Take advantage of caching in the browser

It is such that I have taken a test on Google Page Speed insights and describing the more time that I need to looked at my "Take advantage of caching in the browser" on page
I have azure and set CloudFlare SSL on all https page.
Is there some code or other as do you in some way help since anything more.

Hi Jesper,
It seems that you have already found the solution in this case (http://stackoverflow.com/a/28650357):
Since you are using CloudFlare, there's an easy way to specify settings for browser caching. From the CloudFlare admin panel go to Domain > CloudFlare Settings > Performance Settings > Minimum TTL. I generally set this to 1 month.
FWIW, personally I find www.webpagetest.org gives better feedback for refinements like this, it gives more detailed feedback of caching details for each individual resource.
If you have any difficulty in future programming, we welcome you to post in forums again.
Regards,
Will
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Similar Messages

Does the Browser cach the jnlp-file?

I have a problem, I think with the browser's caching. As I modify the *.jnlp-File, the old version is loaded, not the new one!
Or is the old version cached by the webStart-Caching-Mechanism?
To update the jnlp-file, sometimes it is helpful to clear the Clients webStart cache.
Is that correct?
regards,
ulli

The browser does in fact cache the jnlp and it can be a real problem. If there is no expiration on the JNLP then the browser may load it from cache instead of going to your web server on the next access. This means you may have modified your JNLP on the server for a new release, but users can start your application WITHOUT GETTING THE LATEST JNLP!
You can solve this problem by serving the JNLP file from your own servlet (or other HTTP serving technique) and setting the expire header. Setting it to 0 does the right thing.
Do NOT however, set "Pragma", "no-cache". no-cache stops the browser from writing the JNLP to the file system...this in turn causes a problem when Web Start tries to find the jnlp file after the browser starts Web Start....the jnlp file is not there.
Note that the JnlpDowloadServlet provided by Sun in the Web Start developers kit does NOT expire the JNLP file...you must fix this code yourself if you want it to work correcly. Sun was supposed to make this source code available but I can't find it anywhere. We used a de-compiler to de-compile the code, fix it and re-jar it.

How to make the browser reload an updated jar-file?

Hi there,
Previosly when running applets using MSIE, all needed to reload an updated jar-file was pressing CTRL+F5
Currently I've been assigned to re-develop some of my old applets and now I realize that the old CTRL+F5 won't do the trick any more since the old jar file is still in the cache and the new jar file is not loaded.
I learned the hard way that all I can do is to manually clear the cache of the browser (Tools | Options | Delete files) and restart the browser and after that the new jar file is correctly loaded.
Cache settings of the browser is set to "Reload on every visit to the page"
Currently running Win2k, MSIE 6.0 SP1 and MSJVM 3809 but the problem also exists on Win2k, MSIE 6.0 and MSJVM 3186.
Isn't there any easier way to do this?
Currently I don't even mind not caching the jar-files at all as long as I don't get my development work trashed by having to restart the browser after every new build...
Why has the old CTRL+F5 behaviour been changed?
BR
/Jonas

I have been closing IE and reopening it for 7 months now. I don't of any other way to reload an applet.
Jason

Using Mac OSX 10.7.1: recently replaced our DSL modum & wireless router and suddently I can't get some web sites to load. Many do, but Twitter and others often do not. I've reset the browsing historty, forms, cookies and cache but it continues to happen.

Using Mac OSX 10.7.1: recently replaced our DSL modum and wireless router, suddenly I can't get some web sites to load. Many do, but Twitter and others often do not. I've reset the browsing history, forms, cookies and cache but it continues to happen.

Ok, first thing, why are you doing anything with WAMP or XAMPP when you're running a Mac? MAMP should be what you want unless you're not explaining part of what you are trying to do.
2nd thing, I haven't used MAMP in a while, but there are two possibilities for not seeing what you want to see once you have MAMP turned on. One possibility is that you already have "Web Sharing" turned on in your Sharing Preference Pane. If that is the case, port 80 will already be taken and you'll be seeing the default Apache install (files are stored at /Library/WebServer/Documents/). This would push MAMP to either not turn on it's web serving capabilities, or to push it to another port. The other possibility is that MAMP defaults to another port anyway. So instead of localhost, you might have to type in localhost:8080 or something similar. I believe the control panel that gets installed can take you to the currently MAMP-served page, and it can also help you change which port your serving on.
80 is the default port for web serving and the ONLY port that will let you get straight to the server without having to type in webaddress.com:port# instead of just webaddress.com.

[svn] 2905: Changes to allow UIComponent to take advantage of the new bindable filters (bindable wrappers around DropShadowFilter, GlowFilter, etc.

