/** 
  * adding new socket client
  * @param $socketClient Socket_Client
  */
 public function add(Socket_Client $socketClient)
 {
     $unique = false;
     while ($unique == false) {
         $session = Session_Session::generate();
         foreach ($this->items as $items) {
             if ($items->getSession() == $session) {
                 continue;
             }
         }
         $unique = true;
     }
     $socketClient->setSession($session);
     $this->items[$socketClient->getSocketInstance()] = $socketClient;
 }