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1import { common, createSerializeWire, crypto, InvalidFormatError, IOHelper, } from '@neo-one/client-common-esnext-esm';
2import { BinaryReader, Block, ConsensusPayload, deserializeTransactionWire, } from '@neo-one/node-core-esnext-esm';
3import { makeErrorWithCode, utils } from '@neo-one/utils-esnext-esm';
4import { Transform } from 'stream';
5import { assertCommand, Command } from './Command';
6import { AddrPayload, FilterAddPayload, FilterLoadPayload, GetBlocksPayload, HeadersPayload, InvPayload, MerkleBlockPayload, VersionPayload, } from './payload';
7export const COMMAND_LENGTH = 12;
8export const PAYLOAD_MAX_SIZE = 0x02000000;
9const calculateChecksum = (buffer) => common.toUInt32LE(crypto.hash256(buffer));
10const deserializeMessageHeader = ({ context, reader, }) => {
11 if (reader.readUInt32LE() !== context.messageMagic) {
12 throw new InvalidFormatError();
13 }
14 const command = assertCommand(reader.readFixedString(COMMAND_LENGTH));
15 const length = reader.readUInt32LE();
16 if (length > PAYLOAD_MAX_SIZE) {
17 throw new InvalidFormatError();
18 }
19 const checksum = reader.readUInt32LE();
20 return { command, length, checksum };
21};
22export class Message {
23 constructor({ magic, value }) {
24 this.serializeWire = createSerializeWire(this.serializeWireBase.bind(this));
25 this.magic = magic;
26 this.value = value;
27 }
28 static deserializeWireBase(options) {
29 const { reader, context } = options;
30 const { command, length, checksum } = deserializeMessageHeader(options);
31 const payloadBuffer = reader.readBytes(length);
32 if (calculateChecksum(payloadBuffer) !== checksum) {
33 throw new InvalidFormatError();
34 }
35 const payloadOptions = {
36 context: options.context,
37 buffer: payloadBuffer,
38 };
39 let value;
40 switch (command) {
41 case Command.addr:
42 value = {
43 command: Command.addr,
44 payload: AddrPayload.deserializeWire(payloadOptions),
45 };
46 break;
47 case Command.block:
48 value = {
49 command: Command.block,
50 payload: Block.deserializeWire(payloadOptions),
51 };
52 break;
53 case Command.consensus:
54 value = {
55 command: Command.consensus,
56 payload: ConsensusPayload.deserializeWire(payloadOptions),
57 };
58 break;
59 case Command.filteradd:
60 value = {
61 command: Command.filteradd,
62 payload: FilterAddPayload.deserializeWire(payloadOptions),
63 };
64 break;
65 case Command.filterclear:
66 value = { command: Command.filterclear };
67 break;
68 case Command.filterload:
69 value = {
70 command: Command.filterload,
71 payload: FilterLoadPayload.deserializeWire(payloadOptions),
72 };
73 break;
74 case Command.getaddr:
75 value = { command: Command.getaddr };
76 break;
77 case Command.getblocks:
78 value = {
79 command: Command.getblocks,
80 payload: GetBlocksPayload.deserializeWire(payloadOptions),
81 };
82 break;
83 case Command.getdata:
84 value = {
85 command: Command.getdata,
86 payload: InvPayload.deserializeWire(payloadOptions),
87 };
88 break;
89 case Command.getheaders:
90 value = {
91 command: Command.getheaders,
92 payload: GetBlocksPayload.deserializeWire(payloadOptions),
93 };
94 break;
95 case Command.headers:
96 value = {
97 command: Command.headers,
98 payload: HeadersPayload.deserializeWire(payloadOptions),
99 };
100 break;
101 case Command.inv:
102 value = {
103 command: Command.inv,
104 payload: InvPayload.deserializeWire(payloadOptions),
105 };
106 break;
107 case Command.mempool:
108 value = { command: Command.mempool };
109 break;
110 case Command.tx:
111 value = {
112 command: Command.tx,
113 payload: deserializeTransactionWire(payloadOptions),
114 };
115 break;
116 case Command.verack:
117 value = { command: Command.verack };
118 break;
119 case Command.version:
120 value = {
121 command: Command.version,
122 payload: VersionPayload.deserializeWire(payloadOptions),
123 };
124 break;
125 case Command.alert:
126 value = { command: Command.alert };
127 break;
128 case Command.merkleblock:
129 value = {
130 command: Command.merkleblock,
131 payload: MerkleBlockPayload.deserializeWire(payloadOptions),
132 };
133 break;
134 case Command.notfound:
