/**
* Get challenge (used for players/rules packets)
*
* @param $Header
* @param $ExpectedResult
*
* @throws InvalidPacketException
*/
private function GetChallenge($Header, $ExpectedResult)
{
if ($this->Challenge) {
return;
}
if ($this->UseOldGetChallengeMethod) {
$Header = self::A2S_SERVERQUERY_GETCHALLENGE;
}
$this->Socket->Write($Header, 0xffffffff);
$Buffer = $this->Socket->Read();
$Type = $Buffer->GetByte();
switch ($Type) {
case self::S2A_CHALLENGE:
$this->Challenge = $Buffer->Get(4);
return;
case $ExpectedResult:
// Goldsource (HLTV)
return;
case 0:
throw new InvalidPacketException('GetChallenge: Failed to get challenge.');
default:
throw new InvalidPacketException('GetChallenge: Packet header mismatch. (0x' . DecHex($Type) . ')', InvalidPacketException::PACKET_HEADER_MISMATCH);
}
}
