How to invalidate the browser cache?

Hello,
at the [AFP Wiki Site|http://wiki.sdn.sap.com/wiki/display/AFP/SAPPortal-AjaxFramework+Page] I found the document "Ajax Framework Page (AFB) - Features and Benefits", where it says
! There's no need to manually clear the browser cache when it is automatically
invalidated
Browser cache is automatically invalidated when
The SAP NetWeaver Portal is updated with a new Support Package (SP)
Content has changed
User's roles are modified (adding/removing all or parts of roles)
Does anbody know how to force this invalidation on client or server side? I mean, how does the client side cache know that the roles of a user changed?

Hi Björn,
you might know this but just to be sure.
Backend side: HTTP > invalidate via visual admin, Navigation cache to be invalidated via system administration role, PCD cache to be invalidated via system administration role
Client side: to force the browser to pull the new content with IE > CtrlF5, FF > CtrlShift+R. The new HTTP content is pulled even if the server HTTP cache stores old content. In case of F5 the old content from the server HTPS cache will be pulled.
See you next week!
Best regards,
Alex

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CACHE MANIFEST
song01.mp3
song02.mp3
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to the .htaccess of this directory.
The Apache-logs clearly show that the Safari (respectively "AppleCoreMedia") doesn't care about the application cache when it comes to audio-files:
Safari itself seems to acknowledge the manifest and indeed preload the files:
192.168.0.40 - - [23/Jul/2011:12:45:46 +0200] "GET /websql/index2.html HTTP/1.1" 200 2619 "-" "Mozilla/5.0 (iPad; U; CPU OS 4_3_3 like Mac OS X; de-de) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8J2 Safari/6533.18.5"
192.168.0.40 - - [23/Jul/2011:12:45:46 +0200] "GET /websql/cache.manifest HTTP/1.1" 200 79 "-" "Mozilla/5.0 (iPad; U; CPU OS 4_3_3 like Mac OS X; de-de) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8J2 Safari/6533.18.5"
192.168.0.40 - - [23/Jul/2011:12:45:46 +0200] "GET /websql/cache.manifest?%3E HTTP/1.1" 200 79 "-" "Mozilla/5.0 (iPad; U; CPU OS 4_3_3 like Mac OS X; de-de) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8J2 Safari/6533.18.5"
192.168.0.40 - - [23/Jul/2011:12:45:46 +0200] "GET /websql/song02.mp3 HTTP/1.1" 200 120525 "-" "Mozilla/5.0 (iPad; U; CPU OS 4_3_3 like Mac OS X; de-de) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8J2 Safari/6533.18.5"
192.168.0.40 - - [23/Jul/2011:12:45:46 +0200] "GET /websql/song01.mp3 HTTP/1.1" 200 120525 "-" "Mozilla/5.0 (iPad; U; CPU OS 4_3_3 like Mac OS X; de-de) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8J2 Safari/6533.18.5"
Up to this point I did nothing but opening my test-application in Safari.
Playing song01.mp3:
192.168.0.40 - - [23/Jul/2011:12:47:25 +0200] "GET /websql/song01.mp3 HTTP/1.1" 206 2 "-" "AppleCoreMedia/1.0.0.8J2 (iPad; U; CPU OS 4_3_3 like Mac OS X; de_de)"
192.168.0.40 - - [23/Jul/2011:12:47:25 +0200] "GET /websql/song01.mp3 HTTP/1.1" 206 120525 "-" "AppleCoreMedia/1.0.0.8J2 (iPad; U; CPU OS 4_3_3 like Mac OS X; de_de)"
192.168.0.40 - - [23/Jul/2011:12:47:25 +0200] "GET /websql/song01.mp3 HTTP/1.1" 206 120525 "-" "AppleCoreMedia/1.0.0.8J2 (iPad; U; CPU OS 4_3_3 like Mac OS X; de_de)"
192.168.0.40 - - [23/Jul/2011:12:47:25 +0200] "GET /websql/song01.mp3 HTTP/1.1" 304 - "-" "AppleCoreMedia/1.0.0.8J2 (iPad; U; CPU OS 4_3_3 like Mac OS X; de_de)"
192.168.0.40 - - [23/Jul/2011:12:47:25 +0200] "GET /websql/song01.mp3 HTTP/1.1" 206 120525 "-" "AppleCoreMedia/1.0.0.8J2 (iPad; U; CPU OS 4_3_3 like Mac OS X; de_de)"
192.168.0.40 - - [23/Jul/2011:12:47:29 +0200] "GET /websql/song01.mp3 HTTP/1.1" 304 - "-" "AppleCoreMedia/1.0.0.8J2 (iPad; U; CPU OS 4_3_3 like Mac OS X; de_de)"