135 value = { command: Command.notfound };
136 break;
137 case Command.ping:
138 value = { command: Command.ping };
139 break;
140 case Command.pong:
141 value = { command: Command.pong };
142 break;
143 case Command.reject:
144 value = { command: Command.reject };
145 break;
146 default:
147 utils.assertNever(command);
148 throw new InvalidFormatError();
149 }
150 return new this({ magic: context.messageMagic, value });
151 }
152 static deserializeWire(options) {
153 return this.deserializeWireBase({
154 context: options.context,
155 reader: new BinaryReader(options.buffer),
156 });
157 }
158 serializeWireBase(writer) {
159 const { value } = this;
160 writer.writeUInt32LE(this.magic);
161 writer.writeFixedString(value.command, COMMAND_LENGTH);
162 let payload = Buffer.alloc(0);
163 switch (value.command) {
164 case Command.addr:
165 payload = value.payload.serializeWire();
166 break;
167 case Command.block:
168 payload = value.payload.serializeWire();
169 break;
170 case Command.consensus:
171 payload = value.payload.serializeWire();
172 break;
173 case Command.filteradd:
174 payload = value.payload.serializeWire();
175 break;
176 case Command.filterclear:
177 break;
178 case Command.filterload:
179 payload = value.payload.serializeWire();
180 break;
181 case Command.getaddr:
182 break;
183 case Command.getblocks:
184 payload = value.payload.serializeWire();
185 break;
186 case Command.getdata:
187 payload = value.payload.serializeWire();
188 break;
189 case Command.getheaders:
190 payload = value.payload.serializeWire();
191 break;
192 case Command.headers:
193 payload = value.payload.serializeWire();
194 break;
195 case Command.inv:
196 payload = value.payload.serializeWire();
197 break;
198 case Command.mempool:
199 break;
200 case Command.tx:
201 payload = value.payload.serializeWire();
202 break;
203 case Command.verack:
204 break;
205 case Command.version:
206 payload = value.payload.serializeWire();
207 break;
208 case Command.alert:
209 break;
210 case Command.merkleblock:
211 payload = value.payload.serializeWire();
212 break;
213 case Command.notfound:
214 break;
215 case Command.ping:
216 break;
217 case Command.pong:
218 break;
219 case Command.reject:
220 break;
221 default:
222 utils.assertNever(value);
223 throw new InvalidFormatError();
224 }
225 writer.writeUInt32LE(payload.length);
226 writer.writeUInt32LE(calculateChecksum(payload));
227 writer.writeBytes(payload);
228 }
229}
230export const InvalidMessageTransformEncodingError = makeErrorWithCode('INVALID_MESSAGE_TRANSFORM_ENCODING', (message) => message);
231const SIZE_OF_MESSAGE_HEADER = IOHelper.sizeOfUInt32LE +
232 IOHelper.sizeOfFixedString(COMMAND_LENGTH) +
233 IOHelper.sizeOfUInt32LE +
234 IOHelper.sizeOfUInt32LE;
235export class MessageTransform extends Transform {
236 constructor(context) {
237 super({ readableObjectMode: true });
238 this.context = context;
239 this.mutableBuffer = Buffer.from([]);
240 }
241 _transform(chunk, encoding, callback) {
242 if (typeof chunk === 'string') {
243 throw new InvalidMessageTransformEncodingError(`Invalid Message Transform Chunk Type. Expected chunk type to be 'string', found: ${typeof chunk}`);
244 }
245 if (encoding !== 'buffer') {
246 throw new InvalidMessageTransformEncodingError(`Invalid Message Transform Encoding. Expected: 'buffer', found: ${encoding}`);
247 }
248 this.mutableBuffer = Buffer.concat([this.mutableBuffer, chunk]);
249 try {
250 const { remainingBuffer, mutableMessages } = this.processBuffer(new BinaryReader(this.mutableBuffer));
251 this.mutableBuffer = remainingBuffer;
252 mutableMessages.forEach((message) => this.push(message));
253 callback(undefined);
254 }
255 catch (error) {
256 callback(error);
257 }
258 }
259 processBuffer(reader) {
260 if (reader.remaining < SIZE_OF_MESSAGE_HEADER) {
261 return { remainingBuffer: reader.remainingBuffer, mutableMessages: [] };
262 }
263 const { length } = deserializeMessageHeader({
264 context: this.context,
265 reader: reader.clone(),
266 });
267 if (reader.remaining < SIZE_OF_MESSAGE_HEADER + length) {
268 return { remainingBuffer: reader.remainingBuffer, mutableMessages: [] };
