连接到 websocket 服务器：从 javascript 正常，从 php 不正常

Question

I am using socketio to run a websocket server.

var fs = require('fs');
var options = {
  key: fs.readFileSync('/etc/letsencrypt/live/my.domain.be/privkey.pem'),
  cert: fs.readFileSync('/etc/letsencrypt/live/my.domain.be/fullchain.pem')
};
var app = require('https').createServer(options)
  , io = require('socket.io').listen(app)

app.listen(6666);

Connecting to it from javascript (using socket.io client) works fine.

var socket = io.connect('wss://my.domain.be:6666');

This works also :

var socket = io.connect('https://my.domain.be:6666');

Now I want to connect using php. I found a simple php client here : How can I send data/text from PHP using WebSocket to process?

But I see no incoming connection when using :

$WebSocketClient = new WebsocketClient('wss://my.domain.be', 6666);
$WebSocketClient->sendData("MyUserNameFromPHP");

And I get the error :

Error: 22145040:Unable to find the socket transport "wss" - did you forget to enable it when you configured PHP?

When using :

$WebSocketClient = new WebsocketClient('https://my.domain.be', 6666);

I get the error :

Error: 10905616:Unable to find the socket transport "https" - did you forget to enable it when you configured PHP?

When using tls:// or ssl:// I get no output at all (and still no connection on my websocket server).

So what am I missing to make a websocket connection from my php code ?

Answer 1

https://stackoverflow.com/a/61808878/3701985 please try my answer on another similar thread, I actually tried multiple solutions and now just want to provide answer which worked for me. https://github.com/ratchetphp/Pawl