SessionStartPacketHandler.php

<?php
 
/*
 *
 *  ____            _        _   __  __ _                  __  __ ____
 * |  _ \ ___   ___| | _____| |_|  \/  (_)_ __   ___      |  \/  |  _ \
 * | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
 * |  __/ (_) | (__|   <  __/ |_| |  | | | | | |  __/_____| |  | |  __/
 * |_|   \___/ \___|_|\_\___|\__|_|  |_|_|_| |_|\___|     |_|  |_|_|
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * @author PocketMine Team
 * @link http://www.pocketmine.net/
 *
 *
 */
 
declare(strict_types=1);
 
namespace pocketmine\network\mcpe\handler;
 
use pocketmine\network\mcpe\NetworkSession;
use pocketmine\network\mcpe\protocol\NetworkSettingsPacket;
use pocketmine\network\mcpe\protocol\ProtocolInfo;
use pocketmine\network\mcpe\protocol\RequestNetworkSettingsPacket;
 
final class SessionStartPacketHandler extends PacketHandler{
 
    public function __construct(
        private NetworkSession $session,
        private \Closure $onSuccess
    ){}
 
    public function handleRequestNetworkSettings(RequestNetworkSettingsPacket $packet) : bool{
        $protocolVersion = $packet->getProtocolVersion();
        if(!$this->isCompatibleProtocol($protocolVersion)){
            $this->session->disconnectIncompatibleProtocol($protocolVersion);
 
            return true;
        }
 
        //TODO: we're filling in the defaults to get pre-1.19.30 behaviour back for now, but we should explore the new options in the future
        $this->session->sendDataPacket(NetworkSettingsPacket::create(
            NetworkSettingsPacket::COMPRESS_EVERYTHING,
            $this->session->getCompressor()->getNetworkId(),
            false,
            0,
            0
        ));
        ($this->onSuccess)();
 
        return true;
    }
 
    protected function isCompatibleProtocol(int $protocolVersion) : bool{
        return $protocolVersion === ProtocolInfo::CURRENT_PROTOCOL;
    }
}