@colyseus/core/build/Protocol.cjs.map

Multiplayer Framework for Node.js.

{
  "version": 3,
  "sources": ["../src/Protocol.ts"],
  "sourcesContent": ["import { Packr } from '@colyseus/msgpackr';\nimport { encode, type Iterator } from '@colyseus/schema';\nimport { Protocol } from '@colyseus/shared-types';\n\n// Inter-process communication protocol\nexport const IpcProtocol = {\n  SUCCESS: 0,\n  ERROR: 1,\n  TIMEOUT: 2,\n} as const;\nexport type IpcProtocol = typeof IpcProtocol[keyof typeof IpcProtocol];\n\nconst packr = new Packr({\n  useRecords: false, // increased compatibility with decoders other than \"msgpackr\"\n});\n\n// msgpackr workaround: initialize buffer\npackr.encode(undefined);\n\nexport const getMessageBytes = {\n  [Protocol.JOIN_ROOM]: (reconnectionToken: string, serializerId: string, handshake?: Uint8Array) => {\n    const it: Iterator = { offset: 1 };\n    packr.buffer[0] = Protocol.JOIN_ROOM;\n\n    packr.buffer[it.offset++] = Buffer.byteLength(reconnectionToken, \"utf8\");\n    encode.utf8Write(packr.buffer, reconnectionToken, it);\n\n    packr.buffer[it.offset++] = Buffer.byteLength(serializerId, \"utf8\");\n    encode.utf8Write(packr.buffer, serializerId, it);\n\n    let handshakeLength = handshake?.byteLength || 0;\n\n    // check if buffer needs to be resized\n    if (handshakeLength > packr.buffer.byteLength - it.offset) {\n      packr.useBuffer(Buffer.alloc(it.offset + handshakeLength, packr.buffer));\n    }\n\n    if (handshakeLength > 0) {\n      packr.buffer.set(handshake, it.offset);\n    }\n\n    return Buffer.from(packr.buffer.subarray(0, it.offset + handshakeLength));\n  },\n\n  [Protocol.ERROR]: (code: number, message: string = '') => {\n    const it: Iterator = { offset: 1 };\n    packr.buffer[0] = Protocol.ERROR;\n\n    encode.number(packr.buffer, code, it);\n    encode.string(packr.buffer, message, it);\n\n    return Buffer.from(packr.buffer.subarray(0, it.offset));\n  },\n\n  [Protocol.ROOM_STATE]: (bytes: number[]) => {\n    return [Protocol.ROOM_STATE, ...bytes];\n  },\n\n  [Protocol.PING]: () => {\n    packr.buffer[0] = Protocol.PING;\n    return Buffer.from(packr.buffer.subarray(0, 1));\n  },\n\n  raw: (code: Protocol, type: string | number, message?: any, rawMessage?: Uint8Array | Buffer) => {\n    const it: Iterator = { offset: 1 };\n    packr.buffer[0] = code;\n\n    if (typeof (type) === 'string') {\n      encode.string(packr.buffer, type, it);\n\n    } else {\n      encode.number(packr.buffer, type, it);\n    }\n\n    if (message !== undefined) {\n      // force to encode from offset\n      packr.position = 0;\n\n      //\n      // TODO: remove this after issue is fixed https://github.com/kriszyp/msgpackr/issues/139\n      //\n      // - This check is only required when running integration tests.\n      //   (colyseus.js' usage of msgpackr/buffer is conflicting)\n      //\n      if (process.env.NODE_ENV !== \"production\") {\n        packr.useBuffer(packr.buffer);\n      }\n\n      // pack message into the same packr.buffer\n      const endOfBufferOffset = packr.pack(message, 2048 + it.offset).byteLength;\n                                                 // 2048 = RESERVE_START_SPACE\n      return Buffer.from(packr.buffer.subarray(0, endOfBufferOffset));\n\n    } else if (rawMessage !== undefined) {\n\n      // check if buffer needs to be resized\n      // TODO: can we avoid this?\n      if (rawMessage.length + it.offset > packr.buffer.byteLength) {\n        packr.useBuffer(Buffer.alloc(it.offset + rawMessage.length, packr.buffer));\n      }\n\n      // copy raw message into packr.buffer\n      packr.buffer.set(rawMessage, it.offset);\n\n      return Buffer.from(packr.buffer.subarray(0, it.offset + rawMessage.byteLength));\n\n    } else {\n      return Buffer.from(packr.buffer.subarray(0, it.offset));\n    }\n  },\n\n};\n\n"],
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}