1 | import { common, createSerializeWire, crypto, InvalidFormatError, IOHelper, } from '@neo-one/client-common-esnext-esm';
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2 | import { BinaryReader, Block, ConsensusPayload, deserializeTransactionWire, } from '@neo-one/node-core-esnext-esm';
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3 | import { makeErrorWithCode, utils } from '@neo-one/utils-esnext-esm';
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4 | import { Transform } from 'stream';
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5 | import { assertCommand, Command } from './Command';
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6 | import { AddrPayload, FilterAddPayload, FilterLoadPayload, GetBlocksPayload, HeadersPayload, InvPayload, MerkleBlockPayload, VersionPayload, } from './payload';
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7 | export const COMMAND_LENGTH = 12;
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8 | export const PAYLOAD_MAX_SIZE = 0x02000000;
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9 | const calculateChecksum = (buffer) => common.toUInt32LE(crypto.hash256(buffer));
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10 | const deserializeMessageHeader = ({ context, reader, }) => {
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11 | if (reader.readUInt32LE() !== context.messageMagic) {
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12 | throw new InvalidFormatError();
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13 | }
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14 | const command = assertCommand(reader.readFixedString(COMMAND_LENGTH));
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15 | const length = reader.readUInt32LE();
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16 | if (length > PAYLOAD_MAX_SIZE) {
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17 | throw new InvalidFormatError();
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18 | }
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19 | const checksum = reader.readUInt32LE();
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20 | return { command, length, checksum };
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21 | };
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22 | export class Message {
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23 | constructor({ magic, value }) {
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24 | this.serializeWire = createSerializeWire(this.serializeWireBase.bind(this));
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25 | this.magic = magic;
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26 | this.value = value;
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27 | }
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28 | static deserializeWireBase(options) {
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29 | const { reader, context } = options;
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30 | const { command, length, checksum } = deserializeMessageHeader(options);
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31 | const payloadBuffer = reader.readBytes(length);
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32 | if (calculateChecksum(payloadBuffer) !== checksum) {
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33 | throw new InvalidFormatError();
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34 | }
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35 | const payloadOptions = {
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36 | context: options.context,
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37 | buffer: payloadBuffer,
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38 | };
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39 | let value;
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40 | switch (command) {
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41 | case Command.addr:
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42 | value = {
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43 | command: Command.addr,
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44 | payload: AddrPayload.deserializeWire(payloadOptions),
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45 | };
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46 | break;
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47 | case Command.block:
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48 | value = {
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49 | command: Command.block,
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50 | payload: Block.deserializeWire(payloadOptions),
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51 | };
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52 | break;
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53 | case Command.consensus:
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54 | value = {
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55 | command: Command.consensus,
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56 | payload: ConsensusPayload.deserializeWire(payloadOptions),
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57 | };
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58 | break;
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59 | case Command.filteradd:
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60 | value = {
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61 | command: Command.filteradd,
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62 | payload: FilterAddPayload.deserializeWire(payloadOptions),
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63 | };
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64 | break;
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65 | case Command.filterclear:
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66 | value = { command: Command.filterclear };
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67 | break;
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68 | case Command.filterload:
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69 | value = {
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70 | command: Command.filterload,
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71 | payload: FilterLoadPayload.deserializeWire(payloadOptions),
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72 | };
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73 | break;
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74 | case Command.getaddr:
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75 | value = { command: Command.getaddr };
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76 | break;
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77 | case Command.getblocks:
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78 | value = {
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79 | command: Command.getblocks,
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80 | payload: GetBlocksPayload.deserializeWire(payloadOptions),
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81 | };
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82 | break;
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83 | case Command.getdata:
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84 | value = {
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85 | command: Command.getdata,
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86 | payload: InvPayload.deserializeWire(payloadOptions),
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87 | };
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88 | break;
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89 | case Command.getheaders:
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90 | value = {
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91 | command: Command.getheaders,
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92 | payload: GetBlocksPayload.deserializeWire(payloadOptions),
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93 | };
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94 | break;
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95 | case Command.headers:
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96 | value = {
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97 | command: Command.headers,
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98 | payload: HeadersPayload.deserializeWire(payloadOptions),
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99 | };
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100 | break;
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101 | case Command.inv:
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102 | value = {
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103 | command: Command.inv,
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104 | payload: InvPayload.deserializeWire(payloadOptions),
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105 | };
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106 | break;
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107 | case Command.mempool:
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108 | value = { command: Command.mempool };
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109 | break;
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110 | case Command.tx:
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111 | value = {
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112 | command: Command.tx,
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113 | payload: deserializeTransactionWire(payloadOptions),
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114 | };
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115 | break;
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116 | case Command.verack:
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117 | value = { command: Command.verack };
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118 | break;
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119 | case Command.version:
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120 | value = {
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121 | command: Command.version,
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122 | payload: VersionPayload.deserializeWire(payloadOptions),
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123 | };
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124 | break;
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125 | case Command.alert:
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126 | value = { command: Command.alert };
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127 | break;
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128 | case Command.merkleblock:
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129 | value = {
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130 | command: Command.merkleblock,
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131 | payload: MerkleBlockPayload.deserializeWire(payloadOptions),
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132 | };
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133 | break;
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134 | case Command.notfound:
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135 | value = { command: Command.notfound };
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136 | break;
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137 | case Command.ping:
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138 | value = { command: Command.ping };
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139 | break;
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140 | case Command.pong:
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141 | value = { command: Command.pong };
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142 | break;
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143 | case Command.reject:
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144 | value = { command: Command.reject };
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145 | break;
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146 | default:
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147 | utils.assertNever(command);
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148 | throw new InvalidFormatError();
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149 | }
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150 | return new this({ magic: context.messageMagic, value });
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151 | }
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152 | static deserializeWire(options) {
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153 | return this.deserializeWireBase({
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154 | context: options.context,
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155 | reader: new BinaryReader(options.buffer),
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156 | });
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157 | }
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158 | serializeWireBase(writer) {
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159 | const { value } = this;
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160 | writer.writeUInt32LE(this.magic);
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161 | writer.writeFixedString(value.command, COMMAND_LENGTH);
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162 | let payload = Buffer.alloc(0);
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163 | switch (value.command) {
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164 | case Command.addr:
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165 | payload = value.payload.serializeWire();
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166 | break;
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167 | case Command.block:
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168 | payload = value.payload.serializeWire();
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169 | break;
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170 | case Command.consensus:
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171 | payload = value.payload.serializeWire();
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172 | break;
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173 | case Command.filteradd:
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174 | payload = value.payload.serializeWire();
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175 | break;
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176 | case Command.filterclear:
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177 | break;
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178 | case Command.filterload:
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179 | payload = value.payload.serializeWire();
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180 | break;
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181 | case Command.getaddr:
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182 | break;
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183 | case Command.getblocks:
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184 | payload = value.payload.serializeWire();
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185 | break;
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186 | case Command.getdata:
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187 | payload = value.payload.serializeWire();
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188 | break;
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189 | case Command.getheaders:
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190 | payload = value.payload.serializeWire();
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191 | break;
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192 | case Command.headers:
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193 | payload = value.payload.serializeWire();
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194 | break;
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195 | case Command.inv:
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196 | payload = value.payload.serializeWire();
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197 | break;
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198 | case Command.mempool:
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199 | break;
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200 | case Command.tx:
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201 | payload = value.payload.serializeWire();
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202 | break;
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203 | case Command.verack:
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204 | break;
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205 | case Command.version:
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206 | payload = value.payload.serializeWire();
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207 | break;
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208 | case Command.alert:
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209 | break;
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210 | case Command.merkleblock:
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211 | payload = value.payload.serializeWire();
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212 | break;
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213 | case Command.notfound:
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214 | break;
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215 | case Command.ping:
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216 | break;
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217 | case Command.pong:
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218 | break;
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219 | case Command.reject:
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220 | break;
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221 | default:
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222 | utils.assertNever(value);
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223 | throw new InvalidFormatError();
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224 | }
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225 | writer.writeUInt32LE(payload.length);
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226 | writer.writeUInt32LE(calculateChecksum(payload));
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227 | writer.writeBytes(payload);
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228 | }
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229 | }
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230 | export const InvalidMessageTransformEncodingError = makeErrorWithCode('INVALID_MESSAGE_TRANSFORM_ENCODING', (message) => message);
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231 | const SIZE_OF_MESSAGE_HEADER = IOHelper.sizeOfUInt32LE +
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232 | IOHelper.sizeOfFixedString(COMMAND_LENGTH) +
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233 | IOHelper.sizeOfUInt32LE +
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234 | IOHelper.sizeOfUInt32LE;
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235 | export class MessageTransform extends Transform {
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236 | constructor(context) {
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237 | super({ readableObjectMode: true });
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238 | this.context = context;
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239 | this.mutableBuffer = Buffer.from([]);
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240 | }
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241 | _transform(chunk, encoding, callback) {
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242 | if (typeof chunk === 'string') {
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243 | throw new InvalidMessageTransformEncodingError(`Invalid Message Transform Chunk Type. Expected chunk type to be 'string', found: ${typeof chunk}`);
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244 | }
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245 | if (encoding !== 'buffer') {
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246 | throw new InvalidMessageTransformEncodingError(`Invalid Message Transform Encoding. Expected: 'buffer', found: ${encoding}`);
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247 | }
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248 | this.mutableBuffer = Buffer.concat([this.mutableBuffer, chunk]);
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249 | try {
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250 | const { remainingBuffer, mutableMessages } = this.processBuffer(new BinaryReader(this.mutableBuffer));
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251 | this.mutableBuffer = remainingBuffer;
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252 | mutableMessages.forEach((message) => this.push(message));
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253 | callback(undefined);
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254 | }
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255 | catch (error) {
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256 | callback(error);
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257 | }
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258 | }
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259 | processBuffer(reader) {
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260 | if (reader.remaining < SIZE_OF_MESSAGE_HEADER) {
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261 | return { remainingBuffer: reader.remainingBuffer, mutableMessages: [] };
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262 | }
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263 | const { length } = deserializeMessageHeader({
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264 | context: this.context,
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265 | reader: reader.clone(),
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266 | });
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267 | if (reader.remaining < SIZE_OF_MESSAGE_HEADER + length) {
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268 | return { remainingBuffer: reader.remainingBuffer, mutableMessages: [] };
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269 | }
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270 | const message = Message.deserializeWireBase({
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271 | context: this.context,
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272 | reader,
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273 | });
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274 | const { remainingBuffer, mutableMessages } = this.processBuffer(reader);
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275 | mutableMessages.push(message);
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276 | return { remainingBuffer, mutableMessages };
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277 | }
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278 | }
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279 |
|
280 | //# 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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"]}
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