[rtcweb] media rollback and glare

[Andrea Dixon <[e-mail]>]

The Webrtc spec states:

“This API changes the local media state. In order to successfully handle
scenarios where the application wants to offer to change from one media
format to a different, incompatible format, the
RTCPeerConnection<http://www.w3.org/TR/webrtc/#idl-def-RTCPeerConnection>must
be able to simultaneously support use of both the old and new local
descriptions (e.g. support codecs that exist in both descriptions) until a
final answer is received, at which point the
RTCPeerConnection<http://www.w3.org/TR/webrtc/#idl-def-RTCPeerConnection>can
fully adopt the new local description, or roll back to the old
description if the remote side denied the change.

Issue 8

ISSUE: how to indicate to roll back?”

When will rollback be added to webrtc? Is it imminent? We need it to
resolve glare scenarios where both peers renegotiate at the same time. Or
is there another way of resolving glare in webrtc? This is becoming a
pressing concern.

Regards

 
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