client procedure(not code)

client procedure:
1.input the server IP
2.connect to the server
3.send the user name to server and receive the number in index from server
4.open a new thread for receiving message from server
5.begin a loop
6.user input what he wants.  send message to another client or ask for a broadcast or transfer a file
7.due to what the user wants, make a message in fixed format and send to user.
8.keep loop until user input 'quit' then quit loop
9.close the thread and all socket.