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IIS operation cancelled by client is logging response code 0 instead of 500 after request header logging



The Next CEO of Stack OverflowDoes IIS log request header information? If yes, where?IIS aborts request thread with status 995Apache logging to different files by response codeTrailing dots in url result in empty 404 page on IISIIS 500.19 error on 0.01% of requestsHTTP Requests to directory with Client Certificate Authentication result in 401.2.5 response code?How to debug error 503 without a trace?IIS Client certificate error loggingIIS Setting Response header makes loading site very slowIIS 8.5 throwing 400 Bad request in Production when calling REST WS using Post method










0















We have IIS 8.5 hosted REST based Web API services. The default logging is W3C format. Client can cancel the ongoing request and these are logged with the status code of 500.



When request header logging is turned on to capture a request header in IIS log, a custom header used in the application: Logging -> Log File Format -> Select Fields -> Custom Fields -> Add Field
Field Name: XView
Source Type: Request Header
Source: XView (custom request header)



After this change, the IIS log response code logged is 0 instead of 500 when client cancels the operation.



Fields: date time s-ip cs-method cs-uri-stem cs-uri-query s-port cs-username c-ip cs(User-Agent) cs(Referer) sc-status sc-substatus sc-win32-status sc-bytes cs-bytes time-taken
2019-03-28 08:30:24 10.91.1.183 GET /api/MyTestUri filter=SampleNumber:-2&itemsPerPage=25&pageNumber=1 65435 UserId 10.91.2.14 - - 500 0 64 0 943 6968



Fields: date time s-ip cs-method cs-uri-stem cs-uri-query s-port cs-username c-ip cs(User-Agent) cs(Referer) sc-status sc-substatus sc-win32-status sc-bytes cs-bytes time-taken XView
2019-03-28 09:33:26 10.91.1.183 GET /api/MyTestUri filter=SampleNumber:-2&itemsPerPage=25&pageNumber=1 65435 UserId 10.91.2.14 - - 0 0 64 0 943 6874 -



The event log continues to have an Exception type: OperationCanceledException as earlier and Failed Request Trace in IIS shows the response code as 500 (final status).



Other threads have discussed when status 0 can occur, e.g. https://stackoverflow.com/q/3825581/987191 but not this specific scenario.



We need custom headers to be logged to add more context to the IIS log, but would like it to continue to log 500 status, so that we can isolate other failures such as failures during heavy load log 0 status in response. This change in behavior due to request header logging is adding noise in the logs. I could not find enough documentation on why response code changes, but if anyone has any information, that will be appreciated.










share|improve this question


























    0















    We have IIS 8.5 hosted REST based Web API services. The default logging is W3C format. Client can cancel the ongoing request and these are logged with the status code of 500.



    When request header logging is turned on to capture a request header in IIS log, a custom header used in the application: Logging -> Log File Format -> Select Fields -> Custom Fields -> Add Field
    Field Name: XView
    Source Type: Request Header
    Source: XView (custom request header)



    After this change, the IIS log response code logged is 0 instead of 500 when client cancels the operation.



    Fields: date time s-ip cs-method cs-uri-stem cs-uri-query s-port cs-username c-ip cs(User-Agent) cs(Referer) sc-status sc-substatus sc-win32-status sc-bytes cs-bytes time-taken
    2019-03-28 08:30:24 10.91.1.183 GET /api/MyTestUri filter=SampleNumber:-2&itemsPerPage=25&pageNumber=1 65435 UserId 10.91.2.14 - - 500 0 64 0 943 6968



    Fields: date time s-ip cs-method cs-uri-stem cs-uri-query s-port cs-username c-ip cs(User-Agent) cs(Referer) sc-status sc-substatus sc-win32-status sc-bytes cs-bytes time-taken XView
    2019-03-28 09:33:26 10.91.1.183 GET /api/MyTestUri filter=SampleNumber:-2&itemsPerPage=25&pageNumber=1 65435 UserId 10.91.2.14 - - 0 0 64 0 943 6874 -



    The event log continues to have an Exception type: OperationCanceledException as earlier and Failed Request Trace in IIS shows the response code as 500 (final status).



    Other threads have discussed when status 0 can occur, e.g. https://stackoverflow.com/q/3825581/987191 but not this specific scenario.



