Very Computer

This is probably a frequent requerment, so I thought I'd ask here before
I re-invent another wheel.

We are using GDB to remotely debug processes. GDB runs on UNIX box 'A'
and GDB-Server runs on UNIX box B. GDB connects to GDB Server via a
socket.

However, in our configuration, a process on A can not establish a direct
connection to B, so a third machine C is used between the two which CAN
connect to both.

We therefore need a small proxy program which runs on the third machine
It waits for a socket connection from A and makes a socket connection to
B, and thus establishes a transparent connection between A (gdb) and B
(gdbserver).

I don't know very much about implementing sockets, but it strikes me
that there *must* be some sample code or a ready-made proxy program
source code somewhere on the net.

Can anyone suggest where I might find it?

(Incidentally the program will eventually need to service a second socet
connection aswell - I suppose this will be implemented in a second
thread.)

Thanks

Colin

Sent via Deja.com http://www.deja.com/
Before you buy.

  http://www.excessus.demon.co.uk/misc-hacks/index.html#fw

Quote:> (Incidentally the program will eventually need to service a second socet
> connection aswell - I suppose this will be implemented in a second
> thread.)

Quick example of the syntax.  To set up a server which listens on port
1234 and forwards connections to otherhost port 4321, do

  fw from 1234 to otherhost:4321

[Licence is GNU GPL; uses Autoconf to configure itself; big manual page
which I believe describes everything.]

-- [mdw]