node proxy with basic auth

node-proxy.js

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

const port = 8128;
const username = 'username';
const password = 'password';

const authBuffer = Buffer.from(username + ':' + password, 'ascii');
const authToken = 'Basic ' + authBuffer.toString('base64');

const proxy = httpProxy.createProxyServer({});

const server = http.createServer((req, res) => {
  var authHeader = req.headers['proxy-authorization'];
  if (authHeader === authToken) {
    console.log('[%s] [forward] %s', new Date, req.url);
    proxy.web(req, res, {
      target: req.url
    });
  }
  else {
    console.error('[%s] [auth failed %s] %s', new Date, authHeader, req.url);
    res.statusCode = 404;
    res.end();
  }
});

server.timeout = 600000;

server.on('clientError', (err, socket) => {
  console.error('[%s] [error %s] %s', new Date, err.message);
  socket.end('HTTP/1.1 400 Bad Request\r\n\r\n');
});

console.log("listening on port %d", port)
server.listen(port);