写了一个简单的demo，直接上代码吧。用的时候注意一下版本号，可能 socket.io 的 API 有修改~

效果图

index.html

    
    
    
    
    
    
    


    

    

        
    
    

        

            
        
        

            发送
        
        
    

socket_server.js

var app = require('http').createServer(handler)
var io = require('socket.io')(app);
var fs = require('fs');

app.listen(8080);

function handler(req, res) {
    res.writeHead(200, { 'Content-Type': 'text/html' });
    res.end('
Hello Socket Lover!
');
}

io.on('connection', function (socket) {
    socket.emit('news', { data : 'server world' });

    socket.on('test_event', function (data) {
        console.log('receive data from client. data : ' + JSON.stringify(data));

        var str = data.data + "(from server by " + new Date().getTime() + ")";
        socket.emit('news', { data : str});
    });

    socket.on('disconnect', function () {
        console.log('websocket close. -- server log');
    });
    
    // var num = 1;
    // setInterval(function xx(params) {
    //     socket.emit('news', { num: num++});
    // }, 1 * 1000);
});