部署使用两个端口的应用程序

我正在用 Vue 实现一个网络应用程序。在我的应用程序中，我使用 Pusher 来实现实时多用户通信。

在本地，该应用程序在“ http://localhost:8080 ”上运行，我在“ http://localhost:5000 ”上设置了一个 node.js 服务器，该服务器管理推送器共享频道上的用户订阅和它们之间的事件共享。该应用程序运行良好。现在我想将它部署在托管服务器上以使其在 Internet 上运行。

我的问题与需要使用两个不同的端口有关。特别是我不知道如何组织我的“server.js”文件来做到这一点（或者像 Heroku 这样的平台是否可以支持使用两个端口）。下面我发布了我的实际“server.js”文件。我希望你可以帮助我。

const express = require('express')
const path = require('path')
const bodyParser = require('body-parser')
const app = express()
const Pusher = require('pusher')
const crypto = require('crypto')
const cors = require('cors')


//initialize Pusher with your appId, key and secret
const pusher = new Pusher({
   appId: '***',
key: '******',
secret: '*****',
cluster: 'eu',
useTLS: true
})

// Body parser middleware
app.use(bodyParser.json())
app.use(bodyParser.urlencoded({ extended: false}))
app.use(cors())
// The code below helps to fix any potential CORS issue.
app.use((req, res, next) => {
  // Website you wish to allow to connect
  res.setHeader('Access-Control-Allow-Origin', '*')
  // Request methods you wish to allow
  res.setHeader('Access-Control-Allow-Methods', 'GET, POST, OPTIONS, PUT, PATCH, DELETE')
  // Request headers you wish to allow
  res.setHeader('Access-Control-Allow-Headers', 'X-Requested-With,content-type')

  // Set to true if you need the website to include cookies in the requests sent
  // to the API (e.g. in case you use sessions)
  res.setHeader('Access-Control-Allow-Credentials', false)
  // Pass to next layer of middleware
  next()
})

// Index API route for the Express app
app.get('/', (req, res) => {
  res.send('Welcome')
})

// API route used by Pusher as a way of authenticating users
app.post('/pusher/auth', (req, res) => {
  let socketId = req.body.socket_id
  let channel = req.body.channel_name
  // Generate a random string and use as presence channel user_id
  let presenceData = {
    user_id: crypto.randomBytes(16).toString('hex')
  }
  let auth = pusher.authenticate(socketId, channel, presenceData)
  res.send(auth)
})

// Set port to be used by Node.js
app.set('port', (5000))

app.listen(app.get('port'), () => {
  console.log('Node app is running on port', app.get('port'))
})