[cfg(test)]
mod tests {
use super::*;
use std::collections::HashSet;
use std::net::SocketAddr;
fn addr(s: &str) -> SocketAddr {
s.parse().unwrap()
}
fn make_resolver() -> RouteResolver {
RouteResolver::new(addr("10.0.0.1:4433"))
}
#[test]
fn resolve_local() {
let resolver = make_resolver();
let mut reg = PresenceRegistry::new();
reg.register_local("aabbccdd", Some("alice".into()), Some("room1".into()));
let route = resolver.resolve(&reg, "aabbccdd");
assert_eq!(route, Route::Local);
}
#[test]
fn resolve_direct_peer() {
let resolver = make_resolver();
let mut reg = PresenceRegistry::new();
let peer = addr("10.0.0.2:4433");
let mut fps = HashSet::new();
fps.insert("deadbeef".to_string());
reg.update_peer(peer, fps);
let route = resolver.resolve(&reg, "deadbeef");
assert_eq!(route, Route::DirectPeer(peer));
}
#[test]
fn resolve_not_found() {
let resolver = make_resolver();
let reg = PresenceRegistry::new();
let route = resolver.resolve(&reg, "unknown_fp");
assert_eq!(route, Route::NotFound);
}
#[test]
fn resolve_multi_hop_fallback() {
// multi-hop currently falls back to single-hop behavior
let resolver = make_resolver();
let mut reg = PresenceRegistry::new();
reg.register_local("local_fp", None, None);
let peer = addr("10.0.0.3:4433");
let mut fps = HashSet::new();
fps.insert("remote_fp".to_string());
reg.update_peer(peer, fps);
// Local lookup works via multi-hop
assert_eq!(resolver.resolve_multi_hop(&reg, "local_fp", 3), Route::Local);
// Remote lookup works via multi-hop
assert_eq!(
resolver.resolve_multi_hop(&reg, "remote_fp", 3),
Route::DirectPeer(peer)
);
// Not-found works via multi-hop
assert_eq!(
resolver.resolve_multi_hop(&reg, "nobody", 3),
Route::NotFound
);
}
#[test]
fn route_query_signal_roundtrip() {
use wzp_proto::SignalMessage;
let query = SignalMessage::RouteQuery {
fingerprint: "aabbccdd".to_string(),
ttl: 3,
};
let json = serde_json::to_string(&query).unwrap();
let decoded: SignalMessage = serde_json::from_str(&json).unwrap();
assert!(matches!(
decoded,
SignalMessage::RouteQuery { ref fingerprint, ttl }
if fingerprint == "aabbccdd" && ttl == 3
));
let response = SignalMessage::RouteResponse {
fingerprint: "aabbccdd".to_string(),
found: true,
relay_chain: vec!["10.0.0.1:4433".to_string(), "10.0.0.2:4433".to_string()],
};
let json = serde_json::to_string(&response).unwrap();
let decoded: SignalMessage = serde_json::from_str(&json).unwrap();
assert!(matches!(
decoded,
SignalMessage::RouteResponse { ref fingerprint, found, ref relay_chain }
if fingerprint == "aabbccdd" && found && relay_chain.len() == 2
));
}
#[test]
fn route_display() {
assert_eq!(Route::Local.to_string(), "local");
assert_eq!(
Route::DirectPeer(addr("10.0.0.2:4433")).to_string(),
"direct_peer(10.0.0.2:4433)"
);
assert_eq!(
Route::Chain(vec![addr("10.0.0.2:4433"), addr("10.0.0.3:4433")]).to_string(),
"chain(10.0.0.2:4433 -> 10.0.0.3:4433)"
);
assert_eq!(Route::NotFound.to_string(), "not_found");
// Debug is also useful
let debug = format!("{:?}", Route::Local);
assert!(debug.contains("Local"));
}
#[test]
fn route_json_output() {
let resolver = make_resolver();
let json = resolver.route_json("fp1", &Route::Local);
assert_eq!(json["route"], "local");
assert_eq!(json["fingerprint"], "fp1");
assert_eq!(json["relay_chain"].as_array().unwrap().len(), 1);
let json = resolver.route_json("fp2", &Route::DirectPeer(addr("10.0.0.2:4433")));
assert_eq!(json["route"], "direct_peer");
assert_eq!(json["relay_chain"].as_array().unwrap().len(), 2);
let json = resolver.route_json("fp3", &Route::NotFound);
assert_eq!(json["route"], "not_found");
assert_eq!(json["relay_chain"].as_array().unwrap().len(), 0);
}
}

