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C Socket Client/Server Fork Loop

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Old 01-22-2011
C Socket Client/Server Fork Loop
Hello people.

I'm trying to do something like a search engine.
Server runs in the background by using ./server & which has data from a textfile stored in an array.
Client then runs by using ./client
It will then prompt "Search for:"

For example, if I searched for Products called Instant Noodles
Server will return me result:
Product : Instant Noodle
Price : $10
If there's no such product, it will return "No such product"

I've already done it up to here.
Problem is, I want to make the client loop, after it finishes searching for a product, "Search for:" will appear again. The socket connection will only end when the user types in "end"
I can make it end by typing "end", but not the loop for search.
How can I do this?
I'm currently using the fork() command to handle multiple clients.

Thanks in advance.
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LEARN ABOUT DEBIAN

net::smtp::server::relay

Server::Relay(3pm)					User Contributed Perl Documentation					Server::Relay(3pm)

NAME

       Net::SMTP::Server::Relay - A simple relay module for Net::SMTP::Server.

SYNOPSIS

	 use Carp;
	 use Net::SMTP::Server;
	 use Net::SMTP::Server::Client;
	 use Net::SMTP::Server::Relay;

	 $server = new Net::SMTP::Server('localhost', 25) ||
	   croak("Unable to handle client connection: $!
");

	 while($conn = $server->accept()) {
	   # We can perform all sorts of checks here for spammers, ACLs,
	   # and other useful stuff to check on a connection.

	   # Handle the client's connection and spawn off a new parser.
	   # This can/should be a fork() or a new thread,
	   # but for simplicity...
	   my $client = new Net::SMTP::Server::Client($conn) ||
	       croak("Unable to handle client connection: $!
");

	   # Process the client.  This command will block until
	   # the connecting client completes the SMTP transaction.
	   $client->process || next;

	   # In this simple server, we're just relaying everything
	   # to a server.  If a real server were implemented, you
	   # could save email to a file, or perform various other
	   # actions on it here.
	   my $relay = new Net::SMTP::Server::Relay($client->{FROM},
						    $client->{TO},
						    $client->{MSG});
	 }

DESCRIPTION

       The Net::SMTP::Server::Relay module implements simple SMTP relaying for use with the Net::SMTP::Server module.  All this module does is to
       take a given message and iterate through the list of recipients, doing DNS lookups for the associated MX record and delivering the
       messages.  This module makes extensive use of the plethora of other modules already implemented for Perl (specifically the DNS and
       Net::SMTP modules in this case), and should give but a glimpse of the potential for extending the Net::SMTP::Server's functionality to
       provide a full-featured SMTP server, native to Perl.

       The above example illustrates the use of the Net::SMTP::Server::Relay modules -- you simply have to instantiate the module, passing along
       the sender, recipients, and message.  More formally:

	 $relay = new Net::SMTP::Server::Relay($from, @to, $msg);

       Where $from is the sender, @to is an array containing the list of recipients, and $msg is the message to relay.

AUTHOR AND COPYRIGHT Net::SMTP::Server / SMTP::Server is Copyright(C) 1999, MacGyver (aka Habeeb J. Dihu) <macgyver@tos.net>.  ALL RIGHTS
       RESERVED.
       You may distribute this package under the terms of either the GNU General Public License or the Artistic License, as specified in the Perl
       README file.

SEE ALSO

       Net::SMTP::Server::Server, Net::SMTP::Server::Client

perl v5.10.1							    1999-12-28							Server::Relay(3pm)