Wireshark-bugs: [Wireshark-bugs] [Bug 7999] Media descriptions of rejected INVOKEs are not dropp
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From: bugzilla-daemon@xxxxxxxxxxxxx
Date: Mon, 19 Nov 2012 10:42:33 -0800 (PST)
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=7999

--- Comment #4 from Anders Broman <anders.broman@xxxxxxxxxxxx> 2012-11-19 10:42:32 PST ---
(In reply to comment #1)
> When decoding VOIP calls containing intermediate invokes which have been
> rejected by the peer the media descriptions from these rejected invokes are
> used for further decoding.
> I've got a pcap file from a customer I have a NDA with, so I can't put in the
> pcap file itself in the attachment but only a screen shot of the VOIP flow. The
> display in the frame list has the same error.
> You can see that an attempt is made to negotiate a T.38 conversation, but that
> was rejected. Even though wireshark interprets the following RTP data as T.38
> payload instead of RTP payload, what it really is.

The problem is that we do not keep state of the protocol using SDP,
a solution would require quite a bit of refactoring which no one has found the
time/energy to do yet.

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