node.js ws模块搭建websocket服务端的方法示例

npm install ws

var express = require('express');var http = require('http');var WebSocket = require('ws');var app = express();var server = http.createServer(app);var wss = new WebSocket.Server({server});

wss.on('connection', function connection(ws) {  console.log('连接成功！')  ws.on('message', function incoming(data) {    wss.clients.forEach(function each(client) {      client.send('do you love me?');    });  });});

server.listen(3000, function listening() {  console.log('服务器启动成功！');});    

var socket = `ws://localhost:3000`;var websocket = new WebSocket(socket);