我在连接到我的www.example.com服务器时遇到问题socket.io，我希望用户在打开时连接。连接，这是我的服务器代码

const express = require('express');
const http = require('http');
const socketio = require('socket.io');
const cors = require('cors');
const {getUserList, get_Current_User, user_Disconnect, join_User, playByTurn } = require("./dummyuser");
//Set static folder
const app = express();
app.use(cors());
const server = http.createServer(app);
const io = socketio(server, {
     cors: {
     origin: "http://localhost:8080",
     methods: ["GET","POST"]
                                }
});
const PORT = process.env.PORT || 8000;


//Run when client connect
//Run when client connect
io.on('connection', socket => {
    console.log(`Connected: ${socket.id}`);

   //Code

    });
    socket.on('disconnect', () => {
        console.log(`Disconnected: ${socket.id}`);
       //Code
    })

});

server.listen(PORT, () => console.log(`Server running on port ${PORT}`));

在我的本地主机上，它运行得很好，但是在我部署它之后，它说它不能从我的服务器上获取，有什么想法吗？谢谢