#!perl

use warnings;
use strict;
use diagnostics;

use IO::Socket;
use POE qw(Wheel::SocketFactory Wheel::ReadWrite);

my $SERVER_ADDR = '192.168.178.6';
my $SERVER_PORT = '50099';


POE::Session->create(
    inline_states => {
        _start => sub {
            # Start the server.
            $_[HEAP]{server} = POE::Wheel::SocketFactory->new(
                RemoteAddress  => $SERVER_ADDR,
                RemotePort     => $SERVER_PORT,
                SocketProtocol => 'udp',
                SuccessEvent   => "on_connect",
                FailureEvent   => "on_server_error",
            );
        },
        on_connect => sub {
            # Begin interacting with the server.
			my $kernel        = $_[KERNEL];
            my $client_socket = $_[ARG0];
            my $io_wheel      = POE::Wheel::ReadWrite->new(
                Handle     => $client_socket,
                InputEvent => "on_receive_data",
                ErrorEvent => "on_connect_error",
            );
            $_[HEAP]{client}{ $io_wheel->ID() } = $io_wheel;

            $io_wheel->put( "login monitor monitor", "log on", );
			$kernel->yield('keepalive', $io_wheel, $kernel);
        },

        on_server_error => sub {
            # Shut down server.
            my ( $operation, $errnum, $errstr ) = @_[ ARG0, ARG1, ARG2 ];
            warn "Server $operation error $errnum: $errstr\n";
            delete $_[HEAP]{server};
        },
        on_receive_data => sub {
            # Handle client input.
            my ( $kernel, $input, $wheel_id ) = @_[ KERNEL, ARG0, ARG1 ];
            print "Received: $input\n";
        },
        on_connect_error => sub {
            # Handle client error, including disconnect.
            my $wheel_id = $_[ARG3];
            delete $_[HEAP]{client}{$wheel_id};
        },
        keepalive => sub {
            my ( $io_wheel, $kernel ) = @_[ ARG0, ARG1 ];
            $io_wheel->put( "keepalive" );
			$kernel->delay_add( 'keepalive' => 10 );
        },
    }
);

POE::Kernel->run();
exit;

##</code><code>##

        keepalive => sub {
            my ( $io_wheel, $kernel ) = @_[ ARG0, ARG1 ];
            $io_wheel->put( "keepalive" );
			$kernel->delay_add( 'keepalive' => 10 ); 
##</code><code>##

Uncaught exception from user code:
        Can't call method "put" on an undefined value at fac.pl line 59.
 at /usr/local/share/perl/5.14.2/POE/Kernel.pm line 1256
        POE::Kernel::_rethrow_kr_exception('POE::Kernel=ARRAY(0x88f2e8)') called at /usr/local/share/perl/5.14.2/POE/Kernel.pm line 1244
        POE::Kernel::run('POE::Kernel') called at fac.pl line 65