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webrtc SDP re-negotiation(reoffer/answer) fails in mozilla-Chrome inter op

  • 2 replies
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  • 3 views
  • Last reply by guigs

pooja_prabhu
pooja_prabhu
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I have written a webrtc client in which re-negotiation(re-offer/answer) is required after call gets established. Scenarios such as 1) upgrade calls from audio to video 2)Downgrade call from video to audio

I see mozilla/firefox has issues with re-negotiation of SDP( it fails in setting remote description). Any idea why is this a constraint in Mozilla and has no issues with Chrome. We cannot see this issue in Mozilla-Mozilla calls, but only in calls initiated from mozilla to chrome. This issue was not there in firefox 37 but in latest firefox.

steps to reproduce: 1) initiate a call from firefox- mozilla 2) upgrade the call from chrome we can see set remote description fail in firefox.

I have written a webrtc client in which re-negotiation(re-offer/answer) is required after call gets established. Scenarios such as 1) upgrade calls from audio to video 2)Downgrade call from video to audio I see mozilla/firefox has issues with re-negotiation of SDP( it fails in setting remote description). Any idea why is this a constraint in Mozilla and has no issues with Chrome. We cannot see this issue in Mozilla-Mozilla calls, but only in calls initiated from mozilla to chrome. This issue was not there in firefox 37 but in latest firefox. steps to reproduce: 1) initiate a call from firefox- mozilla 2) upgrade the call from chrome we can see set remote description fail in firefox.

All Replies (2)

guigs
guigs
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I am thinking that is because it did not accept the renegotiation or a media type was not set. It depends on how its implemented. Also try stackoverflow.com 

I will also ask in #Wertc
guigs
guigs
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There was also a change in version 38 that you might need to update: