About http-proxy :<\/h3>\n
Http-proxy is a node module developed by Nodejitsu, one of the leading Node.js hosting provider. This module will help us to write Reverse proxy in Node.js very easily.<\/p>\n
Project installation :<\/h3>\n
Create new Node.js project and create package.json file. It is recommended to use npm init<\/strong> command to generate one.<\/p>\n Once done use following command to install Express.js and http-proxy.<\/p>\n In order to run our reverse proxy server we need some resource server from which Proxy will fetch data. In order to do so, let’s develop three Express server running on Port 3001,3002,3003 respectively.<\/p>\n app.get(‘\/app1’,function(req,res) { Copy paste same code for other servers too and change the text.<\/p>\n Here is our simple proxy server code in express.js with multiple targets.<\/p>\n app.all(“\/app1\/*”, function(req, res) { app.all(“\/app2\/*”, function(req, res) { app.all(“\/app3\/*”, function(req, res) { Put all server in running mode, including proxy one. Note the servers are as follows :<\/p>\n ==> localhost:3000 – Reverse proxy server.npm install --save express http-proxy<\/code><\/p>\nServer code<\/h3>\n
\nvar express = require(\"express\");
\nvar app = express();<\/code><\/p>\n<\/code><\/code><\/p>\n
\nres.send(“Hello world From Server 1”);
\n});<\/p>\n
\n<\/code><\/p>\napp.listen(3001);
\n<\/code><\/p>\nProxy Server Code<\/h3>\n
\nvar express = require('express');
\nvar app = express();
\nvar httpProxy = require('http-proxy');
\nvar apiProxy = httpProxy.createProxyServer();
\nvar serverOne = 'http:\/\/localhost:3001',
\nServerTwo = 'http:\/\/localhost:3002',
\nServerThree = 'http:\/\/localhost:3002';<\/code><\/p>\n<\/code><\/code><\/p>\n
\nconsole.log(‘redirecting to Server1’);
\napiProxy.web(req, res, {target: serverOne});
\n});<\/p>\n<\/code><\/code><\/p>\n
\nconsole.log(‘redirecting to Server2’);
\napiProxy.web(req, res, {target: ServerTwo});
\n});<\/p>\n<\/code><\/code><\/p>\n
\nconsole.log(‘redirecting to Server3’);
\napiProxy.web(req, res, {target: ServerThree});
\n});<\/p>\n
\n<\/code><\/p>\napp.listen(3000);
\n<\/code>
\nYou can add as many targets you want and it will create a proxy for that. In order to check whether its working or not we need to first run all the servers and hit request to \/app1 and \/app2 etc.<\/p>\nRunning the app<\/h3>\n
\n== >localhost:3001 – First resource server.
\n…
\n![\"Screen](\"https:\/\/codeforgeek.com\/wp-content\/uploads\/2015\/12\/Screen-Shot-2015-12-06-at-12.17.20-am.png\")
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