PHP Ratchet无法从其他设备连接

Question

I'm starting using PhP Ratchet socket. Following the guides I could made a simple chat application and it's working within the same computer. Example, if I open up chrome and firefox, I can interact send and receive messages, ok.

The problem is when I try to use the chat app from another computer, but within the same internet connection, or even when I tried to test it online.

When on lan, the other computers can't connect with the socket and online no one can connect.

By looking around, I found about using '0.0.0.0' or even port 5555 to enable connections from anyone. But even when using this, I can't connect.

How can I solve this? This is my files:

server.php

<?php

    use Ratchet\Server\IoServer;
    use Ratchet\http\HttpServer;
    use Ratchet\WebSocket\WsServer;

    require __DIR__ . '/../vendor/autoload.php';

    $server = IoServer::factory(
        new HttpServer(
            new WsServer(
                new Chat()
            )
        ), 2000, '0.0.0.0'
    );

    $server->run();

?>

And client js file:

var socket = new WebSocket('ws://127.0.0.1:2000');

Answer 1

127.0.0.1 will always point to the local device, which, on devices other than the socket server, will not point to the device that is hosting the socket server. If the device that is running the socket server is not routeable from the internet, you will not be able to connect to the socket from the internet.

You can test from other devices on your LAN by figuring out what your network IP is for the device that is running the server. Then in your client code, connect to that IP. It will probably be something close to 192.168.x.x, e.g. 192.168.1.12 (it could also be in the 10.x.x.x or 172.16.x.x address spaces). Then simply use that address to connect from your client script for testing:

var socket = new WebSocket('ws://192.168.1.12:2000');

You may still run into trouble if, for whatever reason, your network is configured to drop packets on port 2000. If so, it should be fairly easy for you to change to a different port for both your server and client.