Nodejs + Express : Simple proxy

expressProxy.js

/**
 * Simple image proxy for Nodejs
 * @param  {Express} app Express app
 * @return {function}
 */
var http = require('http'),
	url = require('url');

module.exports = function (app) {
	app.get('/proxy/:image', function (request_from_client, response_to_client) {
		var image_url = decodeURIComponent(request_from_client.params.image),
			image = url.parse(image_url);

		var options = {
			hostname: image.host,
			port: image.port || 80,
			path: image.path,
			method: 'GET'
		};

		var image_get_request = http.get(options, function (proxy_response) {
			proxy_response.headers = request_from_client.headers;
			proxy_response.pipe(response_to_client);
		});
		image_get_request.end();
	});
}

proxyTest.js

/**
 * Test the Proxy server running, requires the server to be running locally for the tests
 */
var should = require('should'),
    request = require('supertest');

describe('Proxy server', function () {
	describe('Get version', function () {
		it('should return an image', function (done) {
			var port = process.env.PORT || 5000;
			request('http://localhost:' + port)
				.get('/proxy/https%3A%2F%2Fwww.google.com%2Fimages%2Fsrpr%2Flogo11w.png')
				.expect(200)
				.expect('Content-Type', 'image/png')
				.end(function (err, res) {
					done()
				})
		});
	});
});

usage.js

var express = require('express'),
    app = express();
    
module.exports = function () {
	var port = process.env.PORT || 5000;

	var server = app.listen(port, function () {
		console.log('Proxy server started on %d', server.address().port);
	});
	
	require('./expressProxy.js')(app);
});

For a more advanced proxy check out: https://www.npmjs.org/package/connect-image-proxy

Hi
Where is your bad words list? I need it for my application if you mind please.

Hey @jasonMisaq, I assume you are referring to the old one on my blog, but read the disclaimer there before using.