11-27-2005
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Join Date: Sep 2002
Last Activity: 4 May 2014, 6:22 AM EDT
Location: Hong Kong, China
Posts: 1,622
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Try tcpdump to capture raw packets first. Don't know Mac. On other Unix, I can easily open the file captured with tools such as ethereal and then use the "http" display filter to limit display to contain only HTTP messages, etc.
tcpdump -i en0 -nlp tcp dst port 80 -w packet_file.log