Using the HTTP Callback Classes to get session ID in AbstractLoginModule ...?

Dear All,

I am using the custom login module.It is working fine.But i need to get the session id into the request.I am unable to get the request.Once i received the request i can able to get the session id. HttpGetterCallback by using how to get the session id.

i followed this help document.But i am not getting any information here.

Using the HTTP Callback Classes - Developing Authentication Enhancements on the AS Java - SAP Library

Please tell me...?

Thanks and Best Regards,

Durga Rao V.