105
crates/wzp-relay/src/signal_hub.rs Normal file
View File

@@ -0,0 +1,105 @@
//! Persistent signaling connection manager.
//!
//! Tracks clients connected via `_signal` SNI. Routes call signals
//! (DirectCallOffer, DirectCallAnswer, Hangup) between registered users.
use std::collections::HashMap;
use std::sync::Arc;
use std::time::Instant;
use tracing::{info, warn};
use wzp_proto::{MediaTransport, SignalMessage};
use wzp_transport::QuinnTransport;
/// A client connected via `_signal` for direct calling.
pub struct SignalClient {
pub fingerprint: String,
pub alias: Option<String>,
pub transport: Arc<QuinnTransport>,
pub connected_at: Instant,
}
/// Manages persistent signaling connections.
pub struct SignalHub {
clients: HashMap<String, SignalClient>,
}
impl SignalHub {
pub fn new() -> Self {
Self {
clients: HashMap::new(),
}
}
/// Register a new signaling client.
pub fn register(&mut self, fp: String, transport: Arc<QuinnTransport>, alias: Option<String>) {
info!(fingerprint = %fp, alias = ?alias, "signal client registered");
self.clients.insert(fp.clone(), SignalClient {
fingerprint: fp,
alias,
transport,
connected_at: Instant::now(),
});
}
/// Unregister a signaling client. Returns the client if found.
pub fn unregister(&mut self, fp: &str) -> Option<SignalClient> {
let client = self.clients.remove(fp);
if client.is_some() {
info!(fingerprint = %fp, "signal client unregistered");
}
client
}
/// Look up a client by fingerprint.
pub fn get(&self, fp: &str) -> Option<&SignalClient> {
self.clients.get(fp)
}
/// Check if a fingerprint is online.
pub fn is_online(&self, fp: &str) -> bool {
self.clients.contains_key(fp)
}
/// Send a signal message to a client by fingerprint.
pub async fn send_to(&self, fp: &str, msg: &SignalMessage) -> Result<(), String> {
match self.clients.get(fp) {
Some(client) => {
client.transport.send_signal(msg).await
.map_err(|e| format!("send to {fp}: {e}"))
}
None => Err(format!("{fp} not online")),
}
}
/// Number of connected signaling clients.
pub fn online_count(&self) -> usize {
self.clients.len()
}
/// List all online fingerprints.
pub fn online_fingerprints(&self) -> Vec<&str> {
self.clients.keys().map(|s| s.as_str()).collect()
}
/// Get alias for a fingerprint.
pub fn alias(&self, fp: &str) -> Option<&str> {
self.clients.get(fp).and_then(|c| c.alias.as_deref())
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn register_unregister() {
let mut hub = SignalHub::new();
assert_eq!(hub.online_count(), 0);
assert!(!hub.is_online("alice"));
// Can't easily construct QuinnTransport in a unit test,
// so we just test the HashMap logic conceptually.
// Integration tests cover the full flow.
}
}

