我需要做什么才能在 nginx 和 puma 上连接 ActionCable?

What do I need to do to hook up ActionCable on nginx and puma?

我在将 ActionCable 连接到我的产品环境时遇到了问题,相关问题也没有有效的解决方案。我在 Ubuntu 20.04 上使用 Rails 6.1.3.2 的 nginx+puma 设置。我已经确认 redis-server 在端口 6379 上是 运行,并且 Rails 在生产时是 运行。

这是我在日志中得到的内容:

I, [2021-05-25T22:47:25.335711 #72559]  INFO -- : [5d1a85f7-0102-4d25-bd4e-d81355b846ee] Started GET "/cable" for 74.111.15.223 at 2021-05-25 22:47:25 +0000
I, [2021-05-25T22:47:25.336283 #72559]  INFO -- : [5d1a85f7-0102-4d25-bd4e-d81355b846ee] Started GET "/cable/"[non-WebSocket] for 74.111.15.223 at 2021-05-25 22:47:25 +0000
E, [2021-05-25T22:47:25.336344 #72559] ERROR -- : [5d1a85f7-0102-4d25-bd4e-d81355b846ee] Failed to upgrade to WebSocket (REQUEST_METHOD: GET, HTTP_CONNECTION: close, HTTP_UPGRADE: )
I, [2021-05-25T22:47:25.336377 #72559]  INFO -- : [5d1a85f7-0102-4d25-bd4e-d81355b846ee] Finished "/cable/"[non-WebSocket] for 74.111.15.223 at 2021-05-25 22:47:25 +0000

这种情况每隔几秒钟就会发生一次。可以在浏览器控制台看到匹配的输出:

首先,我很确定我需要在我的 nginx 站点配置中添加一些部分,例如 /cable 部分,但我还没有找到正确的设置。这是我当前的配置:

server {
    root /home/rails/myapp/current/public;
    server_name myapp.com;
    index index.htm index.html;

        location ~ /.well-known {
                allow all;
        }

        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;
    }

    # needed to allow serving of assets and other public files
    location ~ ^/(assets|packs|graphs)/ {
        gzip_static on;
        expires 1y;
        add_header Cache-Control public;
        add_header Last-Modified "";
        add_header ETag "";
    }

    listen 443 ssl; # managed by Certbot
    ssl_certificate /etc/letsencrypt/live/myapp.com/fullchain.pem; # managed by Certbot
    ssl_certificate_key /etc/letsencrypt/live/myapp.com/privkey.pem; # managed by Certbot
    include /etc/letsencrypt/options-ssl-nginx.conf; # managed by Certbot
    ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem; # managed by Certbot
}

server {
    if ($host = myapp.com) {
        return 301 https://$host$request_uri;
    } # managed by Certbot


    listen   80;
    server_name myapp.com;
    return 404; # managed by Certbot
}

这是我的 config/cable.yml:

development:
  adapter: async

test:
  adapter: test

production:
  adapter: redis
  url: <%= ENV.fetch("REDIS_URL") { "redis://localhost:6379/1" } %>
  channel_prefix: myapp_production

config/environments/production.rb 中,我将这些行注释掉了:

  # Mount Action Cable outside main process or domain.
  # config.action_cable.mount_path = nil
  # config.action_cable.url = 'wss://example.com/cable'
  # config.action_cable.allowed_request_origins = [ 'http://example.com', /http:\/\/example.*/ ]

我没有在我的路线或任何其他地方手动安装 ActionCable。这是您可以获得的设置标准。我认为答案集中在正确的 nginx 配置中,但我不知道它应该是什么。不过,也许还需要 Rails 配置设置。我不记得在与 passenger 一起部署时需要更改任何内容,但也许 puma 是另一回事。

更新

我还注意到其他问题 中提出的许多解决方案似乎都引用了 tmp/sockets/ 中的 .sock 文件。不过,我的 sockets/ 目录是空的。 Web 服务器的 运行 除了 ActionCable 还不错。

更新#2

我还注意到将 config.action_cable.url 更改为 ws://myapp.com 而不是 wss://myapp.com 甚至在重新启动 Rails 后也没有效果。浏览器控制台错误仍然说它正在尝试连接到 wss://myapp.com。可能是由于我设置为强制将 HTTP 重定向到 HTTPS 的方式。我想知道这是否与它有关?

我成功了。以下是我需要的设置:

nginx 配置

我的问题中配置的 server 部分必须修改为包括以下两个部分 //cable 位置:

        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;
        }

        location /cable {
                proxy_pass http://localhost:3000;
                proxy_http_version 1.1;
                proxy_set_header Upgrade "websocket";
                proxy_set_header Connection "Upgrade";
                proxy_set_header X-Real-IP $remote_addr;
                proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        }

config/environments/production.rb

  # Change myapp.com to your app's location
  config.action_cable.allowed_request_origins = [ 'https://myapp.com' ]
  config.hosts << "myapp.com"
  config.hosts << "localhost"

非常感谢 Lam Phan 在评论中帮助我。