Marco Sacchi
Reputation: 982
WebRTC: audio/video from remote peer is received exactly once yes and once no on Firefox
I'm working on a WebRTC project that requires moderated webinar-type rooms. On the server side it is based on Pion for SFU, and on the browser side on a proprietary javascript client.
After several days of debugging, I have still not been able to resolve the following behavior which only occurs on Firefox: the broadcast to the participants works exactly once every other time.
Below I have included the room join SDPs for two peers A and B, and those between peer A and the SFU, when changing the broadcast state of peer B.
This is a summary of what I can observe in peer A side each time I enable the broadcast of the peer B.
Similar behaviors/info when the broadcast fails or succeeds:
- both peers are on Firefox
- the SDPs generated by the SFU are similar, except for the mid identifiers, the audio/video tracks are always there
- negotiations never fail
ontrackevents are fired for both tracks on the javascript side- codecs used are OPUS/VP8 for both peers
- the m-lines and related transceivers seem to change direction correctly
- the
videoElement.srcObjectis correctly set to aMediaStreamobject, with both audio and videoMediaStreamTracks havingmuted=false,enable=true,readyState=live - there are no pending streams in either case in the javascript client,
an applicative-level stream is pending when:
- ontrack is not fired, for all the required tracks
- all the applicative-level signaling events to initialize the new view is not received
- firefox
about:webrtcshows:- ICE state succeeded selecting a trickled candidate that is
nominatedandselected: local: 192.168.1.3:58968/udp(host) [non-proxied]
remote: 192.168.1.3:41440/udp(host)
- ICE state succeeded selecting a trickled candidate that is
Different behaviors/info when the broadcast fail:
- the audio/video tracks have reversed order (video first) in the SDP sent by the SFU to peer A
onunmuteevent is triggered only for video track, but the view is blank- when muting video track for peer B while broadcasting is enabled,
onunmuteevent for the audio track is triggered on peer A, and the audio track becomes audible - if the video track is keep muted for peer B while broadcasting is enabled/disabled, the peer A can always ear peer B
- I see only an inbound-rtp audio track when it doesn't works, and inbound-rtp audio+video tracks when it works
Update 1
Inbound audio track for the non-working case, note the high packet loss:
Decoder: 111 audio/opus2 channels 48000 maxplaybackrate=48000;stereo=1;useinbandfec=1
Local: 15:39:28 GMT+0200 (Central European Summer Time) inbound-rtpReceived 21,854 packets (1728.69 Kb , 8.0 KBps)Lost -10,927 packetsJitter 0.002
Update 2
Enabling/disabling broadcast for peer B I can also observe this on webrtc internals:
- after the join there are only 2 outbound tracks, as expected
- broadcast activation: there are 2 inbound and 2 outbound tracks, as expected
- broadcast deactivation: 1 inbound video track (leaked?) and 2 outbound tracks (peer B audio/video)
- broadcast activation: 1 inbound audio track with different SSRC and 2 outbound tracks (peer B audio/video)
- broadcast deactivation: only 2 outbound tracks (audio/video), as expected
Note: although webrtc internals gives different results, on the javascript side the "similar behaviors/info" described above are always consistent (always both tracks, states, etc.).
To reply to comments below:
- I don't think it's an HDMI driver problem. I conducted the tests on Firefox (doesn't work) and Chrome (works) in the same PC and local development environment, using the same devices, or fake devices to work cross-browser, without changes in the results. By muting the audio, the video is not displayed, only the opposite works.
...snip....
Due to body limitation of 30k characters I have excluded SDPs exchange between peers and SFU to join the room.
You can find full info here.
...snip....
Peers A and B are succesfully connected to the SFU, and neither of them sees the other as required.
From here only peer A renegotiate with the SFU.
