Ratchet + Symfony3: how to get access to current server from outside

Here is my Symfony3 command that I'm using for websocket server purpose

    public function __construct(ChatFlowProcessor $chatManager, int $webSocketPort)
    {
        $this->chatManager = $chatManager;
        $this->webSocketPort = $webSocketPort;
        parent::__construct();
    }

    $server = IoServer::factory(
        new HttpServer(
            new WsServer(
                $this->chatManager
            )
        ),
        $this->webSocketPort
    );
    $server->run();

As you see, I've got a chatManager simply using Symfony3 autowiring. The service implements Ratchet MessageComponentInterface.

Now, I want to get access to the server from outside of the connection. I mean, send a message to websocket client using my chatManager, apparently I need to get access to chatManager instance, that stored in WsServer and keep information about all active connections.

Is it possible? Thanks.

from Ratchet + Symfony3: how to get access to current server from outside