269 }
270 const message = Message.deserializeWireBase({
271 context: this.context,
272 reader,
273 });
274 const { remainingBuffer, mutableMessages } = this.processBuffer(reader);
275 mutableMessages.push(message);
276 return { remainingBuffer, mutableMessages };
277 }
278}
279
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{\n  BinaryWriter,\n  common,\n  createSerializeWire,\n  crypto,\n  InvalidFormatError,\n  IOHelper,\n  SerializableWire,\n  SerializeWire,\n} from '@neo-one/client-common-esnext-esm';\nimport {\n  BinaryReader,\n  Block,\n  ConsensusPayload,\n  deserializeTransactionWire,\n  DeserializeWireBaseOptions,\n  DeserializeWireContext,\n  DeserializeWireOptions,\n  Transaction,\n} from '@neo-one/node-core-esnext-esm';\nimport { makeErrorWithCode, utils } from '@neo-one/utils-esnext-esm';\nimport { Transform } from 'stream';\nimport { assertCommand, Command } from './Command';\nimport {\n  AddrPayload,\n  FilterAddPayload,\n  FilterLoadPayload,\n  GetBlocksPayload,\n  HeadersPayload,\n  InvPayload,\n  MerkleBlockPayload,\n  VersionPayload,\n} from './payload';\nexport type MessageValue =\n  | { readonly command: Command.addr; readonly payload: AddrPayload }\n  | { readonly command: Command.block; readonly payload: Block }\n  | { readonly command: Command.consensus; readonly payload: ConsensusPayload }\n  | { readonly command: Command.filteradd; readonly payload: FilterAddPayload }\n  | { readonly command: Command.filterclear }\n  | { readonly command: Command.filterload; readonly payload: FilterLoadPayload }\n  | { readonly command: Command.getaddr }\n  | { readonly command: Command.getblocks; readonly payload: GetBlocksPayload }\n  | { readonly command: Command.getdata; readonly payload: InvPayload }\n  | { readonly command: Command.getheaders; readonly payload: GetBlocksPayload }\n  | { readonly command: Command.headers; readonly payload: HeadersPayload }\n  | { readonly command: Command.inv; readonly payload: InvPayload }\n  | { readonly command: Command.mempool }\n  | { readonly command: Command.tx; readonly payload: Transaction }\n  | { readonly command: Command.verack }\n  | { readonly command: Command.version; readonly payload: VersionPayload }\n  | { readonly command: Command.alert }\n  | { readonly command: Command.merkleblock; readonly payload: MerkleBlockPayload }\n  | { readonly command: Command.notfound }\n  | { readonly command: Command.ping }\n  | { readonly command: Command.pong }\n  | { readonly command: Command.reject };\nexport interface MessageAdd {\n  readonly magic: number;\n  readonly value: MessageValue;\n}\n\nexport const COMMAND_LENGTH = 12;\nexport const PAYLOAD_MAX_SIZE = 0x02000000;\n\nconst calculateChecksum = (buffer: Buffer) => common.toUInt32LE(crypto.hash256(buffer));\n\nconst deserializeMessageHeader = ({\n  context,\n  reader,\n}: DeserializeWireBaseOptions): {\n  readonly command: Command;\n  readonly length: number;\n  readonly checksum: number;\n} => {\n  if (reader.readUInt32LE() !== context.messageMagic) {\n    throw new InvalidFormatError();\n  }\n  const command = assertCommand(reader.readFixedString(COMMAND_LENGTH));\n  const length = reader.readUInt32LE();\n  if (length > PAYLOAD_MAX_SIZE) {\n    throw new InvalidFormatError();\n  }\n  const checksum = reader.readUInt32LE();\n\n  return { command, length, checksum };\n};\n\nexport class Message implements SerializableWire<Message> {\n  public static deserializeWireBase(options: DeserializeWireBaseOptions): Message {\n    const { reader, context } = options;\n    const { command, length, checksum } = deserializeMessageHeader(options);\n    const payloadBuffer = reader.readBytes(length);\n    if (calculateChecksum(payloadBuffer) !