How to make WebSockets work on HTTPS?

Question

Node.js

I recently switched the server to HTTPS, after the transition WebSockets stopped working.

The protocol has been changed from ws to wss on the client. On the server (running on NODE JS), certificate files were also connected and the necessary settings were made. As a result, now an error is thrown on clients:

WebSocket connection to ' wss://XXX.XX.XXX.XXX:4433/ ' failed: WebSocket opening handshake was canceled

Server side code in Node JS:

var https = require('https');
    var WebSocketServer = require('ws'), fs = require('fs');
    var port = 4433; 
    var app	= null;

    var processRequest = function( req, res ) {
        res.writeHead(200);
        res.end("All glory to WebSockets!\n");
    };

    app = https.createServer({
        key: fs.readFileSync('/etc/nginx/ssl/server.key'),
        cert: fs.readFileSync('/etc/nginx/ssl/bundle.crt'),
    requestCert: true,
    rejectUnauthorized: false,
    }, processRequest ).listen(port);

    var webSocketServer = new WebSocketServer.Server( { server: app } );

How to make Websockets friends with HTTPS?

Answer 1

Obviously the browser sends your certificate
to hell