ActionCable - 无法在生产中升级到WebSocket

Question

ActionCable在生产中不起作用.适用于开发,但不适用于生产.

在Ubuntu 14.04上使用Puma运行Nginx.我已经检查过redis-server已启动并正在运行.

Rails -v 5.0.0.1

production.log:

INFO -- : Started GET "/cable/"[non-WebSocket] for 178.213.184.193 at 2016-11-25 14:55:39 +0100
ERROR -- : Failed to upgrade to WebSocket (REQUEST_METHOD: GET, HTTP_CONNECTION: close, HTTP_UPGRADE: )
INFO -- : Finished "/cable/"[non-WebSocket] for 178.213.184.193 at 2016-11-25 14:55:39 +0100

客户要求:

GET ws://mityakoval.com/cable HTTP/1.1
Host: mityakoval.com
Connection: Upgrade
Pragma: no-cache
Cache-Control: no-cache
Upgrade: websocket
Origin: http://mityakoval.com
Sec-WebSocket-Version: 13
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.98 Safari/537.36
Accept-Encoding: gzip, deflate, sdch
Accept-Language: ru-RU,ru;q=0.8,en-US;q=0.6,en;q=0.4,uk;q=0.2,nb;q=0.2
Cookie: _vaktdagboka_session=******
Sec-WebSocket-Key: *******
Sec-WebSocket-Extensions: permessage-deflate; client_max_window_bits
Sec-WebSocket-Protocol: actioncable-v1-json, actioncable-unsupported

响应:

HTTP/1.1 404 Not Found
Server: nginx/1.4.6 (Ubuntu)
Date: Fri, 25 Nov 2016 13:52:21 GMT
Content-Type: text/plain
Transfer-Encoding: chunked
Connection: keep-alive
Cache-Control: no-cache
X-Request-Id: d6374238-69ef-476e-8fc5-e2f8bbb663de
X-Runtime: 0.002500

nginx.conf:

upstream puma {
  server unix:///home/mityakoval/apps/vaktdagboka/shared/tmp/sockets/vaktdagboka-puma.sock;
}

server {
  listen 80 default_server deferred;
  # server_name example.com;

  root /home/mityakoval/apps/vaktdagboka/current/public;
  access_log /home/mityakoval/apps/vaktdagboka/current/log/nginx.access.log;
  error_log /home/mityakoval/apps/vaktdagboka/current/log/nginx.error.log info;

  location ^~ /assets/ {
    gzip_static on;
    expires max;
    add_header Cache-Control public;
  }

  try_files $uri/index.html $uri @puma;
  location @puma {
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header Host $http_host;
    proxy_redirect off;

    proxy_pass http://puma;
  }

  location /cable {
    proxy_pass http://puma;
    proxy_http_version 1.1;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header Host $http_host;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection "Upgrade";
  }

  error_page 500 502 503 504 /500.html;
  client_max_body_size 10M;
  keepalive_timeout 10;
}

cable.yml:

redis: &redis
  adapter: redis
  url: redis://127.0.0.1:6379

production: *redis

development:
  adapter: async

test:
  adapter: async

在production.rb:

config.action_cable.allowed_request_origins = ["http://mityakoval.com"]

在routes.rb:

mount ActionCable.server, at: '/cable'

更新:

别忘了重新启动nginx :)这对我来说是个问题.

Answer 1

您应该将proxy_pass属性值更改http://puma为http://puma/cable.

因此,正确的location部分/cable将是:

location /cable {
  proxy_pass http://puma/cable;
  proxy_http_version 1.1;
  proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
  proxy_set_header Host $http_host;
  proxy_set_header Upgrade $http_upgrade;
  proxy_set_header Connection "Upgrade";
}

Answer 2

虽然其他帖子已经正确发布了解决方案，但我想我会发布更多关于如何确定问题所在/为其他 nginx 新手修复问题的信息。

你会知道你的nginx的配置需要proxy_set_header Upgrade在你装行为电缆如果轨道误差包含路径HTTP_UPGRADE:。（意味着没有传递给 HTTP_UPGRADE）。解决问题后，我的日志显示HTTP_UPGRADE: websocket

• Gotchya 1：如操作所述，请确保在进行更改后重新启动 nginx（我这样做是错误的）。

• Gotchya 2：还要在 nginx 配置中查找包含语句，因为您的配置可能会拆分到多个文件中。该location /cable {部分应该server {在我的情况下丢失的内部，因为它与我暂时没有注意到的包含语句位于不同的配置文件中。

• 类似的错误但不同的问题：您的 rails 日志将在日志中包含一个额外的错误，就在 OP 提到的那个说不允许原点之前，即当您的 rails 配置需要更新时，另一个答案提到更新 config.action_cable。 allowed_request_origins。

日志记录可能会随着 Rails 发生变化，但希望这有助于澄清问题所在以及我作为对 nginx 一无所知的人遇到的一些问题。

Answer 3

需要 NGINX 配置更改的分辨率才能接受此操作电缆请求。

location / {
  proxy_set_header Upgrade $http_upgrade;
  proxy_set_header Connection "upgrade";
}

将以上行添加到 nginx 站点配置中的位置块中，然后重新启动 nginx。

Answer 4

您的 Cable.yml 文件应如下所示：

production:
    adapter: redis
    url: <%=ENV['REDIS_URL']%>

然后你应该在环境中设置这个密钥，应该看起来像这样：

REDIS_URL: 'redis://redistogo:keyblahblahblhblah'

另外，你应该在 production.rb 中包含以下内容：

config.web_socket_server_url = "wss://YOUR_URL.com/cable"