raklib\server\SessionManager::receivePacket PHP Method

    private function receivePacket()
    {
        $len = $this->socket->readPacket($buffer, $source, $port);
        if ($buffer !== null) {
            $this->receiveBytes += $len;
            if (isset($this->block[$source])) {
                return true;
            }
            if (isset($this->ipSec[$source])) {
                $this->ipSec[$source]++;
            } else {
                $this->ipSec[$source] = 1;
            }
            if ($len > 0) {
                $pid = ord($buffer[0]);
                if ($pid === UNCONNECTED_PING::$ID) {
                    //No need to create a session for just pings
                    $packet = new UNCONNECTED_PING();
                    $packet->buffer = $buffer;
                    $packet->decode();
                    $pk = new UNCONNECTED_PONG();
                    $pk->serverID = $this->getID();
                    $pk->pingID = $packet->pingID;
                    $pk->serverName = $this->getName();
                    $this->sendPacket($pk, $source, $port);
                } elseif ($pid === UNCONNECTED_PONG::$ID) {
                    //ignored
                } elseif (($packet = $this->getPacketFromPool($pid)) !== null) {
                    $packet->buffer = $buffer;
                    $this->getSession($source, $port)->handlePacket($packet);
                } else {
                    $this->streamRaw($source, $port, $buffer);
                }
            }
            return true;
        }
        return false;
    }