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

http.createServer(function(req, res) {

  var newFile = fs.createWriteStream('destination.jpg');
  var fileBytes = req.headers['content-length'];
  var uploadedBytes = 0;

  req.on('readable', function() {
    var chunk = null;
    while(null !== (chunk = req.read())){
      uploadedBytes += chunk.length;
      var progress = (uploadedBytes / fileBytes) * 100;
      res.write("Progress: " + parseInt(progress, 10) + "%\n");
    }
  });

  req.on('end', function() {
    res.end('uploaded!');
  });

  req.pipe(newFile);

}).listen(8080);

// run with `curl --upload-file <your-file.jpg> http://localhost:8080`