wsengine.php

<?php

use Ratchet\MessageComponentInterface;
use Ratchet\ConnectionInterface;

// Make sure composer dependencies have been installed
require __DIR__ . '/vendor/autoload.php';

/**
 * Websocket Engine for ratchet-websocket-sample.
 * This websocket engine is build from several MessageComponent:
 *      
 *      - MyChat: send and receive chat message from other users
 *      - Mouse: send and receive mouse coordinate while hovering in browser area
 *      - SimpleSketch: Draw freely and make the change are display to all other who accessed the canvas
 *      - MovingBall: make the ball move and other client will see the ball moving
 *      - LiveEditor: send the modified HTML text to the viewer immediately
 */
class MyChat implements MessageComponentInterface {
    protected $clients;

    public function __construct() {
        $this->clients = new \SplObjectStorage;
    }

    public function onOpen(ConnectionInterface $conn) {
        $this->clients->attach($conn);
        echo "New connection! ({$conn->resourceId})\n";
    }

    public function onMessage(ConnectionInterface $from, $msg) {
        foreach ($this->clients as $client) {
            if ($from != $client) {
                $client->send($from->resourceId.": ".$msg);
                echo $msg;
            }
        }
    }

    public function onClose(ConnectionInterface $conn) {
        $this->clients->detach($conn);
        echo "Close connection! ({$conn->resourceId})\n";
    }

    public function onError(ConnectionInterface $conn, \Exception $e) {
        $conn->close();
    }
}

class Mouse implements MessageComponentInterface {
    protected $clients;

    public function __construct() {
        $this->clients = new \SplObjectStorage;
    }

    public function onOpen(ConnectionInterface $conn) {
        $this->clients->attach($conn);
        echo "New connection! ({$conn->resourceId})\n";
    }

    public function onMessage(ConnectionInterface $from, $msg) {
        foreach ($this->clients as $client) {
            if ($from != $client) {
                $client->send($from->resourceId.": ".$msg);
            }
        }
    }

    public function onClose(ConnectionInterface $conn) {
        $this->clients->detach($conn);
        echo "Close connection! ({$conn->resourceId})\n";
    }

    public function onError(ConnectionInterface $conn, \Exception $e) {
        $conn->close();
    }
}

class SimpleSketch implements MessageComponentInterface {
    protected $clients;

    public function __construct() {
        $this->clients = new \SplObjectStorage;
    }

    public function onOpen(ConnectionInterface $conn) {
        $this->clients->attach($conn);
        echo "New connection! ({$conn->resourceId})\n";
    }

    public function onMessage(ConnectionInterface $from, $msg) {
        foreach ($this->clients as $client) {
            if ($from != $client) {
                $client->send($msg);
            }
        }
    }

    public function onClose(ConnectionInterface $conn) {
        $this->clients->detach($conn);
        echo "Close connection! ({$conn->resourceId})\n";
    }

    public function onError(ConnectionInterface $conn, \Exception $e) {
        $conn->close();
    }
}

class Counter implements MessageComponentInterface {
    protected $clients;

    public function __construct() {
        $this->clients = new \SplObjectStorage;
    }

    public function onOpen(ConnectionInterface $conn) {
        $this->clients->attach($conn);
        echo "New connection! ({$conn->resourceId})\n";
    }

    public function onMessage(ConnectionInterface $from, $msg) {
        foreach ($this->clients as $client) {
            if ($from != $client) {
                $client->send($msg);
            }
        }
    }

    public function onClose(ConnectionInterface $conn) {
        $this->clients->detach($conn);
        echo "Close connection! ({$conn->resourceId})\n";
    }

    public function onError(ConnectionInterface $conn, \Exception $e) {
        $conn->close();
    }
}

class MovingBall implements MessageComponentInterface {
    protected $clients;

    public function __construct() {
        $this->clients = new \SplObjectStorage;
    }

    public function onOpen(ConnectionInterface $conn) {
        $this->clients->attach($conn);
        echo "New connection! ({$conn->resourceId})\n";
    }

    public function onMessage(ConnectionInterface $from, $msg) {
        foreach ($this->clients as $client) {
            if ($from != $client) {
                $client->send($msg);
            }
        }
    }

    public function onClose(ConnectionInterface $conn) {
        $this->clients->detach($conn);
        echo "Close connection! ({$conn->resourceId})\n";
    }

    public function onError(ConnectionInterface $conn, \Exception $e) {
        $conn->close();
    }
}

class LiveEditor implements MessageComponentInterface {
    protected $clients;

    public function __construct() {
        $this->clients = new \SplObjectStorage;
    }

    public function onOpen(ConnectionInterface $conn) {
        $this->clients->attach($conn);
        echo "New connection! ({$conn->resourceId})\n";
    }

    public function onMessage(ConnectionInterface $from, $msg) {
        foreach ($this->clients as $client) {
            if ($from != $client) {
                $client->send($msg);
            }
        }
    }

    public function onClose(ConnectionInterface $conn) {
        $this->clients->detach($conn);
        echo "Close connection! ({$conn->resourceId})\n";
    }

    public function onError(ConnectionInterface $conn, \Exception $e) {
        $conn->close();
    }
}


// Run the server application through the WebSocket protocol on port 8080
$app = new Ratchet\App($httpHost='localhost', $port=8080, $address='0.0.0.0');

// Create a route for every MessageComponent
$app->route('/chat', new MyChat);
$app->route('/simplesketch', new SimpleSketch);
$app->route('/mouse', new Mouse);
$app->route('/movingball', new MovingBall);
$app->route('/counter', new Counter);
$app->route('/live_editor', new LiveEditor);
$app->route('/echo', new Ratchet\Server\EchoServer, array('*'));

$app->run();