Ethereal-dev: Re: [Ethereal-dev] packet-dsi.c, tcp_dissect_pdus and short frame

Note: This archive is from the project's previous web site, ethereal.com. This list is no longer active.

Date Index Thread Index Other Months All Mailing Lists
Date Prev Date Next Thread Prev Thread Next
From: Guy Harris <guy@xxxxxxxxxx>
Date: Sun, 28 Jul 2002 23:20:04 -0700
On Sun, Jul 28, 2002 at 12:46:22AM +0000, didier wrote:
> Is it a tcp_dissect_pdus limitation or a pb in dissect_dsi_packet()?

It's an Ethereal limitation - there's no provision for reassembling
short packets.  The IP/IPv6/CLNP/etc. fragment reassembly code, and the
TCP segment reassembly code, doesn't even try to reassemble them.

Reassembling short packets is difficult, as you'd have to have a packet
with "holes" in it; if packets are being desegmented over TCP, it could
be more difficult if, for example, the missing part of a frame includes
the header of a higher-level packet.