Proxy for basic auth.

proxy.js

// Usage: USER=user PASSWORD=pw TARGET=http://localhost:3838 PORT=8080 node proxy.js
var http = require('http'),
    auth = require('basic-auth'),
    httpProxy = require('http-proxy');

var proxy = httpProxy.createProxyServer({});

var server = http.createServer(function(req, res) {

  var credentials = auth(req)

  if (!credentials || credentials.name !== process.env.USER || credentials.pass !== process.env.PASSWORD) {
    res.statusCode = 401
    res.setHeader('WWW-Authenticate', 'Basic realm="example"')
    res.end('Access denied')
  } else {
    proxy.web(req, res, { target: process.env.TARGET });
  }

});

server.listen(process.env.PORT);