Wireshark · Ethereal-dev: Re: [Ethereal-dev] beginner- help needed...

[Guy Harris <gharris@xxxxxxxxx>]

nimalan s wrote:

> I have created a protocol dissector say "X" on top of
> udp.It is referenced by a port number.It works
> fine.Now I want to create a new dissector on top of
> "X" and this doesnot have a port number.

I.e., there's no port number field in protocol X that distinguishes 
between different protocols running on top of protocol X?

> I want this
> dissector to handle the payload part of "X" so that it
> can be further dissected into its own header and data
> fields.

So does that mean that the new protocol is the *only* one that would run 
on top of protocol X?

> I really dont know how to do it as the new
> protocol doesnot have a port number.
> I found a particular case on X, only for which the new
> protocol will be appended.

Or does it mean that there might be other protocols running on top of X, 
but there isn't some single field that specifies what the other protocol 
is, so the decision is based on looking at various fields?