Nitin wrote:
> Hi Friends,
>
> I want your help.
> I have a webpage with two frames.
> When I click on the button on one frame it shows me the result (that is
> a perl-cgi file) on the second but the problem is that it is showing the
> old page (taking from the cache).
>
> Is there any way in perl to load a fresh page in that frame.
Here are my cache notes:
Example HTTP 1.0 headers
Expires: Tue, 08 Apr 1997 17:20:00 GMT
Expires: 0
Pragma: no-cache
Example HTTP 1.1 headers
Cache-Control: must-revalidate
Cache-Control: max-age=3600
Cache-Control: no-cache
Stop caching:
Try outputting one/both of these headers:
Using HTTP/1.0:
print "Pragma: no-cache\n";
Using HTTP/1.1:
print "Cache-control: no-cache\n";
Try expiry headers using both the Date and Expires header
(the server may fill in the Date: for you).
print "Date: [HTTP date]\n";
print "Expires: [HTTP date]\n";
Sample code snipped from posts:
print STDOUT <<"EOD";
HTTP/1.1 200 OK
Date: $date
Content-type: $content_type
Content-length: $content_length
Pragma: no-cache
Cache-control: no-cache
Expires: now
EOD
The first line may/may not be needed and naturally you have to build
the vrbls used according to HTTP specs. If all of that won't get it
nothing will. :)
Or you can return HTML to do this sort of thing:
HTML versions:
<META HTTP-EQUIV="pragma" CONTENT="no-cache">
<META HTTP-EQUIV="Expires" CONTENT="Tue, 26-Oct-1965 12:00:00">
<META HTTP-EQUIV="Expires" CONTENT="NOW">
<META HTTP-EQUIV="last modified" CONTENT="NOW">
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