[Active4d-dev] IE 6 and Caching

[Stuart Holroyd]

We appear to have a IE 6 caching problem.  The problem seems to have 
started with 4D 2004 (we are at 2004.1 now). The problem only occurs in 
our client's very large network.  The same software works correctly in 
IE 6 in our own very small network.

Each dynamic page has the following header (or had)
	<META HTTP-EQUIV="Pragma" CONTENT="no-cache">
	<META HTTP-EQUIV="Expires" CONTENT="0">
	<META HTTP-EQUIV="Pragma-directive" CONTENT="no-cache">
	<META HTTP-EQUIV="cache-directive" CONTENT="no-cache">
or
	<META HTTP-EQUIV="Pragma" CONTENT="no-cache">
	<META HTTP-EQUIV="Expires" CONTENT="-1">
	<META HTTP-EQUIV="Pragma-directive" CONTENT="no-cache">
	<META HTTP-EQUIV="cache-directive" CONTENT="no-cache">
or
	no cache related headers using the previous version of 4D (6.8.x).
	(It is also possible that 4D 6.8.x and A4D 3.0.0.1? did not have this 
problem)

Our Active4D.ini configuration is using the defaults, so is defined as:
        cache control =
        expires =
I have also tried
        cache control = no-cache
        expires = 0
From our office, we are required to use VPN software to access the 
client network.  User's internal and external (using VPN) to the 
network experience the same problem. The client network may or may not 
be using proxy servers.

I have tried all the options in the IE 6 Temporary Internet Files 
Setting panel.

It appears, but I have not confirmed yet, that the major problem is 
with <a href="abc.a4d?id=123">Name goes here</a> links.  Forms using a 
method=POST do not seem to have the same problem with IE caching.  The 
basic problem goes like this:

	1) pick a record from a list, where the list is a set of links like 
above.
	2) show the data details of the record selected
	3) modify the data and save the data
	4) pick the same record from the list, and you receive an old copy of 
the page
	5) refresh (reload) the page, and the new data changes appears

I have tried one other browser, Mozilla 1.7.5.  Of course, Mozialla has 
no problems with caching. But since IE6 is our client's standard, we 
are stuck with IE 6.

We are using 4DRuntimeSingleUser 2004.1  and Active4D 3.0.1b7.  Any 
help would be, well, helpful.

---------------------------
Stuart Holroyd
www.aktiv.com
250.658.6300
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