Hi Guys, I am trying to write a simple socket server which will accept multiple connections. I have this code code below which opens a socket and allows multiple connections. At the moment it only posts back to all the connected clients what someone has sent. But I am going to add switch statements here to perform various tasks depending on what the client sends. This all works great but the problem I have is creating some sort of a child process running on the side which is an infinite loop. The infinite loops role is to send out a keep alive signal on the socket to all the clients every X seconds. How do I do this? I am new to perl but I understand that I someone need to share $read_set to the child process? I tried IPC::Shareable but that failed so I am guessing I need to do something with pipe maybe? Can you please advice how I best accomplish this. Thanks! 
#!/usr/bin/perl -w
#
# Socket for communication
 
# Libraries
use IO::Socket;
use IO::Select;
use IO::Handle;
 
my @sockets;
my $s = new IO::Socket::INET (
                        LocalHost => '192.168.0.1',
                        LocalPort => '1234',
                        Proto => 'tcp',
                        Listen => 16,
                        Reuse => 1,
                        );
die "Could not create socket: $!\n" unless $s;
 
$read_set = new IO::Select(); # create handle set for reading
$read_set->add($s);           # add the main socket to the set
 
while (1) {
        my ($rh_set) = IO::Select->select($read_set, undef, undef, 0);
        foreach $rh (@$rh_set) {
                if ($rh == $s) {
                        # Client has connected
                        $ns = $rh->accept();
                        $read_set->add($ns);
                } else {
                        $buf = <$rh>;
                if($buf) {
                        # Client has sent something
                        $buf =~ s/\n|\r//g;
                        my @sockets = $read_set->can_write();
                        foreach my $sck(@sockets){print $sck "Hi every
+body, I just received the following for one of you: $buf\r\n";}
                }
                else {
                        # Client has disconnected
                        $read_set->remove($rh);
                        close($rh);
                        }
                }
        }
}

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In reply to Printing to all clients on a socket from a child process by Fredde87

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