SIP plugin: generate offer SDP which produce browsers WebRTC error

[ycherniavskyi]

In the Chrome console I can see the next error (call completely failed):

WebRTC error: DOMException: Failed to execute 'setRemoteDescription' on 'RTCPeerConnection': Failed to set remote offer sdp: The BUNDLE group contains MID='video' matching no m= section / janus.js:417

In the Firefox console I can see the next error (only audio stream initiated):

WebRTC error: DOMException: No transceiver for bundled mid video / janus.js:417:15

After some investigation, I suppose that the issue with the next line m=video 0 RTP/AVP 120 121 126 97 in incoming SIP call SDP, which is lead to generating the next incorrect (from browsers point of view) line a=mid:(null) in Janus offer SDP.

[lminiero]

Pretty sure we fixed this already, recently. Make sure you're using master, if not already.

[ycherniavskyi]

Are you about #2390? Ok, I will try master and report.

[ycherniavskyi]

Just got the necessary logs, and can confirm that in v0.10.7 the issue is resolved - instead of a=mid:(null) now generated a=mid:1.