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Re: [rtcweb] Syntax issues in draft-ietf-rtcweb-sdp

Harald Alvestrand <harald@alvestrand.no> Sun, 03 December 2017 20:22 UTC

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To: Adam Roach <adam@nostrum.com>, "rtcweb@ietf.org" <rtcweb@ietf.org>
Cc: draft-ietf-rtcweb-sdp@tools.ietf.org
References: <92b7b153-754a-0237-ad0a-6ec08c40e262@nostrum.com>
From: Harald Alvestrand <harald@alvestrand.no>
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Date: Sun, 03 Dec 2017 21:22:42 +0100
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Archived-At: <https://mailarchive.ietf.org/arch/msg/rtcweb/Lre7abgJFeW9EJze3nrcAe90yIY>
Subject: Re: [rtcweb] Syntax issues in draft-ietf-rtcweb-sdp
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Great to see attention on this!

Nils Ohlmeier also wrote an extraction script
(https://github.com/nils-ohlmeier/sdpextractor - I have suggested a PR
that changes the file name format), do you want to publish yours too?

One of my "really want to do this some day" projects is to extract the
SDP examples and throw them at Chrome to see that at least the parser
doesn't blow up on them.

Harald

Den 02. des. 2017 04:47, skrev Adam Roach:
> [as an individual]
> 
> I wrote a script that extracts the SDP from the XML source of
> draft-ietf-rtcweb-sdp-08 and does some very basic syntax checks on it.
> I'm posting the results here as feedback on the document to assist in
> correcting the examples. Note that I have *not* performed any semantic
> verification of the SDP itself, only the syntax.
> 
> Total error count: 152
> 
> ==============================================================================
> 
> 5.2.1 SDP Offer
> ==============================================================================
> 
> v=0
> o=- 20518 0 IN IP4 0.0.0.0
> s=-
> t=0 0
> a=group:BUNDLE audio
> a=ice-options:trickle
> a=identity:eyJpZHAiOnsiZG9tYWluIjoibmlpZi5odSIsInByb3RvY29sIjoiaWRwLmh0bWwifSwiYXNzZXJ0a
> W9uIjoiZXlKaGJHY2lPaUpTVXpJMU5pSXNJblI1Y0NJNklrcFhVeUo5LmV5SmpiMjUwWlc1MGN5STZleUptYVc1b
> lpYSndjbWx1ZENJNlczc2lZV3huYjNKcGRHaHRJam9pYzJoaExUSTFOaUlzSW1ScFoyVnpkQ0k2SWprek9rTXdPa
> kl6T2pKR09rRXlPakF3T2pBd09qQkVPalV4T2tGRE9rUXlPalUwT2pZMU9rWTBPak5DT2pkRU9qa3lPa1JET2pnN
> E9qTXpPalV4T2pJek9qUXdPamN5T2preE9qZ3pPalZDT2pBeE9qSkdPalV3T2pjNE9qTkdJbjFkZlN3aWFXUmxib
> lJwZEhraU9pSnRhWE5wUUc1cGFXWXVhSFVpZlEuSTVQdGhKNFFDT05TOFVXd25OOUh3MEdaTDl3d0RBVGRrTWtFW
> llmdlNVTTJ6Umd5R09WSGgzRmpnc2FPZklkRnFsNUx6azBFbndVOTNQOUlCQ0xZOWtia3V1c0V1S25YRGVNLTNIN
> WFmdTJvZl9CTlZjUnB3MmdBdlNBbVR6SlltcEpqMFEtdmV0TmtVT1huZE9HLUIzT3ZGb3QwZVNENlZSNUdhb2wyc
> GduS3FSTktOd3dacEZ1eUZZbFRodHJIdGNiT19WV3o4QnZpTThKS25OdExWd1JxNUhMX2ZLTlRCNzFDYkoyWmh5W
> XU1UEdwWDhXcXJMWC1ybm5YSFY3RnhoTTh5OHdrLWd5cnRZazVnbFlZeUFrcTVqZklSXzRzWER5d19Qc1BWTW1aZ
> XltenVGV3BQTzVFWlJYR0ZpRjFET0o4Q0Q3Z3Zta2dUdlBXSWpkemtBIn0=
> 
> *** ERROR: invalid syntax for 'identity'
> *** Note: Removing errant spaces fixes this problem.
> 
> m=audio 54609 UDP/TLS/RTP/SAVPF 109 0 8
> c=IN IP4 203.0.113.141
> a=mid:audio
> a=msid:ma ta
> a=sendrecv
> a=rtpmap:109 opus/48000/2
> a=rtpmap:0 PCMU/8000
> a=rtpmap:8 PCMA/8000
> a=maxptime:120
> a=ice-ufrag:074c6550
> a=ice-pwd:a28a397a4c3f31747d1ee3474af08a068
> a=fingerprint:sha-256 19:E2:1C:3B:4B:9F:81:E6:B8:5C:F4:A5:A8:D8:73:04
> :BB:05:2F:70:9F:04:A9:0E:05:E9:26:33:E8:70:88:A2
> 
> *** ERROR: invalid syntax for 'fingerprint'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=setup:actpass
> a=tls-id:1
> 
> *** ERROR: invalid syntax for 'tls-id'
> *** Note: tls-id must be 20 chars or longer.
> 
> a=rtcp-mux
> a=rtcp:60065 IN IP4 203.0.113.141
> a=rtcp-rsize
> a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> a=candidate:0 1 UDP  2122194687 192.0.2.4 61665 typ host
> 
> *** ERROR: invalid syntax for 'candidate'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=candidate:1 1 UDP  1685987071 203.0.113.141 54609 typ srflx raddr
> 192.0.2.4 rport 61665
> 
> *** ERROR: invalid syntax for 'candidate'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=candidate:0 2 UDP  2122194687 192.0.2.4 61667 typ host
> 
> *** ERROR: invalid syntax for 'candidate'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=candidate:1 2 UDP  1685987071 203.0.113.141 60065 typ srflx raddr
> 192.0.2.4 rport 61667
> 
> *** ERROR: invalid syntax for 'candidate'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=end-of-candidates
> 
> ==============================================================================
> 
> 5.2.1 SDP Answer
> ==============================================================================
> 
> v=0
> o=-  16833 0 IN IP4 0.0.0.0
> s=-
> t=0 0
> a=group:BUNDLE audio
> a=ice-options:trickle
> a=identity:ew0KICAiaWRwIjp7DQogICAgImRvbWFpbiI6ICJjaXNjb3NwYXJrLmNvbSIsDQogICAg
> InByb3RvY29sIjogImRlZmF1bHQiDQogIH0sDQogICJhc3NlcnRpb24iOiAibEp3WkVocmFVOXBTblJo
> V0U1d1VVYzFjR0ZYV1hWaFNGVnBabEV1U1RWUWRHaEtORkZEVDA1VE9GVlhkMjVPT1VoM01FZGFURGwz
> ZDBSQlZHUnJUV3RGVw0KICAgICAgICAgICAgICBsbG1kbE5WVFRKNlVtZDVSMDlXU0dnelJtcG5jMkZQ
> Wmtsa1JuRnNOVXg2YXpCRmJuZFZPVE5RT1VsQ1EweFpPV3RpYTNWMWMwVjFTMjVZUkdWTkxUTklODQog
> ICAgICAgICAgICAgIFdGbWRUSnZabDlDVGxaalVuQjNNbWRCZGxOQmJWUjZTbGx0Y0VwcU1GRXRkbVYw
> VG10VlQxaHVaRTlITFVJelQzWkdiM1F3WlZORU5sWlNOVWRoYjJ3eWMNCiAgICAgICAgICAgICAgR2R1
> UzNGU1RrdE9kM2RhY0VaMWVVWlpiRlJvZEhKSWRHTmlUMTlXVjNvNFFuWnBUVGhLUzI1T2RFeFdkMUp4
> TlVoTVgyWkxUbFJDTnpGRFlrb3lXbWg1VyINCn0=
> 
> *** ERROR: invalid syntax for 'identity'
> *** Note: Removing errant spaces fixes this problem.
> 
> m=audio 49203 UDP/TLS/RTP/SAVPF 109 0 8
> c=IN IP4 203.0.113.77
> a=mid:audio
> a=msid:ma ta
> a=sendrecv
> a=rtpmap:109 opus/48000/2
> a=rtpmap:0 PCMU/8000
> a=rtpmap:8 PCMA/8000
> a=maxptime:120
> a=ice-ufrag:05067423
> a=ice-pwd:1747d1ee3474a28a397a4c3f3af08a068
> a=fingerprint:sha-256 6B:8B:F0:65:5F:78:E2:51:3B:AC:6F:F3:3F:46:1B:35
> :DC:B8:5F:64:1A:24:C2:43:F0:A1:58:D0:A1:2C:19:08
> 
> *** ERROR: invalid syntax for 'fingerprint'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=setup:active
> a=tls-id:1
> 
> *** ERROR: invalid syntax for 'tls-id'
> *** Note: tls-id must be 20 chars or longer.
> 
> a=rtcp-mux
> a=rtcp-rsize
> a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> a=candidate:0 1 UDP 2122194687 198.51.100.7 51556 typ host
> a=candidate:1 1 UDP 1685987071 203.0.113.77 49203 typ srflx raddr
> 198.51.100.7 rport 51556
> a=end-of-candidates
> 
> ==============================================================================
> 
> 5.2.2.1 SDP Offer
> ==============================================================================
> 
> v=0
> o=- 20518 0 IN IP4 0.0.0.0
> s=-
> t=0 0
> a=group:BUNDLE audio video
> a=group:LS audio video
> a=ice-options:trickle
> m=audio 54609 UDP/TLS/RTP/SAVPF 109 0 8
> c=IN IP4 203.0.113.141
> a=mid:audio
> a=msid:ma ta
> a=sendrecv
> a=rtpmap:109 opus/48000/2
> a=rtpmap:0 PCMU/8000
> a=rtpmap:8 PCMA/8000
> a=maxptime:120
> a=ice-ufrag:074c6550
> a=ice-pwd:a28a397a4c3f31747d1ee3474af08a068
> a=fingerprint:sha-256 19:E2:1C:3B:4B:9F:81:E6:B8:5C:F4:A5:A8:D8:73:04:
> BB:05:2F:70:9F:04:A9:0E:05:E9:26:33:E8:70:88:A2
> 
> *** ERROR: invalid syntax for 'fingerprint'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=setup:actpass
> a=tls-id:1
> 
> *** ERROR: invalid syntax for 'tls-id'
> *** Note: tls-id must be 20 chars or longer.
