[Tutor] listen in on other program's tcp connections

[Martin Walsh]

phpfood wrote:
> On windows XP, I'm running a program that sends TCP connections on port
> 5039. I'v ran wireshark to determine this. I want to create a simple
> program that listens for these connections and intercepts and then turns
> the data transferred into a string. From there I'd obviously like my
> program to act and manipulate those strings, but for now just spitting
> out that intercepted TCP data is good enough.

IIRC, wireshark uses libpcap for which there are no fewer than two
python extension modules (though, I have not used either):
http://pylibpcap.sourceforge.net/
http://code.google.com/p/pypcap/

Less like a socket proxy, more like packet sniffing.

> 
> I was reading up on Twisted. http://twistedmatrix.com/
> Can someone get me started on how to do this with twisted framework or
> anything else?