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feat: Phase 3 — crypto handshake, codec2, benchmarks, audio I/O, relay forwarding

Browse Source 
E2E crypto handshake:
- Client/relay handshake via SignalMessage (CallOffer/CallAnswer)
- X25519 ephemeral key exchange with Ed25519 identity signatures
- Integration tests proving bidirectional encrypt/decrypt

Codec2 integration:
- Pure Rust codec2 crate (v0.3) — no C bindings needed
- MODE_3200 (160 samples/20ms, 8 bytes) and MODE_1200 (320 samples/40ms, 6 bytes)
- 11 new tests including encode/decode roundtrip and adaptive switching

Relay forwarding:
- Bidirectional client → remote forwarding with pipeline processing
- CLI args: --listen, --remote
- Periodic stats logging, clean shutdown via tokio::select!

Benchmark tool (wzp-bench):
- Codec roundtrip, FEC recovery, crypto throughput, full pipeline benchmarks
- Sine wave PCM generator for realistic testing

Audio I/O (cpal):
- AudioCapture (microphone) and AudioPlayback (speakers) at 48kHz mono
- CLI --live mode: mic → encode → send / recv → decode → speakers

120 tests passing, 0 failures.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
Siavash Sameni
2026-03-27 13:43:22 +04:00
parent 43d7f70fe9
commit 79f9ff1596
18 changed files with 2451 additions and 75 deletions
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467
Cargo.lock generated
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]
[[package]]
name = "windows-sys"
version = "0.45.0"
@@ -1711,6 +2154,15 @@ dependencies = [
"memchr",
]
[[package]]
name = "winnow"
version = "1.0.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "a90e88e4667264a994d34e6d1ab2d26d398dcdca8b7f52bec8668957517fc7d8"
dependencies = [
"memchr",
]
[[package]]
name = "wit-bindgen"
version = "0.51.0"
@@ -1724,6 +2176,7 @@ dependencies = [
"anyhow",
"async-trait",
"bytes",
"cpal",
"tokio",
"tracing",
"tracing-subscriber",
@@ -1731,6 +2184,7 @@ dependencies = [
"wzp-crypto",
"wzp-fec",
"wzp-proto",
"wzp-relay",
"wzp-transport",
]
@@ -1739,6 +2193,7 @@ name = "wzp-codec"
version = "0.1.0"
dependencies = [
"audiopus",
"codec2",
"tracing",
"wzp-proto",
]