Advice on a TCP passthru daemon for HTTP proxy rotation

[Rob Wolfe]

Robin Haswell wrote:
> Hey there
>
> Soon we will have many squid proxies on many seperate connections for use
> by our services. I want to make them available to users via a single HTTP
> proxy - however, I want fine-grained control over how the squid proxies
> are selected for each connection. This is so I can collect statistics,
> control usage on each proxy, monitor what's going on - etc. However I
> don't want to implement the HTTP proxy protocol in Python, and would
> much rather let my daemon run as a man-in-the-middle for TCP, similar to
> this netcat command:
>
> rob at aranea:~$ mknod backpipe p
> rob at aranea:~$ nc -l -p 8080 < backpipe | nc ganesh 8080 > backpipe
>
> Basically when my daemon received a connection (call it "c1"), it makes a
> connection to one of my squid proxies ("c2"), then all data which gets
> read from c1 is written to c2 - all data read from c2 is written to c1.
> I'm pretty sure there's an elegant way to do this but I was wondering if
> anyone had any input? I've tried GIYF'ing this but it's difficult to
> search for :P

Maybe this is what you're looking for:

http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/483732

Regards,
Rob