mirror of
https://github.com/ossrs/srs.git
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6e93dd73b5
Fix issue #4570 by supporting optional `msid` attribute in WebRTC SDP negotiation, enabling compatibility with libdatachannel and other clients that don't include msid information. SRS failed to negotiate WebRTC connections from libdatachannel clients because: - libdatachannel SDP lacks `a=ssrc:XX msid:stream_id track_id` attributes - SRS required msid information to create track descriptions - According to RFC 8830, the msid attribute and its appdata (track_id) are **optional** If diligently look at the SDP generated by libdatachannel: ``` a=ssrc:42 cname:video-send a=ssrc:43 cname:audio-send ``` It's deliberately missing the `a=ssrc:XX msid:stream_id track_id` line, comparing that with this one: ``` a=ssrc:42 cname:video-send a=ssrc:42 msid:stream_id video_track_id a=ssrc:43 cname:audio-send a=ssrc:43 msid:stream_id audio_track_id ``` In such a situation, to keep compatible with libdatachannel, if no msid line in sdp, SRS comprehensively and consistently uses: * app/stream as stream_id, such as live/livestream * type=video|audio, cname, and ssrc as track_id, such as track-video-video-send-43
98 lines
2.9 KiB
JSON
98 lines
2.9 KiB
JSON
{
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"version": "0.2.0",
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"configurations": [
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{
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"name": "Debug SRS with conf/console.conf",
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"type": "cppdbg",
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"request": "launch",
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"program": "${workspaceFolder}/trunk/cmake/build/srs",
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"args": ["-c", "conf/console.conf"],
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"stopAtEntry": false,
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"cwd": "${workspaceFolder}/trunk",
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"environment": [],
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"externalConsole": false,
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"linux": {
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"MIMode": "gdb"
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},
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"osx": {
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"MIMode": "lldb"
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},
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"setupCommands": [
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{
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"description": "Enable pretty-printing for gdb",
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"text": "-enable-pretty-printing",
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"ignoreFailures": true
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}
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],
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"preLaunchTask": "build",
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"logging": {
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"engineLogging": true
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}
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},
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{
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"name": "Debug SRS with conf/rtc.conf",
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"type": "cppdbg",
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"request": "launch",
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"program": "${workspaceFolder}/trunk/cmake/build/srs",
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"args": ["-c", "conf/rtc.conf"],
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"stopAtEntry": false,
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"cwd": "${workspaceFolder}/trunk",
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"environment": [],
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"externalConsole": false,
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"linux": {
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"MIMode": "gdb"
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},
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"osx": {
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"MIMode": "lldb"
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},
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"setupCommands": [
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{
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"description": "Enable pretty-printing for gdb",
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"text": "-enable-pretty-printing",
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"ignoreFailures": true
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}
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],
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"preLaunchTask": "build",
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"logging": {
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"engineLogging": true
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}
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},
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{
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"name": "Debug srs-proxy",
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"type": "go",
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"request": "launch",
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"mode": "auto",
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"cwd": "${workspaceFolder}/proxy",
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"program": "${workspaceFolder}/proxy"
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},
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{
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"name": "Debug SRS (macOS, CodeLLDB) console.conf",
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"type": "lldb",
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"request": "launch",
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"program": "${workspaceFolder}/trunk/cmake/build/srs",
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"args": ["-c", "console.conf"],
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"cwd": "${workspaceFolder}/trunk",
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"stopOnEntry": false,
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"terminal": "integrated",
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"initCommands": [
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"command script import lldb.formatters.cpp.libcxx"
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],
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"preLaunchTask": "build",
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"env": {},
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"sourceLanguages": ["cpp"]
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},
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{
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"name": "Debug gtest (macOS CodeLLDB)",
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"type": "lldb",
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"request": "launch",
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"program": "${workspaceFolder}/trunk/cmake/build/utest",
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"args": ["--gtest_filter=*${selectedText}*"],
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"cwd": "${workspaceFolder}/trunk",
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"terminal": "integrated",
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"initCommands": [
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"command script import lldb.formatters.cpp.libcxx"
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],
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"sourceLanguages": ["cpp"]
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}
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]
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} |