You are viewing a plain text version of this content. The canonical link for it is here.
Posted to users@httpd.apache.org by fredk2 <fr...@gmail.com> on 2009/03/02 22:38:20 UTC
[users@httpd] Is there a known Header limit in mod_jk (or bug)?
Hi,
When I send a request to Tomcat via mod_jk I get the following error (code
413):
Request Entity Too Large
The requested resource
/myapp/jsp/cookieshowvalue.jsp
does not allow request data with GET requests, or the amount of data
provided in the request exceeds the capacity limit.
I total size of my headers/cookies is about 7.5KB on Solaris 10 and 9.8KB on
RH Linux. I made sure that Apache's limit was set way above its default of
8K (LimitRequestFieldSize 25000)
The mod_jk logfiles shows:
[Mon Mar 02 14:42:22.856 2009] [27893:4136860560] [error]
ajp_marshal_into_msgb::jk_ajp_common.c (417): failed appending the header
value
[Mon Mar 02 14:42:22.856 2009] [27893:4136860560] [info]
ajp_service::jk_ajp_common.c (2042): Creating AJP message failed, without
recovery
[Mon Mar 02 14:42:22.856 2009] [27893:4136860560] [info]
service::jk_lb_worker.c (1188): unrecoverable error 413, request failed.
Client failed in the middle of request, we can't recover to another
instance.
[Mon Mar 02 14:42:22.856 2009] myWorker test.domain.com
/myapp/jsp/cookieshowvalue.jsp 200 0.000316 0 HTTP/1.1 GET
[Mon Mar 02 14:42:22.856 2009] [27893:4136860560] [info]
jk_handler::mod_jk.c (2357): Aborting connection for worker=myWorker
The problem is apparent with any version of Apache or mod_jk or Tomcat (I am
testing with 2.2.11, 1.2.26, 6.0.14)
I read the following doc
http://tomcat.apache.org/connectors-doc/ajp/ajpv13a.html which says there is
no limit:
"This works on the assumption that no header names will have length greater
than 0x9999 (==0xA000 - 1), which is perfectly reasonable, though somewhat
arbitrary. (If you, like me, started to think about the cookie spec here,
and about how long headers can get, fear not -- this limit is on header
names not header values. It seems unlikely that unmanageably huge header
names will be showing up in the HTTP spec any time soon)."
I tried to read some of the source code jk_ajp_common.c ... but i cannot
figure out where the limit for the header array(s) comes from.
Any idea guidance troubleshooting tips are welcome...
Regards - Fred
--
View this message in context: http://www.nabble.com/Is-there-a-known-Header-limit-in-mod_jk-%28or-bug%29--tp22297260p22297260.html
Sent from the Apache HTTP Server - Users mailing list archive at Nabble.com.
---------------------------------------------------------------------
The official User-To-User support forum of the Apache HTTP Server Project.
See <URL:http://httpd.apache.org/userslist.html> for more info.
To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
" from the digest: users-digest-unsubscribe@httpd.apache.org
For additional commands, e-mail: users-help@httpd.apache.org
Re: [users@httpd] Re: Is there a known Header limit in mod_jk (or
bug)?
Posted by Nick Kew <ni...@webthing.com>.
fredk2 wrote:
> Hi,
>
> I kept on testing with the attributes max_packet_size and packetSize (in
> worker.properties and server.xml) and it appears to fix the large header
> problem.
>
> Does this mean that all the headers together have to fit into a buffer which
> size is set by max_packet_size?
You'd be better off posting this in a tomcat forum. The fixes you
made are in tomcat, and mod_jk is tomcat's baby.
--
Nick Kew
---------------------------------------------------------------------
The official User-To-User support forum of the Apache HTTP Server Project.
See <URL:http://httpd.apache.org/userslist.html> for more info.
To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
" from the digest: users-digest-unsubscribe@httpd.apache.org
For additional commands, e-mail: users-help@httpd.apache.org
[users@httpd] Re: Is there a known Header limit in mod_jk (or bug)?
Posted by fredk2 <fr...@gmail.com>.
Hi,
I kept on testing with the attributes max_packet_size and packetSize (in
worker.properties and server.xml) and it appears to fix the large header
problem.
Does this mean that all the headers together have to fit into a buffer which
size is set by max_packet_size?
Thanks - Fredk
fredk2 wrote:
>
> Hi,
>
> When I send a request to Tomcat via mod_jk I get the following error (code
> 413):
>
> Request Entity Too Large
> The requested resource
> /myapp/jsp/cookieshowvalue.jsp
> does not allow request data with GET requests, or the amount of data
> provided in the request exceeds the capacity limit.
>
> I total size of my headers/cookies is about 7.5KB on Solaris 10 and 9.8KB
> on RH Linux. I made sure that Apache's limit was set way above its default
> of 8K (LimitRequestFieldSize 25000)
>
> The mod_jk logfiles shows:
> [Mon Mar 02 14:42:22.856 2009] [27893:4136860560] [error]
> ajp_marshal_into_msgb::jk_ajp_common.c (417): failed appending the header
> value
> [Mon Mar 02 14:42:22.856 2009] [27893:4136860560] [info]
> ajp_service::jk_ajp_common.c (2042): Creating AJP message failed, without
> recovery
> [Mon Mar 02 14:42:22.856 2009] [27893:4136860560] [info]
> service::jk_lb_worker.c (1188): unrecoverable error 413, request failed.
> Client failed in the middle of request, we can't recover to another
> instance.
> [Mon Mar 02 14:42:22.856 2009] myWorker test.domain.com
> /myapp/jsp/cookieshowvalue.jsp 200 0.000316 0 HTTP/1.1 GET
> [Mon Mar 02 14:42:22.856 2009] [27893:4136860560] [info]
> jk_handler::mod_jk.c (2357): Aborting connection for worker=myWorker
>
> The problem is apparent with any version of Apache or mod_jk or Tomcat (I
> am testing with 2.2.11, 1.2.26, 6.0.14)
>
> I read the following doc
> http://tomcat.apache.org/connectors-doc/ajp/ajpv13a.html which says there
> is no limit:
>
> "This works on the assumption that no header names will have length
> greater than 0x9999 (==0xA000 - 1), which is perfectly reasonable, though
> somewhat arbitrary. (If you, like me, started to think about the cookie
> spec here, and about how long headers can get, fear not -- this limit is
> on header names not header values. It seems unlikely that unmanageably
> huge header names will be showing up in the HTTP spec any time soon)."
>
> I tried to read some of the source code jk_ajp_common.c ... but i cannot
> figure out where the limit for the header array(s) comes from.
>
> Any idea guidance troubleshooting tips are welcome...
>
> Regards - Fred
>
--
View this message in context: http://www.nabble.com/Is-there-a-known-Header-limit-in-mod_jk-%28or-bug%29--tp22297260p22308224.html
Sent from the Apache HTTP Server - Users mailing list archive at Nabble.com.
---------------------------------------------------------------------
The official User-To-User support forum of the Apache HTTP Server Project.
See <URL:http://httpd.apache.org/userslist.html> for more info.
To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
" from the digest: users-digest-unsubscribe@httpd.apache.org
For additional commands, e-mail: users-help@httpd.apache.org