https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=2992
--- Comment #4 from Christian Garbin <christian.garbin@xxxxxxxxxxx> 2008-10-23 16:12:49 PDT ---
(In reply to comment #3)
> The SDP dissector sets up conversations even if later in the negotiations some
> of the options are dropped. In this case SRTP is proposed, but later rejected
> by setting the port to 0. That isn't handled as indication to drop a proposal.
Jaap,
It seems that the dissectors needs to be upgraded to conform to RFC 3264,
chapter 6:
An offered stream MAY be rejected in the answer, for any reason. If
a stream is rejected, the offerer and answerer MUST NOT generate
media (or RTCP packets) for that stream. To reject an offered
stream, the port number in the corresponding stream in the answer
MUST be set to zero.
In this case the answer has the SRTP m line port set to zero.
Christian
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