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First you will have to know a few basics. Servers are
actually programs that "listen to ports". A port is a integer, since the
server is listening to it, a client can send a request to connect with
it. once you have connected to it, there is a line open for communications
between the two programs (Server/Client). The socket contains both an output
stream and an inputstream, untill it is closed.
You can think about a socket connection as a telephone
call. When you dial you send a request to the recipient to connect to you
(connection request). If the person you wish to talk too is at home and
hears the phone, he/she may pick up the phone (connection accepted), or
they can ignore you if they are home or they may be away (connection refused).
When either one of the persons in the conversation hangs
up the phone, the connection is closed. There will be no sense in keeping
the connection up, so the other one hangs up and closes his/her connection.
Now onto the tutorial
Ps.
I any experienced programmers finds this explenation
about sockets silly and/or lousy. Please let me know at per_westvik@hotmail.com