A security bug around this behavior (which is not disclosed to the public yet) has been fixed and uplifted to 48, which probably causes this new behavior.
Nils > On Sep 19, 2016, at 02:22, Lorenzo Miniero <[email protected]> wrote: > > Il giorno lunedì 19 settembre 2016 11:18:52 UTC+2, Martin Thomson ha scritto: >> No good info on the bug, which seems plausible. I do have an >> observation though: >> >> You can't rely on DTLS alerts arriving, since they are not >> retransmitted. You should use signaling for session termination. >> > > > Hi Martin, > > yep, you're right, and in some modules we're already doing this, although > it's not happening in this case which is what made the bug pop up. > > Thanks, > Lorenzo > > >> On Mon, Sep 19, 2016 at 6:44 PM, Lorenzo Miniero <[email protected]> wrote: >>> Hi, >>> >>> I've noticed a weird behaviour that seems to have started happening with >>> Firefox 48, and is apparently happening with the latest Nightly as well. It >>> looks like Firefox is not sending a DTLS alert anymore when a >>> PeerConnection is closed. You can test this easily by opening this web page >>> in a couple of tabs: >>> >>> https://janus.conf.meetecho.com/videocalltest.html >>> >>> This is a demo of a WebRTC call with media going through my WebRTC server. >>> To replicate the issue, just choose two different usernames and have one >>> call the other, and then have one of the two hangup. This will result, for >>> both users, in a call to the PeerConnection.close(), and about:webrtc >>> confirms both PCs are indeed closed, but looking at the traffic via >>> Wireshark/tcpdump no DTLS alert is sent to the server by either of them. >>> This makes the server actually unaware of the PC being closed. >>> >>> Is this a known issue? >>> >>> Thanks! >>> Lorenzo >>> _______________________________________________ >>> dev-media mailing list >>> [email protected] >>> https://lists.mozilla.org/listinfo/dev-media > > _______________________________________________ > dev-media mailing list > [email protected] > https://lists.mozilla.org/listinfo/dev-media
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