title: How to see/monitor the SUBscribers to my zeromq PUBlisher?
body: <p>I am building a application in which I want a number of subscribers to be able to connect to my zeromq publisher. I'm now want to see some information about the subscribers; </p>
  
  <ul>
  <li>how many subscribers are connected?</li>
  <li>which ip addresses they are coming from?</li>
  </ul>
  
  <p>Does anybody know of a way to do this in zeromq (by using setsockopt for example) or is there a way that I can build this myself? More information on this would be very good.</p>