open a websocket with laravel in php

To open a WebSocket connection with Laravel in PHP, you can use the Ratchet library. Here's how you can set it up:

Install the Ratchet library via Composer:


main.php
composer require cboden/ratchet
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Create a new file Websocket.php in the app/Classes directory:


main.php
<?php

namespace App\Classes;

use Ratchet\MessageComponentInterface;
use Ratchet\ConnectionInterface;

class Websocket 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, $msg)
    {
        echo "Message received: {$msg}\n";
    }

    public function onClose(ConnectionInterface $conn)
    {
        $this->clients->detach($conn);
        echo "Connection {$conn->resourceId} has disconnected\n";
    }

    public function onError(ConnectionInterface $conn, \Exception $e)
    {
        echo "An error has occurred: {$e->getMessage()}\n";
        $conn->close();
    }
}
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This creates a class that implements the Ratchet MessageComponentInterface interface. We'll use this class to handle WebSocket connections.

Create a new route in your routes/web.php file:


main.php
use Ratchet\Http\HttpServer;
use Ratchet\WebSocket\WsServer;
use Ratchet\Server\IoServer;
use App\Classes\Websocket;

Route::get('/websocket', function () {
    $server = IoServer::factory(
        new HttpServer(
            new WsServer(
                new Websocket()
            )
        ),
        8080
    );

    $server->run();
});
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This route creates a WebSocket server that listens on port 8080 and uses the Websocket class we created earlier.

Start the server using Artisan:


main.php
php artisan serve
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You can now connect to the WebSocket server using a WebSocket client. Here's some sample JavaScript code:


index.tsx
var conn = new WebSocket('ws://localhost:8080/websocket');

conn.onopen = function() {
    console.log('Connected to websocket');
};

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

conn.onclose = function() {
    console.log('Connection closed');
};
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That's it! You now have a WebSocket server running in your Laravel application.

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