PHPリアルタイム通信機能のオンライン会議システムへの応用分析

composer require cboden/ratchet

use RatchetMessageComponentInterface;
use RatchetConnectionInterface;

class WebsocketServer 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})
";
    }

    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 "Connection {$conn->resourceId} has disconnected
";
    }

    public function onError(ConnectionInterface $conn, Exception $e) {
        echo "An error has occurred: {$e->getMessage()}
";
        $conn->close();
    }
}

$server = new RatchetWebSocketWsServer(new WebsocketServer());
$server->run();

var socket = new WebSocket('ws://localhost:8000');

socket.onopen = function(event) {
    console.log('Connected to WebSocket server');
};

socket.onmessage = function(event) {
    console.log('Received message: ' + event.data);
};

socket.onclose = function(event) {
    console.log('Disconnected from WebSocket server');
};

socket.onerror = function(event) {
    console.log('An error occurred: ' + event);
};

function sendMessage(message) {
    socket.send(message);
}