> 
> a=rtcp-mux
> a=rtcp-mux-only
> a=rtcp-rsize
> a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> a=candidate:0 1 UDP  2122194687 192.0.2.4 61665 typ host
> 
> *** ERROR: invalid syntax for 'candidate'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=candidate:1 1 UDP  1685987071 203.0.113.141 54609 typ srflx raddr
> 192.0.2.4 rport 61665
> 
> *** ERROR: invalid syntax for 'candidate'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=end-of-candidates
> m=video 54609 UDP/TLS/RTP/SAVPF 99 120
> c=IN IP4 203.0.113.141
> a=mid:video
> a=msid:ma tb
> a=sendrecv
> a=rtpmap:99 H264/90000
> a=fmtp:99 profile-level-id=4d0028;packetization-mode=1
> a=rtpmap:120 VP8/90000
> a=rtcp-fb:99 nack
> a=rtcp-fb:99 nack pli
> a=rtcp-fb:99 ccm fir
> a=rtcp-fb:120 nack
> a=rtcp-fb:120 nack pli
> a=rtcp-fb:120 ccm fir
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> 
> ==============================================================================
> 
> 5.2.2.1 SDP Answer
> ==============================================================================
> 
> v=0
> o=-  16833 0 IN IP4 0.0.0.0
> s=-
> t=0 0
> a=group:BUNDLE audio video
> a=group:LS audio video
> a=ice-options:trickle
> m=audio 49203 UDP/TLS/RTP/SAVPF 109
> c=IN IP4 203.0.113.77
> a=mid:audio
> a=msid:ma ta
> a=sendrecv
> a=rtpmap:109 opus/48000/2
> a=maxptime:120
> a=ice-ufrag:c300d85b
> a=ice-pwd:de4e99bd291c325921d5d47efbabd9a2
> a=fingerprint:sha-256 6B:8B:F0:65:5F:78:E2:51:3B:AC:6F:F3:3F:46:1B:35
> :DC:B8:5F:64:1A:24:C2:43:F0:A1:58:D0:A1:2C:19:08
> 
> *** ERROR: invalid syntax for 'fingerprint'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=setup:active
> a=tls-id:1
> 
> *** ERROR: invalid syntax for 'tls-id'
> *** Note: tls-id must be 20 chars or longer.
> 
> a=rtcp-mux
> a=rtcp-mux-only
> a=rtcp-rsize
> a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> a=candidate:0 1 UDP 3618095783 198.51.100.7 49203 typ host
> a=candidate:1 1 UDP 565689203 203.0.113.77 49203 typ srflx raddr
> 198.51.100.7 rport 51556
> a=end-of-candidates
> m=video 49203 UDP/TLS/RTP/SAVPF 99
> c=IN IP4 203.0.113.77
> a=mid:video
> a=msid:ma tb
> a=sendrecv
> a=rtpmap:99 H264/90000
> a=fmtp:99 profile-level-id=4d0028;packetization-mode=1
> a=rtcp-fb:99 nack
> a=rtcp-fb:99 nack pli
> a=rtcp-fb:99 ccm fir
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> 
> ==============================================================================
> 
> 5.2.2.2 SDP Offer
> ==============================================================================
> 
> v=0
> o=- 20518 0 IN IP4 0.0.0.0
> s=-
> t=0 0
> a=group:BUNDLE audio video
> a=group:LS audio video
> a=ice-options:trickle
> m=audio 54609 UDP/TLS/RTP/SAVPF 109 0 8
> c=IN IP4 203.0.113.141
> a=mid:audio
> a=msid:ma ta
> a=sendrecv
> a=rtpmap:109 opus/48000/2
> a=rtpmap:0 PCMU/8000
> a=rtpmap:8 PCMA/8000
> a=maxptime:120
> a=ice-ufrag:074c6550
> a=ice-pwd:a28a397a4c3f31747d1ee3474af08a068
> a=fingerprint:sha-256 19:E2:1C:3B:4B:9F:81:E6:B8:5C:F4:A5:A8:D8:73:04:
> BB:05:2F:70:9F:04:A9:0E:05:E9:26:33:E8:70:88:A2
> 
> *** ERROR: invalid syntax for 'fingerprint'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=setup:actpass
> a=tls-id:1
> 
> *** ERROR: invalid syntax for 'tls-id'
> *** Note: tls-id must be 20 chars or longer.
> 
> a=rtcp-mux
> a=rtcp-mux-only
> a=rtcp-rsize
> a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> a=candidate:0 1 UDP  2122194687 192.0.2.4 61665 typ host
> 
> *** ERROR: invalid syntax for 'candidate'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=candidate:0 1 UDP  2122194687 2001:DB8:8101:3a55:4858:a2a9:22ff:99b9
> 61665 typ host
> 
> *** ERROR: invalid syntax for 'candidate'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=end-of-candidates
> m=video 54609 UDP/TLS/RTP/SAVPF 99 120
> c=IN IP4 203.0.113.141
> a=mid:video
> a=msid:ma tb
> a=sendrecv
> a=rtpmap:99 H264/90000
> a=fmtp:99 profile-level-id=4d0028;packetization-mode=1
> a=rtpmap:120 VP8/90000
> a=rtcp-fb:99 nack
> a=rtcp-fb:99 nack pli
> a=rtcp-fb:99 ccm fir
> a=rtcp-fb:120 nack
> a=rtcp-fb:120 nack pli
> a=rtcp-fb:120 ccm fir
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> 
> ==============================================================================
> 
> 5.2.2.2 SDP Answer
> ==============================================================================
> 
> v=0
> o=-  16833 0 IN IP4 0.0.0.0
> s=-
> t=0 0
> a=group:BUNDLE audio video
> a=group:LS audio video
> a=ice-options:trickle
> m=audio 49203 UDP/TLS/RTP/SAVPF 109
> c=IN IP4 203.0.113.77
> a=mid:audio
> a=msid:ma ta
> a=sendrecv
> a=rtpmap:109 opus/48000/2
> a=maxptime:120
> a=ice-ufrag:c300d85b
> a=ice-pwd:de4e99bd291c325921d5d47efbabd9a2
> a=fingerprint:sha-256 6B:8B:F0:65:5F:78:E2:51:3B:AC:6F:F3:3F:46:1B:35
> :DC:B8:5F:64:1A:24:C2:43:F0:A1:58:D0:A1:2C:19:08
> 
> *** ERROR: invalid syntax for 'fingerprint'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=setup:active
> a=tls-id:1
> 
> *** ERROR: invalid syntax for 'tls-id'
> *** Note: tls-id must be 20 chars or longer.
> 
> a=rtcp-mux
> a=rtcp-mux-only
> a=rtcp-rsize
> a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> a=candidate:0 1 UDP 3618095783 198.51.100.7 49203 typ host
> a=candidate:0 1 UDP 3618095783 2001:DB8:30c:1266:5916:3779:22f6:77f7
> 49203 typ host
> a=end-of-candidates
> m=video 49203 UDP/TLS/RTP/SAVPF 99
> c=IN IP4 203.0.113.77
> a=mid:video
> a=msid:ma tb
> a=sendrecv
> a=rtpmap:99 H264/90000
> a=fmtp:99 profile-level-id=4d0028;packetization-mode=1
> a=rtcp-fb:99 nack
> a=rtcp-fb:99 nack pli
> a=rtcp-fb:99 ccm fir
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> 
> ==============================================================================
> 
> 5.2.3 SDP Offer
> ==============================================================================
> 
> v=0
> o=- 20518 0 IN IP4 0.0.0.0
> s=-
> t=0 0
> a=group:BUNDLE data
> a=ice-options:trickle
> m=application 54609 UDP/DTLS/SCTP webrtc-datachannel
> c=IN IP4 203.0.113.141
> a=mid:data
> a=sendrecv
> a=sctp-port:5000
> a=max-message-size:100000
> a=setup:actpass
> a=tls-id:1
> 
> *** ERROR: invalid syntax for 'tls-id'
> *** Note: tls-id must be 20 chars or longer.
> 
> a=ice-ufrag:074c6550
> a=ice-pwd:a28a397a4c3f31747d1ee3474af08a068
> a=fingerprint:sha-256 19:E2:1C:3B:4B:9F:81:E6:B8:5C:F4:A5:A8:D8:73:04
> :BB:05:2F:70:9F:04:A9:0E:05:E9:26:33:E8:70:88:A2
> 
> *** ERROR: invalid syntax for 'fingerprint'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=candidate:0 1 UDP 2113667327 192.0.2.4 61665 typ host
> a=candidate:1 1 UDP 1694302207 203.0.113.141 54609 typ srflx raddr
> 192.0.2.4 rport 61665
> a=end-of-candidates
> 
> ==============================================================================
> 
> 5.2.3 SDP Answer
> ==============================================================================
> 
> v=0
> o=-  16833 0 IN IP4 0.0.0.0
> s=-
> t=0 0
> a=group:BUNDLE data
> m=application 49203 UDP/DTLS/SCTP webrtc-datachannel
> c=IN IP4 203.0.113.77
> a=mid:data
> a=sendrecv
> a=sctp-port:5000
> a=max-message-size:100000
> a=setup:active
> a=tls-id:1
> 
> *** ERROR: invalid syntax for 'tls-id'
> *** Note: tls-id must be 20 chars or longer.
> 
> a=ice-ufrag:c300d85b
> a=ice-pwd:de4e99bd291c325921d5d47efbabd9a2
> a=fingerprint:sha-256 6B:8B:F0:65:5F:78:E2:51:3B:AC:6F:F3:3F:46:1B:35
> :DC:B8:5F:64:1A:24:C2:43:F0:A1:58:D0:A1:2C:19:08
> 
> *** ERROR: invalid syntax for 'fingerprint'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=candidate:0 1 UDP 2113667327 198.51.100.7 51556 typ host
> a=candidate:1 1 UDP 1694302207 203.0.113.77 49203 typ srflx raddr
> 198.51.100.7 rport 51556
> a=end-of-candidates
> 
> ==============================================================================
> 
> 5.2.4 SDP Offer
> ==============================================================================
> 
> v=0
> o=- 20518 0 IN IP4 0.0.0.0
> s=-
> t=0 0
> a=group:BUNDLE audio
> a=ice-options:trickle
> m=audio 54609 UDP/TLS/RTP/SAVPF 109
> c=IN IP4 203.0.113.141
> a=mid:audio
> a=msid:ma ta
> a=sendrecv
> a=rtpmap:109 opus/48000/2
> a=maxptime:120
> a=ice-ufrag:074c6550
> a=ice-pwd:a28a397a4c3f31747d1ee3474af08a068
> a=fingerprint:sha-256 19:E2:1C:3B:4B:9F:81:E6:B8:5C:F4:A5:A8:D8:73:04
> :BB:05:2F:70:9F:04:A9:0E:05:E9:26:33:E8:70:88:A2
> 
> *** ERROR: invalid syntax for 'fingerprint'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=setup:actpass
> a=tls-id:1
> 
> *** ERROR: invalid syntax for 'tls-id'
> *** Note: tls-id must be 20 chars or longer.
