ruby-on-rails - ActionCable - 无法升级到 WebSocket

Question

我在连接网络套接字时遇到问题。有错误:

Successfully upgraded to WebSocket (REQUEST_METHOD: GET, HTTP_CONNECTION: Upgrade, HTTP_UPGRADE: websocket)
  User Load (0.2ms)  SELECT  "users".* FROM "users" WHERE "users"."id" IS NULL LIMIT ?  [["LIMIT", 1]]
An unauthorized connection attempt was rejected
Failed to upgrade to WebSocket (REQUEST_METHOD: GET, HTTP_CONNECTION: Upgrade, HTTP_UPGRADE: websocket)
Finished "/cable/" [WebSocket] for 127.0.0.1 at 2016-09-11 18:57:49 +0200
Finished "/cable/" [WebSocket] for 127.0.0.1 at 2016-09-11 18:57:49 +0200

连接.rb

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

    def connect
      self.current_user = find_verified_user
      logger.add_tags 'ActionCable', "User #{current_user.id}"
    end

    protected

    def find_verified_user
      if verified_user = User.find_by(id: cookies.signed[:user_id])
        verified_user
      else
        reject_unauthorized_connection
      end
    end
  end
end

我找到了一些应该使用 config.allowed_request_origins 的解决方案，但它并不能解决我的问题。我通过添加此方法尝试使用 session_helper:

def set_cookie(user)
  the_username = user.username.to_s
  cookies.permanent.signed[:username] = the_username
end

没有什么可以解决我的问题。

更新:我看到问题是 cookies.signed[:user_id] 为零。您有什么建议吗？这可能是什么原因？我使用标准 URL 和端口进行测试(localhost:3000)。

Answer 1

我通过使用 env['warden'].user 解决了我的问题。以下是更新的方法。

   def find_verified_user
      (current_user = env['warden'].user) ? current_user : reject_unauthorized_connection
   end