完成“/cable/”[WebSocket]:为什么我的 rails 控制台在尝试使 ActionCable 工作时进入无限循环？

问题描述

我正在尝试将动作电缆添加到我在前端使用 angular 8 的 rails 应用程序。 在路由文件中安装路径并设置配置文件后，我尝试调用 ws://localhost:3000/cable：

routes.rb

 mount ActionCable.server => '/cable'

config/environments/development.rb

  config.action_cable.url = "ws://localhost:3000/cable"
  config.action_cable.allowed_request_origins = [/http:\/\/*/,/https:\/\/*/,/file:\/\/*/,'file://']

控制台进入一个无限循环，它成功连接，然后一旦开始流式传输，它就会失去连接。这是进入循环的预期行为吗？怎么了？

控制台输出

 Started GET "/cable" for ::1 at 2020-12-24 21:58:28 +0800
    Started GET "/cable/" [WebSocket] for ::1 at 2020-12-24 21:58:29 +0800
    Successfully upgraded to WebSocket (REQUEST_METHOD: GET,HTTP_CONNECTION: Upgrade,HTTP_UPGRADE: websocket)
    Registered connection (#<User:0x00000000075d9678>)
    reached here
    NotificationChannel is transmitting the subscription confirmation
    NotificationChannel is streaming from notifications_channel
    Finished "/cable/" [WebSocket] for ::1 at 2020-12-24 21:58:38 +0800
    NotificationChannel stopped streaming from notifications_channel
    Started GET "/cable" for ::1 at 2020-12-24 21:58:39 +0800
    Started GET "/cable/" [WebSocket] for ::1 at 2020-12-24 21:58:40 +0800
    Successfully upgraded to WebSocket (REQUEST_METHOD: GET,HTTP_UPGRADE: websocket)
    Registered connection (#<User:0x000000000772db78>)
    reached here
    NotificationChannel is transmitting the subscription confirmation
    NotificationChannel is streaming from notifications_channel
    Finished "/cable/" [WebSocket] for ::1 at 2020-12-24 21:58:49 +0800
    NotificationChannel stopped streaming from notifications_channel
    Started GET "/cable" for ::1 at 2020-12-24 21:58:50 +0800
    Started GET "/cable/" [WebSocket] for ::1 at 2020-12-24 21:58:51 +0800
    Successfully upgraded to WebSocket (REQUEST_METHOD: GET,HTTP_UPGRADE: websocket)
    Registered connection (#<User:0x0000000007843008>)

我的 NotificationsChannel 文件。

 class NotificationChannel < ApplicationCable::Channel
  def subscribed
    puts 'reached here'
    stream_from 'notifications_channel' 
  end

  def received(data)
  end

  def unsubscribed
  end
end

解决方法

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