Sending a message over the internet on port 80 ?

Giganews Newsgroups
Subject: Sending a message over the internet on port 80 ?
Posted by:  Ed (edatho…@sisac.com)
Date: Wed, 7 Apr 2004

I need to write a app that will be on a pc on the internet, behind a
firewall.  This app jobs is to listen to port 80 (because its the only open
port) and a ipaddress for a set of special chars (that I define).  When it
receives those special chars I want to send it my ip and port so it can tell
my other program (which I already have) to connect back to me.

Can I use port 80 ?
Will it cause any problems with the browser ?
What components should I use ?

Thanks,

Ed

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