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Subject Info: IE "Page Expired Error" when logging in A d d  -  P o s tAdd P o s t
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aspdog
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Joined: November/21/2004
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Added: November/22/2004 at 5:12am | IP Logged Quote aspdog

Your users with Internet Explorer may have received the "Page Expired" error.  For ASPProtect users, it happens when  the user is not logged on and tries to invoke the target page. check_user_inc.asp puts up the login form, and IE sees it as part of the target page.  Any later attempt to Back up and reload from cache gives the errror. 

My solution was, after successful login, instead of falling through the bottom of check_user_inc.asp and running the target page, I issue a re-direct to reload the target page. I also added META tags on the dynamic login form to say no-cache and expire now, so the re-direct really does reload the target page. This time, of course, check_user_inc.asp does not need to put up the login form, and the new target page in cache contains no form at all.  So, IE will not give a Page Expired error when Backing up to it later.

Netscape, and I gather other browsers, do not behave the same way, so I limited the solution to IE.  Also, the solution only works if the target page has no form of its own.

I'm uploading my customized version of check_user_inc.asp that contains this solution.  (In it, I also used the Javascript focus method to place the "cursor" in the Username field when the login form loads.)

2004-11-22_050940_check_user_inc.zip



Edited by cwilliams on November/22/2004 at 11:52am
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cwilliams
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Joined: April/06/2004
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Added: November/22/2004 at 11:50am | IP Logged Quote cwilliams

Please be aware folks..

This file is not provided by CJWSoft. Though this may work very well use of it is not supported in any way. We have not tested it.

This user is not using the option pack so this file will not be compatible with anyone using that because it does not have support for groups and some of the other new features.

Regardless..we appretiate users sharing ideas and solutions that they have come up with.



Edited by cwilliams on November/22/2004 at 11:59am


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Best Regards, Christopher Williams www.CJWSoft.com
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aspdog
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Joined: November/21/2004
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Added: November/22/2004 at 2:01pm | IP Logged Quote aspdog

I agree -- don't use the code as is.  I provided it only as an idea for a work-around if your ASPProtect users with Internet Explorer complain about the Page Expired message.
 
I did not test it to be sure the parms coming into the target page (which would be part of the URL when bookmarking) are properly preserved.  It would be easy to make sure they are preserved, but I am not sure the code in the example does that.  I also customized the code with my own page header and footer. 
 
I have the Option Pack but the site does not need it yet so I haven't applied it.  I don't expect many problems re-applying my few lines of modifications.
 
The IE behavior is not a big deal if you provide an explicit login page, since users would have less interest in paging back to that.   In my case, I simply gave a link to a protected part of the site, and when they take that link, they instead get the login form if they aren't logged on.  Once they log on, they get their desired content page, to which they sometimes want to page back later on. 
 
From searching the Microsoft Knowledge Base and other sources, I could not find a way (using HTML) to turn off IE's behavior of refusing to quietly reload a page containing form data. Netscape does not do this.  So my IE workaround is to ensure my target page does not contain the login form.  It does not solve the cause of the problem, but in this case it gets rid of the Page Expired error message for my IE users.
 
I also purchased ASPProtect for another site, and I'm using that "out of the box" unmodified.  I'm very pleased with ASPProtect's functionality and the fact that it works completely without the need to customize.  However, I've found it is very easy to customize if I want to.
 
  Jim
  Puli Club of America
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