用 express-ws 和 socket.io 分别构建 websocket 服务器端有区别吗

express-ws 构建的服务，可以用第三方 client 链接发送数据

const express = require('express'); const app = express(); const expressWs = require('express-ws')(app); const morgan = require('morgan'); const compression = require('compression'); const serveStatic = require('serve-static'); const basicAuth = require('basic-auth-connect'); const user = process.env.USER; const pass = process.env.PASS; let cOnnects= []; app.set('port', process.env.PORT || 8080); if (user && pass) { app.use(basicAuth(user, pass)); } app.use(morgan('dev')); app.use(compression()); app.use(serveStatic(`${__dirname}/public`)); app.ws('/', (ws, req) => { connects.push(ws); ws.on('message', message => { console.log('Received -', message); connects.forEach(socket => { socket.send(message); }); }); ws.on('close', () => { cOnnects= connects.filter(cOnn=> { return (cOnn=== ws) ? false : true; }); }); }); app.listen(app.get('port'), () => { console.log('Server listening on port %s', app.get('port')); }); 

socket.io 构建的服务第三方 client 连接不上，但是 demo 可以发送数据

var app = require('express')(); var http = require('http').Server(app); var io = require('socket.io')( http); var port = process.env.PORT || 3000; app.get('/', function(req, res){ res.sendFile(__dirname + '/index.html'); }); io.on('connection', function(socket){ console.log('connection'); socket.on('chat message', function(msg){ console.log('chat message', msg); io.emit('chat message', msg); }); }); http.listen(port, function(){ console.log('listening on *:' + port); }); 

刚刚接触，没理解问题出现在哪里