[Webkit-unassigned] [Bug 202405] New: Regression: iOS 13.1 MediaStreamTrack.enabled = false kills audio track

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=202405

            Bug ID: 202405
           Summary: Regression: iOS 13.1 MediaStreamTrack.enabled = false
                    kills audio track
           Product: WebKit
           Version: Other
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebRTC
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: alan.ford at gmail.com
                CC: youennf at gmail.com

Created attachment 379902

  --> https://bugs.webkit.org/attachment.cgi?id=379902&action=review

Screenshot

To mute an audio track in WebRTC, you can set "enabled" on the MediaStreamTrack to false. This worked fine up until iOS 13.1 (and maybe also not in iOS 13), but now if you set "enabled" to false, then "readyState" goes from "live" to "ended" and no audio flows in either direction from then on.

This does not fail on video tracks.

You can test this with the Safari console on https://webrtc.github.io/samples/src/content/peerconnection/pc1/ - see screenshot.

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