This is the server code.

To run i use: perl server.pl 777

use strict;
use IO::Socket;

#tomar el puerto a controlar o por default 777
my $port = $ARGV[0] || 777;
#Variables para la configuracion del servidor remoto a quien pasarle
#los parametros del GPS
my $remotehost = $ARGV[1] || "localhost";
my $remotepag = $ARGV[2] || "/puntogps.php";
my $rcvdata;

#ignorar procesos hijos para evitar zombies
$SIG{CHLD} = 'IGNORE';

#crear el socket a escuchar
my $listen_socket = IO::Socket::INET->new(LocalPort => $port,
        LocalAddr => 'localhost',
        Listen => 1000,
        Proto => 'tcp',
        Reuse => 1);

#asegurarnos que estamos controlando el puerto
die "Cant't create a listening socket: $@" unless $listen_socket;

warn "Server ready. Waiting for connections ...", $port, "\n";

#esperar conexiones
while (my $connection = $listen_socket->accept){
    my $child;
    # crear el fork para salir
    die "Can't fork: $!" unless defined ($child = fork());

    #¡el hijo!
    if ($child == 0){
        #cerrar el puerto para escuchar el proceso hijo
        $listen_socket->close;

        #llamar a la funcion que hace el request al servicio web
        $rcvdata = <$connection>;
        callws($remotehost, $remotepag, $rcvdata);
        
        #si el hijo regresa salte
        exit 0;
    }
    #¡soy el padre!
    else{

        #¿quién se conectó?
        warn "Connecton received ... ",$connection->peerhost,"\n";
        
        #cerrar la conexión, ya fue mandada a un hijo
        $connection->close();

    }
#regresa a escuchar otras conexiones
}

sub callws{
    my $rh = shift;
    my $rp = shift;
    my $rd = shift;
    
    my $remote = IO::Socket::INET->new( Proto     => "tcp",
                                         PeerAddr  => $rh,
                                         PeerPort  => "http(80)"
                                        );
                                        
    unless ($remote) { die "cannot connect to http daemon on $rh" }
    $remote->autoflush(1);
    print $remote "GET $rp HTTP/1.0\n\n";
    while ( <$remote> ) { print }
    close $remote;
}
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