Now peer B broadcasting is enabled to the participants (in that case the only peer A)
Remote SDP (offer from SFU)
v=0
o=- 6404238063867404676 1713866681 IN IP4 0.0.0.0
s=-
t=0 0
a=fingerprint:sha-256 47:6A:71:15:C0:01:A4:3E:B6:AC:C6:8B:E2:84:B1:C0:1D:49:6F:F1:14:0C:1F:C4:BD:B2:30:56:10:BB:9D:36
a=group:BUNDLE 0 1 2
m=audio 9 UDP/TLS/RTP/SAVPF 111 0 8 9
c=IN IP4 0.0.0.0
a=setup:actpass
a=mid:0
a=ice-ufrag:WRtsEOiaoItPEqup
a=ice-pwd:eadmhjMMzpurJPeaIqdGCwUyihOpRLzv
a=rtcp-mux
a=rtcp-rsize
a=rtpmap:111 opus/48000/2
a=fmtp:111 minptime=10;useinbandfec=1
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:9 G722/8000
a=ssrc:556646705 cname:{ccedd829-80b6-4d6e-95d5-5ea497e9a4fd}
a=ssrc:556646705 msid:{ccedd829-80b6-4d6e-95d5-5ea497e9a4fd} 6e65e23b-ca79-49c9-8fa2-1c8edada26e8
a=ssrc:556646705 mslabel:{ccedd829-80b6-4d6e-95d5-5ea497e9a4fd}
a=ssrc:556646705 label:6e65e23b-ca79-49c9-8fa2-1c8edada26e8
a=msid:{ccedd829-80b6-4d6e-95d5-5ea497e9a4fd} 6e65e23b-ca79-49c9-8fa2-1c8edada26e8
a=sendrecv
a=candidate:foundation 1 udp 2130706431 192.168.1.3 34668 typ host generation 0
a=candidate:foundation 2 udp 2130706431 192.168.1.3 34668 typ host generation 0
a=candidate:foundation 1 udp 2130706431 192.168.122.1 53777 typ host generation 0
a=candidate:foundation 2 udp 2130706431 192.168.122.1 53777 typ host generation 0
a=candidate:foundation 1 udp 2130706431 172.17.0.1 49086 typ host generation 0
a=candidate:foundation 2 udp 2130706431 172.17.0.1 49086 typ host generation 0
a=candidate:foundation 1 udp 16777215 2.32.201.189 51726 typ relay raddr 0.0.0.0 rport 54578 generation 0
a=candidate:foundation 2 udp 16777215 2.32.201.189 51726 typ relay raddr 0.0.0.0 rport 54578 generation 0
a=end-of-candidates
m=video 9 UDP/TLS/RTP/SAVPF 96 98 102
c=IN IP4 0.0.0.0
a=setup:actpass
a=mid:1
a=ice-ufrag:WRtsEOiaoItPEqup
a=ice-pwd:eadmhjMMzpurJPeaIqdGCwUyihOpRLzv
a=rtcp-mux
a=rtcp-rsize
a=rtpmap:96 VP8/90000
a=rtpmap:98 VP9/90000
a=rtpmap:102 H264/90000
a=fmtp:102 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42001f
a=ssrc:2184094840 cname:{ccedd829-80b6-4d6e-95d5-5ea497e9a4fd}
a=ssrc:2184094840 msid:{ccedd829-80b6-4d6e-95d5-5ea497e9a4fd} ed97af1a-2ed6-4f13-9ca5-7a70008c7d9a
a=ssrc:2184094840 mslabel:{ccedd829-80b6-4d6e-95d5-5ea497e9a4fd}
a=ssrc:2184094840 label:ed97af1a-2ed6-4f13-9ca5-7a70008c7d9a
a=msid:{ccedd829-80b6-4d6e-95d5-5ea497e9a4fd} ed97af1a-2ed6-4f13-9ca5-7a70008c7d9a
a=sendrecv
a=candidate:foundation 1 udp 2130706431 192.168.1.3 34668 typ host generation 0
a=candidate:foundation 2 udp 2130706431 192.168.1.3 34668 typ host generation 0
a=candidate:foundation 1 udp 2130706431 192.168.122.1 53777 typ host generation 0
a=candidate:foundation 2 udp 2130706431 192.168.122.1 53777 typ host generation 0
a=candidate:foundation 1 udp 2130706431 172.17.0.1 49086 typ host generation 0
a=candidate:foundation 2 udp 2130706431 172.17.0.1 49086 typ host generation 0
a=candidate:foundation 1 udp 16777215 2.32.201.189 51726 typ relay raddr 0.0.0.0 rport 54578 generation 0
a=candidate:foundation 2 udp 16777215 2.32.201.189 51726 typ relay raddr 0.0.0.0 rport 54578 generation 0
