b35a6b7d92
PlayoutCallback::onAudioReady crashed with SIGSEGV(SEGV_ACCERR) on the
first AAudio callback because g_rings was a `const WzpOboeRings*` pointing
at the caller's stack frame. wzp_native_audio_start() constructs the
rings struct as a stack local in Rust, passes &rings to wzp_oboe_start
(which stored the raw pointer), and returns — at which point the stack
frame unwinds and g_rings becomes a dangling reference. The first audio
callback then read from freed memory and died.
- g_rings is now a static WzpOboeRings value (was `const WzpOboeRings*`).
The raw int16 buffer + atomic index pointers inside the struct still
point into the Rust-owned AudioBackend singleton, which is leaked for
the lifetime of the process, so deep-copying the struct by value is
safe and keeps the inner pointers valid forever.
- g_rings_valid atomic bool gates the audio-callback reads: set to true
after the value copy in wzp_oboe_start, cleared in wzp_oboe_stop BEFORE
the streams are torn down so any in-flight callback sees "no backend"
and returns Stop instead of racing on g_rings.
- All g_rings->x accesses in the capture + playout callbacks switched to
g_rings.x (member-of-value).
Reproduced on Pixel 6 / Android 15 with build 0105b0f:
F libc: Fatal signal 11 (SIGSEGV), code 2 (SEGV_ACCERR),
fault addr 0x71aa717eb0 in tid 11822 (AudioTrack)
#00 PlayoutCallback::onAudioReady(oboe::AudioStream*, void*, int)+120
#01 oboe::AudioStream::fireDataCallback(void*, int)+136
...
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