问题描述
我无法将 ActionCable 连接到我的生产环境中,并且相关问题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
正在端口 6379
上运行,并且 Rails 正在作为生产运行。
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
这种情况每隔几秒就会发生一次。您可以在浏览器控制台中看到匹配的输出:
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,但我还没有想出正确的设置。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
在 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东西中手动安装 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。我不记得在与乘客一起部署时必须改变任何东西,但也许 puma 是一个不同的故事。
更新
我还注意到其他问题 like this one 中的许多建议解决方案似乎引用了 .sock
中的 tmp/sockets/
文件。不过,我的 sockets/
目录是空的。除了 ActionCable 之外,Web 服务器运行良好。
更新 #2
我还注意到,即使在重新启动 Rails 后,将 config.action_cable.url
更改为类似 ws://myapp.com
而不是 wss://myapp.com
也没有任何效果。浏览器控制台错误仍然说它正在尝试连接到 wss://myapp.com
。可能是由于我如何设置强制将 HTTP 重定向到 HTTPS。不知道跟这个有关系吗?
解决方法
我成功了。以下是我需要的设置:
nginx 配置
必须修改我问题中配置的 server
部分,以包含 /
和 /cable
位置的以下两个部分:
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。