@jsprismarine/prismarine/dist/network/packet/BatchPacket.cjs.cjs

Dedicated Minecraft Bedrock Edition server written in TypeScript

'use strict';

Object.defineProperties(exports, { __esModule: { value: true }, [Symbol.toStringTag]: { value: 'Module' } });

const BinaryStream = require('@jsprismarine/jsbinaryutils');
const Zlib = require('zlib');
const network_CompressionProvider = require('../CompressionProvider.cjs.cjs');
const network_packet_DataPacket = require('./DataPacket.cjs.cjs');
const network_packet_NetworkSettingsPacket = require('./NetworkSettingsPacket.cjs.cjs');

const _interopDefault = e => e && e.__esModule ? e : { default: e };

const BinaryStream__default = /*#__PURE__*/_interopDefault(BinaryStream);
const Zlib__default = /*#__PURE__*/_interopDefault(Zlib);

class BatchPacket extends network_packet_DataPacket.default {
  static NetID = 254;
  compressed = true;
  //  TODO: better solution
  payload = new BinaryStream__default.default();
  // Bigger compression level leads to more CPU usage and less network, and vice versa
  // TODO: batch.setCompressionLevel(), it should be dependent from Server instance
  // private readonly compressionLevel: number = Server?.instance?.getConfig().getPacketCompressionLevel() ?? 7;
  decodeHeader() {
    const pid = this.readByte();
    if (pid !== this.getId()) {
      throw new Error(`Batch ID mismatch: is ${this.getId()}, got ${pid}`);
    }
  }
  decodePayload() {
    this.payload.write(
      this.compressed ? network_CompressionProvider.CompressionProvider.fromAlgorithmSync(this.readByte())(this.readRemaining()) : this.readRemaining()
    );
  }
  async asyncDecode() {
    this.decodeHeader();
    try {
      this.payload.write(
        this.compressed ? await network_CompressionProvider.CompressionProvider.fromAlgorithm(this.readByte())(this.readRemaining()) : this.readRemaining()
      );
    } catch (error) {
      throw new Error(`Failed to inflate batched content`, { cause: error });
    }
    return this.getPackets();
  }
  encodeHeader() {
    this.writeByte(this.getId());
  }
  encodePayload() {
    if (this.compressed) {
      this.writeByte(network_packet_NetworkSettingsPacket.PacketCompressionAlgorithm.ZLIB);
    }
    this.write(
      this.compressed ? Zlib__default.default.deflateRawSync(this.payload.getBuffer(), { level: 7 }) : this.payload.getBuffer()
    );
  }
  addPacket(packet) {
    if (!packet.getEncoded()) {
      packet.encode();
    }
    this.payload.writeUnsignedVarInt(packet.getBuffer().byteLength);
    this.payload.write(packet.getBuffer());
  }
  getPackets() {
    const stream = new BinaryStream__default.default(this.payload.getBuffer());
    const packets = [];
    do {
      packets.push(stream.read(stream.readUnsignedVarInt()));
    } while (!stream.feof());
    return packets;
  }
}

exports.default = BatchPacket;
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