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Top Forums Programming Need help about read() and write() on TCP/IP Post 302469601 by lixiao1212 on Sunday 7th of November 2010 06:05:11 AM
Old 11-07-2010
Quote:
Originally Posted by Loic Domaigne
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
thanks Loic but i just need to finish the part of client, so could you tell me how can i implement it? thanks again!!
 

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GEMS-CLIENT(1)							gems documentation						    GEMS-CLIENT(1)

NAME
gems-client - Show data transmitted by gems-server (1) SYNOPSIS
gems-client [-i] host [port] gems-client -h | -v DESCRIPTION
Connects to a computer running gems-server(1) to show in the local terminal the data transmitted, in real time. OPTIONS
host Hostname or IP address where the server is running. port TCP port used by the server. Default: 6666. -i Ignore server terminal size. If this option is not supplied, gems-client disconnects itself whenever the local terminal is smaller than the terminal associated to the server. -h Show a short help message. -v Show version information. FUNCTION KEYS
While gems-client is running, some keys have special functions: q Quit. a Enable/disable alarm blocking. When active, if the server transmits an alarm character ('a'), the client ignores it, so the alarm does not play. This is specially useful when many clients are present in the same room, to avoid the annoying simultaneous beeps. AUTHORS
Diego Essaya <dessaya@fi.uba.ar> Emiliano Castagnari <ecastag@fi.uba.ar> SEE ALSO
gems-server(1), script(1) gems AUGUST 2004 GEMS-CLIENT(1)
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