Bug 177126

Summary: getUserMedia fails with an OverConstrainedError when no devices are found
Product: WebKit Reporter: Trond Kjetil Bremnes <tkbremnes>
Component: WebRTCAssignee: Nobody <webkit-unassigned>
Status: NEW    
Severity: Normal CC: eric.carlson, jonlee, webkit-bug-importer, youennf
Priority: P2 Keywords: InRadar
Version: Safari Technology Preview   
Hardware: All   
OS: Unspecified   

Trond Kjetil Bremnes
Reported 2017-09-19 01:01:54 PDT
If no devices are detected (MediaDevices.enumerateDevices responds with an empty array), the MediaDevices.getUserMedia fails with a OverConstrainedError. This can happen if the webcam for some reason fails (happens from time to time on MacOS), or always in the case of the iOS Simulator. According to the specs, it should have failed with a NotFoundError – OverConstrainedError should happen when the available devices are not able to fulfill the constraints set (e.g. resolution).
Attachments
youenn fablet
Comment 1 2017-09-19 08:30:41 PDT
I wonder whether there is a fingerprinting issue here, probably not big in practice.
Radar WebKit Bug Importer
Comment 2 2017-09-19 09:25:47 PDT
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