http.createServer(function (r) {
  if (r.method == 'GET') {
    r.writeResponse(200, {'Content-type': 'text/plain'});
    r.write('hello world\n');
    r.close();
  } else if if (r.method == 'POST') {
    r.writeResponse(200, {'Content-type': 'text/plain'});
    r.close();
  } else {
    r.startResponse(500, {'Content-type': 'text/plain'});
    r.write('error\n');
    r.close();
  }
});


// upload
//
http.createServer(function (r) {
  var bytes = 0;
  r.addListener('data', function (d) {
    bytes += d.length;
  });
  r.addListener('end', function () {
    r.writeResponse(200, {'Content-type': 'text/plain'});
    r.write('you uploaded ' + bytes + ' bytes\n');
    r.close();
  });
});