> 
> a=rtcp-mux
> a=rtcp-mux-only
> a=rtcp-rsize
> a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> a=candidate:0 1 UDP  2113667327 192.0.2.4 61665 typ host
> 
> *** ERROR: invalid syntax for 'candidate'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=candidate:1 1 UDP  1685987071 203.0.113.141 54609 typ srflx raddr
> 192.0.2.4 rport 61665
> 
> *** ERROR: invalid syntax for 'candidate'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=end-of-candidates
> 
> ==============================================================================
> 
> 5.2.4 SDP Answer
> ==============================================================================
> 
> v=0
> o=-  16833 0 IN IP4 0.0.0.0
> s=-
> t=0 0
> a=group:BUNDLE audio
> m=audio 49203 UDP/TLS/RTP/SAVPF 109
> c=IN IP4 203.0.113.77
> a=mid:audio
> a=msid:ma ta
> a=inactive
> a=rtpmap:109 opus/48000/2
> a=maxptime:120
> a=ice-ufrag:c300d85b
> a=ice-pwd:de4e99bd291c325921d5d47efbabd9a2
> a=fingerprint:sha-256 6B:8B:F0:65:5F:78:E2:51:3B:AC:6F:F3:3F:46:1B:35
> :DC:B8:5F:64:1A:24:C2:43:F0:A1:58:D0:A1:2C:19:08
> 
> *** ERROR: invalid syntax for 'fingerprint'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=setup:active
> a=tls-id:1
> 
> *** ERROR: invalid syntax for 'tls-id'
> *** Note: tls-id must be 20 chars or longer.
> 
> a=rtcp-mux
> a=rtcp-mux-only
> a=rtcp-rsize
> a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> a=candidate:0 1 UDP  2113667327 198.51.100.7 51556 typ host
> 
> *** ERROR: invalid syntax for 'candidate'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=candidate:1 1 UDP  1685987071 203.0.113.141 49203 typ srflx raddr
> 198.51.100.7 rport 51556
> 
> *** ERROR: invalid syntax for 'candidate'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=end-of-candidates
> 
> ==============================================================================
> 
> 5.2.5 SDP Offer
> ==============================================================================
> 
> v=0
> o=- 20518 0 IN IP4 0.0.0.0
> s=-
> t=0 0
> a=group:BUNDLE audio dtmf
> a=ice-options:trickle
> m=audio 54609 UDP/TLS/RTP/SAVPF 109 0 8
> c=IN IP4 203.0.113.141
> a=mid:audio
> a=msid:ma ta
> a=sendrecv
> a=rtpmap:109 opus/48000/2
> a=rtpmap:0 PCMU/8000
> a=rtpmap:8 PCMA/8000
> a=maxptime:120
> a=ice-ufrag:074c6550
> a=ice-pwd:a28a397a4c3f31747d1ee3474af08a068
> a=fingerprint:sha-256 19:E2:1C:3B:4B:9F:81:E6:B8:5C:F4:A5:A8:D8:73:04
> :BB:05:2F:70:9F:04:A9:0E:05:E9:26:33:E8:70:88:A2
> 
> *** ERROR: invalid syntax for 'fingerprint'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=setup:actpass
> a=tls-id:1
> 
> *** ERROR: invalid syntax for 'tls-id'
> *** Note: tls-id must be 20 chars or longer.
> 
> a=rtcp-mux
> a=rtcp-mux-only
> a=rtcp-rsize
> a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> a=candidate:0 1 UDP  2122194687 192.0.2.4 61665 typ host
> 
> *** ERROR: invalid syntax for 'candidate'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=candidate:1 1 UDP  1685987071 203.0.113.141 54609 typ srflx raddr
> 192.0.2.4 rport 61665
> 
> *** ERROR: invalid syntax for 'candidate'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=end-of-candidates
> m=audio 54609 UDP/TLS/RTP/SAVPF 126
> c=IN IP4 203.0.113.141
> a=mid:dtmf
> a=msid:ma tb
> a=sendonly
> a=rtpmap:126 telephone-event/8000
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> 
> ==============================================================================
> 
> 5.2.5 SDP Answer
> ==============================================================================
> 
> v=0
> o=-  16833 0 IN IP4 0.0.0.0
> s=-
> t=0 0
> a=group:BUNDLE audio dtmf
> m=audio 49203 UDP/TLS/RTP/SAVPF 109
> c=IN IP4 203.0.113.77
> a=mid:audio
> a=msid:ma ta
> a=sendrecv
> a=rtpmap:109 opus/48000/2
> a=maxptime:120
> a=ice-ufrag:c300d85b
> a=ice-pwd:de4e99bd291c325921d5d47efbabd9a2
> a=fingerprint:sha-256 6B:8B:F0:65:5F:78:E2:51:3B:AC:6F:F3:3F:46:1B:35
> :DC:B8:5F:64:1A:24:C2:43:F0:A1:58:D0:A1:2C:19:08
> 
> *** ERROR: invalid syntax for 'fingerprint'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=setup:active
> a=tls-id:1
> 
> *** ERROR: invalid syntax for 'tls-id'
> *** Note: tls-id must be 20 chars or longer.
> 
> a=rtcp-mux
> a=rtcp-mux-only
> a=rtcp-rsize
> a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> a=candidate:0 1 UDP 2122194687 198.51.100.7 51556 typ host
> a=candidate:1 1 UDP 1685987071 203.0.113.77 49203 typ srflx raddr
> 198.51.100.7 rport 51556
> a=end-of-candidates
> m=audio 49203 UDP/TLS/RTP/SAVPF 126
> c=IN IP4 203.0.113.77
> a=mid:dtmf
> a=msid:ma tb
> a=recvonly
> a=rtpmap:126 telephone-event/8000
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> 
> ==============================================================================
> 
> 5.2.6 SDP Offer
> ==============================================================================
> 
> v=0
> o=- 20519 0 IN IP4 0.0.0.0
> s=-
> t=0 0
> a=group:BUNDLE audio video
> a=group:LS audio video
> a=ice-options:trickle
> m=audio 54609 UDP/TLS/RTP/SAVPF 109
> c=IN IP4 203.0.113.141
> a=mid:audio
> a=msid:ma ta
> a=sendonly
> a=rtpmap:109 opus/48000/2
> a=maxptime:120
> a=ice-ufrag:074c6550
> a=ice-pwd:a28a397a4c3f31747d1ee3474af08a068
> a=fingerprint:sha-256 19:E2:1C:3B:4B:9F:81:E6:B8:5C:F4:A5:A8:D8:73:04
> :BB:05:2F:70:9F:04:A9:0E:05:E9:26:33:E8:70:88:A2
> 
> *** ERROR: invalid syntax for 'fingerprint'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=setup:actpass
> a=tls-id:1
> 
> *** ERROR: invalid syntax for 'tls-id'
> *** Note: tls-id must be 20 chars or longer.
> 
> a=rtcp-mux
> a=rtcp-mux-only
> a=rtcp-rsize
> a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> a=candidate:0 1 UDP  2122194687 203.0.113.141 54609 typ host
> 
> *** ERROR: invalid syntax for 'candidate'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=end-of-candidates
> m=video 54609 UDP/TLS/RTP/SAVPF 120
> c=IN IP4 203.0.113.141
> a=mid:video
> a=msid:ma tb
> a=sendonly
> a=rtpmap:120 VP8/90000
> a=content:slides
> a=rtcp-fb:120 nack
> a=rtcp-fb:120 nack pli
> a=rtcp-fb:120 ccm fir
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> 
> ==============================================================================
> 
> 5.2.6 SDP Answer
> ==============================================================================
> 
> v=0
> o=- 16833 0 IN IP4 0.0.0.0
> s=-
> t=0 0
> a=group:BUNDLE audio video
> a=group:LS audio video
> a=ice-options:trickle
> m=audio 49203 UDP/TLS/RTP/SAVPF 109
> c=IN IP4 203.0.113.77
> a=mid:audio
> a=msid:ma ta
> a=recvonly
> a=rtpmap:109 opus/48000/2
> a=maxptime:120
> a=ice-ufrag:c300d85b
> a=ice-pwd:de4e99bd291c325921d5d47efbabd9a2
> a=fingerprint:sha-256 6B:8B:F0:65:5F:78:E2:51:3B:AC:6F:F3:3F:46:1B:35
> :DC:B8:5F:64:1A:24:C2:43:F0:A1:58:D0:A1:2C:19:08
> 
> *** ERROR: invalid syntax for 'fingerprint'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=setup:active
> a=tls-id:1
> 
> *** ERROR: invalid syntax for 'tls-id'
> *** Note: tls-id must be 20 chars or longer.
> 
> a=rtcp-mux
> a=rtcp-mux-only
> a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> a=candidate:0 1 UDP 2113667327 203.0.113.77 49203 typ host
> a=end-of-candidates
> m=video 49203 UDP/TLS/RTP/SAVPF 120
> c=IN IP4 203.0.113.77
> a=mid:video
> a=msid:ma tb
> a=recvonly
> a=rtpmap:120 VP8/90000
> a=content:slides
> a=rtcp-fb:120 nack
> a=rtcp-fb:120 nack pli
> a=rtcp-fb:120 ccm fir
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> 
> ==============================================================================
> 
> 5.2.7 SDP Offer w/BUNDLE
> ==============================================================================
> 
> v=0
> o=- 20518 0 IN IP4 0.0.0.0
> s=-
> t=0 0
> a=group:BUNDLE audio video
> a=group:LS audio video
> a=ice-options:trickle
> m=audio 54609 UDP/TLS/RTP/SAVPF 109
> c=IN IP4 203.0.113.141
> a=mid:audio
> a=msid:ma ta
> a=sendrecv
> a=rtpmap:109 opus/48000/2
> a=maxptime:120
> a=ice-ufrag:074c6550
> a=ice-pwd:a28a397a4c3f31747d1ee3474af08a068
> a=fingerprint:sha-256 19:E2:1C:3B:4B:9F:81:E6:B8:5C:F4:A5:A8:D8:73:04
> :BB:05:2F:70:9F:04:A9:0E:05:E9:26:33:E8:70:88:A2
> 
> *** ERROR: invalid syntax for 'fingerprint'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=setup:actpass
> a=tls-id:1
> 
> *** ERROR: invalid syntax for 'tls-id'
> *** Note: tls-id must be 20 chars or longer.
