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Media stream does not end properly.
Reported by
onury...@gmail.com,
May 4 2017
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Issue descriptionUserAgent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.96 Safari/537.36 Steps to reproduce the problem: 1.Start screen sharing with local user. 2.See the new stream in remote user. 3.Stop screen sharing with local user. 4.See the stream as frozen and not ended properly. What is the expected behavior? After stopping the screen sharing stream in local user, the stream should be stopped on all remote users' screens and new camera stream should be started. 'onended' of screen share stream should be triggered. 'onaddstream' should be triggered for new camera stream. What went wrong? After stopping the screen sharing stream in local user, the stream does not stop on remote users' screens. 'Failed to set remote offer sdp: Session error code: ERROR_CONTENT. Session error description: Failed to set remote video description streams..' is logged after a fail case. Did this work before? Yes Chrome 57 Does this work in other browsers? N/A Chrome version: 58.0.3029.96 Channel: stable OS Version: 6.1 (Windows 7, Windows Server 2008 R2) Flash Version: In the attachment files there is logs for a success and a fail case of stopping screen share stream. SSRC of the screen share stream for success case is '2515828785' and for fail case is '1666394796'. The error can occur for every participant and in every session. Error can also occur with re-doing the steps right after a success case.
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May 8 2017
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May 8 2017
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May 11 2017
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Jun 16 2017
See linked issue. Fixed in canary, and is going to be fixed in M60.
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Jun 16 2017
I retested the issue in canary M61 and beta M60 again and it doesnt seems to be fixed. I will try to give more information soon.
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Jun 16 2017
Huh. The "fail_case" log indicates that it's the same issue, though.
1. Packet received from SSRC 1666394796 before the remote description containing the SSRC is set. "Default receive stream" created.
[4100:7280:0503/091946.708:INFO:webrtcvideoengine2.cc(433)] Creating default receive stream for SSRC=1666394796.
[4100:7280:0503/091946.708:INFO:webrtcvideoengine2.cc(1146)] AddRecvStream (default stream): {ssrcs:[1666394796];ssrc_groups:;}
...
[4100:7280:0503/091946.708:INFO:rtp_stream_receiver.cc(346)] Packet received on SSRC: 1666394796 with payload type: 100, timestamp: 3395617778, sequence number: 26407, arrival time: 62468808, abs send time: 8716597
[4100:7280:0503/091946.708:INFO:rtp_receiver_video.cc(74)] Received first video RTP packet
2. Remote description set. "Default receive stream" upgraded to a normal stream, and re-created.
[4100:7280:0503/091946.720:INFO:channel.cc(2112)] Setting remote video description
[4100:7280:0503/091946.720:INFO:webrtcvideoengine2.cc(1146)] AddRecvStream: {id:3bd0169e-1e07-49de-8c7f-fda0df906f9f;ssrcs:[1666394796];ssrc_groups:;cname:98LuJJ/qfuA5B4Oe;sync_label:d126491b-7e31-4e99-8673-dad51ceeef2a}
3. Packet received from SSRC 2297682562; the receive stream for 1666394796 is destroyed (here's where the problem occurs):
[4100:7280:0503/091956.036:INFO:video_receive_stream.cc(236)] ~VideoReceiveStream: {decoders: [{decoder: (VideoDecoder), payload_type: 100, payload_name: VP8, codec_params: {}}], rtp: {remote_ssrc: 1666394796, local_ssrc: 1919582465, rtcp_mode: RtcpMode::kCompound, rtcp_xr: {receiver_reference_time_report: off}, remb: on, transport_cc: off, nack: {rtp_history_ms: 1000}, ulpfec: {ulpfec_payload_type: -1, red_payload_type: -1, red_rtx_payload_type: -1}, rtx_ssrc: 0, rtx_payload_types: {100 (apt) -> -1 (pt), }, extensions: [{uri: http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time, id: 3}, {uri: urn:ietf:params:rtp-hdrext:toffset, id: 2}]}, renderer: (renderer), render_delay_ms: 10, sync_group: d126491b-7e31-4e99-8673-dad51ceeef2a, pre_decode_callback: nullptr, target_delay_ms: 0}
[4100:7280:0503/091956.036:INFO:webrtcvideoengine2.cc(433)] Creating default receive stream for SSRC=2297682562.
[4100:7280:0503/091956.036:INFO:webrtcvideoengine2.cc(1146)] AddRecvStream (default stream): {ssrcs:[2297682562];ssrc_groups:;}
[4100:7280:0503/091956.036:INFO:video_receive_stream.cc(206)] VideoReceiveStream: {decoders: [{decoder: (VideoDecoder), payload_type: 100, payload_name: VP8, codec_params: {}}], rtp: {remote_ssrc: 2297682562, local_ssrc: 1919582465, rtcp_mode: RtcpMode::kCompound, rtcp_xr: {receiver_reference_time_report: off}, remb: on, transport_cc: off, nack: {rtp_history_ms: 1000}, ulpfec: {ulpfec_payload_type: -1, red_payload_type: -1, red_rtx_payload_type: -1}, rtx_ssrc: 0, rtx_payload_types: {100 (apt) -> -1 (pt), }, extensions: [{uri: http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time, id: 3}, {uri: urn:ietf:params:rtp-hdrext:toffset, id: 2}]}, renderer: (renderer), render_delay_ms: 10, pre_decode_callback: nullptr, target_delay_ms: 0}
4. Remote description set with SSRC 1666394796 removed. Receive stream removed a second time, but it's already removed, which causes the error:
[4100:7280:0503/091956.167:INFO:webrtcvideoengine2.cc(1239)] RemoveRecvStream: 1666394796
[4100:7280:0503/091956.168:ERROR:webrtcvideoengine2.cc(1249)] Stream not found for ssrc: 1666394796
[4100:2788:0503/091956.168:ERROR:channel.cc(934)] Failure in SetRemoteContent with action 0
[4100:2788:0503/091956.168:ERROR:webrtcsession.cc(334)] Failed to set remote offer sdp: Session error code: ERROR_CONTENT. Session error description: Failed to set remote video description streams..
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Jun 16 2017
I haven't analyzed this bug carefully, but the MediaStream "ended" does not exist. It does not exist in the spec and it was removed from Chrome about a year ago, so expecting that event is never going to work. It's tracks that can end.
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Jun 16 2017
I meant "ended" event in #8. |
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Comment 1 by onury...@gmail.com
, May 8 2017