This should be transparent, but it may cause regressions.
The idea here is that now all players, including the host of the server,
talk to the server through TCP/IP networking. This significantly reduces
our codepaths through netplay, and will prevent strange local-only bugs
from happening.
The cleanup isn't 100% finished yet. The NetPlay dialog still drives the
server through private APIs. I eventually want to sanction off the server
entirely, so all communication is done through TCP/IP. This will allow us
to have high-traffic public servers that can relay multiple games and
lobbies at a time, and split off channel and game management to people
other than the host.
This is all still just a pipe dream, though.
