On Jul 23, 2008, at 6:47 PM, Kumar, Hemant wrote:
> So that it doesnt happen that any junk UDP packets gets dissected
> just because it fulfilled initial conditions.
If you can't define initial conditions that can usually distinguish
between packets for your protocol and packets not for your protocol
and that can be implemented in a dissector, you can't use heuristic
dissectors; you will have to let the *user* determine whether packets
are for your protocol or not, and specify manually whether to dissect
them as your protocol.
This would mean that you would have to define a preference for your
protocol so that the user can specify which port or ports should be
dissected as your protocol, or that you will have to register your
dissector as a dissector that can dissect packets atop UDP with
dissector_add("udp.port", <handle for your dissector>);
and let the user specify with the "Decode As" menu that packets to or
from particular ports should be dissected as your protocol.
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