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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,58 @@ | ||
| // @flow | ||
|
|
||
| import WebSocket from 'ws'; | ||
| import Blockchain, { Block, Transaction } from '../blockchain'; | ||
| import Miner from '../miner'; | ||
| import P2pServer from './p2p_server'; | ||
| import MESSAGE_TYPES from './message_types'; | ||
| import type { MessageData } from './message_types'; | ||
|
|
||
| class Router { | ||
| blockchain: Blockchain; | ||
| miner: Miner; | ||
| sockets: Array<WebSocket>; | ||
| p2pServer: P2pServer; | ||
|
|
||
| constructor(blockchain: Blockchain, p2pEnabled: bool = true) { | ||
| this.blockchain = blockchain; | ||
| this.p2pServer = new P2pServer(this.blockchain, this.messageHandler.bind(this), p2pEnabled); | ||
| } | ||
|
|
||
| subscribe(miner: Miner) { | ||
| this.miner = miner; | ||
| } | ||
|
|
||
| pushTransaction(tx: Transaction) { | ||
| if (this.miner) { | ||
| this.miner.pushTransaction(tx); | ||
| } | ||
| this.p2pServer.broadcastTransaction(tx); | ||
| } | ||
|
|
||
| mineDone() { | ||
| this.p2pServer.broadcastMined(); | ||
| } | ||
|
|
||
| messageHandler(data: MessageData) { | ||
| switch (data.type) { | ||
| case MESSAGE_TYPES.BLOCK_CHAIN: | ||
| this.blockchain.replaceChain(data.payload.map(o => Block.fromJSON(o))); | ||
| break; | ||
| case MESSAGE_TYPES.TRANSACTION: | ||
| if (this.miner) { | ||
| this.miner.pushTransaction(Transaction.fromJSON(data.payload)); | ||
| } | ||
| break; | ||
| case MESSAGE_TYPES.MINED: | ||
| this.blockchain.replaceChain(data.payload.map(o => Block.fromJSON(o))); | ||
| if (this.miner) { | ||
| this.miner.clearTransactions(); | ||
| } | ||
| break; | ||
| default: | ||
| break; | ||
| } | ||
| } | ||
| } | ||
|
|
||
| export default Router; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,13 @@ | ||
| const MESSAGE_TYPES = { | ||
| BLOCK_CHAIN: 'BLOCK_CHAIN', | ||
| TRANSACTION: 'TRANSACTION', | ||
| MINED: 'MINED', | ||
| }; | ||
|
|
||
| type MessageData = { | ||
| type: string, | ||
| payload: any, | ||
| }; | ||
|
|
||
| export default MESSAGE_TYPES; | ||
| export type { MessageData }; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,78 @@ | ||
| // @flow | ||
|
|
||
| import WebSocket from 'ws'; | ||
| import Blockchain, { Transaction } from '../blockchain'; | ||
| import MESSAGE_TYPES from './message_types'; | ||
| import type { MessageData } from './message_types'; | ||
| import { P2P_PORT, PEERS } from '../config'; | ||
|
|
||
| class P2pServer { | ||
| blockchain: Blockchain; | ||
| messageHandler: Function; | ||
| sockets: Array<WebSocket>; | ||
|
|
||
| constructor(blockchain: Blockchain, messageHandler: Function, p2pEnabled: bool) { | ||
| this.sockets = []; | ||
| this.blockchain = blockchain; | ||
| this.messageHandler = messageHandler; | ||
| if (p2pEnabled) { | ||
| this.listen(); | ||
| } | ||
| } | ||
|
|
||
| listen() { | ||
| try { | ||
| const server = new WebSocket.Server({ port: P2P_PORT }); | ||
| server.on('connection', socket => this.connect2Socket(socket)); | ||
| this.connect2Peers(); | ||
| console.log(`P2P Listening on ${P2P_PORT}`); | ||
| } catch (e) { | ||
| console.log('P2Pサーバの起動に失敗しました。'); | ||
| } | ||
| } | ||
|
|
||
| connect2Peers() { | ||
| PEERS.forEach((peer) => { | ||
| const socket = new WebSocket(peer); | ||
| socket.on('open', () => this.connect2Socket(socket)); | ||
| }); | ||
| } | ||
|
|
||
| connect2Socket(socket: WebSocket) { | ||
| this.sockets.push(socket); | ||
| console.log('Socket connected'); | ||
| socket.on('message', (message) => { | ||
| console.log(`received from peer: ${message}`); | ||
| const data: MessageData = JSON.parse(message); | ||
| this.messageHandler(data); | ||
| }); | ||
| this.sendBlockchain(socket); | ||
| } | ||
|
|
||
| sendBlockchain(socket: WebSocket) { | ||
| P2pServer.sendData(socket, { | ||
| type: MESSAGE_TYPES.BLOCK_CHAIN, | ||
| payload: this.blockchain.chain.map(b => b.toJSON()), | ||
| }); | ||
| } | ||
|
|
||
| broadcastTransaction(transaction: Transaction) { | ||
| this.sockets.forEach(socket => P2pServer.sendData(socket, { | ||
| type: MESSAGE_TYPES.TRANSACTION, | ||
| payload: transaction.toJSON(), | ||
| })); | ||
| } | ||
|
|
||
| broadcastMined() { | ||
| this.sockets.forEach(socket => P2pServer.sendData(socket, { | ||
| type: MESSAGE_TYPES.MINED, | ||
| payload: this.blockchain.chain.map(b => b.toJSON()), | ||
| })); | ||
| } | ||
|
|
||
| static sendData(socket: WebSocket, data: MessageData) { | ||
| socket.send(JSON.stringify(data)); | ||
| } | ||
| } | ||
|
|
||
| export default P2pServer; |
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