11-07-2010
Is it a homework? In this case, post in the Homework forum...
You first need to define a protocol between your server and your client (on top of TCP), so that both understand the command "server is busy update", "select beer", "light/black", "select quantity", "liter/bottle"
On the client side:
- The client connects to the server.
- The client reads the answer from the server. Note that you will have to implement a timeout on the read().
- The client sends back answer to the server as appropriate.
On the server side:
- the server accepts the connection
- the server sends reply to the client
- the server reads reply from the client
The implementation of the "server busy update" is tricky: you'll have to fork (or create a new thread) upon each connection. Only one client can be served at a time; the other children/threads should take care of the "busy update".
HTH,
Loïc
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LEARN ABOUT OSX
notificationconf
notificationconf(1) BSD General Commands Manual notificationconf(1)
NAME
notificationconf -- configures how aosnotifyd responds to the NSServerNotificationCenter api
SYNOPSIS
notificationconf command [command_args]
DESCRIPTION
notificationconf is a utility to configure the push notification client functionality. The functionality is accessed by programs using the
NSServerNotification api, and this utility configures options for aosnotifyd that are outside the scope of the api.
USAGE
You must specify a command to select a specific function to perform. Each command accepts its own arguments.
COMMAND SUMMARY
Here are brief descriptions of all the notificationconf commands:
setpass hostname username
Configures a password and user name in the keychain that aosnotifyd can use to access a notification server. It prompts for the
password.
removepass hostname
Removes the keychain entry for the specified server
usessl hostname
Forces the client to use an SSL connection to the specified server. The server must have a certificate the client will validate.
nossl hostname
Sets the client back to the default state of not using an SSL connection for the specified server.
createnode hostname nodename username
Creates a node on the server to send notifications using. Before a client can subscribe to notifications with a given name, the
server must be configured with a node with a matching name. A user name is specified and the tool prompts for a password. This user
must have permissions to create notification nodes on the server.
FILES
/usr/bin/notificationconf
SEE ALSO
aosnotifyd(8)
Mac OS X 12 March 2009 Mac OS X