setup_sdp_transport_resend() should be unnecessary once all higher layers use setup_sdp_transport() and the "registration" code within dissect_sdp() is removed.
svn path=/trunk/; revision=47572
Added setup_sdp_transport() to allow higher layer protocols to call SDP with context to correctly setup an OFFER/ANSWER within SDP (which doesn't have its own transport layer). I attempted to keep backwards compatibility until all higher layer protocols set up OFFER/ANSWER context. If OFFER/ANSWER (request/response) can't be found (which would be the case for higher layer protocols without context), Wireshark should resort to the old behavior of applying SDP information as it sees packets.
This patch includes integration with SIP as it appears to have the most bug reports. Other higher layer protocols will be done later. Most are mentioned in bug 2368.
Fixes bug 2368 (https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=2368) and all its duplicates
Fixes bug 2992 (https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=2992) and all its duplicates
svn path=/trunk/; revision=47564
Michael Mann