Hi
For implementing the H.323 dissector I have to dissect the H.245 protocol.
Unfortunbately this protocol is NOT bound to a known tcp port. This
information is exchanged between two machines using the H.225 protocol.
Unfortunately after that time I only know one IP address and corresponding
port number.
What I want to do is this:
- When I receive a H245 adresss and port I call dissector_add() with the
correct port number
- I also call conversation_new() with the correct port and adress and some
garbage to fill in either dest or src.
- If the H.245 is called to dissect a frame it checks for a known
conversation. If the conversation is not known it stops.
Is it safe to call dissector_add() several times with the same port number?
How can I find out if there two or more conversations with the same
portnumber? What I want to do is to call dissector_delete() (or simliar)
when the last conversation with a certain portnumber has stopped.
I could skip the last step, so the problem becomes significantly smaller,
but the first question remains. Can I call dissector_add during dissection?
--
Andreas Sikkema
andreas.sikkema@xxxxxxxxxxx
"Standing barefoot in a river of clues, most people would
not get their toes wet." - Brian Kantor in a.s.r.
