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From "Harippriya Sivapatham" <hsivapat...@pingtel.com>
Subject Re: jk_ajp_common.c errors - issues with mod_jk receiving messages from tomcat
Date Thu, 23 Jan 2003 20:58:23 GMT
I found the solution for my problems and i thought that i will record it for
future visitors ...

----- Original Message -----
From: "Harippriya Sivapatham" <hsivapatham@pingtel.com>
To: "'Tomcat Users List'" <tomcat-user@jakarta.apache.org>
Sent: Thursday, January 16, 2003 1:33 PM
Subject: jk_ajp_common.c errors - issues with mod_jk receiving messages from
tomcat


> Hi everyone,
> We are using Tomcat 3.2.3 and Apache 2.0.43 on Linux. I downloaded and
> installed mod_jk-2.0.43.so and everything seemed to work fine (atleast on
> IE).
>
> However, when I looked at the mod_jk log and i saw the following errors:
>
> [Thu Jan 16 12:23:49 2003]  [jk_ajp_common.c (681)]: ERROR: can't receive
> the response message from tomcat, network problems or tomcat is down.
> [Thu Jan 16 12:23:49 2003]  [jk_ajp_common.c (1050)]: Error reading reply
> from tomcat. Tomcat is down or network problems.
> [Thu Jan 16 12:23:49 2003]  [jk_ajp_common.c (1187)]: ERROR: Receiving
from
> tomcat failed, recoverable operation. err=0
>
> What do these errors mean and how can i fix them?

I was using the workers.properties that was shipped with tomca (not a wise
thing) but everything worked. But when i modified it to suit my environment,
these errors vanished.

>
> I was tracking down a strange problem and that's when i happened to see
the
> log. I would be glad if anyone had any insights into this and if the
errors
> seen in mod_jk were responsible for the problems i am facing:
>
> On our website, we use the following redirection:
> User login:   /pds/login/login.html -- Works fine
> Redirects to: /pds/login/j_security_check -- Works fine
> Redirects to: /pds/initialize/initialize.jsp -- Redirects fine
> Redirects to: /pds/ui/index.jsp
>
> the last redirect to index.jsp works fine and Apache gives a 200 response.
> On IE, the page is loaded fine. But on Netscape, it says the following:
>
> HTTP/1.1 200 Date: Thu, 16 Jan 2003 15:04:24 GMT Server: Apache/2.0.43
> (Unix) mod_ssl/2.0.43 OpenSSL/0.9.6b mod_jk/1.2.2 Content-Length: 1371
> Last-Modified: Wed, 15 Jan 2003 16:03:10 GMT Keep-Alive: timeout=15,
max=96
> Connection: Keep-Alive Content-Type: text/html; charset=ISO-8859-1
>
> >From the apache access logs, it appears as though the index.jsp was not
> processed. However, if i hit the 'go' button on the address bar, the page
is
> loaded fine.

mod_ssl seams to have problems with HTTP 1.1 Hence it forces IE browsers to
use HTTP 1.0. When i did the same for Netscape browsers too in ssl.conf
file, the page content was displayed successfully.

>
> One small note: I am using mod_jk binary i downloaded from the
> jakarta-connectors area instead of the one that is available under
tomcat's
> bin directory. Does is make a difference?
>
> Thanks for your help in advance.
>
> Hari
>
>
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