a=end-of-candidates
m=application 9 DTLS/SCTP 5000
c=IN IP4 0.0.0.0
a=setup:actpass
a=mid:2
a=sendrecv
a=sctpmap:5000 webrtc-datachannel 1024
a=ice-ufrag:WRtsEOiaoItPEqup
a=ice-pwd:eadmhjMMzpurJPeaIqdGCwUyihOpRLzv
a=candidate:foundation 1 udp 2130706431 192.168.1.3 34668 typ host generation 0
a=candidate:foundation 2 udp 2130706431 192.168.1.3 34668 typ host generation 0
a=candidate:foundation 1 udp 2130706431 192.168.122.1 53777 typ host generation 0
a=candidate:foundation 2 udp 2130706431 192.168.122.1 53777 typ host generation 0
a=candidate:foundation 1 udp 2130706431 172.17.0.1 49086 typ host generation 0
a=candidate:foundation 2 udp 2130706431 172.17.0.1 49086 typ host generation 0
a=candidate:foundation 1 udp 16777215 2.32.201.189 51726 typ relay raddr 0.0.0.0 rport 54578 generation 0
a=candidate:foundation 2 udp 16777215 2.32.201.189 51726 typ relay raddr 0.0.0.0 rport 54578 generation 0
a=end-of-candidates
Local SDP (answer from Firefox)
v=0
o=mozilla...THIS_IS_SDPARTA-99.0 957846499555280282 2 IN IP4 0.0.0.0
s=-
t=0 0
a=fingerprint:sha-256 F1:90:80:57:6B:21:4B:3B:46:39:BE:EC:DD:DA:8B:EB:0B:41:CA:39:42:87:F6:71:CC:DD:E9:86:4D:3D:F4:00
a=group:BUNDLE 0 1 2
a=ice-options:trickle
a=msid-semantic:WMS *
m=audio 35036 UDP/TLS/RTP/SAVPF 111 0 8 9
c=IN IP4 2.32.201.189
a=candidate:0 1 UDP 2122252543 192.168.1.3 45832 typ host
a=candidate:3 1 UDP 2122187007 192.168.122.1 57330 typ host
a=candidate:6 1 UDP 2122121471 172.17.0.1 57309 typ host
a=candidate:9 1 TCP 2105524479 192.168.1.3 9 typ host tcptype active
a=candidate:11 1 TCP 2105458943 192.168.122.1 9 typ host tcptype active
a=candidate:13 1 TCP 2105393407 172.17.0.1 9 typ host tcptype active
a=candidate:10 1 UDP 8331263 2.32.201.189 35036 typ relay raddr 2.32.201.189 rport 35036
a=candidate:12 1 UDP 8265727 2.32.201.189 50962 typ relay raddr 2.32.201.189 rport 50962
a=candidate:14 1 UDP 8200191 2.32.201.189 50650 typ relay raddr 2.32.201.189 rport 50650
a=sendrecv
a=end-of-candidates
a=fmtp:111 maxplaybackrate=48000;stereo=1;useinbandfec=1
a=ice-pwd:ad33262c89431a763c05ff11078b9726
a=ice-ufrag:d238b152
a=mid:0
a=msid:{23cd2d5f-bba0-44c1-864c-a2e45ef7dea9} {72b45279-8868-4950-a352-62f19035b630}
a=rtcp-mux
a=rtpmap:111 opus/48000/2
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:9 G722/8000/1
a=setup:passive
a=ssrc:3915669289 cname:{0cc435ca-987f-4679-abe7-e250eb82ec3a}
m=video 9 UDP/TLS/RTP/SAVPF 96 98
c=IN IP4 0.0.0.0
a=sendrecv
a=fmtp:96 max-fs=12288;max-fr=60
a=fmtp:98 max-fs=12288;max-fr=60
a=ice-pwd:ad33262c89431a763c05ff11078b9726
a=ice-ufrag:d238b152
a=mid:1
a=msid:{23cd2d5f-bba0-44c1-864c-a2e45ef7dea9} {91e5cfec-72bd-4df9-a367-c17769f8be97}
a=rtcp-mux
a=rtcp-rsize
a=rtpmap:96 VP8/90000
a=rtpmap:98 VP9/90000
a=setup:passive
a=ssrc:2924201237 cname:{0cc435ca-987f-4679-abe7-e250eb82ec3a}
m=application 9 DTLS/SCTP 5000
c=IN IP4 0.0.0.0
a=sendrecv
a=ice-pwd:ad33262c89431a763c05ff11078b9726
a=ice-ufrag:d238b152
a=mid:2
a=sctpmap:5000 webrtc-datachannel 256
a=setup:passive
a=max-message-size:1073741823
Peer A can see/ear peer B.
