title: How to Find Connected MQTT Client Details
body: <p>Is there any way we can find about all the connected client details(IP &amp; name) from another client? I know there is a topic "$SYS/broker/clients/active" which gives the number of currently connected clients but if I want to know more about each connected client, is there any way?</p>
  
  <p>I'm developing a solution where number of client will be connected (using Wireless network) to MQTT broker located on a server. I will also have another client running on the same machine and connected to the broker which will observe if any new client connected with the broker or for a gets disconnected client. I can see message on broker console when a new client connects or connected client gets disconnected. Can we get something similar from a client connected to the broker? Please suggest what would be the best possible way to achieve this?</p>
  
  <p>Thanks in advance.</p>
  
  <p>-Dilip</p>