243
crates/wzp-relay/src/ws.rs Normal file
View File

@@ -0,0 +1,243 @@
//! WebSocket transport for browser clients.
//!
//! Browsers connect via `GET /ws/{room}` → WebSocket upgrade.
//! First message must be auth JSON (if auth is enabled).
//! Subsequent messages are binary PCM frames forwarded to/from the room.
use std::net::SocketAddr;
use std::sync::Arc;
use axum::{
extract::{
ws::{Message, WebSocket},
Path, State, WebSocketUpgrade,
},
response::IntoResponse,
routing::get,
Router,
};
use bytes::Bytes;
use futures_util::{SinkExt, StreamExt};
use tokio::sync::{mpsc, Mutex};
use tower_http::services::ServeDir;
use tracing::{error, info, warn};
use crate::auth;
use crate::metrics::RelayMetrics;
use crate::presence::PresenceRegistry;
use crate::room::RoomManager;
use crate::session_mgr::SessionManager;
/// Shared state for WebSocket handlers.
#[derive(Clone)]
pub struct WsState {
pub room_mgr: Arc<Mutex<RoomManager>>,
pub session_mgr: Arc<Mutex<SessionManager>>,
pub auth_url: Option<String>,
pub metrics: Arc<RelayMetrics>,
pub presence: Arc<Mutex<PresenceRegistry>>,
}
/// Start the WebSocket + static file server.
pub async fn run_ws_server(port: u16, state: WsState, static_dir: Option<String>) {
let mut app = Router::new()
.route("/ws/{room}", get(ws_upgrade_handler))
.with_state(state);
if let Some(dir) = static_dir {
info!(dir = %dir, "serving static files");
app = app.fallback_service(ServeDir::new(dir));
}
let addr: SocketAddr = ([0, 0, 0, 0], port).into();
info!(%addr, "WebSocket server listening");
let listener = tokio::net::TcpListener::bind(addr)
.await
.expect("failed to bind WS listener");
axum::serve(listener, app).await.expect("WS server failed");
}
async fn ws_upgrade_handler(
Path(room): Path<String>,
State(state): State<WsState>,
ws: WebSocketUpgrade,
) -> impl IntoResponse {
ws.on_upgrade(move |socket| handle_ws_connection(socket, room, state))
}
async fn handle_ws_connection(socket: WebSocket, room: String, state: WsState) {
let (mut ws_tx, mut ws_rx) = socket.split();
// 1. Auth: if auth_url is set, first message must be {"type":"auth","token":"..."}
let fingerprint: Option<String> = if let Some(ref auth_url) = state.auth_url {
match ws_rx.next().await {
Some(Ok(Message::Text(text))) => {
match serde_json::from_str::<serde_json::Value>(&text) {
Ok(parsed) if parsed["type"] == "auth" => {
if let Some(token) = parsed["token"].as_str() {
match auth::validate_token(auth_url, token).await {
Ok(client) => {
state.metrics.auth_attempts.with_label_values(&["ok"]).inc();
info!(fingerprint = %client.fingerprint, "WS authenticated");
let _ = ws_tx
.send(Message::Text(r#"{"type":"auth_ok"}"#.into()))
.await;
Some(client.fingerprint)
}
Err(e) => {
state
.metrics
.auth_attempts
.with_label_values(&["fail"])
.inc();
let _ = ws_tx
.send(Message::Text(
format!(r#"{{"type":"auth_error","error":"{e}"}}"#)
.into(),
))
.await;
warn!("WS auth failed: {e}");
return;
}
}
} else {
warn!("WS auth: missing token field");
return;
}
}
_ => {
warn!("WS: expected auth message as first frame");
return;
}
}
}
_ => {
warn!("WS: connection closed before auth");
return;
}
}
} else {
let _ = ws_tx
.send(Message::Text(r#"{"type":"auth_ok"}"#.into()))
.await;
None
};
// 2. Create mpsc channel for outbound frames (room → browser)
let (tx, mut rx) = mpsc::channel::<Bytes>(64);
// 3. Create session
let session_id = {
let mut smgr = state.session_mgr.lock().await;
match smgr.create_session(&room, fingerprint.clone()) {
Ok(id) => id,
Err(e) => {
error!(room = %room, "WS session rejected: {e}");
return;
}
}
};
state.metrics.active_sessions.inc();
// 4. Join room with WS sender
let addr: SocketAddr = ([0, 0, 0, 0], 0).into();
let participant_id = {
let mut mgr = state.room_mgr.lock().await;
match mgr.join_ws(&room, addr, tx, fingerprint.as_deref()) {
Ok(id) => {
state.metrics.active_rooms.set(mgr.list().len() as i64);
id
}
Err(e) => {
error!(room = %room, "WS room join denied: {e}");
state.metrics.active_sessions.dec();
let mut smgr = state.session_mgr.lock().await;
smgr.remove_session(session_id);
return;
}
}
};
// 5. Register presence
if let Some(ref fp) = fingerprint {
let mut reg = state.presence.lock().await;
reg.register_local(fp, None, Some(room.clone()));
}
info!(room = %room, participant = participant_id, "WS client joined");
// 6. Outbound task: mpsc rx → WS binary frames
let send_task = tokio::spawn(async move {
while let Some(data) = rx.recv().await {
if ws_tx
.send(Message::Binary(data.to_vec().into()))
.await
.is_err()
{
break;
}
}
});
// 7. Inbound: WS recv → fan-out to room
loop {
match ws_rx.next().await {
Some(Ok(Message::Binary(data))) => {
let others = {
let mgr = state.room_mgr.lock().await;
mgr.others(&room, participant_id)
};
for other in &others {
let _ = other.send_raw(&data).await;
}
state
.metrics
.packets_forwarded
.inc_by(others.len() as u64);
state
.metrics
.bytes_forwarded
.inc_by(data.len() as u64 * others.len() as u64);
}
Some(Ok(Message::Close(_))) | None => break,
_ => continue,
}
}
// 8. Cleanup
send_task.abort();
info!(room = %room, participant = participant_id, "WS client disconnected");
if let Some(ref fp) = fingerprint {
let mut reg = state.presence.lock().await;
reg.unregister_local(fp);
}
{
let mut mgr = state.room_mgr.lock().await;
mgr.leave(&room, participant_id);
state.metrics.active_rooms.set(mgr.list().len() as i64);
}
let session_id_str: String = session_id.iter().map(|b| format!("{b:02x}")).collect();
state.metrics.remove_session_metrics(&session_id_str);
state.metrics.active_sessions.dec();
{
let mut smgr = state.session_mgr.lock().await;
smgr.remove_session(session_id);
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn ws_state_is_clone() {
// WsState must be Clone for axum's State extractor
fn assert_clone<T: Clone>() {}
assert_clone::<WsState>();
}
}