Disabling the broadcasting results as follows:
Remote SDP (offer from SFU)
v=0
o=- 5646507004176508049 1713867601 IN IP4 0.0.0.0
s=-
t=0 0
a=fingerprint:sha-256 47:6A:71:15:C0:01:A4:3E:B6:AC:C6:8B:E2:84:B1:C0:1D:49:6F:F1:14:0C:1F:C4:BD:B2:30:56:10:BB:9D:36
a=group:BUNDLE 0 1 2
m=audio 9 UDP/TLS/RTP/SAVPF 111 0 8 9
c=IN IP4 0.0.0.0
a=setup:actpass
a=mid:0
a=ice-ufrag:WRtsEOiaoItPEqup
a=ice-pwd:eadmhjMMzpurJPeaIqdGCwUyihOpRLzv
a=rtcp-mux
a=rtcp-rsize
a=rtpmap:111 opus/48000/2
a=fmtp:111 minptime=10;useinbandfec=1
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:9 G722/8000
a=recvonly
a=candidate:foundation 1 udp 2130706431 192.168.1.3 34668 typ host generation 0
a=candidate:foundation 2 udp 2130706431 192.168.1.3 34668 typ host generation 0
a=candidate:foundation 1 udp 2130706431 192.168.122.1 53777 typ host generation 0
a=candidate:foundation 2 udp 2130706431 192.168.122.1 53777 typ host generation 0
a=candidate:foundation 1 udp 2130706431 172.17.0.1 49086 typ host generation 0
a=candidate:foundation 2 udp 2130706431 172.17.0.1 49086 typ host generation 0
a=candidate:foundation 1 udp 16777215 2.32.201.189 51726 typ relay raddr 0.0.0.0 rport 54578 generation 0
a=candidate:foundation 2 udp 16777215 2.32.201.189 51726 typ relay raddr 0.0.0.0 rport 54578 generation 0
a=end-of-candidates
m=video 9 UDP/TLS/RTP/SAVPF 96 98 102
c=IN IP4 0.0.0.0
a=setup:actpass
a=mid:1
a=ice-ufrag:WRtsEOiaoItPEqup
a=ice-pwd:eadmhjMMzpurJPeaIqdGCwUyihOpRLzv
a=rtcp-mux
a=rtcp-rsize
a=rtpmap:96 VP8/90000
a=rtpmap:98 VP9/90000
a=rtpmap:102 H264/90000
a=fmtp:102 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42001f
a=recvonly
a=candidate:foundation 1 udp 2130706431 192.168.1.3 34668 typ host generation 0
a=candidate:foundation 2 udp 2130706431 192.168.1.3 34668 typ host generation 0
a=candidate:foundation 1 udp 2130706431 192.168.122.1 53777 typ host generation 0
a=candidate:foundation 2 udp 2130706431 192.168.122.1 53777 typ host generation 0
a=candidate:foundation 1 udp 2130706431 172.17.0.1 49086 typ host generation 0
a=candidate:foundation 2 udp 2130706431 172.17.0.1 49086 typ host generation 0
a=candidate:foundation 1 udp 16777215 2.32.201.189 51726 typ relay raddr 0.0.0.0 rport 54578 generation 0
a=candidate:foundation 2 udp 16777215 2.32.201.189 51726 typ relay raddr 0.0.0.0 rport 54578 generation 0
a=end-of-candidates
m=application 9 DTLS/SCTP 5000
c=IN IP4 0.0.0.0
a=setup:actpass
a=mid:2
a=sendrecv
a=sctpmap:5000 webrtc-datachannel 1024
a=ice-ufrag:WRtsEOiaoItPEqup
a=ice-pwd:eadmhjMMzpurJPeaIqdGCwUyihOpRLzv
a=candidate:foundation 1 udp 2130706431 192.168.1.3 34668 typ host generation 0
a=candidate:foundation 2 udp 2130706431 192.168.1.3 34668 typ host generation 0
a=candidate:foundation 1 udp 2130706431 192.168.122.1 53777 typ host generation 0
a=candidate:foundation 2 udp 2130706431 192.168.122.1 53777 typ host generation 0
