How can I get list of pool members?

I have clients of different 'weights'. This is a non-HTTP application. I can tell who the client from the initial login packet. I then lookup the weight of the client in a map I have in a class. All pools have a finite capacity. As clients connect to a member, it's capacity decreases by the weight of the client. I want to make sure I direct all connections to servers with enough capacity to handle them.