3
crates/wzp-transport/Cargo.toml
View File

@@ -16,6 +16,9 @@ async-trait = { workspace = true }
serde_json = "1"
rustls = { version = "0.23", default-features = false, features = ["ring", "std"] }
rcgen = "0.13"
ed25519-dalek = { workspace = true }
hkdf = { workspace = true }
sha2 = { workspace = true }
[dev-dependencies]
tokio = { workspace = true, features = ["rt-multi-thread", "macros"] }

66
crates/wzp-transport/src/config.rs
View File

@@ -6,20 +6,74 @@ use std::time::Duration;
use quinn::crypto::rustls::QuicClientConfig;
use quinn::crypto::rustls::QuicServerConfig;
/// Create a server configuration with a self-signed certificate (for testing).
/// Create a server configuration with a self-signed certificate (random keypair).
///
/// Tunes QUIC transport parameters for lossy VoIP:
/// - 30s idle timeout
/// - 5s keep-alive interval
/// - DATAGRAM extension enabled
/// - Conservative flow control for bandwidth-constrained links
/// The certificate changes on every call. Use `server_config_from_seed` for
/// a deterministic certificate that survives relay restarts.
pub fn server_config() -> (quinn::ServerConfig, Vec<u8>) {
let cert_key = rcgen::generate_simple_self_signed(vec!["localhost".to_string()])
.expect("failed to generate self-signed cert");
let cert_der = rustls::pki_types::CertificateDer::from(cert_key.cert);
let key_der =
rustls::pki_types::PrivateKeyDer::try_from(cert_key.key_pair.serialize_der()).unwrap();
build_server_config(cert_der, key_der)
}
/// Create a server configuration with a deterministic self-signed certificate
/// derived from a 32-byte seed. Same seed = same cert = same TLS fingerprint.
pub fn server_config_from_seed(seed: &[u8; 32]) -> (quinn::ServerConfig, Vec<u8>) {
use ed25519_dalek::pkcs8::EncodePrivateKey;
use ed25519_dalek::SigningKey;
use hkdf::Hkdf;
use sha2::Sha256;
// Derive Ed25519 key bytes from seed via HKDF
let hk = Hkdf::<Sha256>::new(None, seed);
let mut ed_bytes = [0u8; 32];
hk.expand(b"wzp-tls-ed25519", &mut ed_bytes)
.expect("HKDF expand failed");
// Create Ed25519 signing key and export as PKCS8 DER
let signing_key = SigningKey::from_bytes(&ed_bytes);
let pkcs8_doc = signing_key.to_pkcs8_der()
.expect("failed to encode Ed25519 key as PKCS8");
let key_der_for_rcgen = rustls::pki_types::PrivateKeyDer::try_from(pkcs8_doc.as_bytes().to_vec())
.expect("failed to wrap PKCS8 DER");
// Create rcgen KeyPair from DER
let key_pair = rcgen::KeyPair::from_der_and_sign_algo(
&key_der_for_rcgen,
&rcgen::PKCS_ED25519,
)
.expect("failed to create KeyPair from seed-derived Ed25519 key");
// Build self-signed cert with this deterministic keypair
let params = rcgen::CertificateParams::new(vec!["localhost".to_string()])
.expect("failed to create CertificateParams");
let cert = params.self_signed(&key_pair).expect("failed to self-sign cert");
let cert_der = rustls::pki_types::CertificateDer::from(cert.der().to_vec());
let key_der = rustls::pki_types::PrivateKeyDer::try_from(key_pair.serialize_der())
.expect("failed to serialize key DER");
build_server_config(cert_der, key_der)
}
/// Compute a hex-formatted SHA-256 fingerprint of a DER-encoded certificate.
///
/// Format: `xx:xx:xx:xx:...` (32 bytes = 64 hex chars with colons).
pub fn tls_fingerprint(cert_der: &[u8]) -> String {
use sha2::{Sha256, Digest};
let hash = Sha256::digest(cert_der);
hash.iter()
.map(|b| format!("{b:02x}"))
.collect::<Vec<_>>()
.join(":")
}
fn build_server_config(
cert_der: rustls::pki_types::CertificateDer<'static>,
key_der: rustls::pki_types::PrivateKeyDer<'static>,
) -> (quinn::ServerConfig, Vec<u8>) {
let mut server_crypto = rustls::ServerConfig::builder()
.with_no_client_auth()
.with_single_cert(vec![cert_der.clone()], key_der)

