User:Pizzahut/msqp.php: Difference between revisions

From Valve Developer Community
Jump to navigation Jump to search
(Added seeding for long server lists (more than 231 servers).)
(Getting an error when changing the source code, so I put the update on PasteBin.)
Tag: Replaced
 
(29 intermediate revisions by the same user not shown)
Line 1: Line 1:
This is a code example for querying a Half-Life master server using the PHP language.
This is a code example for querying a Half-Life master server using the PHP language.<br>
<pre>
See also [[User:Pizzahut/test.php]] - a test script in PHP to check which master servers respond.
<?php


/*
* https://pastebin.com/D2mjg9Nb
 
Version history
 
1    Initial release.
2    Added option to retry same server if timeout occurs.
2.1  Added more master servers.
2.1.1 Fixed a bug, program didn't terminate if all master servers time out.
2.1.2 Removed a now redundant variable.
2.2  Seeding for long server lists.
 
*/
 
$master_servers = array("72.165.61.136", "68.142.72.250", "72.165.61.189",
"72.165.61.190", "69.28.151.162");
 
function query_timeout(&$socket, $seed)
{
  // region=world, filter: game=Half-Life
  if (!fwrite($socket, "1\xFF$seed\0\\gamedir\\valve\0"))
  {
      fclose($socket);
      exit("fwrite error\n");
  }
 
  $s = bin2hex(fread($socket, 6));
  $info = stream_get_meta_data($socket);
  if ($info['timed_out'])
  {
      echo "Master server \"$seed\" timed out.\n";
      fclose($socket);
  }
  else
  {
      if ($s !== "ffffffff660a")
      {
        fclose($socket);
        exit("Expected ff ff ff ff 66 0a (hex) but got $s.");
      }
  }
  return $info['timed_out'];
}
 
// Connect to master server, return timeout info.
// The socket is passed as reference and thus returned as well.
 
function master_server_timeout(&$socket, $ip)
{
  $port = 27010;
  $timeout = 1;
 
  echo "Connecting to master server \"$ip\".\n";
 
  $socket = fsockopen("udp://$ip", $port, $errno, $errstr, $timeout);
  if (!$socket)
      exit("Error $errno : $errstr \n");
  stream_set_timeout($socket, $timeout);
 
  return query_timeout($socket, "0.0.0.0:0");
}
 
// Try all master servers unless we find one that isn't timing out.
 
$abort = 1;
foreach ($master_servers as $ip)
{
  if (!master_server_timeout($socket, $ip))
  {
      $abort = 0;
      break;
  }
}
if ($abort == 1)
  exit("All master servers timed out, aborting.\n");
 
// Read list with server addresses (IP:port).
 
$count = 0;
do
{
  $new_a1 = ord(fread($socket,1));
  $info = stream_get_meta_data($socket);
  if ($info['timed_out'])
  {
      if (query_timeout($socket, "$a1.$a2.$a3.$a4:$a5"))
        break;
      $a1 = ord(fread($socket,1));
      $info = stream_get_meta_data($socket);
      if ($info['timed_out'])
      {
        echo "Timeout occured.\n";
        break;
      }
      echo "New seed, decreasing count.\n";
      $count--;
  }
  else
      $a1 = $new_a1;
 
  if ($a1 != 0)
  {
      $a2 = ord(fread($socket,1));
      $a3 = ord(fread($socket,1));
      $a4 = ord(fread($socket,1));
      $a5 = ord(fread($socket,1))*256 + ord(fread($socket,1));
      $count++;
      echo "$count $a1.$a2.$a3.$a4:$a5\n";
  }
} while ($a1 != 0);
fclose($socket);
echo "Retrieved $count server addresses.\n";
 
?>
</pre>

Latest revision as of 08:48, 16 October 2021

This is a code example for querying a Half-Life master server using the PHP language.
See also User:Pizzahut/test.php - a test script in PHP to check which master servers respond.

Retrieved from "https://developer.valvesoftware.com/w/index.php?title=User:Pizzahut/msqp.php&oldid=249880"