title: MQTT payload size, packet loss, transmission time
body: <p>I have an MQTT client on an Intel Galileo board and the broker on my desktop. I'm interested in measuring </p>
  
  <ol>
  <li>The payload size of a message </li>
  <li>packet loss rates</li>
  <li>The transmission time between the client and the broker.</li>
  </ol>
  
  <p>Could anybody suggest the best way to do this? </p>
  
  <p>Thanks</p>