OK, so some of the stuff I have pointed to lately hasn’t been “hard core.”
This should give you some ideas about building communications (including servers) in connection with topic maps.
From the webpage:
So far we’ve had some fun dealing with Erlang itself, barely communicating to the outside world, if only by text files that we read here and there. As much of relationships with yourself might be fun, it’s time to get out of our lair and start talking to the rest of the world.
This chapter will cover three components of using sockets: IO lists, UDP sockets and TCP sockets. IO lists aren’t extremely complex as a topic. They’re just a clever way to efficiently build strings to be sent over sockets and other Erlang drivers.