New wzp-web crate serves a web page with:
- Browser mic capture via Web Audio API (48kHz mono)
- WebSocket transport for raw PCM audio
- Server-side Opus encode/decode + FEC through wzp relay
- Real-time audio playback in browser
- Level meter and connection stats
Usage:
wzp-relay --listen 0.0.0.0:4433 # start relay
wzp-web --port 8080 --relay 127.0.0.1:4433 # start web bridge
Open http://localhost:8080 in browser
Two browsers connected to the same relay get bridged for a call.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
The --record recv loop was using while-drain which exhausted the jitter
buffer and stopped decoding after the first burst. Now decodes once per
source packet, matching the live mode fix.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- --send-file <file.raw> sends a raw PCM file (48kHz mono s16le) through relay
- Combine with --record: --send-file talk.raw --record echo.raw <relay>
- Fixed all unused import warnings in echo_test.rs
Convert any audio to test format:
ffmpeg -i input.mp3 -ar 48000 -ac 1 -f s16le input.raw
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
New --echo-test <secs> flag sends a 440Hz tone through relay echo,
records the return, and analyzes quality in 5-second windows:
- Per-window: frames sent/received, loss %, SNR (dB), correlation
- Detects quality degradation over time (compares first vs second half)
- Reports jitter buffer stats (depth, lost, late packets)
- Diagnoses jitter buffer drift and packet loss accumulation
Also exposes jitter_stats() on CallDecoder for diagnostics.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
When no --remote is configured, the relay now operates in bridge mode:
- First client connects → echoes while waiting for a peer
- Second client connects → both clients are bridged bidirectionally
- A's packets go to B, B's packets go to A
- Stats logged every 5 seconds (a_to_b / b_to_a packet counts)
- Falls back to echo if only one client connects
This enables the core use case: two clients on different networks
calling each other through a single relay.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Reduced jitter buffer min_depth from 25 (500ms) to 3 (60ms) for fast start
- Fixed live recv loop: decode once per source packet instead of draining
the jitter buffer dry (which advanced seq past future packets)
- Fixed Ok(None) handling: connection closed, not "no packet yet"
Live echo test confirmed working with continuous audio.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- --record now handles Ctrl+C: saves PCM file before exiting
- Relay without --remote runs in echo mode (loops packets back to sender)
instead of sink mode, enabling single-relay audio testing
- recv task returns collected PCM via channel for clean file write
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- cpal is now behind an 'audio' feature flag (off by default)
- --live mode requires --features audio at build time
- --send-tone and --record work on headless servers without audio libs
- Linux build script no longer installs libasound2-dev
Build for headless: cargo build --release
Build with mic/speakers: cargo build --release --features audio
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
CLI modes:
- --send-tone <secs>: send 440Hz test tone (no mic needed)
- --record <file.raw>: save received audio to raw PCM file
- --help: usage info
- Combine: --send-tone 10 --record out.raw
Raw PCM format: 48kHz mono s16le
Play with: ffplay -f s16le -ar 48000 -ac 1 out.raw
Build scripts:
- scripts/build-linux.sh: Hetzner VPS build with auto-cleanup
- scripts/cleanup-builder.sh: kill stale builders
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
The bench tool now auto-calculates the FEC ratio needed to survive
the requested loss percentage, matching how the adaptive quality
controller would behave in production.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
