1488818 - Google Hangouts stopped working in Firefox 63 (soon to be beta)!

Status: RESOLVED DUPLICATE of bug 1487617

(Core :: WebRTC: Signaling, defect, P2)

Description

[Jan-Ivar Bruaroey [:jib] (needinfo? me)]

Unable to join calls.

STR:
 1. In Chrome, go to https://hangouts.google.com/ and create a video room; get URL.
 2. In Firefox, paste in URL. e.g. https://hangouts.google.com/call/W2-dY3imA4tpnJXJ25k6AAEE
 3. Allow camera and mic sharing as necessary.

Expected result:
- Joins room and sees other participant (e.g. self-view flips around y-axis)

Actual result:
- "Error: Sorry, we encountered a problem joining this video call.  Close"

  "The video call ended because of an error"

Web console reveals:

  InvalidSessionDescriptionError: Changing the mid of m-sections is not allowed.
  InvalidStateError: RTCPeerConnection is gone (did you enter Offline mode?)

Regression range:

17:43.20 INFO: Last good revision: 54beb60ca7d5221a1b4bb61019fe0def40949899
17:43.20 INFO: First bad revision: 836086dfcd2fb2017381a4ec5d32f757f8b1458f
17:43.20 INFO: Pushlog:
https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=54beb60ca7d5221a1b4bb61019fe0def40949899&tochange=836086dfcd2fb2017381a4ec5d32f757f8b1458f

Tue Aug 28 21:23:04 2018 +0000	836086dfcd2f	Byron Campen [:bwc] — Bug 1483338: Stop using level as the identifier for media transports. r=mjf

Comment 1

[Jan-Ivar Bruaroey [:jib] (needinfo? me)]

Most likely a web-compat issue, but tracking it in media for now.

With 63 about to become beta, do we want to revert Bug 1483338 to give Google time address fix this?

Comment 2

[Byron Campen [:bwc]]

(In reply to Jan-Ivar Bruaroey [:jib] (needinfo? me) from comment #1)
> Most likely a web-compat issue, but tracking it in media for now.
> 
> With 63 about to become beta, do we want to revert Bug 1483338 to give
> Google time address fix this?

No. There's other stuff I'm working on that's going to be a nightmare to unrot if we back this out from underneath it.

Comment 4

[Byron Campen [:bwc]]

Yeah, this is a hangouts bug; they're rewriting the local description's mids.

Comment 5

[Julien Cristau [:jcristau]]

Clearing tracking/status flags in favor of 1487617.