How to handle expired sessions in portals

Question

Hai all,
  we have implemented a logic which is given in the following blog (to handle expired sessions).
(Blog from--Thomas Jung)
/people/thomas.jung3/blog/2004/12/06/bsp-developers-journal-part-xv--stateful-bsp-and-timeouts
this is working fine when we run application from workbench organizer.but when i run the same application through Portal,it was failed.
if someone comeacross this situation please kindly send your comments and solution to this problem.
Thanks in advance,
Innu.

Answer 1

Hai Durai,
Thanks for the immediate response.
Here i will give the clear idea about the failure situation.
  IF gv_load IS INITIAL.
    DATA: fields TYPE tihttpnvp.
    FIELD-SYMBOLS: <wa_fields> LIKE LINE OF fields.
    CALL METHOD request->get_form_fields
      CHANGING
        fields = fields.
    LOOP AT fields ASSIGNING <wa_fields>.
      IF <wa_fields>-name CS 'htmlb' OR
         <wa_fields>-name CS 'HTMLB'.
        gv_load = '-'.  "False - Problem with ABAP_FALSE
       appearing the same as initial.
      ENDIF.
    ENDLOOP.
    IF gv_load IS INITIAL.
      gv_load = abap_true.
    ENDIF.
  ENDIF.
  IF gv_load NE abap_true.
    DATA: url  TYPE string.
    DATA: page TYPE string.
    page = 'reload.htm'.
    DATA:  params TYPE tihttpnvp.
    FIELD-SYMBOLS: <wa_params> LIKE LINE OF params.
    APPEND INITIAL LINE TO params ASSIGNING <wa_params>.
    <wa_params>-name = 'url1'.
    CONCATENATE 'http://sapcrmdev.server.com:8080/sap/bc/bsp/sap/'
                 'salesord/default.htm'
                INTO <wa_params>-value.
    CONCATENATE ' ' ' ' INTO <wa_params>-value.
   <b> CALL METHOD
      cl_http_ext_webapp=>create_url_for_bsp_application
      EXPORTING
        bsp_application      = 'SALESORD'
        bsp_start_page       = page
        bsp_start_parameters = params
      IMPORTING
        abs_url            = url.
    navigation->exit( url ).
  ENDIF.</b>
  The imported parameter URL,which loads the reload page with parameter URL1.
Exactly here i am getting the problem.
[My application is launching through iViews as external services.Clearly, when i launch the portals that displays different bsp applications as menu options.when i click on my application that opens another window and from there on my application runs in that window.]
As we are constructing URL1 above, we are unable to construct Portal url to reload from reload page.]
so what should exactly i send value through url1 parameter to launch my application through portal..?
if you have any sample code plz send.
Thanks,
Innu.