a=candidate:foundation 1 udp 2130706431 172.17.0.1 49086 typ host generation 0
a=candidate:foundation 2 udp 2130706431 172.17.0.1 49086 typ host generation 0
a=candidate:foundation 1 udp 16777215 2.32.201.189 51726 typ relay raddr 0.0.0.0 rport 54578 generation 0
a=candidate:foundation 2 udp 16777215 2.32.201.189 51726 typ relay raddr 0.0.0.0 rport 54578 generation 0
a=end-of-candidates
Local SDP (answer from Firefox)
v=0
o=mozilla...THIS_IS_SDPARTA-99.0 957846499555280282 3 IN IP4 0.0.0.0
s=-
t=0 0
a=fingerprint:sha-256 F1:90:80:57:6B:21:4B:3B:46:39:BE:EC:DD:DA:8B:EB:0B:41:CA:39:42:87:F6:71:CC:DD:E9:86:4D:3D:F4:00
a=group:BUNDLE 0 1 2
a=ice-options:trickle
a=msid-semantic:WMS *
m=audio 35036 UDP/TLS/RTP/SAVPF 111 0 8 9
c=IN IP4 2.32.201.189
a=candidate:0 1 UDP 2122252543 192.168.1.3 45832 typ host
a=candidate:3 1 UDP 2122187007 192.168.122.1 57330 typ host
a=candidate:6 1 UDP 2122121471 172.17.0.1 57309 typ host
a=candidate:9 1 TCP 2105524479 192.168.1.3 9 typ host tcptype active
a=candidate:11 1 TCP 2105458943 192.168.122.1 9 typ host tcptype active
a=candidate:13 1 TCP 2105393407 172.17.0.1 9 typ host tcptype active
a=candidate:10 1 UDP 8331263 2.32.201.189 35036 typ relay raddr 2.32.201.189 rport 35036
a=candidate:12 1 UDP 8265727 2.32.201.189 50962 typ relay raddr 2.32.201.189 rport 50962
a=candidate:14 1 UDP 8200191 2.32.201.189 50650 typ relay raddr 2.32.201.189 rport 50650
a=sendonly
a=end-of-candidates
a=fmtp:111 maxplaybackrate=48000;stereo=1;useinbandfec=1
a=ice-pwd:ad33262c89431a763c05ff11078b9726
a=ice-ufrag:d238b152
a=mid:0
a=msid:{23cd2d5f-bba0-44c1-864c-a2e45ef7dea9} {72b45279-8868-4950-a352-62f19035b630}
a=rtcp-mux
a=rtpmap:111 opus/48000/2
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:9 G722/8000/1
a=setup:passive
a=ssrc:3915669289 cname:{0cc435ca-987f-4679-abe7-e250eb82ec3a}
m=video 9 UDP/TLS/RTP/SAVPF 96 98
c=IN IP4 0.0.0.0
a=sendonly
a=fmtp:96 max-fs=12288;max-fr=60
a=fmtp:98 max-fs=12288;max-fr=60
a=ice-pwd:ad33262c89431a763c05ff11078b9726
a=ice-ufrag:d238b152
a=mid:1
a=msid:{23cd2d5f-bba0-44c1-864c-a2e45ef7dea9} {91e5cfec-72bd-4df9-a367-c17769f8be97}
a=rtcp-mux
a=rtcp-rsize
a=rtpmap:96 VP8/90000
a=rtpmap:98 VP9/90000
a=setup:passive
a=ssrc:2924201237 cname:{0cc435ca-987f-4679-abe7-e250eb82ec3a}
m=application 9 DTLS/SCTP 5000
c=IN IP4 0.0.0.0
a=sendrecv
a=ice-pwd:ad33262c89431a763c05ff11078b9726
a=ice-ufrag:d238b152
a=mid:2
a=sctpmap:5000 webrtc-datachannel 256
a=setup:passive
a=max-message-size:1073741823
Reenabling the broadcasting results as follows:
Remote SDP (offer from SFU)
v=0
o=- 8896423429130464586 1713867815 IN IP4 0.0.0.0
s=-
t=0 0
a=fingerprint:sha-256 47:6A:71:15:C0:01:A4:3E:B6:AC:C6:8B:E2:84:B1:C0:1D:49:6F:F1:14:0C:1F:C4:BD:B2:30:56:10:BB:9D:36
a=group:BUNDLE 0 1 2 3 4
m=audio 9 UDP/TLS/RTP/SAVPF 111 0 8 9
c=IN IP4 0.0.0.0
a=setup:actpass
a=mid:0
a=ice-ufrag:WRtsEOiaoItPEqup
