package Foo;
use base qw(Net::Server);

open(my $log, '>>', 'log.txt')
    || die "Couldn't open log.txt: $!";

Foo->run(port => 7777);

sub process_request {
  while (<STDIN>) {
    print "You said: $_";
    print $log "They said: $_";
  }
}
[download]

Thanks guys, I have the following and its working great:

 
#!/usr/bin/perl -w

my $socket;
my $port = 7777;
my $host;

use IO::Socket;
use Sys::Hostname;

$SIG{CHLD} = sub {wait ()};

$host = hostname();

# START LOOP HERE
my $main_sock = new IO::Socket::INET (LocalHost => $host,
                                   LocalPort => $port,
                                   Listen    => 5,
                                   Proto     => 'tcp',
                                   Reuse     => 1,
                                  );
if (!$main_sock)
    {
     die "Socket could not be created. Reason: $!\n";
}

my $buf;
my $new_sock;
my $pid;
while ($new_sock = $main_sock->accept()) {
    $pid = fork();
    if ($pid == 0) {
        # Child process
        while (defined ($buf = <$new_sock>))
        {
           # do something with $buf ....
          my @lines = split(/\|/,$buf);
        exit(0);   # Child process exits when it is done.
       }
    } # else 'tis the parent process, which goes back to accept()
}
close ($main_sock);
exit;

However how do i save the data recieved to a log file? say /usr/home/l
+og.txt
[download]

use warnings;
no warnings 'once'; # suppress warning re $client_address
use IO::Socket;

$server_port = '7777'; 

open ($rd, '>>', 'log.txt') or die "Couldn't open log.txt for appendin
+g: $!";

$server = IO::Socket::INET->new(
 LocalPort => $server_port,
 Type      => SOCK_STREAM,
 Listen    => 1 )
 or die "Couldn't be a tcp server on port $server_port : $@\n$!\n";

while(1) {
  print "Server waiting\n";
  ($client, $client_address) = $server->accept();
  $data_read = <$client>;
  print $rd $data_read;
  close($client);
}
[download]