Wireshark-users: [Wireshark-users] Extracting files from pcap

From: Jim Balo <jimbalo22@xxxxxxxxx>
Date: Sat, 11 Oct 2008 21:57:21 -0700 (PDT)
Hi,
 
I am trying to learn how to extract transferred files from pcap dumps. 
 
I have a pcap file with an http data transfer that is gzip-encoded ("Accept-encoding: gzip,deflate" in the http header).  I tried selecting and exporting the data portion of the two packages that seemed to be part of this transfer and then concatenate them, but when I try to gunzip it, I get "unexpected end of file."  Using Network Miner, the file decodes just fine.
 
I would like to learn how to do this using only Wireshark - does anyone know of a good guide on how to do this in Wireshark?
 
Thanks,
JB