[Webkit-unassigned] [Bug 173307] New: WebRTC: STUN / TURN do not seem to work properly

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=173307

            Bug ID: 173307
           Summary: WebRTC: STUN / TURN do not seem to work properly
           Product: WebKit
           Version: Safari Technology Preview
          Hardware: Unspecified
                OS: macOS 10.12
            Status: NEW
          Severity: Major
          Priority: P2
         Component: WebKit Misc.
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: db at threema.ch

I'm not sure if it's use of an old API or misconfiguration on my side, but STUN and TURN don't seem to work with the current Safari Technology Preview.

I used two tests. The first one - our own - can be found at https://web.threema.ch/troubleshoot/ (click the "click to test" button on the bottom part of the page to start). The source code can be found here: https://web.threema.ch/troubleshoot/troubleshoot.js The page also uses adapter.js.

The test first creates a new RTCPeerConnection with three server entries (TCP, UDP and TLS). It then creates a new datachannel (to trigger the negotiation needed flag) and an offer. The offer should trigger collection of ICE candidates in the browser. This does not seem to happen.

The second test is the WebRTC Trickle Ice Demo found at https://webrtc.github.io/samples/src/content/peerconnection/trickle-ice/ in default configuration. No candidates are gathered.

I'm aware that Safari does candidate filtering (see Bug 173052). But checking "Disable ICE candidate filtering" does not change the behavior (and it wouldn't make sense either since relay candidates do not leak local IP addresses).

Both tests work fine in Firefox and Chromium.

(PS: You should probably add a WebRTC component to your Bugzilla.)

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