Question

我正在尝试编写一个基于Nodejs的简单WebSocket服务器应用程序，但运行npm run dev时无法启动它。

这是我的package.json文件：

"name": "lg-chain",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "jest --watchAll",
    "dev-test": "nodemon dev-test",
    "start": "node ./app",
    "dev": "nodemon ./app"
  },
  "keywords": [],
  "license": "MIT",
  "devDependencies": {
    "jest": "24.1.0",
    "nodemon": "1.18.9"
  },
  "dependencies": {
    "body-parser": "1.18.3",
    "crypto-js": "3.1.9-1",
    "express": "4.16.4",
    "ws": "6.1.3"
  }
}

我同时开发了http服务器和websocket服务器，我希望它们都将在我运行上述命令时启动。

下面是我的websocket服务器：

const Websocket = require('ws');


const P2P_PORT = process.env.P2P_PORT || 5001;
const peers = process.env.PEERS ? process.env.PEERS.split(',') : [];

class P2pServer {
    constructor(blockchain) {
        this.blockchain = blockchain;
        this.sockets = [];
    }

    listen() {
        const server = new Websocket.Server({ port: P2P_PORT });
        server.on('connection', socket => this.connectSocket(socket));

        this.connectToPeers();

        console.log(`Listening for peer-to-peer connections on: ${P2P_PORT}`);
    }

    connectToPeers() {
        peers.forEach((peer) => {
            const socket = new Websocket(peer);

            socket.on('open', () => this.connectSocket);
        });
    }

    connectSocket(socket) {
        this.sockets.push(socket);
        console.log('Socket connected');
    }
}

module.exports = P2pServer;

这是我的快递服务器：

const express = require('express');
const bodyParser = require('body-parser');
const Blockchain = require('../blockchain');
const P2pServer = require('./p2p-server');

const HTTP_PORT = process.env.HTTP_PORT || 3001;

const app = express();
const bc = new Blockchain();
const p2pServer = new P2pServer(bc);

app.use(bodyParser.urlencoded({ extended: false }));
app.use(bodyParser.json());

app.get('/blocks', (req, res) => {
    res.json(bc.chain);
});

app.post('/mine', (req, res) => {
    const block = bc.addBlock(req.body.data);
    console.log(`New block added: ${block.toString()}`);

    res.redirect('/blocks');
});

app.listen(HTTP_PORT, () => console.log(`Listening on port ${HTTP_PORT}`));
p2pServer.listen();

我的Express服务器启动了，但是我的Websocket服务器绝对没有任何反应。我在任何地方都没有任何错误。如何开始使用websockets进行故障排除？

Websocket服务器未与节点服务器同时启动

0 个答案: