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From Yann Ylavic <ylavic....@gmail.com>
Subject Re: [users@httpd] 200 OK for a network error?
Date Tue, 15 Jul 2014 13:55:14 GMT
Hello,

I think this has been fixed in 2.4.8 with this changelog:

  *) core: Detect incomplete request and response bodies, log an error and
     forward it to the underlying filters. PR 55475 [Yann Ylavic]

A backport is proposed for next 2.2.x release and is waiting for approvals.
I will update the bugzilla
https://issues.apache.org/bugzilla/show_bug.cgi?id=55475 about this.

Please note that with this fix the HTTP status returned to the client
(and logued) will be 408 (Request Timeout).

On Tue, Jul 15, 2014 at 8:22 AM, Nozomi Anzai <anzai@sraoss.co.jp> wrote:
> Does anyone have some comments?
>
>> Hi,
>>
>> I have a question about HTTP status codes.
>>
>> - I use Apache 2.2.15 + mod_proxy_ajp + Tomcat 6.0.35.
>>   - Apache's Timeout is 90 sec, and Tomcat AJP connector's
>>     connectionTimeout is 10000 (10 sec).
>>   - Apache's keepAlive is off.
>>
>> - While uploading a large-sized file and waiting the resoponse, I switched
>>   off network of the client machine.
>>
>> - The Tomcat returned a status code which depended on the application (500
>>   internal server error, 200 OK and so on), but Apache always wrote 200 OK
>>   in its access log.
>>
>> I'm wondering if it is by design or not that Apache returns 200 OK in such
>> network error. I don't expect that Apache has to return Tomcat's status
>> codes, but expect a kind of 50x error.
>>
>> Any ideas?
>>
>>
>>
>> The log messages about this are as follows:
>>
>> ----------------------------------------------------------------------------
>> [12:00:26] A user starts file uploading.
>> ----------------------------------------------------------------------------
>>
>> ==> httpd-2.2.15/logs/error_log <==
>> [Tue Jul 01 12:00:26 2014] [debug] mod_proxy_ajp.c(45): proxy: AJP: canonicalising
URL //localhost:8009/upload/ultest
>> :
>> [Tue Jul 01 12:00:26 2014] [debug] mod_proxy_ajp.c(270): proxy: data to read (max
8186 at 4)
>> [Tue Jul 01 12:00:26 2014] [debug] mod_proxy_ajp.c(285): proxy: got 952 bytes of
data
>>
>> ----------------------------------------------------------------------------
>> [12:00:30] A user disconnects the client's network.
>> ----------------------------------------------------------------------------
>>
>> (There are no log messages about this.)
>>
>> ----------------------------------------------------------------------------
>> [12:00:50] Tomcat regognizes the timeout. (20 sec after disconnecting)
>> ----------------------------------------------------------------------------
>>
>> ==> tomcat-6.0.35/logs/catalina.out <==
>> org.apache.commons.fileupload.FileUploadBase$IOFileUploadException:Processing of
multipart/form-data request failed. Read timed out
>> :
>> Caused by: java.net.SocketTimeoutException: Read timed out
>> :
>>
>> ==> tomcat-6.0.35/logs/localhost.2014-07-01.log <==
>> Jul 01, 2014 12:00:50 PM org.apache.catalina.core.StandardWrapperValve invoke
>> SEVERE: Servlet.service() for servlet uploadtest threw exception
>> javax.servlet.ServletException: FOR DEBUG servlet
>> :
>>
>> ==> tomcat-6.0.35/logs/localhost_access_log.2014-07-01.txt <==
>> 133.137.177.172 - - [01/Jul/2014:12:00:50 +0900] "POST /upload/ultest HTTP/1.1" 500
1362 23396
>>
>> ----------------------------------------------------------------------------
>> [12:02:00] Apache recognizes the timeout. (90 sec after disconnecting)
>> ----------------------------------------------------------------------------
>>
>> ==> httpd-2.2.15/logs/error_log <==
>> [Tue Jul 01 12:02:00 2014] [debug] mod_proxy_ajp.c(379): (70007)The timeout specified
has expired: ap_get_brigade failed
>> [Tue Jul 01 12:02:00 2014] [debug] mod_proxy_ajp.c(545): proxy: Processing of request
failed backend: 0, output: 1, data_sent: 0
>> [Tue Jul 01 12:02:00 2014] [debug] proxy_util.c(2029): proxy: AJP: has released connection
for (localhost)
>>
>> ----------------------------------------------------------------------------
>> [12:03:30] Apache recognizes the timeout. (180 sec after disconnecting)
>> ----------------------------------------------------------------------------
>>
>> ==> httpd-2.2.15/logs/access_log <==
>> 133.137.177.172 - - [01/Jul/2014:12:00:26 +0900] "POST /upload/ultest HTTP/1.1" 200
- 183547381 -
>>
>> ----------------------------------------------------------------------------
>>
>>
>> Regards,
>>
>> --
>> Nozomi Anzai
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
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>>
>
>
> --
> Nozomi Anzai
>
> ---------------------------------------------------------------------
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>

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