[stunnel-users] Access to Packet Content
Jochen.Bern at LINworks.de
Wed Mar 26 13:36:14 CET 2014
On 26.03.2014 13:05, Michael Carlino (RIT Student) wrote:
> In the client stunnel I need to make a small change to the HTTP
> packet. I need to add some data to it.
Then you *don't* want to manipulate *packets* (as in, using iptables,
tcpdump, wireshark etc.). Adding data to a packet will mess up basic
TCP/IP mechanisms like path MTU discovery real fierce.
> I know that as a proxy stunnel has to be and tries to be general in
> nature. I am not concerned (right now) with developing a feature that will
> become available to others later. I don't mind if my changes make my
> development version of stunnel single-purpose. My work is academic and
> proof-of-concept in it's nature.
Is there a reason - apart from the "server-side stunnel might want to
close the connection" you mentioned - not to leave stunnel to do what it
strives to do, and insert one or two additional layers with some
dedicated HTTP-munging software (say, privoxy) instead? Or, for that
matter, a dedicated SSL sniffer (say, ssldump) if the server side needs
only *read* access to the actual HTTP data?
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