a=ice-pwd:eadmhjMMzpurJPeaIqdGCwUyihOpRLzv
a=rtcp-mux
a=rtcp-rsize
a=rtpmap:111 opus/48000/2
a=fmtp:111 minptime=10;useinbandfec=1
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:9 G722/8000
a=recvonly
a=candidate:foundation 1 udp 2130706431 192.168.1.3 34668 typ host generation 0
a=candidate:foundation 2 udp 2130706431 192.168.1.3 34668 typ host generation 0
a=candidate:foundation 1 udp 2130706431 192.168.122.1 53777 typ host generation 0
a=candidate:foundation 2 udp 2130706431 192.168.122.1 53777 typ host generation 0
a=candidate:foundation 1 udp 2130706431 172.17.0.1 49086 typ host generation 0
a=candidate:foundation 2 udp 2130706431 172.17.0.1 49086 typ host generation 0
a=candidate:foundation 1 udp 16777215 2.32.201.189 51726 typ relay raddr 0.0.0.0 rport 54578 generation 0
a=candidate:foundation 2 udp 16777215 2.32.201.189 51726 typ relay raddr 0.0.0.0 rport 54578 generation 0
a=end-of-candidates
m=video 9 UDP/TLS/RTP/SAVPF 96 98 102
c=IN IP4 0.0.0.0
a=setup:actpass
a=mid:1
a=ice-ufrag:WRtsEOiaoItPEqup
a=ice-pwd:eadmhjMMzpurJPeaIqdGCwUyihOpRLzv
a=rtcp-mux
a=rtcp-rsize
a=rtpmap:96 VP8/90000
a=rtpmap:98 VP9/90000
a=rtpmap:102 H264/90000
a=fmtp:102 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42001f
a=recvonly
a=candidate:foundation 1 udp 2130706431 192.168.1.3 34668 typ host generation 0
a=candidate:foundation 2 udp 2130706431 192.168.1.3 34668 typ host generation 0
a=candidate:foundation 1 udp 2130706431 192.168.122.1 53777 typ host generation 0
a=candidate:foundation 2 udp 2130706431 192.168.122.1 53777 typ host generation 0
a=candidate:foundation 1 udp 2130706431 172.17.0.1 49086 typ host generation 0
a=candidate:foundation 2 udp 2130706431 172.17.0.1 49086 typ host generation 0
a=candidate:foundation 1 udp 16777215 2.32.201.189 51726 typ relay raddr 0.0.0.0 rport 54578 generation 0
a=candidate:foundation 2 udp 16777215 2.32.201.189 51726 typ relay raddr 0.0.0.0 rport 54578 generation 0
a=end-of-candidates
m=application 9 DTLS/SCTP 5000
c=IN IP4 0.0.0.0
a=setup:actpass
a=mid:2
a=sendrecv
a=sctpmap:5000 webrtc-datachannel 1024
a=ice-ufrag:WRtsEOiaoItPEqup
a=ice-pwd:eadmhjMMzpurJPeaIqdGCwUyihOpRLzv
a=candidate:foundation 1 udp 2130706431 192.168.1.3 34668 typ host generation 0
a=candidate:foundation 2 udp 2130706431 192.168.1.3 34668 typ host generation 0
a=candidate:foundation 1 udp 2130706431 192.168.122.1 53777 typ host generation 0
a=candidate:foundation 2 udp 2130706431 192.168.122.1 53777 typ host generation 0
a=candidate:foundation 1 udp 2130706431 172.17.0.1 49086 typ host generation 0
a=candidate:foundation 2 udp 2130706431 172.17.0.1 49086 typ host generation 0
a=candidate:foundation 1 udp 16777215 2.32.201.189 51726 typ relay raddr 0.0.0.0 rport 54578 generation 0
a=candidate:foundation 2 udp 16777215 2.32.201.189 51726 typ relay raddr 0.0.0.0 rport 54578 generation 0
a=end-of-candidates
