Server Detector
From: Ron Hiler (rhiler_at_spam.be.gone.rjcyberware.com)
Date: 11/29/03
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Date: Sat, 29 Nov 2003 14:27:16 -0800
Hi guys,
I've written a small bit of PHP code who's purpose is to detect my game
server. If the game server is running, I want to display the Launcher and
Client population (two parts of the game program).
So here is what I wrote, minus the address and port :)
<?php
if(($sock = socket_create (AF_INET, SOCK_DGRAM, 0)) < 0)
{
echo "socket_create() failed: reason: " . socket_strerror($sock) . "<BR>";
}
else
{
$server='xxx.xxx.xxx.xxx';
$port=yyyy;
$send=sprintf('%c%c%c%c',24, 0, 0, 0);
$x=socket_sendto($sock,$send,strlen($send)-1,0,$server,$port);
$bar = array($sock);
$select_result = socket_select($bar, $b=null, $c=null, 3);
if ($select_result == true)
{
$y=socket_recvfrom($sock,&$recvbuf,1024,0,&$from,&$port);
$LauncherPopulation = sprintf('%d', $recvbuf[0]);
$ClientPopulation = sprintf('%d', $recvbuf[4]);
echo "<CENTER>The Sovereignty Server<BR>";
echo "is UP</CENTER><BR>";
?>
<CENTER><img src="GreenGem.png" border="0"></CENTER>
<?php
echo $recvbuf . $y . "<BR>";
echo "Launcher Population:" . $LauncherPopulation . "<BR>";
echo "Client Population:" . $ClientPopulation . "<BR><BR>";
}
else
{
echo "<CENTER>The Sovereignty Server<BR>";
echo "is DOWN</CENTER><BR>";
?>
<CENTER><img src="RedGem.png" border="0"></CENTER>
<?php
}
}
socket_close($sock);
?>
This works to some extent. If the server is not running, I get a timeout
after 3 seconds and the red gem graphic is shown. If it is running the
server responds and I get the green gem graphic. The server sends back two
integers for the population
The problem is the $LauncherPopulation and $ClientPopulation values. They
always come up 0 even when there are player in game. The result of the
socket_recvfrom call ($y) is 8, which is the proper size for two integers,
and I know for sure that the server is sending the correct values. But for
some reason, my buffer doesn't appear to be set with them.
What am I doing wrong?
Ron
-- Creation is an act of sheer will www.rjcyberware.com Home of "Manifest Destiny" and "Sovereignty"
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