From mboxrd@z Thu Jan  1 00:00:00 1970
From: Pablo Neira Ayuso <pablo@netfilter.org>
Subject: Re: queue and HTTP
Date: Thu, 09 Nov 2006 12:14:50 +0100
Message-ID: <45530DAA.6040301@netfilter.org>
References: <f015bcab0611090240s39dcff9g4cbd58dfbce9dcf4@mail.gmail.com>
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To: miguel Angel Vazquez <mikinho21@gmail.com>
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miguel Angel Vazquez wrote:
> Hello mates.
> 
> I'm trying to intercept my own HTTP packages in the OUTPUT hook (I
> don't want to use sniffers or ethereal). For that reason I've decided
> to use the iptables-queue-modules...recently I can get all the
> IP-header information using iphdr struct...but now I don't know how to
> continue in order to get the INFO (HTTP packet).

payload_offset = iph->ihl * 4 + tcph->doff * 4

-- 
The dawn of the fourth age of Linux firewalling is coming; a time of 
great struggle and heroic deeds -- J.Kadlecsik got inspired by J.Morris