1 | ;
|
2 | Object.defineProperty(exports, "__esModule", { value: true });
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3 | const client_common_1 = require("@neo-one/client-common");
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4 | const node_core_1 = require("@neo-one/node-core");
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5 | const utils_1 = require("@neo-one/utils");
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6 | const common_1 = require("./common");
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7 | const context_1 = require("./context");
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8 | const handleChangeView = ({ context: contextIn, node, payload, consensusContext, message, }) => {
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9 | let context = contextIn;
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10 | const viewNumber = message.newViewNumber;
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11 | if (viewNumber > context.expectedView[payload.validatorIndex]) {
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12 | const mutableExpectedView = [...context.expectedView];
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13 | mutableExpectedView[payload.validatorIndex] = viewNumber;
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14 | context = context.cloneExpectedView({ expectedView: mutableExpectedView });
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15 | if (common_1.checkExpectedView({ context, viewNumber })) {
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16 | return common_1.initializeConsensus({
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17 | node,
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18 | context,
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19 | viewNumber,
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20 | consensusContext,
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21 | });
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22 | }
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23 | }
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24 | return { context };
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25 | };
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26 | const TEN_MINUTES_IN_SECONDS = 10 * 60;
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27 | const handlePrepareRequest = async ({ context: contextIn, node, privateKey, payload, consensusContext, message, }) => {
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28 | let context = contextIn;
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29 | if (context.type !== 'backup' ||
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30 | context instanceof context_1.RequestReceivedContext ||
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31 | payload.validatorIndex !== context.primaryIndex ||
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32 | payload.timestamp > consensusContext.nowSeconds() + TEN_MINUTES_IN_SECONDS) {
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33 | return { context };
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34 | }
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35 | const header = await node.blockchain.header.get({
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36 | hashOrIndex: context.previousHash,
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37 | });
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38 | if (payload.timestamp <= header.timestamp) {
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39 | return { context };
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40 | }
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41 | const mutableSignatures = [];
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42 | mutableSignatures[payload.validatorIndex] = message.signature;
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43 | const newContext = new context_1.RequestReceivedContext({
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44 | viewNumber: context.viewNumber,
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45 | myIndex: context.myIndex,
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46 | primaryIndex: context.primaryIndex,
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47 | expectedView: context.expectedView,
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48 | validators: context.validators,
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49 | blockReceivedTimeSeconds: context.blockReceivedTimeSeconds,
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50 | transactions: {},
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51 | signatures: mutableSignatures,
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52 | header: {
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53 | type: 'new',
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54 | previousHash: context.previousHash,
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55 | transactionHashes: message.transactionHashes.map((hash) => client_common_1.common.uInt256ToHex(hash)),
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56 | blockIndex: context.blockIndex,
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57 | nonce: message.nonce,
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58 | timestamp: payload.timestamp,
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59 | nextConsensus: message.nextConsensus,
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60 | },
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61 | });
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62 | const verified = client_common_1.crypto.verify({
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63 | message: newContext.header.message,
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64 | signature: message.signature,
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65 | publicKey: context.validators[payload.validatorIndex],
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66 | });
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67 | if (!verified) {
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68 | return { context };
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69 | }
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70 | let nextContext = newContext;
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71 | for (const hash of newContext.transactionHashes.slice(1)) {
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72 | const transaction = node.memPool[hash];
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73 | if (transaction !== undefined) {
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74 | const res = await common_1.addTransaction({
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75 | context: nextContext,
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76 | node,
