SP RelayState not used with mod_jk even if returned by the IdP

[gael.thiabaud at fr.michelin.com]

Dear Shibboleth team,

I am working on deploying a Shibboleth SP (Centos 5 Apache 2.2) connected 
to a Shibboleth IdP (2.4).

The SP and the IdP are on the same server but use a different url with 
different certificates.

Currently I have the following behavior:

The user requests the targeted resource url,
The SP redirect to the IdP that redirect to CAS for authentication.
The IdP redirect to the SP after a successful login.
If in Apache I use Directory in the virtual host the targeted static 
resource is opened successfully.
If in Apache I use a Location with a mod_jk, the user retrieve a 404 
because  the value of the RelayState is not used and the resource request 
is something like:
 /Shibboleth.sso/SAML2/POST in place of something like 
/web/targetedRessources

Could you help me to understand what I miss in my configuration?

I had checked that the RelayState value is returned by the IdP and it is! 
(in mem and cookie).

>From SP to IdP: 
RelayState=ss%3Amem%3Aacbaad85d99342986e59859d3a69aa4dd5239ce716f27a1b1e2cb335e367815b
>From Idp to SP: POST 
                        RelayState: 
ss:mem:acbaad85d99342986e59859d3a69aa4dd5239ce716f27a1b1e2cb335e367815b
Best regards
PS: Current technical context
·       Red Hat: 5.x
·       Apache/2.2.31 (Unix)
·       OpenSSL/0.9.8e-fips-rhel5
·       mod_jk/1.2.40
·       CAS 3.4.11 over tomcat 7.0.23
·       Shibboleth IdP 2.40 over tomcat 6.0.37
·       Shibboleth SP shibboleth.x86_64 2.5.5-3.1
SP RelayState not used with mod_jk even if returned by the IdP

----------------------------------------------------

Gaël THIABAUD
WIPRO Company
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[Providing services for Michelin Dept. DGSI/BS/GS]
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