[skunk-m]

hello,

i've downloaded a script for sending a magic packet to wake up my home pc.
but you need to be root to write to the socket.

so i get this:
Warning: socket_sendto() [function.socket-sendto]: unable to write to socket [1]: Operation not permitted in /home/a4652243/public_html/henks.php on line 46

here is the script:

PHP Code:

      <?
      flush();

      function WakeOnLan($addr, $mac, $socket_number) {

        $addr_byte = explode(':', $mac);

        $hw_addr = '';

        for ($a=0; $a <6; $a++) $hw_addr .= chr(hexdec($addr_byte[$a]));

        $msg = chr(255).chr(255).chr(255).chr(255).chr(255).chr(255);

        for ($a = 1; $a <= 16; $a++) $msg .= $hw_addr;

        // send it to the broadcast address using UDP

        // SQL_BROADCAST option isn't help!!

        $s = socket_create(AF_INET, SOCK_DGRAM, SOL_UDP);

        if ($s == false) {

          echo "Error creating socket!\n";

          echo "Error code is '".socket_last_error($s)."' - " . socket_strerror(socket_last_error($s));

          return FALSE;

          }

        else {

          // setting a broadcast option to socket:

          $opt_ret = socket_set_option($s, 1, 6, TRUE);

          if($opt_ret <0) {

            echo "setsockopt() failed, error: " . strerror($opt_ret) . "\n";

            return FALSE;

            }

          if(socket_sendto($s, $msg, strlen($msg), 0, $addr, $socket_number)) {

            echo "Magic Packet sent successfully!";

            socket_close($s);

            return TRUE;

            }

          else {

            echo "Magic packet failed!";

            return FALSE;

            }

          }

        }

      $socket_number = "7777";

      // MAC Address of the listening computer's network device

      $mac_addy = "my mac";

      // IP address of the listening computer. Input the domain name if you are using a hostname (like when under Dynamic DNS/IP)

      $ip_addy = gethostbyname("my ip");

      WakeOnLan($ip_addy, $mac_addy, $socket_number);
?>

is it possible to make this work?

skunk-m

[Bad Karma[CORE]]

due to serverside restrictions and disabled functions -> no

[Vazzer]

What exactly does this script do? Turns your computer on?

[Bad Karma[CORE]]

either turn it on or bring it out of stand by

[leegao]

Out of curiosity, why are you using a push technique when yuo're better suited with a polling technique. Have your home PC poll a website every x seconds and then use the webserver as the response, not the other way around.

[skunk-m]

Originally Posted by leegao

Out of curiosity, why are you using a push technique when yuo're better suited with a polling technique. Have your home PC poll a website every x seconds and then use the webserver as the response, not the other way around.

:S
my home pc is powered off.. with the script i sent te magic packet to my external ip on a specific port which i have forwarded to my broadcast adres and then the computer boots.

[leegao]

so then I'm even more baffled. Turning on sockets wouldn't actually do anything for you. The nature of a broadcast server is that it needs to either have a indefinite executiontime (which apache does not support) or that it needs to be forked or daemonized from the apache thread so it can consume as much resource as it need for as long as it needs to.

[skunk-m]

Originally Posted by leegao

so then I'm even more baffled. Turning on sockets wouldn't actually do anything for you. The nature of a broadcast server is that it needs to either have a indefinite executiontime (which apache does not support) or that it needs to be forked or daemonized from the apache thread so it can consume as much resource as it need for as long as it needs to.

the script just creates a magic packet with the pc's mac adress and sents that to my external ip on a specific port my router forwards that port to my broadcast adress

[leegao]

let me rephrase what I've just said. Apache's php-handler in most webhosts has the keep-alive settings off. This is why there's no plausible way of writing a comet (push) server on a free hosting since the only option would be to use longpoll. Since the client in your case makes absolutely no requests and expects it to be on the receiving end of the connection node, longpoll can not work, there's no way to create a script in php designed for a shared-configured apache server to broadcast scheduled network packets.