Revision: 2905
Author: [email protected]
Date: 2008-08-19 13:45:59 -0700 (Tue, 19 Aug 2008)
Log Message:
Changes to allow UIComponent to take advantage of the new bindable filters (bindable wrappers around DropShadowFilter, GlowFilter, etc. that will force the filter stack to be re-evaluated when one or more of the filter parameters change). Checkin-tests: PASS
Reviewer: Jason
Bugs: SDK-16311
QA: Yes
Ticket Links:
http://bugs.adobe.com/jira/browse/SDK-16311
Modified Paths:
flex/sdk/trunk/frameworks/projects/flex4/src/flex/core/Group.as
flex/sdk/trunk/frameworks/projects/flex4/src/flex/filters/BevelFilter.as
flex/sdk/trunk/frameworks/projects/flex4/src/flex/filters/BlurFilter.as
flex/sdk/trunk/frameworks/projects/flex4/src/flex/filters/ColorMatrixFilter.as
flex/sdk/trunk/frameworks/projects/flex4/src/flex/filters/ConvolutionFilter.as
flex/sdk/trunk/frameworks/projects/flex4/src/flex/filters/DisplacementMapFilter.as
flex/sdk/trunk/frameworks/projects/flex4/src/flex/filters/DropShadowFilter.as
flex/sdk/trunk/frameworks/projects/flex4/src/flex/filters/GlowFilter.as
flex/sdk/trunk/frameworks/projects/flex4/src/flex/filters/GradientBevelFilter.as
flex/sdk/trunk/frameworks/projects/flex4/src/flex/filters/GradientFilter.as
flex/sdk/trunk/frameworks/projects/flex4/src/flex/filters/GradientGlowFilter.as
flex/sdk/trunk/frameworks/projects/flex4/src/flex/graphics/BitmapGraphic.as
flex/sdk/trunk/frameworks/projects/flex4/src/flex/graphics/Parser.as
flex/sdk/trunk/frameworks/projects/flex4/src/flex/graphics/StrokedElement.as
flex/sdk/trunk/frameworks/projects/flex4/src/flex/graphics/graphicsClasses/GraphicElement .as
flex/sdk/trunk/frameworks/projects/framework/src/FrameworkClasses.as
flex/sdk/trunk/frameworks/projects/framework/src/mx/core/UIComponent.as
flex/sdk/trunk/tools/dependencychecker/flex/tools/dependencychecker/FrameworkSwcDependenc yRules.java
Added Paths:
flex/sdk/trunk/frameworks/projects/framework/src/mx/filters/
flex/sdk/trunk/frameworks/projects/framework/src/mx/filters/BaseDimensionFilter.as
flex/sdk/trunk/frameworks/projects/framework/src/mx/filters/BaseFilter.as
flex/sdk/trunk/frameworks/projects/framework/src/mx/filters/IBitmapFilter.as
Removed Paths:
flex/sdk/trunk/frameworks/projects/flex4/src/flex/filters/BaseDimensionFilter.as
flex/sdk/trunk/frameworks/projects/flex4/src/flex/filters/BaseFilter.as
flex/sdk/trunk/frameworks/projects/flex4/src/flex/filters/IBitmapFilter.as

I have problem with my Yahoo mail, e-mail take a long time to open (it first opens as a bank page). The provider think is something to do with the browser

Since a couple of weeks my btyahoo email is behaving strangely. It take a while to load when I enter, and if I click on an e-mail it opens a blank, contentless page. After a while I am eventualluy able to see the content, but it is annoying. BT (the provider) had remote access to check the problem and thinks it is something to do with the browser. They suggested I disinstall and install again. Can you advice? Will I lose all my bookmarks if I do so (I have quite a few...)

* The first time you start up any application after turning on your computer is called a cold start, which is why Firefox takes a while to load right away. (I've noticed that future versions of Firefox start up faster on a cold start then Firefox 5.0.1.) Also, a lower amount of RAM could be slowing its start-up down since Firefox is kind of memory hungry.
* As for the second part of your question, press ctrl,Alt, and the delete keys on your keyboard. The Windows Task Manager should start. Go to the processes tab and look for 'firefox.exe'. Right click on the firefox.exe and click 'End Process'. Hit Yes and wait for a minute.
* Then opening Firefox again.
Hopefully this helped somewhat!

I have an iPhone 6 with IOS 8.1.3 and when I use the landscape view in Safari, the bookmark page appears and takes up one half of the screen. How can I get rid of the bookmark page so I can have the whole screen to what I am browsing?

