Simple proxy made by node.js

node-simple-proxy.js

var http = require('http');
var url  = require('url');

var proxy = http.createServer(function(req, res) {
    var request = url.parse(req.url);
    options = {
        host:    request.hostname,
        port:    request.port || 80,
        path:    request.path,
        method:  req.method,
        headers: req.headers,
    };

    var backend_req = http.request(options, function(backend_res) {
        res.writeHead(backend_res.statusCode, backend_res.headers);
        backend_res.on('data', function(chunk) {
            res.write(chunk);
        });
        backend_res.on('end', function() {
            res.end();
        });
    });

    req.on('data', function(chunk) {
        backend_req.write(chunk);
    });

    req.on('end', function() {
        backend_req.end();
    });

});

proxy.listen(8000);

Thanks :D

8 years later, little refactor

const http = require('http');
const url = require('url');

const proxy = http.createServer((req, res) => {

    const request = url.parse(req.url);

    const options = {
        host:    request.hostname,
        port:    request.port || 80,
        path:    request.path,
        method:  req.method,
        headers: req.headers,
    };

    console.log(`${options.method} http://${options.host}${options.path}`);

    const backend_req = http.request(options, (backend_res) => {

        res.writeHead(backend_res.statusCode, backend_res.headers);

        backend_res.on('data', (chunk) => {
            res.write(chunk);
        });

        backend_res.on('end', () => {
            res.end();
        });
    });

    req.on('data', (chunk) => {
        backend_req.write(chunk);
    });

    req.on('end', () => {
        backend_req.end();
    });

});

proxy.listen(8080);

Thanks :D
This version proxies to a https upstream:

const http = require('http');
const https = require('https');
const url = require('url');

const proxy = https.createServer((req, res) => {

    const request = url.parse(req.url);

    const options = {
        host:    request.hostname,
        port:    request.port || 443,
        path:    request.path,
        method:  req.method,
        headers: req.headers,
    };

    console.log(`${options.method} https://${options.host}${options.path}`);

    const backend_req = https.request(options, (backend_res) => {

        res.writeHead(backend_res.statusCode, backend_res.headers);

        backend_res.on('data', (chunk) => {
            res.write(chunk);
        });

        backend_res.on('end', () => {
            res.end();
        });
    });

    req.on('data', (chunk) => {
        backend_req.write(chunk);
    });

    req.on('end', () => {
        backend_req.end();
    });

});

proxy.listen(8080);

@lucaswxp you made an error line 18 : https.request must be http.request. :)