Ethereal-dev: RE: [Ethereal-dev] Desegmentation atop TCP problem / TCP reassembly and desegmen
From: ronnie sahlberg [mailto:ronniesahlberg@xxxxxxxxx]
Sent: Wednesday, September 01, 2004 9:09 AM
> >I don't like that I have to manipulate the pinfo structures directly to
> >request the desegmentation. I would rather call a function to request the
> >data so the details are hidden from me and changes to the desegmentation
> >code don't impact my code. I would like to see a function i.e.
> >desegment_request_data( pinfo, offset, length); that would make the changes
> >to the pinfo->desegment_len and pinfo->dsegment_offset.
>
> That is exactly what tcp_dissect_pdus() will do for you.
> Please grep for that function and look at the examples in the various callers.
> It is very easy to use.
<deleted/>
I looked at tcp_dissect_pdus and even tried implimenting with it. But since I
don't know the PDU size, because of the null terminated strings, I couldn't
come up with a good method to determine the length of the PDU without reading
the entire PDU. As such the tcp_dissect_pdus doesn't seem to fit very well.
I thought it was easier to just dissect the PDU and use the pinfo->desegment...
method.
Am I missing something?
Jeff F>
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