I am using XMPP.php (i.e XMPP Class) to create a chat application in GTalk. i have put the correct username and password of Gtalk but it is not working. the code i used (got it from GitHub.com)

<?php

  include 'XMPP.php';

  #Use XMPPHP_Log::LEVEL_VERBOSE to get more logging for error reports
  #If this doesn't work, are you running 64-bit PHP with < 5.2.6?
  $conn = new XMPPHP_XMPP('talk.google.com', 5222, 'username', 'pass', 'xmpphp', 'gmail.com',       $printlog=false, $loglevel=XMPPHP_Log::LEVEL_INFO);

try {
echo "Welcome 2 ";
$conn->connect(100, false, true);
$conn->processUntil('session_start');
$conn->presence();
$conn->message('someid@somewere.com', 'This is a test message!');
$conn->disconnect();
} catch(XMPPHP_Exception $e) {
echo "Fail";
die($e->getMessage());
}

?>

ve ben alıyorum hata (istisna) olduğu

Welcome 2 Fail Could not connect before timeout.

i Unix tabanlı web sunucusu kullanıyorsanız am, Chatserver ya da böyle bir şey çalıştırmak için gerekli herhangi bir yazılım var ... yardım lütfen!