Is it possible to reject non secured (non ssl / wss) websockets with socket.io?

Question

I created a Websockets server with express and socket.io, here is the code of the server:

import express from 'express';
import { createServer } from 'node:http';
import { Server } from 'socket.io';

const app = express();
const httpServer = createServer(app);
const io = new Server(httpServer);

app.get('/', (req, res) => {
  res.sendFile(join(__dirname, 'index.html'));
});

let i = 0;
io.on('connection', (socket) => {
  socket.on('chat message', (msg) => {
    socket.emit('chat message', ++i + ' ' + msg);
  });
});

httpServer.listen(3000, () => {
  logger.log('server running');
});

It works fine with both http/ws and https/wss. Now, I would like to reject any Websocket connection without ssl. In other words, if the user try to connect with ws, the connection is rejected. The following client-side code illustrate my purpose:

// Should be rejected
const socket = io('ws://example.com');
socket.emit('chat message', 'Hello');

// Should be processed
const socket = io('wss://example.com');
socket.emit('chat message', 'Hello');

My app is deployed on a production server with cPanel. I don't know exactly how ssl is managed by cPanel, but the fact is that the above code when deployed on my server works with both http/ws and https/wss requests.