192.168.0.40 - - [23/Jul/2011:12:47:29 +0200] "GET /websql/song01.mp3 HTTP/1.1" 206 120525 "-" "AppleCoreMedia/1.0.0.8J2 (iPad; U; CPU OS 4_3_3 like Mac OS X; de_de)"
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192.168.0.40 - - [23/Jul/2011:12:48:04 +0200] "GET /websql/song02.mp3 HTTP/1.1" 206 2 "-" "AppleCoreMedia/1.0.0.8J2 (iPad; U; CPU OS 4_3_3 like Mac OS X; de_de)"
192.168.0.40 - - [23/Jul/2011:12:48:04 +0200] "GET /websql/song02.mp3 HTTP/1.1" 206 120525 "-" "AppleCoreMedia/1.0.0.8J2 (iPad; U; CPU OS 4_3_3 like Mac OS X; de_de)"
192.168.0.40 - - [23/Jul/2011:12:48:04 +0200] "GET /websql/song02.mp3 HTTP/1.1" 206 120525 "-" "AppleCoreMedia/1.0.0.8J2 (iPad; U; CPU OS 4_3_3 like Mac OS X; de_de)"
192.168.0.40 - - [23/Jul/2011:12:48:04 +0200] "GET /websql/song02.mp3 HTTP/1.1" 304 - "-" "AppleCoreMedia/1.0.0.8J2 (iPad; U; CPU OS 4_3_3 like Mac OS X; de_de)"
192.168.0.40 - - [23/Jul/2011:12:48:04 +0200] "GET /websql/song02.mp3 HTTP/1.1" 206 120525 "-" "AppleCoreMedia/1.0.0.8J2 (iPad; U; CPU OS 4_3_3 like Mac OS X; de_de)"
192.168.0.40 - - [23/Jul/2011:12:48:05 +0200] "GET /websql/song02.mp3 HTTP/1.1" 304 - "-" "AppleCoreMedia/1.0.0.8J2 (iPad; U; CPU OS 4_3_3 like Mac OS X; de_de)"
192.168.0.40 - - [23/Jul/2011:12:48:05 +0200] "GET /websql/song02.mp3 HTTP/1.1" 206 120525 "-" "AppleCoreMedia/1.0.0.8J2 (iPad; U; CPU OS 4_3_3 like Mac OS X; de_de)"
Playing song1.mp3 again:
192.168.0.40 - - [23/Jul/2011:12:48:38 +0200] "GET /websql/song01.mp3 HTTP/1.1" 304 - "-" "AppleCoreMedia/1.0.0.8J2 (iPad; U; CPU OS 4_3_3 like Mac OS X; de_de)"
192.168.0.40 - - [23/Jul/2011:12:48:38 +0200] "GET /websql/song01.mp3 HTTP/1.1" 206 120525 "-" "AppleCoreMedia/1.0.0.8J2 (iPad; U; CPU OS 4_3_3 like Mac OS X; de_de)"
192.168.0.40 - - [23/Jul/2011:12:48:38 +0200] "GET /websql/song01.mp3 HTTP/1.1" 206 120525 "-" "AppleCoreMedia/1.0.0.8J2 (iPad; U; CPU OS 4_3_3 like Mac OS X; de_de)"
192.168.0.40 - - [23/Jul/2011:12:48:38 +0200] "GET /websql/song01.mp3 HTTP/1.1" 304 - "-" "AppleCoreMedia/1.0.0.8J2 (iPad; U; CPU OS 4_3_3 like Mac OS X; de_de)"
192.168.0.40 - - [23/Jul/2011:12:48:38 +0200] "GET /websql/song01.mp3 HTTP/1.1" 206 120525 "-" "AppleCoreMedia/1.0.0.8J2 (iPad; U; CPU OS 4_3_3 like Mac OS X; de_de)"
192.168.0.40 - - [23/Jul/2011:12:48:40 +0200] "GET /websql/song01.mp3 HTTP/1.1" 304 - "-" "AppleCoreMedia/1.0.0.8J2 (iPad; U; CPU OS 4_3_3 like Mac OS X; de_de)"
192.168.0.40 - - [23/Jul/2011:12:48:40 +0200] "GET /websql/song01.mp3 HTTP/1.1" 206 120525 "-" "AppleCoreMedia/1.0.0.8J2 (iPad; U; CPU OS 4_3_3 like Mac OS X; de_de)"
Playing song2.mp3 again:
192.168.0.40 - - [23/Jul/2011:12:49:12 +0200] "GET /websql/song02.mp3 HTTP/1.1" 304 - "-" "AppleCoreMedia/1.0.0.8J2 (iPad; U; CPU OS 4_3_3 like Mac OS X; de_de)"
192.168.0.40 - - [23/Jul/2011:12:49:12 +0200] "GET /websql/song02.mp3 HTTP/1.1" 206 120525 "-" "AppleCoreMedia/1.0.0.8J2 (iPad; U; CPU OS 4_3_3 like Mac OS X; de_de)"
192.168.0.40 - - [23/Jul/2011:12:49:12 +0200] "GET /websql/song02.mp3 HTTP/1.1" 206 120525 "-" "AppleCoreMedia/1.0.0.8J2 (iPad; U; CPU OS 4_3_3 like Mac OS X; de_de)"
192.168.0.40 - - [23/Jul/2011:12:49:12 +0200] "GET /websql/song02.mp3 HTTP/1.1" 304 - "-" "AppleCoreMedia/1.0.0.8J2 (iPad; U; CPU OS 4_3_3 like Mac OS X; de_de)"
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Every file is downloaded again completely when playing it. So "AppleCoreMedia" (whatever this may be exactly, the QuickTime-plugin that is triggered by the HTML 5 audio-element I suppose?) either doesn't have access to the Application Cache or simply just doesn't realize the files in it. So if I switch my iPad to "Airplane Mode" now, the Safari is unable to access / load / play the files.
