nodejs中net模块（TCP）的基本使用方法

client.js

const net = require('net');

// 客户端
const client = net.connect({port: 8124}, () => {
  //'connect' listener
  console.log('connected to server!');
  client.write('client send...\n');
});

client.write('world!\r\n');

client.on('data', (data) => {
  console.log(data.toString());
  client.end();
});

client.on('end', () => {
  console.log('disconnected from server');
});

server.js

'use strict';
const net = require('net');

// 服务端
const server = net.createServer((socket) => {
  console.log('client connected');
  // socket是一个可读可写流。
  socket.on('end', () => {
    console.log('client disconnected');
  });
  socket.write('hello\r\n');
  socket.pipe(socket);
});

server.on('error', (err) => {
  throw err;
});

server.listen(8124, () => {
  console.log('server bound');
});