da106bd939
Build8c36fb5logs showed a new regression: Oboe playout cb#0 fires once at startup then the callback STOPS DRAINING the ring entirely. written_samples sticks at 7679 (= RING_CAPACITY - 1) across every recv heartbeat in a 40-second test. Meanwhile the recv task decodes 1800+ real audio frames (sample range up to [-27920..31907], rms 12065) which all get dropped on the floor by audio_write_playout returning 0 because the ring is full. Bisection:96be740(Usage::Media, no setAudioApi, no ContentType, no MainActivity audio mode change) DID drive the playout callback at the expected 50Hz (playout heartbeat: calls=1100 total_played_real=1055040 over 22 seconds). User still heard nothing there because of OS routing, but at least Oboe accepted the PCM.8c36fb5added three changes on top of96be740: 1. Oboe Usage::Media → Usage::VoiceCommunication 2. Oboe setAudioApi(oboe::AudioApi::AAudio) explicit 3. Oboe setContentType(ContentType::Speech) 4. MainActivity setMode(MODE_IN_COMMUNICATION) + setSpeakerphoneOn(true) Every one of those could have killed the callback; combined they did. Revert to 96be740's exact Oboe config: Usage::Media, no setAudioApi, no ContentType. Keep the PCM recorder, heartbeat logging, and stream-open logging. Separately, MainActivity now maxes STREAM_MUSIC (the stream Usage::Media routes to) but leaves audio mode in MODE_NORMAL — no more speakerphone/call-mode combo that makes Oboe unhappy. In NORMAL mode a STREAM_MUSIC stream plays through the loud speaker by default. Proof that the Rust pipeline is perfect: decoded.pcm recorded in8c36fb5was pulled via `adb shell run-as com.wzp.desktop cat .wzp/decoded.pcm`, converted with ffmpeg, and played back on the Mac — user confirmed audible speech. So 100% of the remaining bug surface is Android audio routing, not anything in the Rust/C++ decode path.
WarzonePhone
Custom lossy VoIP protocol built in Rust. E2E encrypted, FEC-protected, adaptive quality, designed for hostile network conditions.
Quick Start
# 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 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 | Full system architecture with diagrams |
| TELEMETRY.md | Prometheus metrics specification |
| INTEGRATION_TASKS.md | featherChat integration tracker |
| WZP-FC-SHARED-CRATES.md | Shared crate strategy |
| 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
./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
cargo test --workspace # 272 tests
License
MIT OR Apache-2.0