ip address and port check in perl

Give this a try assumes address file is in format of

xxx.xxx.xxx.xxx xx

ip adresss space port

#!/usr/bin/perl

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

my $err_log="/tmp/port_errlog";
open(ERR_LOG, ">$err_log");

while (<>) {
        my ($host, $port) = split / /,$_;
        #Attempt to connect to $host on $port.
        my $socket;
        my $success = eval {
                $socket = IO::Socket::INET->new(
                PeerAddr => $host,
                PeerPort => $port,
                Proto => 'tcp' )
        };
        #If the port was opened, say it was and close it.
        if ($success) {
                shutdown($socket, 2);
        } else {
                chomp ($port);
                print (ERR_LOG "$host $port Failed\n");
        }
}
system ("mail -s "PORT FAILURE ALERT!" your.email@domain.com < /tmp/port_errlog");
~