> 
> a=rtcp-mux
> a=rtcp:54610 IN IP4 203.0.113.141
> a=rtcp-rsize
> a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> a=candidate:0 1 UDP  2122194687 192.0.2.4 61665 typ host
> 
> *** ERROR: invalid syntax for 'candidate'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=candidate:1 1 UDP  1685987071 203.0.113.141 54609 typ srflx raddr
> 192.0.2.4 rport 61665
> 
> *** ERROR: invalid syntax for 'candidate'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=candidate:0 2 UDP 2122194687 192.0.2.4 61666 typ host
> a=candidate:1 2 UDP  1685987071 203.0.113.141 54610 typ srflx raddr
> 192.0.2.4 rport 61666
> 
> *** ERROR: invalid syntax for 'candidate'
> *** Note: Removing errant spaces fixes this problem.
> 
> m=video 62537 UDP/TLS/RTP/SAVPF 120
> c=IN IP4 203.0.113.141
> a=mid:video
> a=msid:ma tb
> a=sendrecv
> a=rtpmap:120 VP8/90000
> a=ice-ufrag:6550074c
> a=ice-pwd:74af08a068a28a397a4c3f31747d1ee34
> a=fingerprint:sha-256 19:E2:1C:3B:4B:9F:81:E6:B8:5C:F4:A5:A8:D8:73:04
> :BB:05:2F:70:9F:04:A9:0E:05:E9:26:33:E8:70:88:A2
> 
> *** ERROR: invalid syntax for 'fingerprint'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=setup:actpass
> a=tls-id:2
> 
> *** ERROR: invalid syntax for 'tls-id'
> *** Note: tls-id must be 20 chars or longer.
> 
> a=rtcp-mux
> a=rtcp:62538 IN IP4 203.0.113.141
> a=rtcp-rsize
> a=rtcp-fb:120 nack
> a=rtcp-fb:120 nack pli
> a=rtcp-fb:120 ccm fir
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> a=candidate:0 1 UDP  2122194687 192.0.2.4 61886 typ host
> 
> *** ERROR: invalid syntax for 'candidate'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=candidate:1 1 UDP  1685987071 203.0.113.141 62537 typ srflx raddr
> 192.0.2.4 rport 61886
> 
> *** ERROR: invalid syntax for 'candidate'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=candidate:0 2 2122194687 192.0.2.4 61888 typ host
> 
> *** ERROR: invalid syntax for 'candidate'
> *** Note: Adding 'UDP' fixes this problem.
> 
> a=candidate:1 2 UDP 1685987071 203.0.113.141 62538 typ srflx raddr
> 192.0.2.4 rport 61888
> 
> ==============================================================================
> 
> 5.2.8 SDP Offer
> ==============================================================================
> 
> v=0
> o=- 20518 0 IN IP4 0.0.0.0
> s=-
> t=0 0
> a=group:BUNDLE audio video data
> a=group:LS audio video
> a=ice-options:trickle
> m=audio 54609 UDP/TLS/RTP/SAVPF 109
> c=IN IP4 203.0.113.141
> a=msid:ma ta
> a=mid:audio
> a=sendrecv
> a=rtpmap:109 opus/48000/2
> a=maxptime:120
> a=ice-ufrag:074c6550
> a=ice-pwd:a28a397a4c3f31747d1ee3474af08a068
> a=fingerprint:sha-256 19:E2:1C:3B:4B:9F:81:E6:B8:5C:F4:A5:A8:D8:73:04
> :BB:05:2F:70:9F:04:A9:0E:05:E9:26:33:E8:70:88:A2
> 
> *** ERROR: invalid syntax for 'fingerprint'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=setup:actpass
> a=tls-id:1
> 
> *** ERROR: invalid syntax for 'tls-id'
> *** Note: tls-id must be 20 chars or longer.
> 
> a=rtcp-mux
> a=rtcp-mux-only
> a=rtcp-rsize
> a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> a=candidate:0 1 UDP  2122194687 192.0.2.4 61665 typ host
> 
> *** ERROR: invalid syntax for 'candidate'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=candidate:1 1 UDP  1685987071 203.0.113.141 54609 typ srflx raddr
> 192.0.2.4 rport 61665
> 
> *** ERROR: invalid syntax for 'candidate'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=end-of-candidates
> m=video 54609 UDP/TLS/RTP/SAVPF 120
> c=IN IP4 203.0.113.141
> a=mid:video
> a=msid:ma tb
> a=sendrecv
> a=rtpmap:120 VP8/90000
> a=rtcp-fb:120 nack
> a=rtcp-fb:120 nack pli
> a=rtcp-fb:120 ccm fir
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> m=application 54609 UDP/DTLS/SCTP webrtc-datachannel
> c=IN IP4 203.0.113.141
> a=mid:data
> a=sctp-port:5000
> a=max-message-size:100000
> a=sendrecv
> 
> ==============================================================================
> 
> 5.2.8 SDP Answer
> ==============================================================================
> 
> v=0
> o=- 16833 0 IN IP4 0.0.0.0
> s=-
> t=0 0
> a=group:BUNDLE audio video data
> a=group:LS audio video
> a=ice-options:trickle
> m=audio 49203 UDP/TLS/RTP/SAVPF 109
> c=IN IP4 203.0.113.77
> a=msid:ma ta
> a=mid:audio
> a=sendrecv
> a=rtpmap:109 opus/48000/2
> a=maxptime:120
> a=ice-ufrag:c300d85b
> a=ice-pwd:de4e99bd291c325921d5d47efbabd9a2
> a=fingerprint:sha-256 6B:8B:F0:65:5F:78:E2:51:3B:AC:6F:F3:3F:46:1B:35
> :DC:B8:5F:64:1A:24:C2:43:F0:A1:58:D0:A1:2C:19:08
> 
> *** ERROR: invalid syntax for 'fingerprint'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=setup:active
> a=tls-id:1
> 
> *** ERROR: invalid syntax for 'tls-id'
> *** Note: tls-id must be 20 chars or longer.
> 
> a=rtcp-mux
> a=rtcp-mux-only
> a=rtcp-rsize
> a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> a=candidate:0 1 UDP 2122194687 198.51.100.7 51556 typ host
> a=candidate:1 1 UDP 1685987071 203.0.113.77 49203 typ srflx raddr
> 198.51.100.7 rport 51556
> a=end-of-candidates
> m=video 49203 UDP/TLS/RTP/SAVPF 120
> c=IN IP4 203.0.113.77
> a=mid:video
> a=msid:ma tb
> a=sendrecv
> a=rtpmap:120 VP8/90000
> a=rtcp-fb:120 nack
> a=rtcp-fb:120 nack pli
> a=rtcp-fb:120 ccm fir
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> m=application 49203 UDP/DTLS/SCTP webrtc-datachannel
> c=IN IP4 203.0.113.77
> a=mid:data
> a=sctp-port:5000
> a=max-message-size:100000
> a=sendrecv
> 
> ==============================================================================
> 
> 5.2.10 SDP Offer
> ==============================================================================
> 
> v=0
> o=- 20518 0 IN IP4 0.0.0.0
> s=-
> t=0 0
> a=group:BUNDLE audio video
> a=group:LS audio video
> a=ice-options:trickle
> m=audio 54609 UDP/TLS/RTP/SAVPF 109
> c=IN IP4 203.0.113.141
> a=mid:audio
> a=msid:ma ta
> a=sendrecv
> a=rtpmap:109 opus/48000/2
> a=maxptime:120
> a=ice-ufrag:074c6550
> a=ice-pwd:a28a397a4c3f31747d1ee3474af08a068
> a=fingerprint:sha-256 19:E2:1C:3B:4B:9F:81:E6:B8:5C:F4:A5:A8:D8:73:04
> :BB:05:2F:70:9F:04:A9:0E:05:E9:26:33:E8:70:88:A2
> 
> *** ERROR: invalid syntax for 'fingerprint'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=setup:actpass
> a=tls-id:1
> 
> *** ERROR: invalid syntax for 'tls-id'
> *** Note: tls-id must be 20 chars or longer.
> 
> a=rtcp-mux
> a=rtcp-mux-only
> a=rtcp-rsize
> a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> a=candidate:0 1 UDP  2113667327 192.0.2.4 54609 typ host
> 
> *** ERROR: invalid syntax for 'candidate'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=end-of-candidates
> m=video 54609 UDP/TLS/RTP/SAVPF 120
> c=IN IP4 203.0.113.141
> a=mid:video
> a=msid:ma tb
> a=sendrecv
> a=rtpmap:120 VP8/90000
> a=rtcp-fb:120 nack
> a=rtcp-fb:120 nack pli
> a=rtcp-fb:120 ccm fir
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> m=application 10000 UDP/DTLS/SCTP webrtc-datachannel
> c=IN IP4 203.0.113.141
> a=mid:data
> a=sctp-port:5000
> a=max-message-size:100000
> a=sendrecv
> a=setup:actpass
> a=ice-ufrag:89819013
> a=ice-pwd:1747d1ee3474af08a068a28a397a4c3f3
> a=fingerprint:sha-256 29:E2:1C:3B:4B:9F:81:E6:B8:5C:F4:A5:A8:D8:73:04:
> BB:05:2F:70:9F:04:A9:0E:05:E9:26:33:E8:70:88:A2
> 
> *** ERROR: invalid syntax for 'fingerprint'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=candidate:0 1 UDP  2113667327 192.0.2.4 10000 typ host
> 
> *** ERROR: invalid syntax for 'candidate'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=end-of-candidates
> 
> ==============================================================================
> 
> 5.2.10 SDP Answer
> ==============================================================================
> 
> v=0
> o=-  16833 0 IN IP4 0.0.0.0
> s=-
> t=0 0
> a=group:BUNDLE audio video
> a=group:LS audio video
> a=ice-options:trickle
> m=audio 49203 UDP/TLS/RTP/SAVPF 109
> c=IN IP4 203.0.113.77
> a=mid:audio
> a=msid:ma ta
> a=sendrecv
> a=rtpmap:109 opus/48000/2
> a=maxptime:120
> a=ice-ufrag:c300d85b
> a=ice-pwd:de4e99bd291c325921d5d47efbabd9a2
> a=fingerprint:sha-256 6B:8B:F0:65:5F:78:E2:51:3B:AC:6F:F3:3F:46:1B:35
> :DC:B8:5F:64:1A:24:C2:43:F0:A1:58:D0:A1:2C:19:08
> 
> *** ERROR: invalid syntax for 'fingerprint'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=setup:active
> a=tls-id:1
> 
> *** ERROR: invalid syntax for 'tls-id'
> *** Note: tls-id must be 20 chars or longer.
