I could reduce the time to 2 seconds using Net::Pcap here is the code , I am positive that there is a easier way , but this code works for me, I hope it helps!. 
use IO::Socket;
use Net::Pcap;
use NetPacket::Ethernet  qw(:strip);
use NetPacket::TCP;
use NetPacket::IP qw(:strip);
use List::Util qw(first);

# Find all interfaces.
my @interfaces = Net::Pcap::findalldevs(\%devinfo, \$err);
my $int = first { $devinfo{$_} =~ /Real/ } @interfaces;

#print $int; in my case i want to find Realtech interface

$snaplen = 1515; #Package lenght
$promisc = 1; #Captur packages in promiscious mode
$timeout = 30;
$count = 12; # (count = 0 = forever) here is the number of packages yo
+u want to capture

my $pcap = Net::Pcap::open_live(
        $int,$snaplen,$promisc,$timeout,\$err
        );    

#Select the interface you want to capture packages , and it's informat
+ion

my $socket = new IO::Socket::INET (
                                  PeerAddr => '192.168.11.244',
                                  PeerPort => '6008',
                                  Proto => 'tcp',
                                 );
die "Couldn't connect: $!\n" unless $socket;

$data = pack("CccccccCcCC",02,65,63,80,81,76,86,03,100,13,10);
    
if ( $socket )
{
    print $socket $data ;
    Net::Pcap::loop($pcap, $count, \&callback, $user_data);
    sleep 1; # the device takes 1 second to answer
}
close($socket);

sub callback 
{
    my ($user_data, $header_ref, $packet) = @_;
    $ip = NetPacket::IP->decode(eth_strip($packet));
    $tcp = NetPacket::TCP->decode($ip->{data});
    if ( $tcp->{src_port} == 6008 )
        {
$payload = $tcp->{data};        
print "$ip->{src_ip}:$tcp->{src_port} --> $ip->{dest_ip}:$tcp->{dest_p
+ort} Payload: $payload\n";
        }

}

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In reply to Re^13: IO::Socket Listen by Secalles
in thread IO::Socket Listen by Secalles

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