Please explain!

Are send.pl and recv.pl script of yours? Can we see the relevant parts?

Are those scripts meant to be run in a command line environmnent and/or in a CGI environment?

Do you check whether every system call returns an error? Do you print it in case? Do you use strict and invoke perl with -w?

How exactly do you run the scritps in a CGI environment? One from the command line (say recv.pl) and the other (say send.pl) invoked as a CGI from a browser?

-- TMTOWTDI