> 
> a=rtcp-mux
> a=rtcp-mux-only
> a=rtcp-rsize
> a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> a=candidate:0 1 UDP 2113667327 198.51.100.7 49203 typ host
> a=end-of-candidates
> m=video 49203 UDP/TLS/RTP/SAVPF 120
> c=IN IP4 203.0.113.77
> a=mid:video
> a=msid:ma tb
> a=sendrecv
> a=rtpmap:120 VP8/90000
> a=rtcp-fb:120 nack
> a=rtcp-fb:120 nack pli
> a=rtcp-fb:120 ccm fir
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> m=application 20000 UDP/DTLS/SCTP webrtc-datachannel
> c=IN IP4 203.0.113.77
> a=mid:data
> a=sctp-port:5000
> a=max-message-size:100000
> a=setup:active
> a=sendrecv
> a=ice-ufrag:991Ca2a5e
> a=ice-pwd:921d5d47efbabd9a2de4e99bd291c325
> a=fingerprint:sha-256 7B:8B:F0:65:5F:78:E2:51:3B:AC:6F:F3:3F:46:1B:35:
> DC:B8:5F:64:1A:24:C2:43:F0:A1:58:D0:A1:2C:19:08
> 
> *** ERROR: invalid syntax for 'fingerprint'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=candidate:0 1 UDP 2113667327 198.51.100.7 20000 typ host
> a=end-of-candidates
> 
> ==============================================================================
> 
> 5.2.11 SDP Offer
> ==============================================================================
> 
> v=0
> o=- 20518 0 IN IP4 0.0.0.0
> s=-
> t=0 0
> a=group:BUNDLE audio
> a=ice-options:trickle
> m=audio 54609 UDP/TLS/RTP/SAVPF 109
> c=IN IP4 203.0.113.141
> a=mid:audio
> a=msid:ma ta
> a=sendrecv
> a=rtpmap:109 opus/48000/2
> a=maxptime:120
> a=ice-ufrag:074c6550
> a=ice-pwd:a28a397a4c3f31747d1ee3474af08a068
> a=fingerprint:sha-256 19:E2:1C:3B:4B:9F:81:E6:B8:5C:F4:A5:A8:D8:73:04
> :BB:05:2F:70:9F:04:A9:0E:05:E9:26:33:E8:70:88:A2
> 
> *** ERROR: invalid syntax for 'fingerprint'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=setup:actpass
> a=tls-id:1
> 
> *** ERROR: invalid syntax for 'tls-id'
> *** Note: tls-id must be 20 chars or longer.
> 
> a=rtcp-mux
> a=rtcp-mux-only
> a=rtcp-rsize
> a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> a=candidate:0 1 UDP  2113667327 192.0.2.4 61665 typ host
> 
> *** ERROR: invalid syntax for 'candidate'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=candidate:1 1 UDP  694302207 203.0.113.141 54609 typ srflx raddr
> 192.0.2.4 rport 61665
> 
> *** ERROR: invalid syntax for 'candidate'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=end-of-candidates
> 
> ==============================================================================
> 
> 5.2.10 SDP Answer
> ==============================================================================
> 
> v=0
> o=-  16833 0 IN IP4 0.0.0.0
> s=-
> t=0 0
> a=group:BUNDLE audio
> a=ice-options:trickle
> m=audio 49203 UDP/TLS/RTP/SAVPF 109
> c=IN IP4 203.0.113.77
> a=mid:audio
> a=msid:ma ta
> a=sendrecv
> a=rtpmap:109 opus/48000/2
> a=maxptime:120
> a=ice-ufrag:c300d85b
> a=ice-pwd:de4e99bd291c325921d5d47efbabd9a2
> a=fingerprint:sha-256 6B:8B:F0:65:5F:78:E2:51:3B:AC:6F:F3:3F:46:1B:35
> :DC:B8:5F:64:1A:24:C2:43:F0:A1:58:D0:A1:2C:19:08
> 
> *** ERROR: invalid syntax for 'fingerprint'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=setup:active
> a=tls-id:1
> 
> *** ERROR: invalid syntax for 'tls-id'
> *** Note: tls-id must be 20 chars or longer.
> 
> a=rtcp-mux
> a=rtcp-mux-only
> a=rtcp-rsize
> a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> a=candidate:0 1 UDP 2113667327 198.51.100.7 51556 typ host
> a=candidate:1 1 UDP 1694302207 203.0.113.77 49203 typ srflx raddr
> 198.51.100.7 rport 51556
> a=end-of-candidates
> 
> ==============================================================================
> 
> 5.2.11 SDP Updated Offer
> ==============================================================================
> 
> v=0
> o=- 20518 1 IN IP4 0.0.0.0
> s=-
> t=0 0
> a=group:BUNDLE audio video
> a=group:LS audio video
> a=ice-options:trickle
> m=audio 54609 UDP/TLS/RTP/SAVPF 109
> c=IN IP4 203.0.113.141
> a=mid:audio
> a=msid:ma ta
> a=sendrecv
> a=rtpmap:109 opus/48000/2
> a=maxptime:120
> a=ice-ufrag:074c6550
> a=ice-pwd:a28a397a4c3f31747d1ee3474af08a068
> a=fingerprint:sha-256 19:E2:1C:3B:4B:9F:81:E6:B8:5C:F4:A5:A8:D8:73:04
> :BB:05:2F:70:9F:04:A9:0E:05:E9:26:33:E8:70:88:A2
> 
> *** ERROR: invalid syntax for 'fingerprint'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=setup:actpass
> a=tls-id:1
> 
> *** ERROR: invalid syntax for 'tls-id'
> *** Note: tls-id must be 20 chars or longer.
> 
> a=rtcp-mux
> a=rtcp-mux-only
> a=rtcp-rsize
> a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> a=candidate:0 1 UDP  2113667327 192.0.2.4 61665 typ host
> 
> *** ERROR: invalid syntax for 'candidate'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=candidate:1 1 UDP  694302207 203.0.113.141 54609 typ srflx raddr
> 192.0.2.4 rport 61665
> 
> *** ERROR: invalid syntax for 'candidate'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=end-of-candidates
> m=video 54609 UDP/TLS/RTP/SAVPF 120
> c=IN IP4 203.0.113.141
> a=mid:video
> a=msid:ma tb
> a=sendrecv
> a=rtpmap:120 VP8/90000
> a=rtcp-fb:120 nack
> a=rtcp-fb:120 nack pli
> a=rtcp-fb:120 ccm fir
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> 
> ==============================================================================
> 
> 5.2.11 SDP Updated Answer
> ==============================================================================
> 
> v=0
> o=-  16833 1 IN IP4 0.0.0.0
> s=-
> t=0 0
> a=group:BUNDLE audio video
> a=group:LS audio video
> a=ice-options:trickle
> m=audio 49203 UDP/TLS/RTP/SAVPF 109
> c=IN IP4 203.0.113.77
> a=mid:audio
> a=msid:ma ta
> a=sendrecv
> a=rtpmap:109 opus/48000/2
> a=maxptime:120
> a=ice-ufrag:c300d85b
> a=ice-pwd:de4e99bd291c325921d5d47efbabd9a2
> a=fingerprint:sha-256 6B:8B:F0:65:5F:78:E2:51:3B:AC:6F:F3:3F:46:1B:35
> :DC:B8:5F:64:1A:24:C2:43:F0:A1:58:D0:A1:2C:19:08
> 
> *** ERROR: invalid syntax for 'fingerprint'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=setup:active
> a=tls-id:1
> 
> *** ERROR: invalid syntax for 'tls-id'
> *** Note: tls-id must be 20 chars or longer.
> 
> a=rtcp-mux
> a=rtcp-mux-only
> a=rtcp-rsize
> a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> a=candidate:0 1 UDP 2113667327 198.51.100.7 51556 typ host
> a=candidate:1 1 UDP 1694302207 203.0.113.77 49203 typ srflx raddr
> 198.51.100.7 rport 51556
> a=end-of-candidates
> m=video 49203 UDP/TLS/RTP/SAVPF 120
> c=IN IP4 203.0.113.77
> a=mid:video
> a=msid:ma tb
> a=sendrecv
> a=rtpmap:120 VP8/90000
> a=rtcp-fb:120 nack
> a=rtcp-fb:120 nack pli
> a=rtcp-fb:120 ccm fir
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> 
> ==============================================================================
> 
> 5.3.1 SDP Offer
> ==============================================================================
> 
> v=0
> o=- 20519 0 IN IP4 0.0.0.0
> s=-
> t=0 0
> a=group:BUNDLE m0 m1 m2
> a=group:LS m0 m1
> a=ice-options:trickle
> m=audio 54609 UDP/TLS/RTP/SAVPF 109
> c=IN IP4 203.0.113.141
> a=mid:m0
> a=msid:ma ta
> a=sendonly
> a=rtpmap:109 opus/48000/2
> a=maxptime:120
> a=ice-ufrag:074c6550
> a=ice-pwd:a28a397a4c3f31747d1ee3474af08a068
> a=fingerprint:sha-256 19:E2:1C:3B:4B:9F:81:E6:B8:5C:F4:A5:A8:D8:73:04
> :BB:05:2F:70:9F:04:A9:0E:05:E9:26:33:E8:70:88:A2
> 
> *** ERROR: invalid syntax for 'fingerprint'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=setup:actpass
> a=tls-id:1
> 
> *** ERROR: invalid syntax for 'tls-id'
> *** Note: tls-id must be 20 chars or longer.
