use IO::Socket;
my $sock = new IO::Socket::INET (
                                LocalAddr => 'localhost',
                                LocalPort => 10000,
                                Proto => 'tcp',
                                Listen => 1,
                                Reuse => 1,
                                );

die "Could not create socket\n" unless $sock;

my $new_sock = $sock->accept();

while(defined(<$new_sock>)) {

     print $_;

  }
close($sock);

##</code><code>##

use IO::Socket;
my $sock = new IO::Socket::INET (
                                 PeerAddr => 'localhost',
                                 PeerPort => 10000,
                                 Proto => 'tcp',
                                 );
die "could not create socket\n" unless $sock;

print $sock "Hello there\n";
close($sock);