Owen,
What we are doing is we reverse proxy our requests for a /main/ in the URL to one of our servers. Everything works so far except for this URL (/main/FileStore.ashx/Attachment/13001=Blue%20hills.jpg ) which is just a .jpg file. I don't know what is special about it! Same URLs without a %20 work fine!!
Here is what I have in httpd.conf in (do I need anything else?)
ErrorLog logs/error.log
LogLevel debug
LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\"" combined
LogFormat "%h %l %u %t \"%r\" %>s %b" common
LogFormat "%{Referer}i -> %U" referer
LogFormat "%{User-agent}i" agent
LoadModule proxy_module modules/mod_proxy.so
LoadModule proxy_http_module modules/mod_proxy_http.so
LoadModule headers_module modules/mod_headers.so
LoadModule deflate_module modules/mod_deflate.so
ProxyRequests Off
ProxyPreserveHost On
ProxyPass /main/ http://sw55qaprimoa01/main/
ProxyPassReverse /main/ http://sw55qaprimoa01/main/
The rest is the default from the apache ( 2.0.59 - we have to use this version) installation.
I cleared the log files and ran the test again and just tryied to get the file that has the issue. Here is the only entry in access.log:
10.172.93.120 - - [15/Sep/2006:14:44:04 +0000] "GET /main/FileStore.ashx/Attachment/13001=Blue%20hills.jpg HTTP/1.1" 500 628
And last entries from error.log:
[Fri Sep 15 14:43:08 2006] [debug] child.c(697): Child 5684: Worker thread 244 starting.
[Fri Sep 15 14:43:08 2006] [debug] child.c(697): Child 5684: Worker thread 245 starting.
[Fri Sep 15 14:43:08 2006] [debug] child.c(697): Child 5684: Worker thread 246 starting.
[Fri Sep 15 14:43:08 2006] [debug] child.c(697): Child 5684: Worker thread 247 starting.
[Fri Sep 15 14:43:08 2006] [debug] child.c(697): Child 5684: Worker thread 248 starting.
[Fri Sep 15 14:43:08 2006] [debug] child.c(697): Child 5684: Worker thread 249 starting.
As you see, there is nothing w/ the same timestamp and that is the end of error.log. I don't know if logs are buffered but even if I do stop apache, I don't see anything related to this request in error.log.
-JalilOn 9/14/06, Boyle Owen < Owen.Boyle@xxxxxxx> wrote:> -----Original Message-----
> From: Jalil Feghhi [mailto:jalil.feghhi@xxxxxxxxx]
> Sent: Thursday, September 14, 2006 11:28 PM
> To: users@xxxxxxxxxxxxxxxx
> Subject: [users@httpd] Help debugging 500 Error
>
> We are using Apache 2.0.x with mod_proxy and for a specific
> URL we get a 500 error. I check the error and access log
> files and only see that there was an internal server error in
> the access.log file.
500 usually means that the request caused apache to execute some
server-sided code (eg CGI or PHP) but that the program failed. So this
will be an error in the program apache called - not in apache itself or
in any proxy.
> There is no info in error.log file that
> helps me find out what went wrong.
Are you absolutely sure? Every error in apache (4xx or 5xx response
code) should lead to a line in the error log.. please check again
(cross-reference the timestamps) Are you sure you don't get "Premature
end of script headers"?
> I was wondering how else I can get more info why the request
> failed.
It depends on the server-sided logic - if it's CGI, you can get the
script output by activating ScriptLog (see docs for details).
> I am sure the request doesn't get reverse proxied to
> the destination web server and something happens inside Apache.
This is correct..
But I'm wondering why a dynamic resource would end up getting proxied -
usually, you proxy requests immediately (based on the pattern of the
URL). Can you supply more details of exactly how your site works?
Rgds,
Owen Boyle
Disclaimer: Any disclaimer attached to this message may be ignored.
>
> Any help is appreciated.
>
> -Jalil
>
> --
> Jalil
>
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