[Webkit-unassigned] [Bug 182906] ICE Gathering never completes due to srflx candidate

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=182906

daginge at confrere.com changed:

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--- Comment #4 from daginge at confrere.com ---
Created attachment 347617

  --> https://bugs.webkit.org/attachment.cgi?id=347617&action=review

rtcstats-dump of failing call where no srvflx candidate was emitted

We are seeing some instances of this as well. I have attached an rtcstats dump from a failing call done on iOS towards Chrome 68. Please open in https://fippo.github.io/webrtc-dump-importer/rtcstats

The issues is that as you can see, onicecandidate is called twice in the initial attempt from the iOS side, generating only host candidates. This causes the call to fail after 15 seconds. Upon an icerestart (initiated by iOS), it works just fine and gathers candidates as normal.

Any idea what's going on here? Unfortunately I don't have a perfect repro, as I have yet to discover the cases where this happens consistently. I suspect it might be related to https://bugs.webkit.org/show_bug.cgi?id=181009 but I funnily enough don't have an IPv6 network to test on.

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