The assignment is simple.  Make your previous client and server work with select and poll.

Success means that each client can talk to one another.  The server should hanldle multiple simoltanious clients.  Each client can handle both keyboard and network input at the same time.

+1 Client modified
+1 Server modified
+1 Uses select
+1 Uses poll
+2 A message to the server is broadcast appropriatly

Out of 6 points