> 
> a=rtcp-mux
> a=rtcp-rsize
> a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> a=candidate:0 1 UDP  2113667327 192.0.2.4 61665 typ host
> 
> *** ERROR: invalid syntax for 'candidate'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=candidate:1 1 UDP  694302207 203.0.113.141 54609 typ srflx raddr
> 192.0.2.4 rport 61665
> 
> *** ERROR: invalid syntax for 'candidate'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=end-of-candidates
> m=video 0 UDP/TLS/RTP/SAVPF 98 100
> c=IN IP4 203.0.113.141
> a=bundle-only
> a=mid:m1
> a=msid:ma tb
> a=sendonly
> a=rtpmap:98 VP8/90000
> a=fmtp:98 max-fr=30
> a=rtpmap:100 VP8/90000
> a=fmtp:100 max-fr=15
> a=rtcp-fb:* nack
> a=rtcp-fb:* nack pli
> a=rtcp-fb:* ccm fir
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> a=extmap:3 a=extmap:3 urn:ietf:params:rtp-hdrext:sdes:rtp-stream-id
> 
> *** ERROR: invalid syntax for 'extmap'
> *** Note: Removing duplicate 'a=' fixes this.
> 
> a=rid:1 send pt=98;max-width=1280;max-height=720;
> 
> *** ERROR: invalid syntax for 'rid'
> *** Note: Removing trailing semicolon fixes this.
> 
> a=rid:2 send pt=100;max-width=640;max-height=480;
> 
> *** ERROR: invalid syntax for 'rid'
> *** Note: Removing trailing semicolon fixes this.
> 
> a=simulcast:send 1;~2
> m=video 0 UDP/TLS/RTP/SAVPF 101 102
> c=IN IP4 203.0.113.141
> a=bundle-only
> a=mid:m2
> a=msid:ma tc
> a=sendonly
> a=rtpmap:101 H264/90000
> a=rtpmap:102 H264/90000
> a=fmtp:101 profile-level-id=42401f;packetization-mode=0;max-fr=30
> a=fmtp:102 profile-level-id=42401f;packetization-mode=1;max-fr=15
> a=rtcp-fb:* nack
> a=rtcp-fb:* nack pli
> a=rtcp-fb:* ccm fir
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> a=extmap:3 a=extmap:3 urn:ietf:params:rtp-hdrext:sdes:rtp-stream-id
> 
> *** ERROR: invalid syntax for 'extmap'
> *** Note: Removing duplicate 'a=' fixes this.
> 
> a=rid:3 send pt=101;max-width=1280;max-height=720;
> 
> *** ERROR: invalid syntax for 'rid'
> *** Note: Removing trailing semicolon fixes this.
> 
> a=rid:4 send pt=102;max-width=640;max-height=360;
> 
> *** ERROR: invalid syntax for 'rid'
> *** Note: Removing trailing semicolon fixes this.
> 
> a=simulcast:send 3;4
> 
> ==============================================================================
> 
> 5.3.1 SDP Answer
> ==============================================================================
> 
> v=0
> o=- 20519 0 IN IP4 0.0.0.0
> s=-
> t=0 0
> a=group:BUNDLE m0 m1 m2
> a=group:LS m0 m1
> a=ice-options:trickle
> m=audio 49203 UDP/TLS/RTP/SAVPF 109
> c=IN IP4 203.0.113.77
> a=mid:m0
> a=msid:ma ta
> a=recvonly
> a=rtpmap:109 opus/48000/2
> a=maxptime:120
> a=ice-ufrag:c300d85b
> a=ice-pwd:de4e99bd291c325921d5d47efbabd9a2
> a=fingerprint:sha-256 6B:8B:F0:65:5F:78:E2:51:3B:AC:6F:F3:3F:46:1B:35
> :DC:B8:5F:64:1A:24:C2:43:F0:A1:58:D0:A1:2C:19:08
> 
> *** ERROR: invalid syntax for 'fingerprint'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=setup:active
> a=tls-id:1
> 
> *** ERROR: invalid syntax for 'tls-id'
> *** Note: tls-id must be 20 chars or longer.
> 
> a=rtcp-mux
> a=rtcp-rsize
> a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> a=candidate:0 1 UDP  2113667327 198.51.100.7 61665 typ host
> 
> *** ERROR: invalid syntax for 'candidate'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=candidate:1 1 UDP  694302207 203.0.113.77 49203 typ srflx raddr
> 198.51.100.7 rport 61665
> 
> *** ERROR: invalid syntax for 'candidate'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=end-of-candidates
> m=video 49203 UDP/TLS/RTP/SAVPF 98 100
> c=IN IP4 203.0.113.77
> a=mid:m1
> a=msid:ma tb
> a=recvonly
> a=rtpmap:98 VP8/90000
> a=rtpmap:100 VP8/90000
> a=fmtp:98 max-fr=30
> a=fmtp:100 max-fr=15
> a=rtcp-fb:* nack
> a=rtcp-fb:* nack pli
> a=rtcp-fb:* ccm fir
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> a=extmap:3 a=extmap:3 urn:ietf:params:rtp-hdrext:sdes:rtp-stream-id
> 
> *** ERROR: invalid syntax for 'extmap'
> *** Note: Removing duplicate 'a=' fixes this.
> 
> a=rid:1 recv pt=98;max-width=1280;max-height=720;
> 
> *** ERROR: invalid syntax for 'rid'
> *** Note: Removing trailing semicolon fixes this.
> 
> a=rid:2 recv pt=100;max-width=640;max-height=480;
> 
> *** ERROR: invalid syntax for 'rid'
> *** Note: Removing trailing semicolon fixes this.
> 
> a=simulcast:recv 1;2
> m=video 49203 UDP/TLS/RTP/SAVPF 101 102
> c=IN IP4 203.0.113.77
> a=mid:m2
> a=msid:ma tc
> a=recvonly
> a=rtpmap:101 H264/90000
> a=rtpmap:102 H264/90000
> a=fmtp:101 profile-level-id=42401f;packetization-mode=1;max-fr=30
> a=fmtp:102 profile-level-id=42401f;packetization-mode=1;max-fr=15
> a=rtcp-fb:* nack
> a=rtcp-fb:* nack pli
> a=rtcp-fb:* ccm fir
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> a=extmap:3 a=extmap:3 urn:ietf:params:rtp-hdrext:sdes:rtp-stream-id
> 
> *** ERROR: invalid syntax for 'extmap'
> *** Note: Removing duplicate 'a=' fixes this.
> 
> a=rid:3 recv pt=101;max-width=1280;max-height=720;
> 
> *** ERROR: invalid syntax for 'rid'
> *** Note: Removing trailing semicolon fixes this.
> 
> a=rid:4 recv pt=102;max-width=640;max-height=360;
> 
> *** ERROR: invalid syntax for 'rid'
> *** Note: Removing trailing semicolon fixes this.
> 
> a=simulcast:recv 3;4
> 
> ==============================================================================
> 
> 5.3.2 SDP Offer with SVC
> ==============================================================================
> 
> v=0
> o=- 20519 0 IN IP4 0.0.0.0
> s=-
> t=0 0
> a=group:BUNDLE m0 m1
> a=group:LS m0 m1
> a=ice-options:trickle
> m=audio 54609 UDP/TLS/RTP/SAVPF 109
> c=IN IP4 203.0.113.141
> a=mid:m0
> a=msid:ma ta
> a=sendonly
> a=rtpmap:109 opus/48000/2
> a=maxptime:120
> a=ice-ufrag:074c6550
> a=ice-pwd:a28a397a4c3f31747d1ee3474af08a068
> a=fingerprint:sha-256 19:E2:1C:3B:4B:9F:81:E6:B8:5C:F4:A5:A8:D8:73:04
> :BB:05:2F:70:9F:04:A9:0E:05:E9:26:33:E8:70:88:A2
> 
> *** ERROR: invalid syntax for 'fingerprint'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=setup:actpass
> a=tls-id:1
> 
> *** ERROR: invalid syntax for 'tls-id'
> *** Note: tls-id must be 20 chars or longer.
> 
> a=rtcp-mux
> a=rtcp-rsize
> a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> a=candidate:0 1 UDP  2113667327 192.0.2.4 61665 typ host
> 
> *** ERROR: invalid syntax for 'candidate'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=candidate:1 1 UDP  694302207 203.0.113.141 54609 typ srflx raddr
> 192.0.2.4 rport 61665
> 
> *** ERROR: invalid syntax for 'candidate'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=end-of-candidates
> m=video 0 UDP/TLS/RTP/SAVPF 96 97 100
> c=IN IP4 203.0.113.141
> a=bundle-only
> a=mid:m1
> a=msid:ma tb
> a=sendonly
> a=rtpmap:96 H264/90000
> a=fmtp:96 profile-level-id=4d0028;
> packetization-mode=1;max-fr=30;max-fs=8040
> a=rtpmap:97 H264/90000
> a=fmtp:97 profile-level-id=4d0028;packetization-mode=1;
> max-fr=15;max-fs=1200
> a=rtpmap:100 H264-SVC/90000
> a=fmtp:100 profile-level-id=4d0028;packetization-mode=1;
> max-fr=30;max-fs=8040
> a=depend:100 lay m1:96,97
> a=rtcp-fb:* nack
> a=rtcp-fb:* nack pli
> a=rtcp-fb:* ccm fir
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> 
> ==============================================================================
> 
> 5.3.2 SDP Answer with SVC
> ==============================================================================
> 
> v=0
> o=- 20519 0 IN IP4 0.0.0.0
> s=-
> t=0 0
> a=group:BUNDLE m0 m1
> a=group:LS m0 m1
> a=ice-options:trickle
> m=audio 49203 UDP/TLS/RTP/SAVPF 109
> c=IN IP4 203.0.113.77
> a=mid:m0
> a=msid:ma ta
> a=recvonly
> a=rtpmap:109 opus/48000/2
> a=maxptime:120
> a=ice-ufrag:074c6550
> a=ice-pwd:a28a397a4c3f31747d1ee3474af08a068
> a=fingerprint:sha-256 6B:8B:F0:65:5F:78:E2:51:3B:AC:6F:F3:3F:46:1B:35
> :DC:B8:5F:64:1A:24:C2:43:F0:A1:58:D0:A1:2C:19:08
> 
> *** ERROR: invalid syntax for 'fingerprint'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=setup:active
> a=tls-id:1
> 
> *** ERROR: invalid syntax for 'tls-id'
> *** Note: tls-id must be 20 chars or longer.
