echo.js

var http = require('http'),
    fs = require('fs'),
    path = require('path');



http.createServer(function(req, res) {

  console.log('======================');
  console.log(req.url);
  console.log(req.headers);
  var filename = '' + Date.now();
  var stream = fs.createWriteStream(path.join(__dirname, filename));
  req.pipe(stream);

  res.writeHead(400);
  res.end("400");

}).listen(1337, '127.0.0.1');