Linux Node.js如何进行网络编程

在Linux环境下使用Node.js进行网络编程，主要依赖于内置的http、https、net、dgram等模块。以下是一些基本的网络编程示例：

1. 创建一个简单的HTTP服务器（使用http模块）：

const http = require('http'); const server = http.createServer((req, res) => { res.writeHead(200, { 'Content-Type': 'text/plain' }); res.end('Hello World\n'); }); server.listen(3000, () => { console.log('Server running at http://localhost:3000/'); }); 

2. 创建一个简单的HTTPS服务器（使用https模块）：

const https = require('https'); const fs = require('fs'); const options = { key: fs.readFileSync('your-private-key.pem'), cert: fs.readFileSync('your-certificate.pem') }; const server = https.createServer(options, (req, res) => { res.writeHead(200, { 'Content-Type': 'text/plain' }); res.end('Hello World\n'); }); server.listen(3001, () => { console.log('Server running at https://localhost:3001/'); }); 

3. 创建一个TCP客户端（使用net模块）：

const net = require('net'); const client = new net.Socket(); client.connect(3002, 'localhost', () => { console.log('Connected to server'); client.write('Hello Server!'); }); client.on('data', (data) => { console.log(`Received data: ${data}`); client.destroy(); // 关闭连接 }); client.on('close', () => { console.log('Connection closed'); }); 

4. 创建一个UDP服务器（使用dgram模块）：

const dgram = require('dgram'); const server = dgram.createSocket('udp4'); server.on('listening', () => { const address = server.address(); console.log(`Server listening ${address.address}:${address.port}`); }); server.on('message', (msg, rinfo) => { console.log(`Server got: ${msg} from ${rinfo.address}:${rinfo.port}`); }); server.bind(3003); 

5. 创建一个UDP客户端（使用dgram模块）：

const dgram = require('dgram'); const client = dgram.createSocket('udp4'); const message = Buffer.from('Hello Server!'); client.send(message, 3003, 'localhost', (err) => { if (err) throw err; console.log('Message sent!'); }); client.on('listening', () => { const address = client.address(); console.log(`Client listening ${address.address}:${address.port}`); }); client.on('message', (msg, rinfo) => { console.log(`Client received: ${msg} from ${rinfo.address}:${rinfo.port}`); }); 

这些示例展示了如何在Linux环境下使用Node.js进行基本的网络编程。你可以根据自己的需求选择合适的模块和方法进行开发。