On 10/16/18 2:35 PM, Eric Green wrote:
If you try and set up a call to Firefox 63.0+ without including an
a=group:BUNDLE attribute in the SDP Firefox will fail to set the local
description that it generated.
I have created a small demo of this application on Github
(https://github.com/egreenmachine/no-bundle-failure) which can be viewed live
at https://egreenmachine.github.io/no-bundle-failure/. You can see the error
messages on the web console.
FF63+ fails with DOMException: "Local descriptions must have a=mid
attributes.". I believe that you cannot have a=mid attributes without having groups.
This is not the case. mid attributes are used for more than bundle
grouping. We used to be more tolerant of missing mids in remote
descriptions, but we're working on that over here:
https://bugzilla.mozilla.org/show_bug.cgi?id=1495569
In the meantime, just put mids in your SDP, because mids are
crucially important to the latest RTCRtpTransceiver-based specifications.
Best regards,
Byron Campen
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