> 
> a=rtcp-mux
> a=rtcp-rsize
> a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> a=candidate:0 1 UDP 2113667326 198.51.100.7 51556 typ host
> a=candidate:1 1 UDP  1694302206 203.0.113.77 49203 typ srflx raddr
> 198.51.100.7 rport 51556
> 
> *** ERROR: invalid syntax for 'candidate'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=end-of-candidates
> m=video 49203 UDP/TLS/RTP/SAVPF 96 100
> c=IN IP4 203.0.113.77
> a=mid:m1
> a=msid:ma tb
> a=recvonly
> a=rtpmap:96 H264/90000
> a=fmtp:96 profile-level-id=4d0028;packetization-mode=1;
> max-fr=30;max-fs=8040
> a=rtpmap:100 H264-SVC/90000
> a=fmtp:100 profile-level-id=4d0028;packetization-mode=1;
> max-fr=30;max-fs=8040
> a=depend:100 lay m1:96
> a=rtcp-fb:* nack
> a=rtcp-fb:* nack pli
> a=rtcp-fb:* ccm fir
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> 
> ==============================================================================
> 
> 5.3.5 SDP Offer
> ==============================================================================
> 
> v=0
> o=- 20519 0 IN IP4 0.0.0.0
> s=-
> t=0 0
> a=group:BUNDLE m0 m1
> a=group:LS m0 m1
> a=ice-options:trickle
> m=audio 54609 UDP/TLS/RTP/SAVPF 109
> c=IN IP4 203.0.113.141
> a=mid:m0
> a=msid:ma ta
> a=sendonly
> a=rtpmap:109 opus/48000/2
> a=maxptime:120
> a=ice-ufrag:074c6550
> a=ice-pwd:a28a397a4c3f31747d1ee3474af08a068
> a=fingerprint:sha-256 19:E2:1C:3B:4B:9F:81:E6:B8:5C:F4:A5:A8:D8:73:04
> :BB:05:2F:70:9F:04:A9:0E:05:E9:26:33:E8:70:88:A2
> 
> *** ERROR: invalid syntax for 'fingerprint'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=setup:actpass
> a=rtcp-mux
> a=tls-id:1
> 
> *** ERROR: invalid syntax for 'tls-id'
> *** Note: tls-id must be 20 chars or longer.
> 
> a=rtcp-rsize
> a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> a=candidate:0 1 UDP  2113667327 192.0.2.4 61665 typ host
> 
> *** ERROR: invalid syntax for 'candidate'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=candidate:1 1 UDP  694302207 203.0.113.141 54609 typ srflx raddr
> 192.0.2.4 rport 61665
> 
> *** ERROR: invalid syntax for 'candidate'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=end-of-candidates
> m=video 0 UDP/TLS/RTP/SAVPF 98 100 101 103
> c=IN IP4 203.0.113.141
> a=bundle-only
> a=mid:m1
> a=msid:ma tb
> a=sendonly
> a=rtpmap:98 VP8/90000
> a=rtpmap:100 VP8/90000
> a=rtpmap:101 flexfec/90000
> a=rtpmap:103 flexfec/90000
> a=fmtp:98 max-fr=30;max-fs=8040
> a=fmtp:100 max-fr=15;max-fs=1200
> a=fmtp:101 L=5; D=10; ToP=2; repair-window=200000
> a=fmtp:103 L=5; D=10; ToP=2; repair-window=200000
> a=rtcp-fb:* nack
> a=rtcp-fb:* nack pli
> a=rtcp-fb:* ccm fir
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> a=extmap:3 a=extmap:3 urn:ietf:params:rtp-hdrext:sdes:rtp-stream-id
> 
> *** ERROR: invalid syntax for 'extmap'
> *** Note: Removing duplicate 'a=' fixes this.
> 
> a=rid:1 send pt=98;
> 
> *** ERROR: invalid syntax for 'rid'
> *** Note: Removing trailing semicolon fixes this.
> 
> a=rid:2 send pt=100;
> 
> *** ERROR: invalid syntax for 'rid'
> *** Note: Removing trailing semicolon fixes this.
> 
> a=simulcast:send 1;2
> 
> ==============================================================================
> 
> 5.3.5 SDP Answer
> ==============================================================================
> 
> v=0
> o=- 20519 0 IN IP4 0.0.0.0
> s=-
> t=0 0
> a=group:BUNDLE m0 m1
> a=group:LS m0 m1
> a=ice-options:trickle
> m=audio 49203 UDP/TLS/RTP/SAVPF 109
> c=IN IP4 203.0.113.77
> a=mid:m0
> a=msid:ma ta
> a=recvonly
> a=rtpmap:109 opus/48000/2
> a=maxptime:120
> a=ice-ufrag:074c6550
> a=ice-pwd:a28a397a4c3f31747d1ee3474af08a068
> a=fingerprint:sha-256 6B:8B:F0:65:5F:78:E2:51:3B:AC:6F:F3:3F:46:1B:35
> :DC:B8:5F:64:1A:24:C2:43:F0:A1:58:D0:A1:2C:19:08
> 
> *** ERROR: invalid syntax for 'fingerprint'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=setup:active
> a=tls-id:1
> 
> *** ERROR: invalid syntax for 'tls-id'
> *** Note: tls-id must be 20 chars or longer.
> 
> a=rtcp-mux
> a=rtcp-rsize
> a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> a=candidate:0 1 UDP 2113667326 198.51.100.7 51556 typ host
> a=candidate:1 1 UDP  1694302206 203.0.113.77 49203 typ srflx raddr
> 198.51.100.7 rport 51556
> 
> *** ERROR: invalid syntax for 'candidate'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=end-of-candidates
> m=video 49203 UDP/TLS/RTP/SAVPF 98 100 101 103
> c=IN IP4 203.0.113.77
> a=mid:m1
> a=msid:ma tb
> a=recvonly
> a=rtpmap:98 VP8/90000
> a=rtpmap:100 VP8/90000
> a=rtpmap:101 flexfec/90000
> a=rtpmap:103 flexfec/90000
> a=fmtp:98 max-fr=30;max-fs=8040
> a=fmtp:100 max-fr=15;max-fs=1200
> a=fmtp:101 L=5; D=10; ToP=2; repair-window=200000
> a=fmtp:103 L=5; D=10; ToP=2; repair-window=200000
> a=rtcp-fb:* nack
> a=rtcp-fb:* nack pli
> a=rtcp-fb:* ccm fir
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> a=extmap:3 a=extmap:3 urn:ietf:params:rtp-hdrext:sdes:rtp-stream-id
> 
> *** ERROR: invalid syntax for 'extmap'
> *** Note: Removing duplicate 'a=' fixes this.
> 
> a=rid:1 recv pt=98;
> 
> *** ERROR: invalid syntax for 'rid'
> *** Note: Removing trailing semicolon fixes this.
> 
> a=rid:2 recv pt=100;
> 
> *** ERROR: invalid syntax for 'rid'
> *** Note: Removing trailing semicolon fixes this.
> 
> a=simulcast:recv 1;2
> 
> ==============================================================================
> 
> 5.4.1 SDP Offer
> ==============================================================================
> 
> v=0
> o=- 20518 0 IN IP4 0.0.0.0
> s=-
> t=0 0
> a=group:BUNDLE audio
> a=ice-options:trickle
> m=audio 54609 UDP/TLS/RTP/SAVPF 109 0 8
> c=IN IP4 203.0.113.141
> a=mid:audio
> a=msid:ma ta
> a=sendrecv
> a=rtpmap:109 opus/48000/2
> a=rtpmap:0 PCMU/8000
> a=rtpmap:8 PCMA/8000
> a=maxptime:120
> a=ice-ufrag:074c6550
> a=ice-pwd:a28a397a4c3f31747d1ee3474af08a068
> a=fingerprint:sha-256 19:E2:1C:3B:4B:9F:81:E6:B8:5C:F4:A5:A8:D8:73:04
> :BB:05:2F:70:9F:04:A9:0E:05:E9:26:33:E8:70:88:A2
> 
> *** ERROR: invalid syntax for 'fingerprint'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=setup:actpass
> a=tls-id:1
> 
> *** ERROR: invalid syntax for 'tls-id'
> *** Note: tls-id must be 20 chars or longer.
> 
> a=rtcp-mux
> a=rtcp-rsize
> a=rtcp-fb:* nack
> a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> a=candidate:0 1 UDP  2113667327 192.0.2.4 61665 typ host
> 
> *** ERROR: invalid syntax for 'candidate'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=candidate:1 1 UDP  694302207 203.0.113.141 54609 typ srflx raddr
> 192.0.2.4 rport 61665
> 
> *** ERROR: invalid syntax for 'candidate'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=end-of-candidates
> 
> ==============================================================================
> 
> 5.4.1 SDP Answer
> ==============================================================================
> 
> v=0
> o=-  16833 0 IN IP4 0.0.0.0
> s=-
> t=0 0
> a=group:BUNDLE audio
> a=ice-options:trickle
> m=audio 49203 UDP/TLS/RTP/SAVPF 109 0 98
> c=IN IP4 203.0.113.77
> a=mid:audio
> a=msid:ma ta
> a=sendrecv
> a=rtpmap:109 opus/48000/2
> a=rtpmap:0 PCMU/8000
> a=rtpmap:0 PCMA/8000
> a=maxptime:120
> a=ice-ufrag:c300d85b
> a=ice-pwd:de4e99bd291c325921d5d47efbabd9a2
> a=fingerprint:sha-256 6B:8B:F0:65:5F:78:E2:51:3B:AC:6F:F3:3F:46:1B:35
> :DC:B8:5F:64:1A:24:C2:43:F0:A1:58:D0:A1:2C:19:08
> 
> *** ERROR: invalid syntax for 'fingerprint'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=setup:active
> a=tls-id:1
> 
> *** ERROR: invalid syntax for 'tls-id'
> *** Note: tls-id must be 20 chars or longer.
> 
> a=rtcp-mux
> a=rtcp-rsize
> a=rtcp-fb:* nack
> a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> a=candidate:0 1 UDP 2113667327 198.51.100.7 51556 typ host
> a=candidate:1 1 UDP 1694302207 203.0.113.77 49203 typ srflx raddr
> 198.51.100.7 rport 51556
> a=end-of-candidates
> 
> ==============================================================================
> 
> 5.4.2 SDP Offer
> ==============================================================================
> 
> v=0
> o=- 20518 0 IN IP4 0.0.0.0
> s=-
> t=0 0
> a=group:BUNDLE audio
> a=ice-options:trickle
> m=audio 54609 UDP/TLS/RTP/SAVPF 109 0 8
> c=IN IP4 203.0.113.141
> a=mid:audio
> a=msid:ma ta
> a=sendrecv
> a=rtpmap:109 opus/48000/2
> a=rtpmap:0 PCMU/8000
> a=rtpmap:0 PCMA/8000
> a=maxptime:120
> a=ice-ufrag:074c6550
> a=ice-pwd:a28a397a4c3f31747d1ee3474af08a068
> a=fingerprint:sha-256 19:E2:1C:3B:4B:9F:81:E6:B8:5C:F4:A5:A8:D8:73:04
> :BB:05:2F:70:9F:04:A9:0E:05:E9:26:33:E8:70:88:A2
> 
> *** ERROR: invalid syntax for 'fingerprint'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=setup:actpass
> a=tls-id:1
> 
> *** ERROR: invalid syntax for 'tls-id'
> *** Note: tls-id must be 20 chars or longer.
