Exception when closing

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Anders Persson

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Jan 8, 2019, 7:48:30 AM1/8/19
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I got this exception when ending the application. I am not sure how I triggered the problem.


Broken pipe: OPERATING_SYSTEM_SIGNAL_FAILURE raised (OPERATING_SYSTEM_SIGNAL_FAILURE)
******************************** Thread exception *****************************
In thread           Child thread           0x7F270EFFD700 (thread id)
*******************************************************************************
-------------------------------------------------------------------------------
Class / Object      Routine                Nature of exception           Effect
-------------------------------------------------------------------------------
SSL                 c_ssl_shutdown         Broken pipe:                 
<00007F2715DF6FE8>                         Operating system signal.      Fail
-------------------------------------------------------------------------------
SSL                 c_ssl_shutdown                                      
<00007F2715DF6FE8>                         Routine failure.              Fail
-------------------------------------------------------------------------------
SSL                 shutdown @1                                         
<00007F2715DF6FE8>                         Routine failure.              Fail
-------------------------------------------------------------------------------
HTTPD_STREAM_SECURE_SOCKET
                    shutdown @2            
<00007F2715DF6C78>  (From SSL_NETWORK_STREAM_SOCKET)
                                           Routine failure.              Fail
-------------------------------------------------------------------------------
HTTPD_STREAM_SECURE_SOCKET
                    close @3               
<00007F2715DF6C78>  (From SOCKET)          Routine failure.              Fail
-------------------------------------------------------------------------------
WGI_HTTPD_REQUEST_HANDLER
                    execute @26            
<00007F2715DF6BE8>  (From HTTPD_REQUEST_HANDLER_I)
                                           Routine failure.              Fail
-------------------------------------------------------------------------------
WGI_HTTPD_REQUEST_HANDLER
                    safe_execute @4        
<00007F2715DF6BE8>  (From HTTPD_REQUEST_HANDLER_I)
                                           Routine failure.              Fail
-------------------------------------------------------------------------------
APPLICATION_TODO    root's creation                                     
<00007F27160B0038>                         Routine failure.              Exit
-------------------------------------------------------------------------------




It is at "shutdown" below


close
-- Close socket for all context.
-- (from SOCKET)
require -- from IO_MEDIUM
medium_is_open: not is_closed
do
if is_open_read or is_open_write then
shutdown
end
if exists then
close_socket
end
end

Another question. Why does we do shutdown before clsoing sockets?


Jocelyn Fiat

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Jan 14, 2019, 10:54:46 AM1/14/19
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Hi Anders,

Is it easy to reproduce?

Regards
-- Jocelyn

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Anders Persson

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Jan 15, 2019, 4:42:11 AM1/15/19
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No, it is not easy to reproduce, I got it about 10 times but never understood 100% what I did. Then it disappeared and I can not reproduce it now.

If I remember correct it happened when I was at a page that had created a socket connection. Then I, in the browser, moved to another page, then I got it.

Anders

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Jocelyn Fiat

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Jan 21, 2019, 4:57:23 AM1/21/19
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Ok, did you experienced any issue in production ? (i.e not during development?)
I think EiffelWeb standalone implementation is protected against such crash (i.e a rescue should catch this, and just consider the socket closed, then continue to next request).

-- Jocelyn


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Anders Persson

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Jan 21, 2019, 5:42:00 AM1/21/19
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On Mon, 21 Jan 2019 at 10:57, Jocelyn Fiat <jf...@eiffel.com> wrote:
Ok, did you experienced any issue in production ? (i.e not during development?)

I have not seen this in production. It might have been temporary during development, e.g. melting many times etc.

In production I have noted that it one time the server was "looping", e.g. consuming 100% of a CPU and not responding, but I do not think that that is related. I will try to gather more information about the looping if it happens again. Any suggestion of how to track that kind of problems in a freezed version? I can of add prints, build it differently if you think that would help to pinpoint that kind of problems.
 
I think EiffelWeb standalone implementation is protected against such crash (i.e a rescue should catch this, and just consider the socket closed, then continue to next request).

Yes, I agree.
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