Question

Rails 5.2.1

路线：

    Rails.application.routes.draw do

      mount ActionCable.server => '/cable'
.
.
.

我在app / channels / application_cable / connection.rb中有以下代码

module ApplicationCable
  class Connection < ActionCable::Connection::Base

    identified_by :current_user

        def connect
          self.current_user = find_verified_user
        end

        private

        def find_verified_user
          if verified_user = env['warden'].user
            verified_user
          else
            logger.add_tags 'ActionCable', "The user is not found. Connection rejected."  
            reject_unauthorized_connection
          end
        end
      end
    end

我注意到，当我没有登录用户时，服务器日志如下所示：

Started GET "/cable" for 127.0.0.1 at 2018-12-21 14:37:05 +0700
Started GET "/cable/" [WebSocket] for 127.0.0.1 at 2018-12-21 14:37:05 +0700
Successfully upgraded to WebSocket (REQUEST_METHOD: GET, HTTP_CONNECTION: Upgrade, HTTP_UPGRADE: websocket)
[ActionCable] [The user is not found. Connection rejected.] An unauthorized connection attempt was rejected
[ActionCable] [The user is not found. Connection rejected.] Failed to upgrade to WebSocket (REQUEST_METHOD: GET, HTTP_CONNECTION: Upgrade, HTTP_UPGRADE: websocket)
[ActionCable] [The user is not found. Connection rejected.] Finished "/cable/" [WebSocket] for 127.0.0.1 at 2018-12-21 14:37:05 +0700
[ActionCable] [The user is not found. Connection rejected.] Finished "/cable/" [WebSocket] for 127.0.0.1 at 2018-12-21 14:37:05 +0700
Started GET "/cable" for 127.0.0.1 at 2018-12-21 14:37:27 +0700
Started GET "/cable/" [WebSocket] for 127.0.0.1 at 2018-12-21 14:37:27 +0700
Successfully upgraded to WebSocket (REQUEST_METHOD: GET, HTTP_CONNECTION: Upgrade, HTTP_UPGRADE: websocket)
[ActionCable] [The user is not found. Connection rejected.] An unauthorized connection attempt was rejected
[ActionCable] [The user is not found. Connection rejected.] Failed to upgrade to WebSocket (REQUEST_METHOD: GET, HTTP_CONNECTION: Upgrade, HTTP_UPGRADE: websocket)
[ActionCable] [The user is not found. Connection rejected.] Finished "/cable/" [WebSocket] for 127.0.0.1 at 2018-12-21 14:37:27 +0700
[ActionCable] [The user is not found. Connection rejected.] Finished "/cable/" [WebSocket] for 127.0.0.1 at 2018-12-21 14:37:27 +0700
Started GET "/cable" for 127.0.0.1 at 2018-12-21 14:37:49 +0700
Started GET "/cable/" [WebSocket] for 127.0.0.1 at 2018-12-21 14:37:49 +0700
Successfully upgraded to WebSocket (REQUEST_METHOD: GET, HTTP_CONNECTION: Upgrade, HTTP_UPGRADE: websocket)
[ActionCable] [The user is not found. Connection rejected.] An unauthorized connection attempt was rejected
[ActionCable] [The user is not found. Connection rejected.] Failed to upgrade to WebSocket (REQUEST_METHOD: GET, HTTP_CONNECTION: Upgrade, HTTP_UPGRADE: websocket)
[ActionCable] [The user is not found. Connection rejected.] Finished "/cable/" [WebSocket] for 127.0.0.1 at 2018-12-21 14:37:49 +0700
[ActionCable] [The user is not found. Connection rejected.] Finished "/cable/" [WebSocket] for 127.0.0.1 at 2018-12-21 14:37:49 +0700
Started GET "/cable" for 127.0.0.1 at 2018-12-21 14:38:11 +0700

不断地尝试建立连接，直到找到已登录的用户，这是正确的行为还是ActionCable的正常行为？

Answer 1

AFAIK，升级不是因为未登录用户。我相信这是WS（S）连接尝试通过HTTP（S）进行握手然后进行自我升级的功能。

这是您的Web服务器层（Puma，Apache等）的行为，而不是您的应用程序层（Rails，Sinatra等）的行为。

为什么在找不到登录用户的情况下，ActionCable会不断尝试升级连接

1 个答案: