feat(M2): UDP voice/media plane -- SFU relay, Opus, AEAD, jitter buffer

Adds the full voice pipeline: 14-byte binary frame header, ChaCha20-Poly1305
AEAD keyed from the TLS exporter, libopus encode/decode with FEC/PLC/DTX,
an adaptive per-ssrc jitter buffer, a miniaudio capture/playback engine, an
APM passthrough stub, and the UdpBinding/StreamAnnounce signaling chain
wired through ConnSession/SessionRegistry into a new server-side SFU
(MediaRelay) that decrypts and re-encrypts frames per channel member.

Exit criterion verified: test_m2_voice — two headless clients relay 50
encrypted Opus frames through the server; ctest --preset m1-dev is 9/9
green. Also corrects protocol.md's UdpBinding diagram, which described the
UDP-side binding packet as AEAD-sealed when it is in fact a plaintext
bootstrap frame (separate from the TCP/TLS UdpBinding ack).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
2026-06-16 01:31:14 +02:00
parent 63f457fc54
commit 694494a5be
29 changed files with 2548 additions and 86 deletions

View File

@@ -39,4 +39,32 @@ if(VOICECAT_USE_VCPKG_DEPS)
target_include_directories(test_m1_integration PRIVATE ${VC_TEST_INTERNAL_INCLUDES})
add_test(NAME m1_integration COMMAND test_m1_integration)
set_tests_properties(m1_integration PROPERTIES TIMEOUT 60)
# ── M2 unit tests ──────────────────────────────────────────────────────────
add_executable(test_voice_frame test_voice_frame.cpp)
target_link_libraries(test_voice_frame PRIVATE voicecat::voicecat)
target_compile_features(test_voice_frame PRIVATE cxx_std_20)
target_include_directories(test_voice_frame PRIVATE ${VC_TEST_INTERNAL_INCLUDES})
add_test(NAME voice_frame COMMAND test_voice_frame)
add_executable(test_media_aead test_media_aead.cpp)
target_link_libraries(test_media_aead PRIVATE voicecat::voicecat)
target_compile_features(test_media_aead PRIVATE cxx_std_20)
target_include_directories(test_media_aead PRIVATE ${VC_TEST_INTERNAL_INCLUDES})
add_test(NAME media_aead COMMAND test_media_aead)
add_executable(test_opus_codec test_opus_codec.cpp)
target_link_libraries(test_opus_codec PRIVATE voicecat::voicecat)
target_compile_features(test_opus_codec PRIVATE cxx_std_20)
target_include_directories(test_opus_codec PRIVATE ${VC_TEST_INTERNAL_INCLUDES})
add_test(NAME opus_codec COMMAND test_opus_codec)
# M2 exit criterion: two headless clients relay encrypted Opus frames via the SFU.
add_executable(test_m2_voice test_m2_voice.cpp)
target_link_libraries(test_m2_voice PRIVATE voicecat::server)
target_compile_features(test_m2_voice PRIVATE cxx_std_20)
target_include_directories(test_m2_voice PRIVATE ${VC_TEST_INTERNAL_INCLUDES})
add_test(NAME m2_voice COMMAND test_m2_voice)
set_tests_properties(m2_voice PROPERTIES TIMEOUT 120)
endif()