Ethereal-dev: Re: [Ethereal-dev] Using SDP to detect RTP and RTCP streams

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From: Guy Harris <guy@xxxxxxxxxxxx>
Date: Mon, 17 Nov 2003 13:56:02 -0800

On Nov 17, 2003, at 7:51 AM, Lars Roland wrote:


attached is a patch for the sdp dissector.
Checked in, with changes to get rid of the global variables (I pass a structure containing the pointers down to the dissectors for c= and m=), and to add some #includes to get "inet_aton()" declared. 


However, this is a first try and it might not work in some cases.
It currently doesn't handle the case of a set of multicast addresses in a c= line, e.g. "c=IN IP4 224.2.1.1/127/3", or multiple "c=" lines, nor does it handle the case of multiple ports in an m= line. (Note that it should ignore SDP packets that have multiple addresses *and* ports; to quote RFC 2327:
It is illegal for both multiple addresses to be specified in the "c=" field and for multiple ports to be specified in the "m=" field in the same session description.)