イベント ID 1309 は SC ホストで 29 時間ごとに発生します

• SC サーバホスト上の Windows アプリケーションイベントログでは、 29 時間ごとにイベントが報告されます。

Log Name:  Application
Source:  ASP.NET 4.0.30319.0
Event ID:  1309
Task Category:  Web Event
Level:  Warning
Keywords:  Classic
User:  N/A
Computer:  <HOST_NAME>
Description: 

Event code: 3005 
Event message: An unhandled exception has occurred. 
Event time: 3/14/2022 7:38:56 AM 
Event time (UTC): 3/14/2022 7:38:56 AM 
Event ID: <EVENT_ID>
Event sequence: 6 
Event occurrence: 1 
Event detail code: 0 
Application information: 
  Application domain: /LM/W3SVC/2/ROOT-1-xxxxx
  Trust level: Full 
  Application Virtual Path: / 
  Application Path: C:\Program Files\NetApp\SnapCenter WebApp\ 
  Machine name: <HOST_NAME> 
Process information: 
  Process ID: 12592 
  Process name: w3wp.exe 
  Account name: IIS APPPOOL\SnapCenter 
Exception information: 
  Exception type: HttpException 
  Exception message: The remote host closed the connection. The error code is 0x80070057.
  at System.Web.Hosting.IIS7WorkerRequest.RaiseCommunicationError(Int32 result, Boolean throwOnDisconnect)
  at System.Web.WebSocketPipeline.DoFlush()
--- End of stack trace from previous location where exception was thrown ---
  at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
  at System.Web.WebSocketPipeline.<ProcessRequestImplAsync>d__8.MoveNext()

Request information: 
  Request URL:  
  Request path:  
  User host address:  
  User:  
  Is authenticated: False 
  Authentication Type:  
  Thread account name: IIS APPPOOL\SnapCenter 
Thread information: 
  Thread ID: 11 
  Thread account name: IIS APPPOOL\SnapCenter 
  Is impersonating: False 
  Stack trace:   at System.Web.Hosting.IIS7WorkerRequest.RaiseCommunicationError(Int32 result, Boolean throwOnDisconnect)
  at System.Web.WebSocketPipeline.DoFlush()
--- End of stack trace from previous location where exception was thrown ---
  at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
  at System.Web.WebSocketPipeline.<ProcessRequestImplAsync>d__8.MoveNext()
Custom event details: 

• それ以外のエラーは発生しません。