look into unpn api for discovery [windows]

[guruofquality]

I think that the unpn daemon might be able to see the endpoints advertised by SSDP, that way we can talk to the daemon which has been sitting around and watching the network rather than opening a new SSDP endpoint and waiting for it to discover.

• docs https://msdn.microsoft.com/en-us/library/windows/desktop/aa382297(v=vs.85).aspx