Failed to set remote answer sdp: The order of m-lines in answer doesn't match order in offer. Reject

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Oleg I

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May 6, 2019, 5:21:28 AM5/6/19
to discuss-webrtc
Hi,
We discovered, that our remote desktop viewer stop work for Chrome 73, but Chromium 70.0.3538.77 works ok.
Can you help me what do i need to change in remote sdp
type: offer, sdp: v=0
o=- 5496635329544093123 2 IN IP4 127.0.0.1
s=-
t=0 0
a=group:BUNDLE 0 1
a=msid-semantic: WMS 6V364QEphe77spKLRwAxLfXOUMj1udofTLXv
m=video 9 UDP/TLS/RTP/SAVPF 96 97 98 99 100 101 102 122 127 121 125 107 108 109 124 120 123
c=IN IP4 0.0.0.0
a=rtcp:9 IN IP4 0.0.0.0
a=ice-ufrag:38U6
a=ice-pwd:q1lkRSLz9/3UOnrOI79j73MY
a=ice-options:trickle
a=fingerprint:sha-256 FB:9B:D8:2A:D5:70:A7:E6:54:24:1E:62:C0:36:AE:82:02:9A:58:88:3F:43:B4:25:FD:00:80:CC:43:52:A0:5B
a=setup:actpass
a=mid:0
a=extmap:2 urn:ietf:params:rtp-hdrext:toffset
a=extmap:4 urn:3gpp:video-orientation
a=extmap:9 urn:ietf:params:rtp-hdrext:sdes:mid
a=extmap:13 urn:ietf:params:rtp-hdrext:sdes:rtp-stream-id
a=extmap:14 urn:ietf:params:rtp-hdrext:sdes:repaired-rtp-stream-id
a=sendonly
a=msid:6V364QEphe77spKLRwAxLfXOUMj1udofTLXv 6f18557f-7f37-4448-bd02-e469a9432c80
a=rtcp-mux
a=rtcp-rsize
a=rtpmap:96 VP8/90000
a=rtcp-fb:96 goog-remb
a=rtcp-fb:96 transport-cc
a=rtcp-fb:96 ccm fir
a=rtcp-fb:96 nack
a=rtcp-fb:96 nack pli
a=rtpmap:97 rtx/90000
a=fmtp:97 apt=96
a=rtpmap:98 VP9/90000
a=rtcp-fb:98 goog-remb
a=rtcp-fb:98 transport-cc
a=rtcp-fb:98 ccm fir
a=rtcp-fb:98 nack
a=rtcp-fb:98 nack pli
a=fmtp:98 profile-id=0
a=rtpmap:99 rtx/90000
a=fmtp:99 apt=98
a=rtpmap:100 VP9/90000
a=rtcp-fb:100 goog-remb
a=rtcp-fb:100 transport-cc
a=rtcp-fb:100 ccm fir
a=rtcp-fb:100 nack
a=rtcp-fb:100 nack pli
a=fmtp:100 profile-id=2
a=rtpmap:101 rtx/90000
a=fmtp:101 apt=100
a=rtpmap:102 H264/90000
a=rtcp-fb:102 goog-remb
a=rtcp-fb:102 transport-cc
a=rtcp-fb:102 ccm fir
a=rtcp-fb:102 nack
a=rtcp-fb:102 nack pli
a=fmtp:102 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42001f
a=rtpmap:122 rtx/90000
a=fmtp:122 apt=102
a=rtpmap:127 H264/90000
a=rtcp-fb:127 goog-remb
a=rtcp-fb:127 transport-cc
a=rtcp-fb:127 ccm fir
a=rtcp-fb:127 nack
a=rtcp-fb:127 nack pli
a=fmtp:127 level-asymmetry-allowed=1;packetization-mode=0;profile-level-id=42001f
a=rtpmap:121 rtx/90000
a=fmtp:121 apt=127
a=rtpmap:125 H264/90000
a=rtcp-fb:125 goog-remb
a=rtcp-fb:125 transport-cc
a=rtcp-fb:125 ccm fir
a=rtcp-fb:125 nack
a=rtcp-fb:125 nack pli
a=fmtp:125 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42e01f
a=rtpmap:107 rtx/90000
a=fmtp:107 apt=125
a=rtpmap:108 H264/90000
a=rtcp-fb:108 goog-remb
a=rtcp-fb:108 transport-cc
a=rtcp-fb:108 ccm fir
a=rtcp-fb:108 nack
a=rtcp-fb:108 nack pli
a=fmtp:108 level-asymmetry-allowed=1;packetization-mode=0;profile-level-id=42e01f
a=rtpmap:109 rtx/90000
a=fmtp:109 apt=108
a=rtpmap:124 red/90000
a=rtpmap:120 rtx/90000
a=fmtp:120 apt=124
a=rtpmap:123 ulpfec/90000
a=ssrc-group:FID 737740099 1216688617
a=ssrc:737740099 cname:FZxIgwbc2QGdMjCo
a=ssrc:737740099 msid:6V364QEphe77spKLRwAxLfXOUMj1udofTLXv 6f18557f-7f37-4448-bd02-e469a9432c80
a=ssrc:737740099 mslabel:6V364QEphe77spKLRwAxLfXOUMj1udofTLXv
a=ssrc:737740099 label:6f18557f-7f37-4448-bd02-e469a9432c80
a=ssrc:1216688617 cname:FZxIgwbc2QGdMjCo
a=ssrc:1216688617 msid:6V364QEphe77spKLRwAxLfXOUMj1udofTLXv 6f18557f-7f37-4448-bd02-e469a9432c80
a=ssrc:1216688617 mslabel:6V364QEphe77spKLRwAxLfXOUMj1udofTLXv
a=ssrc:1216688617 label:6f18557f-7f37-4448-bd02-e469a9432c80
m=audio 9 UDP/TLS/RTP/SAVPF 111 103 104 9 0 8 106 105 13 110 112 113 126
c=IN IP4 0.0.0.0
a=rtcp:9 IN IP4 0.0.0.0
a=ice-ufrag:38U6
