in reply to UDP Client and Server in one

Here is one way to do it:

* Make your "recv" non-blocking, with a 5-second timeout
* Write to your socket with content based on the most recent successful recv

You will likely run into trouble implementing this - once you have some code, post back here, and we can help.

        ...it is unhealthy to remain near things that are in the process of blowing up.     man page for WARP, by Larry Wall

In Section Seekers of Perl Wisdom