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ziggomorphic hat geschrieben:This is the PHP code used by the active server list to contact potential running AFD servers:

Code: Alles auswählen

$sock = fsockopen('udp://'.$serverIP,19400,$errno,$errstr,2)
socket_set_timeout($sock,2);
fwrite($sock,sprintf("%c%c%c%c%c%c%c%c%c",0x02,0,0,0x20,0,0,0,0,0));
$resp = fread($sock,200);
fclose($sock);

This simply sends one UDP packet containing 9 characters (all 0 except no.1=0x02 and no.4=0x20) to the server's IP address and wait for up to 200 characters in response.

The response (if any) can be read as follows to get information on the running game:

start position (starting from 0) | max. length | information

61 | 32 | name of the server
93 | 32 | game mode(different depending on language version)
125 | 32 | level name
157 | 1 | number of currently connected players
161 | 1 | maximum number of players