basebuild-proxy-rules/example/simple.js

A proxy rules add-on module to the node-http-proxy library supporting multiple proxies

var http = require('http'),
    httpProxy = require('http-proxy'),
    HttpProxyRules = require('../');

module.exports = function spawnReverseProxy(cb) {

  // Set up proxy rules instance
  var proxyRules = new HttpProxyRules({
    rules: {
      '.*/test': 'http://localhost:8080/cool', // Rule (1)
      '.*/test2/': 'http://localhost:8080/cool2/', // Rule (2)
      '/remove-prefix': {removePrefix: true, target: 'http://localhost:8080/no-prefix/'}
    },
    default: 'http://localhost:8080' // default target
  });

  // Create reverse proxy instance
  var proxy = httpProxy.createProxy();

  // Create http server that leverages reverse proxy instance
  // and proxy rules to proxy requests to different targets
  http.createServer(function(req, res) {

    // a match method is exposed on the proxy rules instance
    // to test a request to see if it matches against one of the specified rules
    var proxySettings = proxyRules.match(req);
    if (proxySettings.target) {
      return proxy.web(req, res, proxySettings);
    }

    res.writeHead(500, { 'Content-Type': 'text/plain' });
    res.end('The request url and path did not match any of the listed rules!');
  }).listen(6010, cb);

};