Help! Script to Scan Remote IP UDP....

[Guest ryen]

Hello, Is it possible for a php script to check a remote IPS UDP port and report back if theirs activity? For example if there is activity have it return "Server is UP" and if no activity "Server is Down" Im trying to see if my game server is running and its the only program to use a certain udp port.

READ My reply for more info (2 down).

Thanks

[redarrow]

[code]
<?php

$game_sever_ip="xxxxxxxxxx";

if($game_sever){

echo " GAME SERVER UP";

}else{

echo "GAME SERVER DOWN":

?>
[/code]

[Guest ryen]

Hey, That will tell if the Server machine isdown but what if the game server exe  program crashes? It wont tell me that. I had this script :

<?PHP 
function serverstatus($host, $port) { 
  $sock = @fsockopen($host, $port, &$num, &$error, 2); 
  if ($sock) { 
      if (getservbyport($port,"udp")!=null) { 
          $serv = getservbyport($port,"udp"); 
      } else { 
          $serv = "Unknown"; 
      } 
      echo "<center>Server : <span style='color:green'>Online</span></center>"; 
      fclose($sock); 
      unset($sock); 
  }else{ 
      echo "<center>Server : <span style='color:red'>Offline</span></center>"; 
      unset($sock); 
  } 
} 

//Ports To Scan , insert your info here!
serverstatus("udp//127.0.0.1", 44453); 

//
?>

But UDP wont report OFFLINE. I read that Unlike TCP, UDP is a connectionless protocol.

Due to the nature of UDP, if you send a packet and don't get a response it automatically assumes the port is open. That's why you always get the online status.


Anyway around that?

[Guest ryen]

anyone?

[dagnasty]

http://us3.php.net/function.fsockopen not sure if the answer is here, but do a search for udp in that page and you might find your answer. Tired as hell wish I could offer more help

[Guest ryen]

dident see anything :(

[redarrow]

this is what you need tell me cheers

http://www.sitepoint.com/article/udp-portscanning-php

[Guest ryen]

How do i apply what they say to the above script?

[Guest ryen]

I guess im still a php noob, im not sure how to make the above article apply.

:'(