socket.io简单使用 - Githubissues

安装socket.io

npm install --save socket.io

demo目录

├── index.js
├── node_modules
├── package.json
└── views
    └── index.html

服务端代码

./index.js

const http = require('http');
const fs = require('fs');
const socketIO = require('socket.io');
const server = http.createServer((req, res) => {
  let html = fs.readFileSync('./views/index.html'); 
  res.end(html);
}).listen(3000,'127.0.0.1', () => {
  console.log('socket.io server is running at http://127.0.0.1:3000/');
});

// socket io 操作
const io = socketIO.listen(server);
io.sockets.on('connection', (socket) => {
  console.log('socket.io connected');

  // 监听socket断开事件
  socket.on('disconnect',() => {
    console.log('socket.io disconnected');
  });

  // 轮询进行 服务端推送 自定义事件
  let serverNum = 0;
  setInterval(() => {
    serverNum ++;
    socket.emit('server.message', { serverNum: serverNum });
  }, 1000);

  // 监听客户端推送 自定义事件
  socket.on('client.message', (data) => {
    console.log('[client.message]', data)
  });

});

客户端代码

./views/index.html

<!DOCTYPE html>
<html>
  <head>
    <title>demo</title>
  </head>
  <body>
    <h1>socket.io demo</h1>
    <script src="/socket.io/socket.io.js"></script>

    <script>
        const socket = io.connect('http://127.0.0.1:3000');
        // 监听 socket 连接事件
        socket.on('connection', () => {
            console.log('socket.io connected');
            socket.open();
        });

        // 监听 socket 断开事件
        socket.on('disconnect',() => {
            console.log('socket.io disconnected');
            socket.close();
        });

        let clientNum = 0;
        // 轮询 推送客户端信息 到服务端
        setInterval(() => {
            clientNum ++;
            socket.emit('client.message', { clientNum: clientNum });
        }, 1000);

        // 监听服务端 自定义信息事件
        socket.on('server.message', (data) => {
            console.log('[server.message]', data)
        });

    </script>
  </body>
</html>

启动服务

node index.js

chenshenhai / blog

socket.io简单使用 #22

安装socket.io

demo目录

服务端代码

客户端代码

启动服务