Nodejs HTTP & Socket 集群

app.js

const express = require('express')

const app = express()

app.get('/', (req, res) => {
    console.log(`（进程${process.pid}）-- get request`)
    res.send('Hello world')
})

module.exports = app

udpServer.js

const dgram = require('dgram')
const udpServer = dgram.createSocket('udp4')

udpServer.on('message', (msg, rinfo) => {
    console.log(`（进程${process.pid}）-- 服务器接收到来自 ${rinfo.address}:${rinfo.port} 的 ${msg}`);
})

udpServer.on('listening', () => {
    const address = udpServer.address();
    console.log(`（进程${process.pid}）-- 服务器监听 ${address.address}:${address.port}`);
});

module.exports = udpServer

index.js

const app = require('./app')
const udpServer = require('./udpServer')

const cluster = require('cluster')
const numCPUs = require('os').cpus().length

const HTTP_PORT = 3003
const UDP_PORT = 9999

// app.listen(HTTP_PORT, () => {
//     console.log(`HTTP listening ${HTTP_PORT}`)
// })

// udpServer.bind(UDP_PORT)

/**
 * 集群
 */
if (cluster.isMaster) {

    console.log(`主进程 ${process.pid} 正在运行`);

    // 衍生工作进程。
    for (let i = 0; i < numCPUs; i++) {
        cluster.fork();
    }

} else {

    app.listen(HTTP_PORT, () => {
        console.log(`（进程${process.pid}）-- HTTP listening ${HTTP_PORT}`)
    })

    udpServer.bind(UDP_PORT)

    console.log(`工作进程 ${process.pid} 已启动`);
    
}

运行结果