More easily: take a capture file containing TCP packets, and run it thru tcpdump and thru your application. Send what tcpdump reports and what your application reports.

GV

--------------------------------------------------
From: "Eloy Paris" <[email protected]>
Sent: Thursday, August 19, 2010 2:43 PM
To: <[email protected]>
Subject: Re: [tcpdump-workers] tcp sequence and ack number with libpcap

On 08/19/2010 05:29 PM, Andrej van der Zee wrote:

Source port and dest number seem to be ok, so I guess this is not the
problem. Nevertheless, I tried the code below but it does not make a
difference. Why do I get those weird seq and ack numbers? I am really
stuck...

Can you provide some examples of those "weird seq and ack numbers"?

Eloy Paris.-
netexpect.org
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