[Webkit-unassigned] [Bug 196416] New: IOS 12.2 WebRTC Safari send track event with invalid MediaStream

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=196416

            Bug ID: 196416
           Summary: IOS 12.2 WebRTC Safari send track event with invalid
                    MediaStream
           Product: WebKit
           Version: Safari 12
          Hardware: All
                OS: iOS 12
            Status: NEW
          Severity: Critical
          Priority: P2
         Component: WebRTC
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: betimer at gmail.com
                CC: youennf at gmail.com

Prior to IOS 12.2:
If for a 2 way call between IOS Safari and Chrome
for peer connection events particularly track events:

Safari will send: (happpens in order)
1. audio track event with parameters: audioTrack, mediaStreamA (mediaStreamA contains audioTrack)
2. video track event with parameters: videoTrack, mediaStreamA (mediaStreamA contains both audioTrack and videoTrack)
The 2 tracks shared the exact same container mediaStreamA


But now with IOS 12.2 Safari:
1. audio track event with parameters: audioTrack, mediaStreamA (mediaStreamA contains audioTrack)
2. video track event with parameters: videoTrack, mediaStreamB (mediaStreamB contains only videoTrack)
The 2 tracks are located in the different mediaStream object. (different id, and each only contains its own track)

Please investigate this, as I can see, this breaks quite a lot different products.

Thanks.



Xin Wang

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