我有一个套接字IO连接问题

我正在反应js和使用套接字和expression来build立一个多人游戏

我得到这个错误：

polling-xhr.js：264 GET https：// localhost：3000 / socket.io /？EIO = 3＆transport = polling＆t = LqjOuC2 net :: ERR_CONNECTION_CLOSED

我谷歌这个错误5倍，并调整我的import应用程序，套接字，快递和http，

Server.js

var app = require('express')(); var http = require('http').Server(app); const port = process.env.PORT || 3001; http.listen(port, ()=> {console.log("+++Express Server with Socket Running!!!")}) var io = require('socket.io').listen(http); .... .... 

前端

 import React, { Component } from 'react'; import Test from "./Test" import io from "socket.io-client" import {BrowserRouter as Router, Route, Link} from 'react-router-dom' // *********************************** // Handles user creation and contains routes to game // *********************************** class App extends Component { constructor(props){ super(props) this.home = this.home.bind(this) this.socket = io.connect("https://localhost:3000") } .... .... 

我的package.json有一个代理设置在：“ https：// localhost：3000 / ”

任何人有一个想法如何解决连接错误，任何帮助，非常感谢！