Wireshark · Ethereal-dev: Re: [Ethereal-dev] dissector registration question

[Guy Harris <gharris@xxxxxxxxx>]

Filonenko Alexander-AAF013 wrote:

> My question is - how to link dissector of an application protocol to the 
> framing protocol dissector by TCP port number.

See how the HTTP dissector does it - it has a routine 
"http_dissector_add()", which takes a port number and a dissector 
handle, and:

	registers the HTTP dissector with "tcp.port" for that port number;
	registers the specified dissector handle in its own dissector table for 
that port.

When dissecting the body of an HTTP request, it looks up the port number 
in that table to see if it has a dissector for that port number, and 
calls that dissector if it does.