Perl and Networking:
It is easy to connect one computer to another using Perl & TCP, if at least one computer knows the IP address of the other. But, is there a way to send a message to all computers on a network on a certain port? A sort of "Hello I'm here!" message? TCP? UDP? Something else?
I'd like to make some programs that can wander (mobile agents) but they won't know what machines are up and running before hand. They need the ability to send a message out on a port that identifies themselves to the other bots. I also don't want to have to have a list of IP's to try. This should be automatic.