websocket例子：
client
<!DOCTYPE html><html><head> ???<meta charset="UTF-8"> ???<title></title> ???<script src="https://cdn.bootcss.com/socket.io/1.7.2/socket.io.js"></script><body><script> ???var socket = io.connect(‘http://127.0.0.1:8080‘); ???socket.on(‘connect‘,function() { ???????console.log(‘Client has connected to the server!‘); ???????sendMessageToServer(‘hello,now is connected‘); ???}); ???socket.on(‘message‘,function(data) { ???????console.log(‘Received a message from the server!‘,data); ???}); ???socket.on(‘disconnect‘,function() { ???????console.log(‘The client has disconnected!‘); ???}); ???function sendMessageToServer(message) { ???????socket.send(message); ???}</script></body></html>nodeSrv
var http= require(‘http‘), ???io= require(‘socket.io‘);var server= http.createServer(function(req, res){ ???res.end(‘<h1>will see this in http://localhost:8080</h1>‘);});server.listen(8080);var socket= io.listen(server);socket.on(‘connection‘, function(client){ ???var interval= setInterval(function() { ???????client.send(‘This is a message from the server! ‘ + new Date().getTime()); ???},5000); ???client.on(‘message‘,function(event){ ???????console.log(‘Received message from client!‘,event); ???}); ???client.on(‘disconnect‘,function(){ ???????clearInterval(interval); ???????console.log(‘Server has disconnected‘); ???});});web通信技术之websocket
原文地址：http://www.cnblogs.com/hellohello/p/7655893.html