CS2D 
Reading server response from RCon in PHP
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<?php
function ExecRCon($socket, string $rcon_pw, string $cmd): string
{
$strbuild = ["\x01\x00\xF2"];
$strbuild[] = chr(strlen($rcon_pw));
$strbuild[] = $rcon_pw;
$strbuild[] = pack('v', strlen($cmd));
$strbuild[] = $cmd;
$str = implode('', $strbuild);
$str_length = strlen($str);
socket_write($socket, $str);
if(strcmp(socket_read($socket, 3), "\x01\x00\xF0") == 0)
{
socket_read($socket, 2);
$command_result_length = unpack('v', socket_read($socket, 2))[1];
return socket_read($socket, $command_result_length);
}
else
throw new Exception('Failed to execute remote command');
}
I can send RCon command to the server (I can see Parse RCon ext. message), but reading the server message throws warning (and FALSE is returned in socket_read).
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PHP Warning: socket_read(): unable to read from socket [10040]: A message sent on a datagram socket was larger than the internal message buffer or some other network limit, or the buffer used to receive a datagram into was smaller than the datagram itself.
Attempt to read the socket again simply hangs it.
This is how I call it. I can see ERROR: Unknown command 'Mon' (Mon) in the server.
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<?php
require('rcon.php');
$sock = socket_create(AF_INET, SOCK_DGRAM, SOL_UDP);
socket_bind($sock, '0.0.0.0', 3662);
socket_connect($sock, '192.168.43.54', 25000);
echo ExecRCon($sock, 'Password', 'Mon');
Can someone help? I'm relatively new on this thing.