client program connects to the server (fd a)
client program opens the windows etc.
client program forks.

   parent:
     wait for the child to connect.
     go into select loop (blocking)
        was it the server :---> paint the incoming message
        was it the child  :---> send message to server
        was it the child and user wants to quit:-> shutdown
            (remember to kill child).     

   child:
     connect to parent
     loop: if user types something send to parent