node-http-proxy-load-test.js

// Load testing of http-proxy node library.

// $ docker run -it --rm bash:4.4
// $ docker run -it --rm node:12-alpine sh
// # mkdir -p /test && cd /test && wget https://github.com/tsenart/vegeta/releases/download/v12.8.3/vegeta-12.8.3-linux-amd64.tar.gz && tar -xvf vegeta-12.8.3-linux-amd64.tar.gz
// # wget -O - https://gist.githubusercontent.com/ZitRos/c0d0ea80c0de4d018121c80c5d2c3653/raw/node-http-proxy-load-test.js > index.js && npm install http-proxy
// # node index.js & sleep 0.5 && echo 'GET http://localhost/favicon.ico' | ./vegeta attack -rate 15 -duration 5s | ./vegeta report -every 1s && pkill node

const http = require('http');
const httpProxy = require('http-proxy');
const port = 80;

var proxy = httpProxy.createProxyServer({});

proxy.on('error', (err, req, res) => {
  console.log('ERROR', err);
  res.writeHead(502, {});
  res.end('');
});

proxy.on('open', function (proxySocket) {
  //
});

proxy.on('proxyReq', function(proxyReq, req, res, options) {
  //
});

var server = http.createServer(function(req, res) {
  proxy.web(req, res, {
    target: 'https://www.google.com',
    changeOrigin: true
  });
});

console.log("listening on port " + port);
server.listen(port);