m=video 9 UDP/TLS/RTP/SAVPF 96 98 102
c=IN IP4 0.0.0.0
a=setup:actpass
a=mid:3
a=ice-ufrag:WRtsEOiaoItPEqup
a=ice-pwd:eadmhjMMzpurJPeaIqdGCwUyihOpRLzv
a=rtcp-mux
a=rtcp-rsize
a=rtpmap:96 VP8/90000
a=rtpmap:98 VP9/90000
a=rtpmap:102 H264/90000
a=fmtp:102 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42001f
a=ssrc:2184094840 cname:{ccedd829-80b6-4d6e-95d5-5ea497e9a4fd}
a=ssrc:2184094840 msid:{ccedd829-80b6-4d6e-95d5-5ea497e9a4fd} ed97af1a-2ed6-4f13-9ca5-a989ded52e33
a=ssrc:2184094840 mslabel:{ccedd829-80b6-4d6e-95d5-5ea497e9a4fd}
a=ssrc:2184094840 label:ed97af1a-2ed6-4f13-9ca5-a989ded52e33
a=msid:{ccedd829-80b6-4d6e-95d5-5ea497e9a4fd} ed97af1a-2ed6-4f13-9ca5-a989ded52e33
a=sendrecv
a=candidate:foundation 1 udp 2130706431 192.168.1.3 34668 typ host generation 0
a=candidate:foundation 2 udp 2130706431 192.168.1.3 34668 typ host generation 0
a=candidate:foundation 1 udp 2130706431 192.168.122.1 53777 typ host generation 0
a=candidate:foundation 2 udp 2130706431 192.168.122.1 53777 typ host generation 0
a=candidate:foundation 1 udp 2130706431 172.17.0.1 49086 typ host generation 0
a=candidate:foundation 2 udp 2130706431 172.17.0.1 49086 typ host generation 0
a=candidate:foundation 1 udp 16777215 2.32.201.189 51726 typ relay raddr 0.0.0.0 rport 54578 generation 0
a=candidate:foundation 2 udp 16777215 2.32.201.189 51726 typ relay raddr 0.0.0.0 rport 54578 generation 0
a=end-of-candidates
m=audio 9 UDP/TLS/RTP/SAVPF 111 0 8 9
c=IN IP4 0.0.0.0
a=setup:actpass
a=mid:4
a=ice-ufrag:WRtsEOiaoItPEqup
a=ice-pwd:eadmhjMMzpurJPeaIqdGCwUyihOpRLzv
a=rtcp-mux
a=rtcp-rsize
a=rtpmap:111 opus/48000/2
a=fmtp:111 minptime=10;useinbandfec=1
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:9 G722/8000
a=ssrc:556646705 cname:{ccedd829-80b6-4d6e-95d5-5ea497e9a4fd}
a=ssrc:556646705 msid:{ccedd829-80b6-4d6e-95d5-5ea497e9a4fd} 6e65e23b-ca79-49c9-8fa2-db07bcf7d813
a=ssrc:556646705 mslabel:{ccedd829-80b6-4d6e-95d5-5ea497e9a4fd}
a=ssrc:556646705 label:6e65e23b-ca79-49c9-8fa2-db07bcf7d813
a=msid:{ccedd829-80b6-4d6e-95d5-5ea497e9a4fd} 6e65e23b-ca79-49c9-8fa2-db07bcf7d813
a=sendrecv
a=candidate:foundation 1 udp 2130706431 192.168.1.3 34668 typ host generation 0
a=candidate:foundation 2 udp 2130706431 192.168.1.3 34668 typ host generation 0
a=candidate:foundation 1 udp 2130706431 192.168.122.1 53777 typ host generation 0
a=candidate:foundation 2 udp 2130706431 192.168.122.1 53777 typ host generation 0
a=candidate:foundation 1 udp 2130706431 172.17.0.1 49086 typ host generation 0
a=candidate:foundation 2 udp 2130706431 172.17.0.1 49086 typ host generation 0
a=candidate:foundation 1 udp 16777215 2.32.201.189 51726 typ relay raddr 0.0.0.0 rport 54578 generation 0
a=candidate:foundation 2 udp 16777215 2.32.201.189 51726 typ relay raddr 0.0.0.0 rport 54578 generation 0
a=end-of-candidates
Local SDP (answer from Firefox)
v=0
o=mozilla...THIS_IS_SDPARTA-99.0 957846499555280282 4 IN IP4 0.0.0.0
