Simple HTTPS express 4.x server

app.js

// Create self-signed certificate using $ openssl req -x509 -newkey rsa:2048 -keyout key.pem -out cert.pem -days 365
// Key is certificate key and cert.pem is certificate file

var fs = require('fs'),
    https = require('https'),
    express = require('express'),
    app = express();

    https.createServer({
      key: fs.readFileSync('key.pem'),
      cert: fs.readFileSync('cert.pem')
    }, app).listen(55555);

    app.get('/', function (req, res) {
      res.header('Content-type', 'text/html');
      return res.end('<h1>Hello, Secure World!</h1>');
    });