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77 | privateKey,
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78 | transaction,
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79 | verify: false,
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80 | consensusContext,
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81 | });
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82 | if (!(res.context instanceof context_1.RequestReceivedContext)) {
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83 | return res;
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84 | }
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85 | nextContext = res.context;
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86 | }
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87 | }
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88 | const result = await common_1.addTransaction({
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89 | context: nextContext,
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90 | node,
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91 | privateKey,
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92 | transaction: message.minerTransaction,
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93 | verify: true,
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94 | consensusContext,
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95 | });
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96 | if (!(result.context instanceof context_1.RequestReceivedContext)) {
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97 | return result;
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98 | }
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99 | context = result.context;
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100 | node.syncMemPool();
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101 | return { context };
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102 | };
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103 | const handlePrepareResponse = async ({ context, node, payload, message, }) => {
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104 | if (context instanceof context_1.HeaderContext &&
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105 | context.signatures[payload.validatorIndex] === undefined &&
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106 | client_common_1.crypto.verify({
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107 | message: context.header.message,
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108 | signature: message.signature,
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109 | publicKey: context.validators[payload.validatorIndex],
|
110 | })) {
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111 | const mutableSignatures = [...context.signatures];
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112 | mutableSignatures[payload.validatorIndex] = message.signature;
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113 | const newContext = context.cloneSignatures({ signatures: mutableSignatures });
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114 | return common_1.checkSignatures({ context: newContext, node });
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115 | }
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116 | return { context };
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117 | };
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118 | exports.handleConsensusPayload = async ({ context, node, privateKey, payload, consensusContext, }) => {
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119 | const { consensusMessage } = payload;
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120 | if (payload.validatorIndex === context.myIndex ||
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121 | payload.version !== context.version ||
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122 | !client_common_1.common.uInt256Equal(payload.previousHash, context.previousHash) ||
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123 | payload.blockIndex !== context.blockIndex ||
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124 | payload.validatorIndex >= context.validators.length ||
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125 | (consensusMessage.type !== node_core_1.ConsensusMessageType.ChangeView && consensusMessage.viewNumber !== context.viewNumber)) {
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126 | return { context };
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127 | }
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128 | switch (consensusMessage.type) {
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129 | case node_core_1.ConsensusMessageType.ChangeView:
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130 | return handleChangeView({
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131 | context,
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132 | node,
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133 | payload,
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134 | consensusContext,
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135 | message: consensusMessage,
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136 | });
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137 | case node_core_1.ConsensusMessageType.PrepareRequest:
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138 | return handlePrepareRequest({
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139 | context,
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140 | node,
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141 | privateKey,
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142 | payload,
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143 | consensusContext,
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144 | message: consensusMessage,
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145 | });
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146 | case node_core_1.ConsensusMessageType.PrepareResponse:
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147 | return handlePrepareResponse({
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148 | context,
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149 | node,
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150 | payload,
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151 | message: consensusMessage,
|
152 | });
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153 | default:
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154 | utils_1.utils.assertNever(consensusMessage);
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155 | throw new Error('For TS');
|
156 | }
|
157 | };
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158 |
|
