Create a listening socket in PHP ?

From: 127.0.0.1 (newsgroup(at)craznar.com_at_verisign-sux-ijlkl.com)
Date: 10/20/03 

Date: Mon, 20 Oct 2003 13:35:53 GMT

How does one go about creating a listening socket in a PHP script.

I'm trying to work out a way of finding out my IP address (dynamic,
behind NAT) and I can't use the normal http idea to get it (due to
stuff proxy by ISP).

SO what I thought was to write a protected PHP script which listend for
ONE request on that port - and send back the IP bound on that port.

So from my linux box I would:

1. GET http://xyz.com/wait.php?port=2002
2. telnet xyz.com 2002

Thus geting my IP address ...

Any ideas ? 

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