nginx - 当proxy_pass通过2个nginx时Websocket 404

Question

我试图让 websockets（socket.io）通过 2 个 proxy_pass 和 2 个不同的服务器（一个是服务器负载平衡器，另一个是实际服务器）工作。当 socket.io 尝试时，我得到 400

在这种情况下，我有两台服务器，一台 domainName ：

domainName : dev-socket.domain.com -> cname 到 lb.domain.com

服务器 1：lb.domain.com - 处理所有认证 - 处理我们所有的 {subdomain}.domain.com 请求，将它们代理传递给正确的服务器 - 一切正常，除了 websockets

服务器 2：dev.domain.com - 托管处理所有 websocket 的实际 api - nginx proxyPass 到 rightfull :port 应用程序

什么应该起作用，而不是：

dev-socket.domain.com (domainName) -> lb.domain.com (Server1, ssl) -> dev.domain.com (server2) -> nodeJsApp

这得到了400。

工作原理：如果我绕过 lb.domain.com 并直接执行此操作，则此方法有效： dev-socket.domain.com (domainName) -> dev.domain.com (server2, ssl) -> nodeJsApp

服务器 1：lb.domain.com：

map $http_connection $upgrade_requested {
    default upgrade;
    ''      close;
}


server {
    listen 80;
    listen 443 ssl http2;
    server_name dev-socket.domain.com;

    access_log /var/log/nginx/dev-socket.domain.com-access.log;
    error_log /var/log/nginx/dev-socket.domain.com-error.log error;

    client_max_body_size 256M;
    ssl_certificate /etc/letsencrypt/live/dev- 
    socket.domain.com/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/dev- 
    socket.domain.com/privkey.pem;
    includeSubDomains; preload";

    location /socket/live {
        proxy_read_timeout 120;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "Upgrade";
    proxy_set_header Host $http_host;

    proxy_set_header X-Real-IP $remote_addr;    
    proxy_pass http://91.121.117.17/socket/live;
    }


    location / {
        proxy_pass http://server_dev;
        proxy_set_header X-Real-IP  $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto https;
        proxy_set_header X-Forwarded-Port 443;

    proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "Upgrade";
        proxy_set_header Host $host;
    }


    location ~ ^/.well-known/acme-challenge/ {
        allow all;
        default_type "text/plain";
        root /usr/share/nginx/html/;
    }
}

服务器 2：dev.domain.com

map $http_connection $upgrade_requested { 
    default upgrade;
    ''      close;
}

server {
    listen *:443;
    server_name dev-socket.domain.com;

        #ssl_certificate /etc/letsencrypt/live/dev-socket.domain.com/fullchain.pem;
        #ssl_certificate_key /etc/letsencrypt/live/dev-socket.domain.com/privkey.pem;
        #ssl on;

        client_max_body_size 5M;

    access_log /var/log/nginx/dev-socket.domain.com;
    error_log /var/log/nginx/dev-socket.error;

    location /socket/live {
        proxy_pass http://localhost:3000;
        proxy_read_timeout 120;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

        proxy_http_version 1.1;
                proxy_set_header Upgrade $http_upgrade;
                proxy_set_header Connection "upgrade";
        proxy_set_header Host $host;
    }


    location / {
        proxy_pass http://localhost:3000;

        proxy_set_header    Host $host;
        proxy_set_header    X-Real-IP $remote_addr;
        proxy_set_header    X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header    X-Forwarded-Proto $scheme;
    }
}

server {
    listen *:80;
    server_name dev-socket.domain.com;

        if ($http_x_forwarded_proto != "https") {
                return 301 https://$server_name$request_uri;
        }

    access_log /var/log/nginx/dev-socket.domain.com;
    error_log /var/log/nginx/dev-socket.error;

        location / {
                proxy_pass http://localhost:3000;
        }
}

上面的配置在握手期间得到一个简单的 400 错误，而不是成功。

WebSocket connection to 'wss://dev-socket.domain.com/socket/live/?Auth=e02b7a2ab5c158d7f46c18d36f45955bf3769716&sessionId=5a38e191fc6bf8602001b237&EIO=3&transport=websocket&sid=Fu6M2b1I9sh9stLFAANX' failed: Error during WebSocket handshake: Unexpected response code: 400

我可以通过检查两个 nginx（server1、server2）的活动日志来确认请求正在到达 server2。所以我目前的猜测是关于格式错误的标题..

如前所述，如果我绕过 lb.domain.com，并在 dev.domain.com 目录上激活 ssl，它就可以工作

标签： nginxwebsocketsocket.ioproxypass