> 
> a=rtcp-mux
> a=rtcp-rsize
> a=rtcp-fb:* nack
> a=extmap:1/recvonly urn:ietf:params:rtp-hdrext:csrc-audio-level
> a=extmap:2 urn:ietf:params:rtp-hdrext:ssrc-audio-level
> a=extmap:3 urn:ietf:params:rtp-hdrext:sdes:mid
> a=candidate:0 1 UDP  2113667327 192.0.2.4 61665 typ host
> 
> *** ERROR: invalid syntax for 'candidate'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=candidate:1 1 UDP  694302207 203.0.113.141 54609 typ srflx raddr
> 192.0.2.4 rport 61665
> 
> *** ERROR: invalid syntax for 'candidate'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=end-of-candidates
> 
> ==============================================================================
> 
> 5.4.2 SDP Answer
> ==============================================================================
> 
> v=0
> o=-  16833 0 IN IP4 0.0.0.0
> s=-
> t=0 0
> a=group:BUNDLE audio
> a=ice-options:trickle
> m=audio 49203 UDP/TLS/RTP/SAVPF 109 0 98
> c=IN IP4 203.0.113.77
> a=mid:audio
> a=msid:ma ta
> a=sendrecv
> a=rtpmap:109 opus/48000/2
> a=rtpmap:0 PCMU/8000
> a=rtpmap:0 PCMA/8000
> a=maxptime:120
> a=ice-ufrag:c300d85b
> a=ice-pwd:de4e99bd291c325921d5d47efbabd9a2
> a=fingerprint:sha-256 6B:8B:F0:65:5F:78:E2:51:3B:AC:6F:F3:3F:46:1B:35
> :DC:B8:5F:64:1A:24:C2:43:F0:A1:58:D0:A1:2C:19:08
> 
> *** ERROR: invalid syntax for 'fingerprint'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=setup:active
> a=tls-id:1
> 
> *** ERROR: invalid syntax for 'tls-id'
> *** Note: tls-id must be 20 chars or longer.
> 
> a=rtcp-mux
> a=rtcp-rsize
> a=rtcp-fb:* nack
> a=extmap:1/sendonly urn:ietf:params:rtp-hdrext:csrc-audio-level
> a=extmap:2 urn:ietf:params:rtp-hdrext:sdes:mid
> a=candidate:0 1 UDP 2113667327 198.51.100.7 51556 typ host
> a=candidate:1 1 UDP 1694302207 203.0.113.77 49203 typ srflx raddr
> 198.51.100.7 rport 51556
> a=end-of-candidates
> 
> ==============================================================================
> 
> 5.4.3 SDP Answer
> ==============================================================================
> 
> v=0
> o=- 20519 0 IN IP4 0.0.0.0
> s=-
> t=0 0
> m=audio 49203 UDP/TLS/RTP/SAVPF 109
> c=IN IP4 203.0.113.141
> a=rtcp:60065 IN IP4 203.0.113.141
> a=sendrecv
> a=rtpmap:109 opus/48000/2
> a=maxptime:120
> a=ice-ufrag:ufrag:c300d85b
> 
> *** ERROR: invalid syntax for 'ice-ufrag'
> *** Note: Removing errant 'ufrag:' fixes this.
> 
> a=ice-pwd:de4e99bd291c325921d5d47efbabd9a2
> a=fingerprint:sha-256 6B:8B:F0:65:5F:78:E2:51:3B:AC:6F:F3:3F:46:1B:35
> :DC:B8:5F:64:1A:24:C2:43:F0:A1:58:D0:A1:2C:19:08
> 
> *** ERROR: invalid syntax for 'fingerprint'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=setup:active
> a=rtcp-rsize
> a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level
> a=candidate:0 1 UDP  2113667327 198.51.100.7 51556 typ host
> 
> *** ERROR: invalid syntax for 'candidate'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=candidate:1 1 UDP  694302207 203.0.113.77 49203 typ srflx raddr
> 198.51.100.7 rport 51556
> 
> *** ERROR: invalid syntax for 'candidate'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=candidate:0 2 UDP 2113667326 198.51.100.7 51558 typ host
> a=candidate:1 2 UDP  1694302206 203.0.113.77 60065 typ srflx raddr
> 198.51.100.7 rport 51558
> 
> *** ERROR: invalid syntax for 'candidate'
> *** Note: Removing errant spaces fixes this problem.
> 
> m=video 0 UDP/TLS/RTP/SAVPF 98 100
> m=video 0 UDP/TLS/RTP/SAVPF 98 100
> 
> ==============================================================================
> 
> 5.4.5 SDP Offer
> ==============================================================================
> 
> v=0
> o=- 20518 0 IN IP4 0.0.0.0
> s=-
> t=0 0
> a=ice-ufrag:074c6550
> a=ice-pwd:a28a397a4c3f31747d1ee3474af08a068
> a=rtcp-rsize
> m=audio 54732 RTP/AVP 109
> 
> *** ERROR: invalid syntax for 'm'
> *** Note: Using the correct transport value fixes this.
> 
> c=IN IP4 203.0.113.141
> a=fingerprint:sha-256 19:E2:1C:3B:4B:9F:81:E6:B8:5C:F4:A5:A8:D8:73:04
> :BB:05:2F:70:9F:04:A9:0E:05:E9:26:33:E8:70:88:A2
> 
> *** ERROR: invalid syntax for 'fingerprint'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=rtpmap:109 opus/48000
> a=ptime:20
> a=sendrecv
> a=rtcp-mux
> a=rtcp:64678 IN IP4 203.0.113.141
> a=candidate:0 1 UDP  2113667327 192.0.2.4 54732 typ host
> 
> *** ERROR: invalid syntax for 'candidate'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=candidate:1 1 UDP  694302207 203.0.113.141 54732 typ srflx raddr
> 192.0.2.4 rport 54732
> 
> *** ERROR: invalid syntax for 'candidate'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=candidate:0 2 UDP 2113667326 192.0.2.4 64678 typ host
> a=candidate:1 2 UDP  1694302206 203.0.113.141 64678 typ srflx raddr
> 192.0.2.4 rport 64678
> 
> *** ERROR: invalid syntax for 'candidate'
> *** Note: Removing errant spaces fixes this problem.
> 
> m=video 62445 RTP/AVP 120
> 
> *** ERROR: invalid syntax for 'm'
> *** Note: Using the correct transport value fixes this.
> 
> c=IN IP4 203.0.113.141
> a=fingerprint:sha-256 DC:B8:5F:64:1A:24:C2:43:F0:A1:58:D0:A1:2C:19:08
> :6B:8B:F0:65:5F:78:E2:51:3B:AC:6F:F3:3F:46:1B:35
> 
> *** ERROR: invalid syntax for 'fingerprint'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=rtpmap:120 VP8/90000
> a=sendrecv
> a=rtcp-mux
> a=rtcp:54721 IN IP4 203.0.113.141
> a=candidate:0 1 UDP  2113667327 192.0.2.4 62445 typ host
> 
> *** ERROR: invalid syntax for 'candidate'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=candidate:1 1 UDP  1694302207 203.0.113.141 62537 typ srflx raddr
> 192.0.2.4 rport 62445
> 
> *** ERROR: invalid syntax for 'candidate'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=candidate:0 2 2113667326 192.0.2.4 54721 typ host
> 
> *** ERROR: invalid syntax for 'candidate'
> *** Note: Adding 'UDP' fixes this problem.
> 
> a=candidate:1 2 UDP 1694302206 203.0.113.141 54721 typ srflx raddr
> 192.0.2.4 rport 54721
> a=rtcp-fb:120 nack pli
> a=rtcp-fb:120 ccm fir
> 
> ==============================================================================
> 
> 5.4.5 SDP Answer
> ==============================================================================
> 
> v=0
> o=-  16833 0 IN IP4 0.0.0.0
> s=-
> t=0 0
> m=audio 49203 RTP/AVP 109
> 
> *** ERROR: invalid syntax for 'm'
> *** Note: Using the correct transport value fixes this.
> 
> c=IN IP4 203.0.113.77
> a=rtpmap:109 opus/48000
> a=ptime:20
> a=sendrecv
> a=ice-ufrag:c300d85b
> a=ice-pwd:de4e99bd291c325921d5d47efbabd9a2
> a=fingerprint:sha-256 BB:05:2F:70:9F:04:A9:0E:05:E9:26:33:E8:70:88:A2
> :19:E2:1C:3B:4B:9F:81:E6:B8:5C:F4:A5:A8:D8:73:04
> 
> *** ERROR: invalid syntax for 'fingerprint'
> *** Note: Removing errant spaces fixes this problem.
> 
> a=rtcp-mux
> a=candidate:0 1 UDP 2113667327 198.51.100.7 49203 typ host
> a=candidate:1 1 UDP 1694302207 203.0.113.77 49203 typ srflx raddr
> 198.51.100.7 rport 49203
> m=video  63130 RTP/SAVP 120
> 
> *** ERROR: invalid syntax for 'm'
> *** Note: Using the correct transport value fixes this.
> 
> c=IN IP4 203.0.113.77
> a=rtpmap:120 VP8/90000
> a=sendrecv
> a=ice-ufrag:e39091na
> a=ice-pwd:dbc325921d5dd29e4e99147efbabd9a2
> a=fingerprint:sha-256 BB:0A9:0E:05:E9:26:33:E8:70:88:A25:2F:70:9F:04:
> :19:E2:1C:3B:4B:9F:81:5:2F:70:9F:04::F4:A5:A8:D8:
> 
> *** ERROR: invalid syntax for 'fingerprint' (there's too much wrong here
> to enumerate)
> 
> a=rtcp-mux
> a=candidate:0 1 UDP 2113667327 198.51.100.7 63130 typ host
> a=candidate:1 1 UDP 1694302207 203.0.113.77 63130 typ srflx raddr
> 198.51.100.7 rport 63130
> a=rtcp-fb:120 nack pli
> a=rtcp-fb:120 ccm fir
> 
> /a
> 
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