Wireshark-dev: Re: [Wireshark-dev] Working with pcap
From: "Rob MacKenzie" <[email protected]>
Date: Thu, 5 Jun 2008 14:19:23 -0400
http://wiki.wireshark.org/Development/LibpcapFileFormat

That's a description of the format.  If you want to analyze timestamps,
it is trivial to do so with the packet times inside the packet header.
I wrote a python app to do precisely that a while back.

Like Guy Harris said, the Pcap file is very standardized and outside
Wireshark's control.  This is more of a question relating to
libpcap/winpcap or at least Wireshark-users.

Good luck with your development,

Rob MacKenzie
Advanced Connectivity Developer

-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Guy Harris
Sent: June 5, 2008 12:34 PM
To: Developer support list for Wireshark
Subject: Re: [Wireshark-dev] Working with pcap

Nicholas Marra wrote:
> I'm attempting to use pcap to compare time intervals. I need to know
how
> Wireshark implements pcap. Is there any good info out there?

What do you mean by "implements pcap"?  All libpcap/WinPcap do is let
you capture packets; determining the interval between packets (which I
presume are the time intervals you're comparing) is something the
application using libpcap/WinPcap will have to do itself.
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