I tried it along these lines:

#!/usr/bin/perl

use strict;
use IO::Socket;
use Net::hostent;

my $port = 22500;

my $server = IO::Socket::INET->new(
    LocalAddr => 'localhost',
    LocalPort => $port,
    Proto     => 'tcp',
    Type      => SOCK_STREAM,
    Listen    => SOMAXCONN,
    Reuse     => 1
) or die "Can't setup server: $!\n";
print "[Server $0 accepting clients]\n";

my $request;

while ( my $client = $server->accept() ) {
    my $client->autoflush(1);
    my $hostinfo = gethostbyaddr( $client->peeraddr );
    print $client "$request: \n";
    while ( $request = <$client> ) {
        next unless /\S/;
        if (<$client>) {
            print $client "$request\n";
        }
        else {
             close($client);
    }
}
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