安装

npm install ws

服务端

server.js

var WebSocketServer = require('ws').Server  , wss = new WebSocketServer({port: 8080});wss.on('connection', function(ws) {    ws.on('message', function(message) {        console.log('received: %s', message);    });    ws.send('something');});

运行：node server.js

客户端

client.htm

            
WebSocket
        
    
         
    

client.js

var ws = new WebSocket("ws://127.0.0.1:8080/");         ws.onopen = function() {       alert("Opened");       ws.send("I'm client");    };        ws.onmessage = function (evt) {         alert(evt.data);    };        ws.onclose = function() {       alert("Closed");    };        ws.onerror = function(err) {       alert("Error: " + err);    };

参考

https://github.com/einaros/ws