Node.js Socket.io在部署后不工作-引发错误-405（不允许）

使用Angular和Node构建应用程序。集成使用Socket.io构建的聊天应用程序。 在本地测试时工作良好。即使在将Node JS后端部署到服务器机器（AWS EC2实例）之后，我们的本地angular应用程序也可以访问后端服务器。 但在EC2中部署angular应用程序后，聊天模块不工作，并抛出错误“POST 405（不允许）” 请在下面找到服务器端代码

require('./global_constants');

const Knex = require('knex');
const morgan = require('morgan');
const express = require('express');
const bodyParser = require('body-parser');
const promiseRouter = require('express-promise-router');
const rs = require('rocket-store');
const knexConfig = require('./knexfile');
const registerApi = require('./api');
const adminName = require('./config/config').admin.name;
const dbObj = require('./controllers/dbConn');
const cleaner = require('./controllers/textCleaner');
const fs = require('fs');
const rimraf = require('rimraf');
const socketIO = require('socket.io');
const db = dbObj.db;

const {
  Model
} = require('objection');
const cors = require('cors');

const knex = Knex(knexConfig[process.env.NODE_ENV || 'production']);

Model.knex(knex);

const router = promiseRouter();

const app = express()
  .use(bodyParser.json())
  .use(morgan('dev'))
  .use(cors(
    {
      credentials: true,
      origin: ['http://localhost:4200', 'http://localhost:4201']
    }
  ))

app.use('/api/', router).set('json spaces', 2);

app.use((req, res, next) => {
  res.setHeader('Content-Type', 'application/json');
  res.setHeader("Access-Control-Allow-Origin", "*");
  res.setHeader("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept");
  next();
})


registerApi(router);

app.use((err, req, res, next) => {
  if (err) {
    console.error(err);
    res.status(err.statusCode || err.status || 500).send(err || {});
  } else {
    next();
  }
});

const http = require('https').createServer(app);
const io = socketIO(http);
http.listen(3000, function () {
  console.log('listening on *:3000');
});

rs.options({
  data_storage_area: "./msg",
  data_format: rs._FORMAT_JSON,
});


io.on('connection', socket => {
  socket.on('new-user', async (room, userId) => {
    // some logic goes here
  })

  socket.on('new-message', async (room) => {
    // Some logic
  })

  socket.on('user-disconnect', async (room, userId) => {
    // Some logic
  })
})

请在下面找到客户端代码

import { Injectable } from '@angular/core';
import * as io from 'socket.io-client';
import { Observable } from 'rxjs';

@Injectable({
  providedIn: 'root'
})
export class ChatService {

  private socket;
  constructor() {
    this.socket = io();
  }

  public newUser(roomName, id) {
    this.socket.emit('new-user', id, roomName);
  }
  public userDisconnected(roomName,id){
    this.socket.emit('user-disconnect',roomName,id)
  }

  public sendMessage(roomName, message,fullname,) {
    this.socket.emit('new-message',roomName,message,fullname);
  }

  public getconnect = () =>{
    return Observable.create((observer) => {
      this.socket.on('user-connected', (message,prev,socketId,flag) => {
          observer.next({msg:message,all_prev_msg:prev,socketId:socketId});
      });
    });
  }
  public getDisconnected = () =>{
    return Observable.create((observer) => {
      this.socket.on('user-disconnected', (message) => {
          observer.next(message);
      });
    });
  }

  public getMessages = () => {
    return Observable.create((observer) => {
      this.socket.on('new-message', (room,message,userId) => {
          observer.next({text:message,sender:userId});
      });
    });
  }

}

如果还有任何问题，请告诉我。

---

非常感谢。

看起来您的ec2服务器中有nginx，如果有，您需要下面的配置

location /static {
    try_files $uri =404;
}

location /socket.io {
        proxy_pass http://node;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        proxy_set_header Host $host;
        proxy_cache_bypass $http_upgrade;
        add_header  Front-End-Https   on;
}

error_page 405 @nodejs;