For your reference, here is the entire code:

use IO::Socket;
use strict;
use warnings;

our $F_PORT = shift or die "Please specify First port number\n";
our $T_PORT = shift or die "Please specify Third port number\n";

#our $file = shift or die "Please specify input file\n";;

my $f_socket = IO::Socket::INET->new('LocalPort' => $F_PORT,
                       'Proto' => 'tcp',
                       'Listen' => 2)
    or die "Second: Can't create socket to First($!)\n";
   
my $t_socket = IO::Socket::INET->new( 'PeerAddr' => "localhost",
                    'PeerPort' => $T_PORT,
                       'Proto' => 'tcp')
    or die "Second: Can't create socket to Third($!)\n";

my $match = "brenna";
    
print "Second listening\n";
while(my $first = $f_socket->accept()) 
{
    #setup acknowledgement
    print "Second: Accepted connection from First..\n";
    my $f_host = gethostbyaddr($first->peeraddr, AF_INET);
    my $f_port = $first->peerport;
    
    while (<$first>) 
    {
        my $name = $_;
        chomp($name);
        
        #send acknowledgement message to First
        print "Received from [$f_host $f_port]: $name\n";
        #print $f_socket "$.: $name\n";
        
        if($name eq $match)
        {
            print "Second found match: $name\n";
            print "Second sending \"$name\" to Third\n";
            
            print $t_socket "$match\n";
        
            while(<$t_socket>)
            {
                #print "Second has accepted socket to Third...\n";
                
                my $name = $_;
                chomp($name);
                
                my $t_host = gethostbyaddr($t_socket->peeraddr, AF_INE
+T);
                my $t_port = $t_socket->peerport;
                
                print "Received from [$f_host $f_port]: $name\n";     
            }
        }                    
    }
}
die "Second: Can't accept socket from First($!)\n";
[download]

Any help would be much much appreciated... I've been beating my head against this for days now.

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