2
crates/wzp-transport/src/lib.rs
View File

@@ -22,7 +22,7 @@ pub mod path_monitor;
pub mod quic;
pub mod reliable;
pub use config::{client_config, server_config};
pub use config::{client_config, server_config, server_config_from_seed, tls_fingerprint};
pub use connection::{accept, connect, create_endpoint};
pub use path_monitor::PathMonitor;
pub use quic::QuinnTransport;

26
crates/wzp-transport/src/path_monitor.rs
View File

@@ -136,6 +136,11 @@ impl PathMonitor {
}
}
/// Get raw packet counts for debugging.
pub fn counts(&self) -> (u64, u64) {
(self.total_sent, self.total_received)
}
/// Estimate bandwidth in kbps from bytes received over time.
fn estimate_bandwidth_kbps(&self) -> u32 {
if let (Some(first), Some(last)) = (self.first_recv_time_ms, self.last_recv_time_ms) {
@@ -149,6 +154,27 @@ impl PathMonitor {
}
0
}
/// Detect whether a network handoff likely occurred.
///
/// Returns `true` if the most recent RTT jitter measurement exceeds 3x
/// the EWMA-smoothed jitter average, which is characteristic of a cellular
/// network handoff (tower switch, WiFi-to-cellular transition, etc.).
pub fn detect_handoff(&self) -> bool {
// We need at least two RTT observations to have a meaningful jitter value,
// and the EWMA must be non-zero to avoid division/multiplication by zero.
if self.jitter_ewma <= 0.0 {
return false;
}
if let (Some(last_rtt), Some(_)) = (self.last_rtt_ms, Some(self.rtt_ewma)) {
// Compute the most recent instantaneous jitter (RTT deviation from EWMA)
let instant_jitter = (last_rtt - self.rtt_ewma).abs();
instant_jitter > self.jitter_ewma * 3.0
} else {
false
}
}
}
impl Default for PathMonitor {