    We need custom headers to be logged to add more context to the IIS log, but would like it to continue to log 500 status, so that we can isolate other failures such as failures during heavy load log 0 status in response. This change in behavior due to request header logging is adding noise in the logs. I could not find enough documentation on why response code changes, but if anyone has any information, that will be appreciated.










    share|improve this question
























      0












      0








      0








      We have IIS 8.5 hosted REST based Web API services. The default logging is W3C format. Client can cancel the ongoing request and these are logged with the status code of 500.



      When request header logging is turned on to capture a request header in IIS log, a custom header used in the application: Logging -> Log File Format -> Select Fields -> Custom Fields -> Add Field
      Field Name: XView
      Source Type: Request Header
      Source: XView (custom request header)



      After this change, the IIS log response code logged is 0 instead of 500 when client cancels the operation.



      Fields: date time s-ip cs-method cs-uri-stem cs-uri-query s-port cs-username c-ip cs(User-Agent) cs(Referer) sc-status sc-substatus sc-win32-status sc-bytes cs-bytes time-taken
      2019-03-28 08:30:24 10.91.1.183 GET /api/MyTestUri filter=SampleNumber:-2&itemsPerPage=25&pageNumber=1 65435 UserId 10.91.2.14 - - 500 0 64 0 943 6968



      Fields: date time s-ip cs-method cs-uri-stem cs-uri-query s-port cs-username c-ip cs(User-Agent) cs(Referer) sc-status sc-substatus sc-win32-status sc-bytes cs-bytes time-taken XView
      2019-03-28 09:33:26 10.91.1.183 GET /api/MyTestUri filter=SampleNumber:-2&itemsPerPage=25&pageNumber=1 65435 UserId 10.91.2.14 - - 0 0 64 0 943 6874 -



      The event log continues to have an Exception type: OperationCanceledException as earlier and Failed Request Trace in IIS shows the response code as 500 (final status).



      Other threads have discussed when status 0 can occur, e.g. https://stackoverflow.com/q/3825581/987191 but not this specific scenario.



      We need custom headers to be logged to add more context to the IIS log, but would like it to continue to log 500 status, so that we can isolate other failures such as failures during heavy load log 0 status in response. This change in behavior due to request header logging is adding noise in the logs. I could not find enough documentation on why response code changes, but if anyone has any information, that will be appreciated.










      share|improve this question














      We have IIS 8.5 hosted REST based Web API services. The default logging is W3C format. Client can cancel the ongoing request and these are logged with the status code of 500.



      When request header logging is turned on to capture a request header in IIS log, a custom header used in the application: Logging -> Log File Format -> Select Fields -> Custom Fields -> Add Field
      Field Name: XView
      Source Type: Request Header
      Source: XView (custom request header)



      After this change, the IIS log response code logged is 0 instead of 500 when client cancels the operation.



      Fields: date time s-ip cs-method cs-uri-stem cs-uri-query s-port cs-username c-ip cs(User-Agent) cs(Referer) sc-status sc-substatus sc-win32-status sc-bytes cs-bytes time-taken
      2019-03-28 08:30:24 10.91.1.183 GET /api/MyTestUri filter=SampleNumber:-2&itemsPerPage=25&pageNumber=1 65435 UserId 10.91.2.14 - - 500 0 64 0 943 6968



      Fields: date time s-ip cs-method cs-uri-stem cs-uri-query s-port cs-username c-ip cs(User-Agent) cs(Referer) sc-status sc-substatus sc-win32-status sc-bytes cs-bytes time-taken XView
      2019-03-28 09:33:26 10.91.1.183 GET /api/MyTestUri filter=SampleNumber:-2&itemsPerPage=25&pageNumber=1 65435 UserId 10.91.2.14 - - 0 0 64 0 943 6874 -



      The event log continues to have an Exception type: OperationCanceledException as earlier and Failed Request Trace in IIS shows the response code as 500 (final status).



      Other threads have discussed when status 0 can occur, e.g. https://stackoverflow.com/q/3825581/987191 but not this specific scenario.



      We need custom headers to be logged to add more context to the IIS log, but would like it to continue to log 500 status, so that we can isolate other failures such as failures during heavy load log 0 status in response. This change in behavior due to request header logging is adding noise in the logs. I could not find enough documentation on why response code changes, but if anyone has any information, that will be appreciated.







      logging asp.net iis-8.5






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