upload fix

common.js

  if (upload) {
    upload.on('data', function(buf) {
        console.log('data');
        rstream.write(buf);
      });
    upload.on('end', function() {
        console.log('end');
        rstream.end();
      });
    //upload.pipe(rstream);                                                                                                                                                                                                                                                        
  }