== checksum) {\n      throw new InvalidFormatError();\n    }\n\n    const payloadOptions = {\n      context: options.context,\n      buffer: payloadBuffer,\n    };\n\n    let value: MessageValue;\n    switch (command) {\n      case Command.addr:\n        value = {\n          command: Command.addr,\n          payload: AddrPayload.deserializeWire(payloadOptions),\n        };\n\n        break;\n      case Command.block:\n        value = {\n          command: Command.block,\n          payload: Block.deserializeWire(payloadOptions),\n        };\n\n        break;\n      case Command.consensus:\n        value = {\n          command: Command.consensus,\n          payload: ConsensusPayload.deserializeWire(payloadOptions),\n        };\n\n        break;\n      case Command.filteradd:\n        value = {\n          command: Command.filteradd,\n          payload: FilterAddPayload.deserializeWire(payloadOptions),\n        };\n\n        break;\n      case Command.filterclear:\n        value = { command: Command.filterclear };\n        break;\n      case Command.filterload:\n        value = {\n          command: Command.filterload,\n          payload: FilterLoadPayload.deserializeWire(payloadOptions),\n        };\n\n        break;\n      case Command.getaddr:\n        value = { command: Command.getaddr };\n        break;\n      case Command.getblocks:\n        value = {\n          command: Command.getblocks,\n          payload: GetBlocksPayload.deserializeWire(payloadOptions),\n        };\n\n        break;\n      case Command.getdata:\n        value = {\n          command: Command.getdata,\n          payload: InvPayload.deserializeWire(payloadOptions),\n        };\n\n        break;\n      case Command.getheaders:\n        value = {\n          command: Command.getheaders,\n          payload: GetBlocksPayload.deserializeWire(payloadOptions),\n        };\n\n        break;\n      case Command.headers:\n        value = {\n          command: Command.headers,\n          payload: HeadersPayload.deserializeWire(payloadOptions),\n        };\n\n        break;\n      case Command.inv:\n        value = {\n          command: Command.inv,\n          payload: InvPayload.deserializeWire(payloadOptions),\n        };\n\n        break;\n      case Command.mempool:\n        value = { command: Command.mempool };\n        break;\n      case Command.tx:\n        value = {\n          command: Command.tx,\n          payload: deserializeTransactionWire(payloadOptions),\n        };\n\n        break;\n      case Command.verack:\n        value = { command: Command.verack };\n        break;\n      case Command.version:\n        value = {\n          command: Command.version,\n          payload: VersionPayload.deserializeWire(payloadOptions),\n        };\n\n        break;\n      case Command.alert:\n        value = { command: Command.alert };\n        break;\n      case Command.merkleblock:\n        value = {\n          command: Command.merkleblock,\n          payload: MerkleBlockPayload.deserializeWire(payloadOptions),\n        };\n\n        break;\n      case Command.notfound:\n        value = { command: Command.notfound };\n        break;\n      case Command.ping:\n        value = { command: Command.ping };\n        break;\n      case Command.pong:\n        value = { command: Command.pong };\n        break;\n      case Command.reject:\n        value = { command: Command.reject };\n        break;\n      default:\n        utils.assertNever(command);\n        throw new InvalidFormatError();\n    }\n\n    return new this({ magic: context.messageMagic, value });\n  }\n\n  public static deserializeWire(options: DeserializeWireOptions): Message {\n    return this.deserializeWireBase({\n      context: options.context,\n      reader: new BinaryReader(options.buffer),\n    });\n  }\n\n  public readonly magic: number;\n  public readonly value: MessageValue;\n  public readonly serializeWire: SerializeWire = createSerializeWire(this.serializeWireBase.bind(this));\n\n  public constructor({ magic, value }: MessageAdd) {\n    this.magic = magic;\n    this.value = value;\n  }\n\n  public serializeWireBase(writer: BinaryWriter): void {\n    const { value } = this;\n\n    writer.writeUInt32LE(this.magic);\n    writer.writeFixedString(value.command, COMMAND_LENGTH);\n\n    let payload = Buffer.alloc(0);\n    switch (value.command) {\n      case Command.addr:\n        payload = value.payload.serializeWire();\n        break;\n      case Command.block:\n        payload = value.payload.serializeWire();\n        break;\n      case