为什么 ActionCable 在找不到登录用户时不断尝试升级连接

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

ActionCable 不断尝试建立连接直到找到登录用户是否正确且正常？

Answer 1

据我所知，升级不是因为用户未登录。我相信这是 WS(S) 连接尝试通过 HTTP(S) 进行握手然后升级自身的功能。

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 ActionCable 在找不到登录用户时不断尝试升级连接

Why does ActionCable continually try to upgrade a connection when it can't find a logged in user

ruby-on-rails-5

actioncable