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sContent":["import { common, crypto, PrivateKey } from '@neo-one/client-common';\nimport {\n  ChangeViewConsensusMessage,\n  ConsensusMessageType,\n  ConsensusPayload,\n  Node,\n  PrepareRequestConsensusMessage,\n  PrepareResponseConsensusMessage,\n  Transaction,\n} from '@neo-one/node-core';\nimport { utils as commonUtils } from '@neo-one/utils';\nimport { addTransaction, checkExpectedView, checkSignatures, initializeConsensus } from './common';\nimport { ConsensusContext } from './ConsensusContext';\nimport { Context, HeaderContext, RequestReceivedContext } from './context';\nimport { Result } from './types';\n\nconst handleChangeView = ({\n  context: contextIn,\n  node,\n  payload,\n  consensusContext,\n  message,\n}: {\n  readonly context: Context;\n  readonly node: Node;\n  readonly payload: ConsensusPayload;\n  readonly consensusContext: ConsensusContext;\n  readonly message: ChangeViewConsensusMessage;\n}): Result<Context> => {\n  let context = contextIn;\n  const viewNumber = message.newViewNumber;\n  if (viewNumber > context.expectedView[payload.validatorIndex]) {\n    const mutableExpectedView = [...context.expectedView];\n    mutableExpectedView[payload.validatorIndex] = viewNumber;\n    context = context.cloneExpectedView({ expectedView: mutableExpectedView });\n    if (checkExpectedView({ context, viewNumber })) {\n      return initializeConsensus({\n        node,\n        context,\n        viewNumber,\n        consensusContext,\n      });\n    }\n  }\n\n  return { context };\n};\n\nconst TEN_MINUTES_IN_SECONDS = 10 * 60;\n\nconst handlePrepareRequest = async ({\n  context: contextIn,\n  node,\n  privateKey,\n  payload,\n  consensusContext,\n  message,\n}: {\n  readonly context: Context;\n  readonly node: Node;\n  readonly privateKey: PrivateKey;\n  readonly payload: ConsensusPayload;\n  readonly consensusContext: ConsensusContext;\n  readonly message: PrepareRequestConsensusMessage;\n}): Promise<Result<Context>> => {\n  let context = contextIn;\n  if (\n    context.type !== 'backup' ||\n    context instanceof RequestReceivedContext ||\n    payload.validatorIndex !== context.primaryIndex ||\n    payload.timestamp > consensusContext.nowSeconds() + TEN_MINUTES_IN_SECONDS\n  ) {\n    return { context };\n  }\n  const header = await node.blockchain.header.get({\n    hashOrIndex: context.previousHash,\n  });\n\n  if (payload.timestamp <= header.timestamp) {\n    return { context };\n  }\n\n  const mutableSignatures = [];\n  mutableSignatures[payload.validatorIndex] = message.signature;\n  const newContext = new RequestReceivedContext({\n    viewNumber: context.viewNumber,\n    myIndex: context.myIndex,\n    primaryIndex: context.primaryIndex,\n    expectedView: context.expectedView,\n    validators: context.validators,\n    blockReceivedTimeSeconds: context.blockReceivedTimeSeconds,\n    transactions: {},\n    signatures: mutableSignatures,\n    header: {\n      type: 'new',\n      previousHash: context.previousHash,\n      transactionHashes: message.transactionHashes.map((hash) => common.uInt256ToHex(hash)),\n\n      blockIndex: context.blockIndex,\n      nonce: message.nonce,\n      timestamp: payload.timestamp,\n      nextConsensus: message.nextConsensus,\n    },\n  });\n\n  const verified = crypto.verify({\n    message: newContext.header.message,\n    signature: message.signature,\n    publicKey: context.validators[payload.validatorIndex],\n  });\n\n  if (!verified) {\n    return { context };\n  }\n\n  let nextContext = newContext;\n  // tslint:disable-next-line no-loop-statement\n  for (const hash of newContext.transactionHashes.slice(1)) {\n    const transaction = node.memPool[hash] as Transaction | undefined;\n    if (transaction !== undefined) {\n      const res = await addTransaction({\n        context: nextContext,\n        node,\n        privateKey,\n        transaction,\n        verify: false,\n        consensusContext,\n      });\n\n      if (!(res.context instanceof RequestReceivedContext)) {\n        return res;\n      }\n      // eslint-disable-next-line\n      nextContext = res.context;\n    }\n  }\n\n  const result = await addTransaction({\n    context: nextContext,\n    node,\n    privateKey,\n    transaction: message.minerTransaction,\n    verify: true,\n    consensusContext,\n  });\n\n  if (!(result.context instanceof RequestReceivedContext)) {\n    return result;\n  }\n  // eslint-disable-next-line\n  context = result.context;\n  node.syncMemPool();\n\n  return { context };\n};\n\nconst handlePrepareResponse = async ({\n  context,\n  node,\n  payload,\n  message,\n}: {\n  readonly context: Context;\n  readonly node: Node;\n  readonly payload: ConsensusPayload;\n  readonly message: PrepareResponseConsensusMessage;\n}): Promise<Result<Context>> => {\n  if (\n    context instanceof HeaderContext &&\n    context.signatures[payload.validatorIndex] === undefined &&\n    crypto.verify({\n      message: context.header.message,\n      signature: message.signature,\n      publicKey: context.validators[payload.validatorIndex],\n    })\n  ) {\n    const mutableSignatures = [...context.signatures];\n    mutableSignatures[payload.validatorIndex] = message.signature;\n    const newContext = context.cloneSignatures({ signatures: mutableSignatures });\n\n    return checkSignatures({ context: newContext, node });\n  }\n\n  return { context };\n};\n\nexport const handleConsensusPayload = async ({\n  context,\n  node,\n  privateKey,\n  payload,\n  consensusContext,\n}: {\n  readonly context: Context;\n  readonly node: Node;\n  readonly privateKey: PrivateKey;\n  readonly payload: ConsensusPayload;\n  readonly consensusContext: ConsensusContext;\n}): Promise<Result<Context>> => {\n  const { consensusMessage } = payload;\n  if (\n    payload.validatorIndex === context.myIndex ||\n    payload.version !== context.version ||\n    !common.uInt256Equal(payload.previousHash, context.previousHash) ||\n    payload.blockIndex !== context.blockIndex ||\n    payload.validatorIndex >= context.validators.length ||\n    (consensusMessage.type !== ConsensusMessageType.ChangeView && consensusMessage.viewNumber !== context.viewNumber)\n  ) {\n    return { context };\n  }\n\n  switch (consensusMessage.type) {\n    case ConsensusMessageType.ChangeView:\n      return handleChangeView({\n        context,\n        node,\n        payload,\n        consensusContext,\n        message: consensusMessage,\n      });\n\n    case ConsensusMessageType.PrepareRequest:\n      return handlePrepareRequest({\n        context,\n        node,\n        privateKey,\n        payload,\n        consensusContext,\n        message: consensusMessage,\n      });\n\n    case ConsensusMessageType.PrepareResponse:\n      return handlePrepareResponse({\n        context,\n        node,\n        payload,\n        message: consensusMessage,\n      });\n\n    default:\n      commonUtils.assertNever(consensusMessage);\n      throw new Error('For TS');\n  }\n};\n"]}
|