31
crates/wzp-transport/src/quic.rs
View File

@@ -33,6 +33,29 @@ impl QuinnTransport {
&self.connection
}
/// Send raw bytes as a QUIC datagram (no MediaPacket framing).
pub fn send_raw_datagram(&self, data: &[u8]) -> Result<(), TransportError> {
self.connection
.send_datagram(bytes::Bytes::copy_from_slice(data))
.map_err(|e| TransportError::Internal(format!("datagram: {e}")))
}
/// Close the QUIC connection immediately (synchronous, no async needed).
/// The relay will detect the close and remove this participant from the room.
pub fn close_now(&self) {
self.connection.close(quinn::VarInt::from_u32(0), b"hangup");
}
/// Feed an external RTT observation (e.g. from QUIC path stats) into the path monitor.
pub fn feed_rtt(&self, rtt_ms: u32) {
self.path_monitor.lock().unwrap().observe_rtt(rtt_ms);
}
/// Get raw packet counts from path monitor (sent, received).
pub fn monitor_counts(&self) -> (u64, u64) {
self.path_monitor.lock().unwrap().counts()
}
/// Get the maximum datagram payload size, if datagrams are supported.
pub fn max_datagram_size(&self) -> Option<usize> {
datagram::max_datagram_payload(&self.connection)
@@ -120,7 +143,7 @@ impl MediaTransport for QuinnTransport {
}
};
match datagram::deserialize_media(data) {
match datagram::deserialize_media(data.clone()) {
Some(packet) => {
// Record receive observation
{
@@ -133,8 +156,10 @@ impl MediaTransport for QuinnTransport {
Ok(Some(packet))
}
None => {
tracing::warn!("received malformed media datagram");
Ok(None)
tracing::warn!(len = data.len(), "skipping malformed media datagram, continuing");
// Don't return Ok(None) — that signals connection closed.
// Recurse to read the next datagram instead.
Box::pin(self.recv_media()).await
}
}
}

2
crates/wzp-web/src/main.rs
View File

@@ -272,7 +272,7 @@ async fn handle_ws(socket: WebSocket, room: String, state: AppState) {
// Crypto handshake with relay
let handshake_start = std::time::Instant::now();
let bridge_seed = wzp_crypto::Seed::generate();
match wzp_client::handshake::perform_handshake(&*transport, &bridge_seed.0).await {
match wzp_client::handshake::perform_handshake(&*transport, &bridge_seed.0, None).await {
Ok(_session) => {
let elapsed = handshake_start.elapsed().as_secs_f64();
state.metrics.handshake_latency.observe(elapsed);

