node_proxy.js

var http = require('http');
var url = require('url');

http.createServer(function (req1, res1) {
  var tmp = url.parse(req1.url);
  var options = {
    "host": tmp.hostname,
    "port": tmp.port || 80,
    "path": tmp.pathname + (tmp.search ? tmp.search : ''),
    "method": req1.method,
    "headers": req1.headers
  };
  var req2 = http.request(options, function (res2) {
    res1.writeHead(res2.statusCode, res2.headers);
    res2.on('data', function (chunk) {
      res1.write(chunk);
    });
    res2.on('end', function () {
       res1.end();
    });
  });
  req1.on('data', function (chunk) {
    req2.write(chunk);
  });
  req1.on('end', function () {
    console.log(req1.method + " " + req1.url);
    req2.end();
  });
}).listen(8081);