I also tried using a QuickTime-object instead of an HTML 5 audio-tag (as far as I know HTML 5 audio and video in Safari always use QuickTime?) and controlling it with something like:
document.movie1.SetURL('song02.mp3');
Nothing changes, it's just like using HTML 5 audio and everything gets downloaded again when loading/playing it.
And even if this would work there'd still be a problem:
To properly implement that I would have to load the MP3-file in the Application Cache before playing it. When doing this it seems impossible to show a "real" progress: The ProgressEvent that is fired from the Application Cache after updating it doesn't seem to provide any information about data loaded so far and the complete size of a file. It's just "File 1 from 2" and so on, and not a "real" progress where I could determine something like: "100 kB of 1.2 MB loaded" as I can with the audio-element.
All the other storage-approaches like Web SQL / Web Database or Local Storage are no help either:
I don't see any way of getting the MP3 data into Local Storage or Web Database or getting it out again to play it. The HTML 5 Canvas-element has a toDataURL()-function to produce a Base64-encoded representation and use it for storage - the Audio-element doesn't seem to have anything like this.
My last really "dirty" approach was trying to load "manually" Base64-encoded-MP3s with a combination of AJAX and PHP: A PHP-script outputs a Base64-representation of a MP3-file and is loaded by AJAX, so I could store the Base64-representation e.g. as Local Storage or in Web Database:
<?php
$infile = 'song01.mp3';
$contents = file_get_contents($infile);
$base64 = base64_encode($contents);
$audio = 'data:audio/mp3;base64,'.$base64.'';
echo $audio;
?>
I tried using the resulting AJAX responseText as the source-argument in an audio-source-tag. Suprise: It doesn't work in Safari on my iPad 2, the player just fails to load the "file", although this works fine in Chrome on Windows. Possibly a size limitation for Base64-URIs on Safari / iOS.
And again: Even if this was working in iOS/Safari I don't know of a way to determine a real progress from an AJAX-query...
The last thing I could think of is not replacing the audio- or source-tags when loading a song but leaving them in the DOM-structure, check if it's already there when a song is loaded and just add a new audio-tag if a song hasn't been loaded yet.
This solution would be my last resort: I'd have to rewrite nearly the whole application to completely operate on JavaScript / AJAX to stay on one site in the browser - else the "cached" audio data would be lost again when changing to another site in Safari.
Furthermore I think there'll be a small cache limit somewhere when doing this?
Any ideas?

How to change the Browser title when report runs on the web?

Hi folks,
How to change the title of the browser when I run my report on the web? Iam using Internet explorer and Reports 6i. Is it possible in 6i or 10g reports?
Could you please tell me the step by step procedure ?
Right now the browser is displaying the URL when I run the report with format = PDF.
Thanks.

It works for me. I don't see why you have a problem with >this code.
Can you look at the source code of the html >file that was created (so, not in the browser, but in a >text editor). What do the header and title look like?The Html code in the file is same as the above code I specified. Actually I copied the same code and pasted here. But when I run the html file the Title shows up.
Don't put </html> there. Maybe that helps. I tried this, but it did not work.
Please let me know is there any way to set it dynamically inside the triggers using SRW built_in.
Thanks alot.

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