EECS 482 Discussion: socket programming

A simple client-server application.

Operation:
1) Server listens for connections.
2) Client connects, server accepts.
3) Client sends BUFSIZE bytes.
4) Server receives BUFSIZE bytes and prints them as a string.
   Server then sends the exact same BUFSIZE bytes back.
   Server closes connection and exits.
5) Client receives BUFSIZE bytes, prints them, closes connection and exits.

Optional exercises left to the student:
 - Make the server able to handle more than one client.
   (i.e. the server should continue accepting connections after the first one)
 - Support multiple simultaneous clients.
 - Change the protocol to send an arbitrary-length message.
 - Change the client to send data read from standard input.
   This is similar to a program called 'netcat' (or 'nc' for short).
    - Bonus: allow the server to send replies at any time.
      (this one is trickier; ask me if you're interested)
 - Change the protocol to send other data besides ASCII strings.
    (Or wait for the discussion on RPC for this one)

 - And of course, clean up the code a bit to remove duplication. :-)

If you want to play around with this and get feedback, 
 feel free to fork the repo on github and try some of these tweaks.