Hey everyone,

I note that the listener's add_service() callback has available to it the coordinates for the custom service that I am tracking. Whenever it comes online this callback can use get_service_info() to get the host and port.

I note that the listener's remove_service() callback cannot try to obtain the host and port of the service that just went offline by querying get_service_info(). The latter will return None.

My application would like to track a particular service and update a GUI accordingly. When the service comes online it's easy to add the host and port to some kind of GUI list, but I cannot figure out how to determine which server just went down when remove_service() callback is invoked.

How can I get this information?

Maybe I'm going about this all the wrong way, but presumably this is a common issue others have had in the past.