a=ice-pwd:q1lkRSLz9/3UOnrOI79j73MY
a=ice-options:trickle
a=fingerprint:sha-256 FB:9B:D8:2A:D5:70:A7:E6:54:24:1E:62:C0:36:AE:82:02:9A:58:88:3F:43:B4:25:FD:00:80:CC:43:52:A0:5B
a=setup:actpass
a=mid:1
a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level
a=extmap:9 urn:ietf:params:rtp-hdrext:sdes:mid
a=extmap:13 urn:ietf:params:rtp-hdrext:sdes:rtp-stream-id
a=extmap:14 urn:ietf:params:rtp-hdrext:sdes:repaired-rtp-stream-id
a=recvonly
a=rtcp-mux
a=rtpmap:111 opus/48000/2
a=rtcp-fb:111 transport-cc
a=fmtp:111 minptime=10;useinbandfec=1
a=rtpmap:103 ISAC/16000
a=rtpmap:104 ISAC/32000
a=rtpmap:9 G722/8000
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:106 CN/32000
a=rtpmap:105 CN/16000
a=rtpmap:13 CN/8000
a=rtpmap:110 telephone-event/48000
a=rtpmap:112 telephone-event/32000
a=rtpmap:113 telephone-event/16000
a=rtpmap:126 telephone-event/8000
-----------------------------------------------------------
type: answer, sdp: v=0
o=lvp 1983 678901 IN IP4 2.3.4.5
s=-
c=IN IP4 2.3.4.5
t=0 0
a=fingerprint:sha-256 6B:52:C5:FF:9D:B7:8D:E5:36:6C:30:03:EA:C6:9C:9E:CA:C9:CB:A4:88:B9:79:0B:4B:57:36:9A:08:41:15:21
a=setup:active
a=connection:new
m=audio 7858 RTP/SAVPF 8 110
c=IN IP4 2.3.4.5
a=ptime:20
a=minptime:1
a=maxptime:255
a=silenceSupp:off - - - -
a=rtpmap:8 PCMA/8000/1
a=rtpmap:110 telephone-event/48000
a=sendonly
a=rtcp-mux
a=ssrc:1001352057 cname:4987948cee5a52057dd4c69ffee38cfd
a=ssrc:1001352057 mslabel:600017d1-6ce9-4fbd-acfd-84e52057a2e2
a=ssrc:1001352057 label:lvp@audio1-52057
a=ice-ufrag:azk1NDY0MDI0MzE
a=ice-pwd:Njg0NTcwMTM1MjA1NwYIBA
a=candidate:Jk1ryxFwn 1 udp 2130706175 2.3.4.5 7858 typ host
m=video 7860 RTP/SAVPF 98
c=IN IP4 2.3.4.5
a=fmtp:98 profile-id=0
a=rtcp-fb:98 ccm fir
a=rtcp-fb:98 nack
a=rtcp-fb:98 goog-remb
a=ice-ufrag:vDo2NzoyMzE3MDI
a=ice-pwd:Njg0NTcwMTM1MjA1NwYIBA
a=fingerprint:sha-256 6B:52:C5:FF:9D:B7:8D:E5:36:6C:30:03:EA:C6:9C:9E:CA:C9:CB:A4:88:B9:79:0B:4B:57:36:9A:08:41:15:21
a=recvonly
a=rtcp-mux
a=rtpmap:98 VP9/90000
a=ssrc:2001352057 cname:4987948cee5a52057dd4c69ffee38cfd
a=ssrc:2001352057 mslabel:600017d1-6ce9-4fbd-acfd-84e52057a2e2
a=ssrc:2001352057 label:lvp@video1-52057
a=candidate:Jk1ryxFwn 1 udp 2130706175 2.3.4.5 7860 typ host
------------------------------------------
5/6/2019, 11:49:17 AM
setRemoteDescriptionOnFailure
Failed to set remote answer sdp: The order of m-lines in answer doesn't match order in offer. Rejecting answer.
5/6/2019, 11:49:17 AM
icecandidate (host)
5/6/2019, 11:49:17 AM
icecandidate (host)
5/6/2019, 11:49:17 AM
icegatheringstatechange
Stats Tables
googTrack_6f18557f-7f37-4448-bd02-e469a9432c80 (googTrack)
googLibjingleSession_5496635329544093123 (googLibjingleSession)
bweforvideo (VideoBwe)
googCertificate_FB:9B:D8:2A:D5:70:A7:E6:54:24:1E:62:C0:36:AE:82:02:9A:58:88:3F:43:B4:25:FD:00:80:CC:43:52:A0:5B (googCertificate)
Channel-0-1 (googComponent)
Cand-9VSvpdIv (localcandidate)
Cand-z2VU3iTD (localcandidate)
Channel-1-1 (googComponent)
Cand-hKP0zah1 (localcandidate)
Cand-nZs/4/RU (localcandidate)
ssrc_737740099_send (ssrc)


Lorenzo Miniero

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May 6, 2019, 5:30:49 AM5/6/19
to discuss-webrtc
As the error message says, the order of the m-lines is wrong. Your first m-line is a video one followed by an audio one, but the answer has them reversed. The order must be preserved.

Lorenzo

Oleg I

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May 7, 2019, 6:39:41 AM5/7/19
to discuss-webrtc
Thank you for prompt response, I did not believe it. Now i fixed it. 
Oleg

понедельник, 6 мая 2019 г., 12:30:49 UTC+3 пользователь Lorenzo Miniero написал:
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