How to create an HTTPS server in Node.js?

const crypto = require('crypto'),

  fs = require("fs"),

  http = require("http");



var privateKey = fs.readFileSync('privatekey.pem').toString();

var certificate = fs.readFileSync('certificate.pem').toString();



var credentials = crypto.createCredentials({key: privateKey, cert: certificate});



var handler = function (req, res) {

  res.writeHead(200, {'Content-Type': 'text/plain'});

  res.end('Hello World\n');

};



var server = http.createServer();

server.setSecure(credentials);

server.addListener("request", handler);

server.listen(8000);

var express = require('express');

var https = require('https');

var http = require('http');

var fs = require('fs');



// This line is from the Node.js HTTPS documentation.

var options = {

  key: fs.readFileSync('test/fixtures/keys/agent2-key.pem'),

  cert: fs.readFileSync('test/fixtures/keys/agent2-cert.cert')

};



// Create a service (the app object is just a callback).

var app = express();



// Create an HTTP service.

http.createServer(app).listen(80);

// Create an HTTPS service identical to the HTTP service.

https.createServer(options, app).listen(443);

var https = require('https');

var fs = require('fs');



var httpsOptions = {

    key: fs.readFileSync('path/to/server-key.pem'),

    cert: fs.readFileSync('path/to/server-crt.pem')

};



var app = function (req, res) {

  res.writeHead(200);

  res.end("hello world\n");

}



https.createServer(httpsOptions, app).listen(4433);

var http = require('http');

var https = require('https');

var fs = require('fs');



var httpsOptions = {

    key: fs.readFileSync('path/to/server-key.pem'),

    cert: fs.readFileSync('path/to/server-crt.pem')

};



var app = function (req, res) {

  res.writeHead(200);

  res.end("hello world\n");

}



http.createServer(app).listen(8888);

https.createServer(httpsOptions, app).listen(4433);