HTTPS Proxy Server in node.js

index.js

// via http://stackoverflow.com/questions/8165570/https-proxy-server-in-node-js
//  Install npm dependencies first
//  npm init
//  npm install --save url@0.10.3
//  npm install --save http-proxy@1.11.1
// 	node ./index.js
var httpProxy = require("http-proxy");
var http = require("http");
var url = require("url");
var net = require('net');

var server = http.createServer(function(req, res) {
	var urlObj = url.parse(req.url);
	var target = urlObj.protocol + "//" + urlObj.host;

	console.log("Proxy HTTP request for:", target);

	var proxy = httpProxy.createProxyServer({});
	proxy.on("error", function(err, req, res) {
		console.log("proxy error", err);
		res.end();
	});

	proxy.web(req, res, {
		target: target
	});
}).listen(8080); //this is the port your clients will connect to

var regex_hostport = /^([^:]+)(:([0-9]+))?$/;

var getHostPortFromString = function(hostString, defaultPort) {
		var host = hostString;
		var port = defaultPort;

		var result = regex_hostport.exec(hostString);
		if (result != null) {
			host = result[1];
			if (result[2] != null) {
				port = result[3];
			}
		}

		return ([host, port]);
	};

server.addListener('connect', function(req, socket, bodyhead) {
	var hostPort = getHostPortFromString(req.url, 443);
	var hostDomain = hostPort[0];
	var port = parseInt(hostPort[1]);
	console.log("Proxying HTTPS request for:", hostDomain, port);

	var proxySocket = new net.Socket();
	proxySocket.connect(port, hostDomain, function() {
		proxySocket.write(bodyhead);
		socket.write("HTTP/" + req.httpVersion + " 200 Connection established\r\n\r\n");
	});

	proxySocket.on('data', function(chunk) {
		socket.write(chunk);
	});

	proxySocket.on('end', function() {
		socket.end();
	});

	proxySocket.on('error', function() {
		socket.write("HTTP/" + req.httpVersion + " 500 Connection error\r\n\r\n");
		socket.end();
	});

	socket.on('data', function(chunk) {
		proxySocket.write(chunk);
	});

	socket.on('end', function() {
		proxySocket.end();
	});

	socket.on('error', function() {
		proxySocket.end();
	});

});