03a80a3196
Adds a direct WASAPI microphone capture path for the Windows desktop build that opens the default communications endpoint via IMMDeviceEnumerator -> IAudioClient2 -> SetClientProperties with AudioCategory_Communications, turning on Windows's communications audio processing chain (AEC, noise suppression, automatic gain control). The communications AEC operates at the OS level and uses the system render mix as the reference signal, so echo from our existing CPAL playback stream is cancelled automatically with no per-process reference plumbing. Architecture: - New crates/wzp-client/src/audio_wasapi.rs module (~280 lines). Event-driven capture loop on a dedicated thread; pushes PCM into the same lock-free AudioRing used by the CPAL path. Same public API as audio_io::AudioCapture so downstream code is unchanged. - New `windows-aec` feature in wzp-client that pulls in the `windows` crate (Microsoft's official Rust COM bindings) gated to target_os = "windows" only. Enabling the feature on non-Windows targets is a no-op since both the module and the dep are cfg(target_os = "windows"). - lib.rs re-exports WasapiAudioCapture as AudioCapture when the feature is on, otherwise falls back to the CPAL AudioCapture. AudioPlayback is always the CPAL one — no reason to swap it. - desktop/src-tauri/Cargo.toml Windows target enables the new feature: `features = ["audio", "windows-aec"]`. Implementation notes: - Uses eCommunications role (not eConsole) for GetDefaultAudioEndpoint — the user-configured "communications" device that Teams/Zoom pick up, and the one Windows's AEC is tuned for. - Requests 48 kHz mono i16 with AUDCLNT_STREAMFLAGS_AUTOCONVERTPCM + SRC_DEFAULT_QUALITY so Windows handles any format conversion in the audio engine instead of rejecting our format. - Event-driven with SetEventHandle / WaitForSingleObject — no polling, minimal CPU cost between packets. - 200 ms wait timeout so the capture thread polls `running` often enough for Drop to stop cleanly even if the audio engine stalls (e.g. device unplug). Task #24. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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