SSL を使用せずに Express.js と Node.js を使用して HTTPS サーバーを作成する方法

<code class="javascript">var express = require('express');
var https = require('https');
var http = require('http');
var fs = require('fs');

// SSL options with key and certificate
var options = {
  key: fs.readFileSync('test/fixtures/keys/agent2-key.pem'),
  cert: fs.readFileSync('test/fixtures/keys/agent2-cert.cert')
};

// Express app instance
var app = express();

// Create HTTP and HTTPS servers
http.createServer(app).listen(80); // HTTP service on port 80
https.createServer(options, app).listen(443); // HTTPS service on port 443</code>