Session is NULL Memcached
I ahve just installed Memcached and used tutorial to set up the server.

This is my push-server.php
```php
<?php
use Ratchet\Session\SessionProvider;
use Symfony\Component\HttpFoundation\Session\Storage\Handler;

    require dirname(__DIR__) . '/vendor/autoload.php';

    $loop   = React\EventLoop\Factory::create();
    $pusher = new MyApp\Pusher;
	
	$memcached = new Memcached;
    $memcached->addServer('localhost', 11211);
	
    // Listen for the web server to make a ZeroMQ push after an ajax request
    $context = new React\ZMQ\Context($loop);
    $pull = $context->getSocket(ZMQ::SOCKET_PULL);
    $pull->bind('tcp://127.0.0.1:5555'); // Binding to 127.0.0.1 means the only client that can connect is itself
    $pull->on('message', array($pusher, 'onBlogEntry'));

    // Set up our WebSocket server for clients wanting real-time updates
    $webSock = new React\Socket\Server('0.0.0.0:8080', $loop); // Binding to 0.0.0.0 means remotes can connect
    $webServer = new Ratchet\Server\IoServer(
        new Ratchet\Http\HttpServer(
        	new Ratchet\Session\SessionProvider(
            	new Ratchet\WebSocket\WsServer(
	                new Ratchet\Wamp\WampServer(
	                    $pusher
	                )
				),new Handler\MemcachedSessionHandler($memcached)
            ) 
        ),
        $webSock
    );

    $loop->run();
```

And onOpen function:
```php
public function onOpen(ConnectionInterface $conn) {
    	$this->clients->attach($conn);
		$this->users[$conn->resourceId] = $conn;
		
		var_dump($conn->Session->all());
		
        echo "New connection! ({$conn->resourceId})\n";
		
    }
```

Var dump response:

array(0) {
}
New connection! (62)

Is it something I did not set up right?


EDIT: 
var_dump for $conn->httpRequest->getHeader('cookie'); return:
`
array(1) {
  [0]=>
  string(376) "_ga=GA1.2.1243927159.1515344807; _at_id.eig.eigorem.5517=9cc380a97448ae97.1515344809.1.1515344809.1515344809.0.0.00H; addshoppers.com=2%7C1%3A0%7C10%3A1515344811%7C15%3Aaddshoppers.com%7C44%3AZDcwNmViZGMxMGQ1NDM4OWFiOTllOGM3YzA5MWZmYjI%3D%7Ca78ac69b89c6626730b88e9b11a0488e6f4204c8a98bf3ae260c973e5be7bb3e; timezone=Europe/Helsinki; ci_session=0g3912q6d4q2go4hme61b0otde12po3q"
}
`
I need this to send message to a particular user. I want to add database user ID to connection.