Nodejs不能与nginx反向代理一起工作的socket.io

Question

我有一个带有Express和Socket.io(Ubuntu18.04)的Nodejs服务器应用程序。在nGinx(1.14)反向代理进入场景之前，它总是工作得很好。nginx服务器运行在Node.js应用程序的不同机器上，每个应用程序都在同一网络中的自己的虚拟机上。

2.1.1版本上的服务器和客户端。

location /company1-srv/ {
     proxy_http_version 1.1;
     proxy_set_header Upgrade $http_upgrade;
     proxy_set_header Connection "Upgrade";
     proxy_set_header Host $host;
     proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
     proxy_set_header X-Real-IP $remote_addr;
     proxy_set_header X-Forwarded-Proto $scheme;
     proxy_set_header X-NginX-Proxy true;
     proxy_redirect off;
     proxy_pass http://172.16.0.25:51001/;
}

// companySrv and URL is actually returned by another service (following code is for illustrative purposes):
let companyUrl = 'https://api.myserver.com/company1-srv';
let companySrv = '/company1-srv'; 

socket(companyUrl, {
      path: companySrv + '/socket.io/'
});

我还尝试删除path选项，并为socket.io东西配置了一个特定的/位置（出于测试目的）：

location /socket.io/ {
   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;
   proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
   proxy_set_header X-Real-IP $remote_addr;
   proxy_set_header X-Forwarded-Proto $scheme;
   proxy_set_header X-NginX-Proxy true;
   proxy_redirect off;
   proxy_pass http://172.16.0.25:51001/socket.io/;
}

什么都没起作用。

它连接，但不发射任何东西。过了一段时间（大约一分钟），它变得不可用，引发“Disconnect”（原因：transport close）客户端事件。

const io = require('socket.io')(https || http, {
   transports: ['polling', 'websocket'],
   allowUpgrades: true, 
   pingInterval: 60000*60*24, 
   pingTimeout: 60000*60*24
});

Answer 1

我们还将socket.io与来自ngnix的反向代理一起使用。我可以分享一点我们的设置，也许这有助于排除一切。

user www-data;
worker_processes auto;
pid /run/nginx.pid;
include /etc/nginx/modules-enabled/*.conf;

events {
        worker_connections 768;
}

stream {
        log_format      basic   '$time_iso8601 $remote_addr '
                                '$protocol $status $bytes_sent $bytes_received '
                                '$session_time $upstream_addr '
                                '"$upstream_bytes_sent" "$upstream_bytes_received" "$upstream_connect_time"';
        
        access_log /var/log/nginx/stream.log basic;
}

http {

        sendfile on;
        tcp_nopush on;
        tcp_nodelay on;
        keepalive_timeout 65;
        types_hash_max_size 2048;

        include /etc/nginx/mime.types;
        default_type application/octet-stream;

        ssl_protocols TLSv1 TLSv1.1 TLSv1.2; # Dropping SSLv3, ref: POODLE
        ssl_prefer_server_ciphers on;

        access_log /var/log/nginx/access.log;
        error_log /var/log/nginx/error.log;

        gzip on;

        include /etc/nginx/conf.d/*.conf;
        include /etc/nginx/sites-enabled/*;

        ##
        # Server Blocks 
        ##


        # DOMAINEXAMPLE A
        server {
                server_name exampleA.domain.com;
                location / {
                        proxy_set_header        X-Forwarded-For $remote_addr;
                        proxy_set_header        Host $http_host;
                        proxy_pass              http://192.168.21.105:5050;
                 }
        }

        # DOMAINEXAMPLE B
        server {
                server_name exampleB.domain.com;
                location /api {
                        proxy_set_header        X-Forwarded-For $remote_addr;
                        proxy_set_header        Host $http_host;
                        proxy_pass              http://192.168.21.106:5050;
                }
        }

     
}

这里最有趣的部分可能是服务器块

        # DOMAINEXAMPLE A
        server {
                server_name exampleA.domain.com;
                location / {
                        proxy_set_header        X-Forwarded-For $remote_addr;
                        proxy_set_header        Host $http_host;
                        proxy_pass              http://192.168.21.105:5050;
                 }
        }

        # DOMAINEXAMPLE B
        server {
                server_name exampleB.domain.com;
                location /api {
                        proxy_set_header        X-Forwarded-For $remote_addr;
                        proxy_set_header        Host $http_host;
                        proxy_pass              http://192.168.21.106:5050;
                }
        }

对于/在http://192.168.21.105:5050的位置，我们有一个正在运行的NodeJS进程，包括socket.io的设置

const express = require('express');
const http    = require('http');
const app     = express();
const server  = http.createServer(app);
const io      = require('socket.io')(server);

const express  = require('express');
const http     = require('http');
const app      = express();
const server   = http.createServer(app);
const io       = require('socket.io')(server, {path: '/api/socket.io'});

const io= require('socket.io')(server, {path: '/api/socket.io'});
const nsp = io.of('/api/frontend');

然后在客户端，连接到它，就像

import io from 'socket.io-client'
const socket = io('https://exampleB.domain.com/api/frontend', {path: "/api/socket.io"});