#!/usr/bin/perl

use strict;
use warnings;
 
use IO::Socket::INET;
 
my @host = qw[ 192.168.1.3 192.168.46.2 ];
my $port = 22;
 
foreach (@host)
{
     check($_, $port);
}
 
sub can_connect
{
     my ($ip, $port) = @_;

     return ! !IO::Socket::INET->new(
                         PeerAddr => $ip,
                         PeerPort => $port,
                         Proto    => 'tcp',
                         timeout  => 10,
     );
}

sub check
{
     my ($ip, $port) = @_;
     my $can_connect = can_connect($ip,$port);

     print "$ip is ";
     print "NOT" unless ($can_connect);
     print " listening on port $port\n";

     return $can_connect;
}

sub check_variation
{
     my $can_connect = can_connect(@_);

     print "$ip is ";
     print "NOT" unless ($can_connect);
     print " listening on port $port\n";

     return $can_connect;
}