115
debug/INCIDENT-2026-04-06-art-gc-sigbus.md Normal file
View File

@@ -0,0 +1,115 @@
# Incident Report: SIGBUS in ART GC During Audio Thread JNI Calls
**Date:** 2026-04-06
**Severity:** High — app crash (SIGBUS) mid-call
**Status:** Root-caused, fix proposed
**Affects:** Android 16 (API 36) devices with concurrent mark-compact GC
## Summary
The app crashes with SIGBUS (signal 7, BUS_ADRERR) during an active call. The crash occurs in ART's garbage collector or JIT compiler, NOT in our Rust native code or AudioRing buffer. Both `wzp-capture` and `wzp-playout` Kotlin threads are affected.
## Crash Details
### Crash 1: wzp-capture (18:42, after 476s of call)
```
Fatal signal 7 (SIGBUS), code 2 (BUS_ADRERR), fault addr 0x720009be38
tid 19697 (wzp-capture), pid 17885 (com.wzp.phone)
```
**Backtrace:**
```
#00 art::StackVisitor::WalkStack
#01 art::Thread::VisitRoots
#02 art::gc::collector::MarkCompact::ThreadFlipVisitor::Run
#03 art::Thread::EnsureFlipFunctionStarted
#04 CheckJNI::ReleasePrimitiveArrayElements ← JNI boundary
#05 android_media_AudioRecord_readInArray ← AudioRecord.read()
#09 com.wzp.audio.AudioPipeline.runCapture
```
**Root cause:** ART's concurrent mark-compact GC (`MarkCompact::ThreadFlipVisitor`) is flipping thread roots while the capture thread is in the middle of a JNI call (`AudioRecord.read()`). The GC's `EnsureFlipFunctionStarted` triggers a stack walk that hits an invalid address.
### Crash 2: wzp-playout (19:17, mid-call)
```
Fatal signal 7 (SIGBUS), code 2 (BUS_ADRERR), fault addr 0x225eb98
tid 32574 (wzp-playout), pid 32479 (com.wzp.phone)
```
**Backtrace:**
```
#00 com.wzp.audio.AudioPipeline.runPlayout ← JIT-compiled code
#01 art_quick_osr_stub ← On-Stack Replacement
#02 art::jit::Jit::MaybeDoOnStackReplacement
#03-#04 art::interpreter::ExecuteSwitchImplCpp
```
**Root cause:** ART's JIT compiler performed On-Stack Replacement (OSR) on the hot playout loop. The OSR stub references a code address (`0x225eb98`) that is no longer valid — likely because the GC moved the compiled code in memory during concurrent compaction.
## Why This Happens
Android 16 introduced a new **concurrent mark-compact GC** (CMC) that moves objects in memory while other threads are running. This is safe for normal Java code because ART uses read barriers. But our audio threads have specific properties that stress this:
1. **`Thread.MAX_PRIORITY`** — audio threads run at the highest priority, starving the GC thread of CPU time. The GC may not complete its thread-flip before the audio thread resumes.
2. **Tight JNI loops** — `runCapture()` and `runPlayout()` loop every 20ms calling `AudioRecord.read()` / `AudioTrack.write()` via JNI. Each JNI transition is a GC safepoint, but the thread spends most of its time in native code where the GC can't flip it.
3. **Long-running JIT-compiled code** — the hot loop gets JIT-compiled and may undergo OSR. If the GC compacts memory while OSR is in progress, the stub can reference stale addresses.
4. **Daemon threads that never exit** — our threads are parked with `Thread.sleep(Long.MAX_VALUE)` after the call ends (to avoid the libcrypto TLS destructor crash). These zombie threads accumulate GC root scan work.
## Evidence This Is Not Our Bug
| Component | Evidence |
|-----------|---------|
| **AudioRing** | Not in any backtrace. All crash frames are in `libart.so` (ART runtime) |
| **Rust native code** | `libwzp_android.so` not in any crash frame |
| **JNI bridge** | Crash happens during `ReleasePrimitiveArrayElements` (ART internal), not during our JNI calls |
| **Timing** | Crashes after 476s and mid-call — not during init or teardown |
## Proposed Fix
### Option A: Disable concurrent GC compaction for audio threads (recommended)
Use `dalvik.vm.gctype` or per-thread GC pinning to prevent the mark-compact collector from moving objects referenced by audio threads.
**Not directly controllable from app code.** But we can reduce GC pressure:
### Option B: Reduce JNI transitions in audio threads
Instead of calling `engine.writeAudio(pcm)` / `engine.readAudio(pcm)` via JNI on every 20ms frame, batch multiple frames or use `DirectByteBuffer` to share memory without JNI array copies.
**Implementation:**
- Allocate a `DirectByteBuffer` in Kotlin, share the pointer with Rust via JNI
- Audio threads write/read directly to the buffer (no JNI call per frame)
- Rust reads/writes from the same memory region
- Reduces JNI transitions from 100/sec to 0/sec per audio direction
### Option C: Use Android's Oboe (AAudio) natively from Rust
Skip the Kotlin AudioRecord/AudioTrack entirely. Use Oboe (which we already have as a dependency in `wzp-android/Cargo.toml`) to create native audio streams directly from Rust. The audio callbacks run in native code with no JNI, no GC interaction, no ART.
This is how the project was originally designed (see `audio_android.rs` with Oboe references) before switching to Kotlin AudioRecord for simplicity.
**Pros:** Eliminates the entire JNI audio path. No GC interaction. Lower latency.
**Cons:** Requires rewriting `AudioPipeline.kt` into Rust. Oboe setup is more complex.
### Option D: Pin audio thread objects to prevent GC movement
Use JNI `GetPrimitiveArrayCritical` instead of `GetShortArrayRegion` to pin the array in memory during the operation. This prevents the GC from moving the array while we're using it.
**Implementation:** Change `nativeWriteAudio` / `nativeReadAudio` JNI functions to use critical sections.
### Recommendation
**Short term: Option B** (DirectByteBuffer) — reduces JNI transitions without major refactoring.
**Long term: Option C** (Oboe from Rust) — eliminates the problem entirely. This is the architecturally correct solution and matches the original design intent.
## Data Files
- Logcat from Nothing A059 (Android 16, API 36)
- Two crashes in the same session: 18:42 (capture, after 476s) and 19:17 (playout)
- Both SIGBUS/BUS_ADRERR, both in ART internal frames

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