[Webkit-unassigned] [Bug 205103] New: Safari won't respect system's input device when make a RTP call using appr.tc

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=205103

            Bug ID: 205103
           Summary: Safari won't respect system's input device when make a
                    RTP call using appr.tc
           Product: WebKit
           Version: Safari 12
          Hardware: Macintosh
                OS: macOS 10.14
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebRTC
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: jimmy.xu at ringcentral.com
                CC: youennf at gmail.com

Safari (12.1.1) won't respect the System's (Mac OS 10.14.5) input device when using appr.tc

Reproduce steps:
1. Install Virtual audio device (Soundflower) on Mac OS 10.14.5
2. Select Soundflower as input device in system perferences
3. Open appr.tc in Safari
4. Create a room (Party A)
5. Join the room from another PC using Chrome. (Party B)
6. Play audio using sox from Soundflower


Expected behavior:
After step 5, Party B should hear nothing because the input device of Party A is a virtual audio device
After step 6, Party B should hear the voice played by sox

Actual behavior:
After step 5, Party B can hear voice from Party A's internal microphone
After step 6, Party B can still hear voice from PartyA's internal microphone but not the voice from sox


Same test on Chrome and Firefox, Chrome and Firefox will respect the input choice in system preferences.

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