使用docker部署MERN应用时的socket.io错误

Question

我与Docker一起在Digitalocean上部署了一个MERN应用程序。后端和前端看起来不错，但是由于某种原因，已部署的应用程序对Websocket，socket.io连接失败。

错误信息：

我使用 http-proxy-middleware ，我的 setupproxy.js file：（main-be是容器的名称）< /em>

const { createProxyMiddleware } = require('http-proxy-middleware');

module.exports = function (app) {
  app.use(
    '/api',
    createProxyMiddleware({
      target: 'http://main-be:5001',
      changeOrigin: true,
    })
  );
};

frontend/src/utils/axios.js ：

import axios from 'axios';
export const baseURL = 'https://example.com';
export default axios.create({ baseURL });

frontend/src/utils/startants.js ：

const API_BASE_ORIGIN = 'wss://46.111.119.161';
export { API_BASE_ORIGIN };

：

const API_BASE_ORIGIN = 'https://example.com';
const API_BASE_ORIGIN = 'ws://46.111.119.161:5001';
const API_BASE_ORIGIN = 'ws://46.111.119.161'; 
const API_BASE_ORIGIN = 'wss://46.111.119.161'; 
const API_BASE_ORIGIN = 'wss://46.111.119.161:5001';

... ...我在这里尝试了这些，但没有任何效法 socketContext.js ：

  //* socket connection
  useEffect(() => {

    const newSocket = socketIo.connect(API_BASE_ORIGIN, {
      transports: ['websocket'],
    });
    setSocket(newSocket);
    if (!newSocket) return;
    newSocket.on('connect', () => {
      console.log(`Hurrah Socket ${newSocket.id} Connected`);
    });
  }, []);

nginx default.conf 配置文件：

upstream api {
    server main-be:5001;
}

upstream client {
    server main-fe:3000;
}



server {
  listen 80;
  listen [::]:80;
  server_name _;
  return 301 https://$host$request_uri;
}

# main server block
server {
  listen 443 ssl http2 default_server;
  listen [::]:443 ssl http2 default_server;

  server_name _;

  # enable subfolder method reverse proxy confs
  include /config/nginx/proxy-confs/*.subfolder.conf;

  # all ssl related config moved to ssl.conf
  include /config/nginx/ssl.conf;

  client_max_body_size 0;


   
     location / {
        proxy_pass http://client;

        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;
    }


     location /api {
        proxy_pass http://api;

        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;

    }
      location /ws/ {
        proxy_pass http://client;
            
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "Upgrade";
        proxy_set_header Host $host;
    }
}

Answer 1

解决方案：

• 添加wds_socket_port = 0 to react frontend .env 文件。 （，它不会添加不必要的附加端口）

• 编辑nginx default.conf配置文件（不是整个文件）：

    location /socket.io {
    proxy_pass http：// api;
  
    proxy_http_version 1.1;
    proxy_set_header升级$ http_upgrade;
    proxy_set_header连接“升级”;
    proxy_set_header主机$主机; }
   

setUpproxy.js 文件：

const { createProxyMiddleware } = require('http-proxy-middleware');

module.exports = function (app) {
  app.use(
    '/api',
    createProxyMiddleware({
      target: 'http://main-be:5001',
      changeOrigin: true,
    })
  );
};

frontend/src/utlc/utils/axios.js：

import axios from 'axios';
export const baseURL = 'https://example.com';
export default axios.create({ baseURL });

frontend/src/utils/startants.js：

const API_BASE_ORIGIN = 'https://example.com';
export { API_BASE_ORIGIN };

Answer 2

我还使用nginx的React和Nestjs部署Fullstack应用程序遇到了一些困难。这是我的方法：

upstream frontend {
    server frontend:5173;
}

upstream backend {
    server backend:5000;
}
server {
    listen 80;


    location / {
        proxy_pass http://frontend;

    }
    location /api/v1/ {
            proxy_pass http://backend;
            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;
        }

    error_page 500 502 503 504 /50x.html;

    location = /50x.html {
        root /usr/share/nginx/html;
    }

    location /socket.io/ {
        proxy_pass http://backend;
            
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "Upgrade";
        proxy_set_header Host $host;
    }
}

与套接字IO相关的任何请求将被路由到后端中的/socket.io/前缀，与API交互的请求将路由到/api/v1/。

这是Fe中的Env文件：

VITE_API_URL=/api/v1/
VITE_SOCKET_URL=/socket.io/

我使用Docker容器来部署整个应用程序，包括FE容器，是容器，Nginx容器。