Well, in some way, Blitzplay is based on peer2peer connection too.
Basically, in UDP, you have peers, that can connect to other peers. If you consider one peer as beeing the server (so it broadcasts all the messages), then it is a client/server (a client/server is always an abstract of peer2peer).
So, if you use a peer2peer connection and you decide who is the server, you can of course select other host when one leaves...
This is not easy to explain, but i can guarantee that you can do it (if i wrap all the peer functions of course, xD)
Basically, in UDP, you have peers, that can connect to other peers. If you consider one peer as beeing the server (so it broadcasts all the messages), then it is a client/server (a client/server is always an abstract of peer2peer).
So, if you use a peer2peer connection and you decide who is the server, you can of course select other host when one leaves...
This is not easy to explain, but i can guarantee that you can do it (if i wrap all the peer functions of course, xD)