Including dependencies of Ratchet Websocket

Hi, i am trying to implement Ratchet Websocket into my Cakephp App but i am having some troubles doing it.

For this I started with the hello world tutorial from: Ratchet -Tutorial: Your first app

Instead of the /src/Chat.php I created a WebsocketsController but it has almost the same content.
I have placed the /bin/chat-server.php . into my webroot/bin/ folder :


namespace App\Controller;
use Ratchet\Server\IoServer;

require dirname(DIR) . ‘/vendor/autoload.php’;

$server = IoServer::factory(
new Chat(), <---- its not working



But if i try to execute the server in the shell I get an Error:

/webroot/bin$ php chat-server.php
PHP Fatal error: Uncaught Error: Class ‘App\Controller\Chat’ not found in /var/www/html//cakephp/webroot/bin/chat-server.php:13
Stack trace:
#0 {main}
thrown in /var/www/html//cakephp/webroot/bin/chat-server.php on line 13

I think i have to use the WebsocketsController in the server script but I dont know how…

any Idea?


You have told this file that it’s part of the App\Controller namespace (which is not going to be true, because you’ve put it in the webroot/bin folder, not src/Controller). Then you’ve tried to create an object without telling it where the class comes from, so it’s assuming the local namespace. Hence App\Controller\Chat is what it’s looking for. But you said you didn’t even make a Chat class, you put it in WebsocketsController. Honestly don’t think that a controller is where you want to put that implementation. So there’s a long going wrong here, to be fixed a bit at a time. Hopefully what I’ve said here will help you to at least get closer, and I’d suggest doing some basic reading on PHP namespaces to understand what you need to do to fix the rest.


the WebsocketsController looks like that:

use Ratchet\MessageComponentInterface;
use Ratchet\ConnectionInterface;

class WebsocketsController extends AppController implements MessageComponentInterface

    protected $clients;
    public function __construct() {
        $this->clients = new \SplObjectStorage;
    public function onOpen(ConnectionInterface $conn) {
        // Store the new connection to send messages to later
        echo "New connection! ({$conn->resourceId})\n";
    public function onMessage(ConnectionInterface $from, $msg) {
        $numRecv = count($this->clients) - 1;
        echo sprintf('Connection %d sending message "%s" to %d other connection%s' . "\n"
            , $from->resourceId, $msg, $numRecv, $numRecv == 1 ? '' : 's');
        foreach ($this->clients as $client) {
            if ($from !== $client) {
                // The sender is not the receiver, send to each client connected
    public function onClose(ConnectionInterface $conn) {
        // The connection is closed, remove it, as we can no longer send it messages
        echo "Connection {$conn->resourceId} has disconnected\n";
    public function onError(ConnectionInterface $conn, \Exception $e) {
        echo "An error has occurred: {$e->getMessage()}\n";


i guess its correct… i have no idea about how to use it in /webroot/bin

Controllers are meant to be used through the Cake framework, which sets up request and response objects, runs middleware, etc. That’s not at all the case here. What you are trying to make is a utility class, not a controller.

1 Like

well i got it just here from the forum:

for them its working!

Well, there are multiple things going wrong here. Here are the points that I think would solve the issue for you:

  1. Move webroot/bin/chat-server.php file to root of the project. I.e. /var/www/html/cakephp/chat-server.php. Only put files that are publicly accessible in webroot folder. Also, remove namespace App\Controller; code from the file, it’s not needed as you are not in any namespace.

  2. Place src/Chat.php code to src/Websocket/Chat.php file instead of WebsocketsController. As suggested by others, controllers are specific to CakePHP framework, you don’t need any framework specific things to build websocket server using Ratchet.

Once above two points are done. Start the chat server:

php chat-server.php

The server will be listening to port 8080 i.e. https://your-domain.tld:8080.

okay! thank you ishan! like that i’ve got it working… the file structure should be like in your suggestion and namespace should also be removed! HTTP Controllers (normal cake controllers) are NOT the same as Websockets Controllers (Ratchet)…