Command.consensus:\n        payload = value.payload.serializeWire();\n        break;\n      case Command.filteradd:\n        payload = value.payload.serializeWire();\n        break;\n      case Command.filterclear:\n        break;\n      case Command.filterload:\n        payload = value.payload.serializeWire();\n        break;\n      case Command.getaddr:\n        break;\n      case Command.getblocks:\n        payload = value.payload.serializeWire();\n        break;\n      case Command.getdata:\n        payload = value.payload.serializeWire();\n        break;\n      case Command.getheaders:\n        payload = value.payload.serializeWire();\n        break;\n      case Command.headers:\n        payload = value.payload.serializeWire();\n        break;\n      case Command.inv:\n        payload = value.payload.serializeWire();\n        break;\n      case Command.mempool:\n        break;\n      case Command.tx:\n        payload = value.payload.serializeWire();\n        break;\n      case Command.verack:\n        break;\n      case Command.version:\n        payload = value.payload.serializeWire();\n        break;\n      case Command.alert:\n        break;\n      case Command.merkleblock:\n        payload = value.payload.serializeWire();\n        break;\n      case Command.notfound:\n        break;\n      case Command.ping:\n        break;\n      case Command.pong:\n        break;\n      case Command.reject:\n        break;\n      default:\n        utils.assertNever(value);\n        throw new InvalidFormatError();\n    }\n\n    writer.writeUInt32LE(payload.length);\n    writer.writeUInt32LE(calculateChecksum(payload));\n    writer.writeBytes(payload);\n  }\n}\n\nexport const InvalidMessageTransformEncodingError = makeErrorWithCode(\n  'INVALID_MESSAGE_TRANSFORM_ENCODING',\n  (message: string) => message,\n);\n\nconst SIZE_OF_MESSAGE_HEADER =\n  IOHelper.sizeOfUInt32LE +\n  IOHelper.sizeOfFixedString(COMMAND_LENGTH) +\n  IOHelper.sizeOfUInt32LE +\n  IOHelper.sizeOfUInt32LE;\n\nexport class MessageTransform extends Transform {\n  public readonly context: DeserializeWireContext;\n  public mutableBuffer: Buffer;\n\n  public constructor(context: DeserializeWireContext) {\n    super({ readableObjectMode: true });\n    this.context = context;\n    this.mutableBuffer = Buffer.from([]);\n  }\n\n  public _transform(\n    chunk: Buffer | string,\n    encoding: string,\n    callback: (error: Error | undefined, data?: Buffer | string) => void,\n  ): void {\n    if (typeof chunk === 'string') {\n      throw new InvalidMessageTransformEncodingError(\n        `Invalid Message Transform Chunk Type. Expected chunk type to be 'string', found: ${typeof chunk}`,\n      );\n    }\n    if (encoding !== 'buffer') {\n      throw new InvalidMessageTransformEncodingError(\n        `Invalid Message Transform Encoding. Expected: 'buffer', found: ${encoding}`,\n      );\n    }\n\n    this.mutableBuffer = Buffer.concat([this.mutableBuffer, chunk]);\n    try {\n      const { remainingBuffer, mutableMessages } = this.processBuffer(new BinaryReader(this.mutableBuffer));\n\n      this.mutableBuffer = remainingBuffer;\n      mutableMessages.forEach((message) => this.push(message));\n      callback(undefined);\n    } catch (error) {\n      callback(error);\n    }\n  }\n\n  private processBuffer(\n    reader: BinaryReader,\n  ): {\n    readonly remainingBuffer: Buffer;\n    readonly mutableMessages: Message[];\n  } {\n    if (reader.remaining < SIZE_OF_MESSAGE_HEADER) {\n      return { remainingBuffer: reader.remainingBuffer, mutableMessages: [] };\n    }\n\n    const { length } = deserializeMessageHeader({\n      context: this.context,\n      reader: reader.clone(),\n    });\n\n    if (reader.remaining < SIZE_OF_MESSAGE_HEADER + length) {\n      return { remainingBuffer: reader.remainingBuffer, mutableMessages: [] };\n    }\n\n    const message = Message.deserializeWireBase({\n      context: this.context,\n      reader,\n    });\n\n    const { remainingBuffer, mutableMessages } = this.processBuffer(reader);\n    mutableMessages.push(message);\n\n    return { remainingBuffer, mutableMessages };\n  }\n}\n"]}