s=-
t=0 0
a=fingerprint:sha-256 F1:90:80:57:6B:21:4B:3B:46:39:BE:EC:DD:DA:8B:EB:0B:41:CA:39:42:87:F6:71:CC:DD:E9:86:4D:3D:F4:00
a=group:BUNDLE 0 1 2 3 4
a=ice-options:trickle
a=msid-semantic:WMS *
m=audio 35036 UDP/TLS/RTP/SAVPF 111 0 8 9
c=IN IP4 2.32.201.189
a=candidate:0 1 UDP 2122252543 192.168.1.3 45832 typ host
a=candidate:3 1 UDP 2122187007 192.168.122.1 57330 typ host
a=candidate:6 1 UDP 2122121471 172.17.0.1 57309 typ host
a=candidate:9 1 TCP 2105524479 192.168.1.3 9 typ host tcptype active
a=candidate:11 1 TCP 2105458943 192.168.122.1 9 typ host tcptype active
a=candidate:13 1 TCP 2105393407 172.17.0.1 9 typ host tcptype active
a=candidate:10 1 UDP 8331263 2.32.201.189 35036 typ relay raddr 2.32.201.189 rport 35036
a=candidate:12 1 UDP 8265727 2.32.201.189 50962 typ relay raddr 2.32.201.189 rport 50962
a=candidate:14 1 UDP 8200191 2.32.201.189 50650 typ relay raddr 2.32.201.189 rport 50650
a=sendonly
a=end-of-candidates
a=fmtp:111 maxplaybackrate=48000;stereo=1;useinbandfec=1
a=ice-pwd:ad33262c89431a763c05ff11078b9726
a=ice-ufrag:d238b152
a=mid:0
a=msid:{23cd2d5f-bba0-44c1-864c-a2e45ef7dea9} {72b45279-8868-4950-a352-62f19035b630}
a=rtcp-mux
a=rtpmap:111 opus/48000/2
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:9 G722/8000/1
a=setup:passive
a=ssrc:3915669289 cname:{0cc435ca-987f-4679-abe7-e250eb82ec3a}
m=video 9 UDP/TLS/RTP/SAVPF 96 98
c=IN IP4 0.0.0.0
a=sendonly
a=fmtp:96 max-fs=12288;max-fr=60
a=fmtp:98 max-fs=12288;max-fr=60
a=ice-pwd:ad33262c89431a763c05ff11078b9726
a=ice-ufrag:d238b152
a=mid:1
a=msid:{23cd2d5f-bba0-44c1-864c-a2e45ef7dea9} {91e5cfec-72bd-4df9-a367-c17769f8be97}
a=rtcp-mux
a=rtcp-rsize
a=rtpmap:96 VP8/90000
a=rtpmap:98 VP9/90000
a=setup:passive
a=ssrc:2924201237 cname:{0cc435ca-987f-4679-abe7-e250eb82ec3a}
m=application 9 DTLS/SCTP 5000
c=IN IP4 0.0.0.0
a=sendrecv
a=ice-pwd:ad33262c89431a763c05ff11078b9726
a=ice-ufrag:d238b152
a=mid:2
a=sctpmap:5000 webrtc-datachannel 256
a=setup:passive
a=max-message-size:1073741823
m=video 9 UDP/TLS/RTP/SAVPF 96 98
c=IN IP4 0.0.0.0
a=recvonly
a=fmtp:96 max-fs=12288;max-fr=60
a=fmtp:98 max-fs=12288;max-fr=60
a=ice-pwd:ad33262c89431a763c05ff11078b9726
a=ice-ufrag:d238b152
a=mid:3
a=rtcp-mux
a=rtcp-rsize
a=rtpmap:96 VP8/90000
a=rtpmap:98 VP9/90000
a=setup:active
a=ssrc:1868673906 cname:{0cc435ca-987f-4679-abe7-e250eb82ec3a}
m=audio 9 UDP/TLS/RTP/SAVPF 111 0 8 9
c=IN IP4 0.0.0.0
a=recvonly
a=fmtp:111 maxplaybackrate=48000;stereo=1;useinbandfec=1
a=ice-pwd:ad33262c89431a763c05ff11078b9726
a=ice-ufrag:d238b152
a=mid:4
a=rtcp-mux
a=rtpmap:111 opus/48000/2
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:9 G722/8000/1
a=setup:active
a=ssrc:2201530307 cname:{0cc435ca-987f-4679-abe7-e250eb82ec3a}
Peer A cannot see/ear again the peer B.
Upvotes: 1
Views: 111
Answers (0)
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