Question

我正在尝试获取heroku的服务器或端口；这在localhost上工作正常，但是socket.io功能在heroku上不起作用。

这是我在heroku上遇到的错误。

websocket.js：120 WebSocket连接到 'wss：// localhost：5000 / socket.io /？EIO = 3＆transport = websocket'失败：建立连接错误：net :: ERR_CONNECTION_REFUSED p.doOpen @ websocket.js：120

App.js

const express = require('express');
const bodyParser = require('body-parser');
const  app = express();
var http = require('http').Server(app);
var io = require('socket.io')(http);
var PORT = process.env.PORT || 5000;

if (process.env.NODE_ENV === 'production') {

  app.use(express.static('client/build'));

  app.get('*', (req, res) => {
    res.sendFile(path.resolve(__dirname, 'client', 'build', 'index.html'));
  });
}

io.on('connection', (socket)=>{
    console.log(socket.id);

    socket.on('SEND_MESSAGE', (data)=>{
        io.emit('RECEIVE_MESSAGE', data);

    })


});

http.listen(PORT,function(){
  console.log('listening on port %s',PORT);
});

Chat.js

// this has to be something other than localhost, it needs to work vice versa.

this.socket = socketIOClient('localhost:5000');

this.socket.on('RECEIVE_MESSAGE', function(data){
    addMessage(data);
});

Answer 1

这是一个硬编码的解决方法

app.js

  this.socket = socketIOClient.connect(HEROKU_PATH_HERE, {secure: true});

   if(!this.socket){
        this.socket = socketIOClient('localhost:5000');
   }

React Socket IO未连接到Heroku服务器

1 个答案: