Nat and and Proxy traversal for P2P connections

[mercadoa]

What network environments are supported (local IP, public IP, dynamic IP addresses, public DNS names, NAT traversal, VPN, Window proxies with/without NTLM authentication, IPoAC etc.)?

Do we care at all, or do we consider this something that users should take care of?

Note, that Haskells http clients, unlike many standard libraries from other languages, don't support windows HTTP proxies. A work-around (that is common in Haskell network applications) can be the usage of curl as http client, which has reasonable support for windows proxies.