I have an iPhone 6 with IOS 8.1.3. When I go to the landscape view in Safari, the bookmark page appears and takes up one half of the screen. How can I get rid of the bookmark page so I can use the whole screen to what I am browsing?

OOPS! Too quick on the trigger to ask that question without trying anything. Sorry. Solved it by touching the bookmark icon.

How can I capture and take screenshots of all the browser tabs and not only windows ?

This class identifies all minimized windows and take a snapshot (screenshot) of them. I want to take screenshots also of all the broswer for example chrome tabs windows that are open but not in the front. Same idea that it get now the minimized windows but
to get the screenshots of the broswer opened tabs ! What should I change in the WindowSnap class? Since both classes are a bit long I added them to pastebin.com
What i'm doing now is to get all the minimized windows i mean all the the windows in the back if it's chrome browser windows or open tabs if it's program games other windows. This is what i'm doing in form1 constructor:
this.listBoxSnap.Items.AddRange(WindowSnap.GetAllWindows(true, true).ToArray());
int numitems = this.listBoxSnap.Items.Count;
for (int i = listBoxSnap.Items.Count - 1; i >= 0; i--)
string tt = listBoxSnap.Items[i].ToString();
if (tt.Contains(" ,"))
listBoxSnap.Items.RemoveAt(i);
listBoxSnap is just a regular listBox1 in my form1 designer.
And this is the WindowSnap class code, it's a bit long code but it's all connected:
I'm not sure what to show here from this class what is the most important part so i added all the class code to a link to pastebin.com:
WindowSnap.cs
What i'm calling/using in form1 constructor from this WindowSnap.cs class is the GetAllWaindows method:
public static WindowSnapCollection GetAllWindows(bool minimized, bool specialCapturring)
windowSnaps = new WindowSnapCollection();
countMinimizedWindows = minimized;//set minimized flag capture
useSpecialCapturing = specialCapturring;//set specialcapturing flag
EnumWindowsCallbackHandler callback = new EnumWindowsCallbackHandler(EnumWindowsCallback);
EnumWindows(callback, IntPtr.Zero);
return new WindowSnapCollection(windowSnaps.ToArray(), true);
EnumWindowsCallBackHandler is:
private delegate bool EnumWindowsCallbackHandler(IntPtr hWnd, IntPtr lParam);
EnumWindows is:
[DllImport("user32.dll")]
[return: MarshalAs(UnmanagedType.Bool)]
private static extern bool EnumWindows(EnumWindowsCallbackHandler lpEnumFunc, IntPtr lParam);
Then i have the class called WindowSnapCollection:
WindowSnapCollection.cs
The problem is in form1 constructor i'm getting only 23-24 windows in the listBox1. When i'm doing this two lines:
this.listBoxSnap.Items.AddRange(WindowSnap.GetAllWindows(true, true).ToArray());
int numitems = this.listBoxSnap.Items.Count;
I see in numitems about 30 windows and after filtering i'm getting 20 windows and i checked that's the correct number of opened minmizied windows i have in this example 20.
Now what i want to do is somehow to get with all this windows in the listBox also all the opened tabs in chrome.
For exmaple i have only 4 opened chrome windows. But in one of the chrome windows i have almost 40 tabs opened !
I want somehow to add to the listBox all this opened tabs also as captured screenshots like i'm doing now with the windows.
This is a screenshot of my program showing what i'm doing and what i get:
So now i have 19 windows captured in the next refresh it will show 20.
My question is if there is any way to capture also all the chrome opened tabs in all the windows if any opened tabs are opened at all ? Now i'm getting only the chrome opened windows captured screenshot. But i want to get also the chrome tabs captured screenshots.

Hi Chocolade1972,
Since this forum is discussing about Windows Forms general like winform controls, and your issue is related with Windows Desktop SDK, I will move this thread to the more related forum.
Thanks for your understanding.
Best Regards,
Edward
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After I search using Google in Firefox, and hit the back arrow button to return to the main homepage I use, the browser won't take me there. Instead, I'm left at the initial results page from my search.

Assume I start at Google as my homepage. I search for Federal Reserve. Google then brings up a number of selections for Federal Reserve. I can scroll through to more search results on page 2, 3, 4, etc. Now suppose I want to use the back arrow button to go back to Google as my homepage. I’ve found what I was looking for. When I try to get back to Google, the furthest back I can go is to page 1 of the search results. The browser won’t take me back to the original starting page which was Google. Also, it doesn’t matter what the starting page or initial page was. The browser will only take me back to the initial page after the original homepage. By the way, I did not install any new software or applications prior to this problem occurring. My guess is that it may have something to do with the function keys at the top of the keyboard. But I can’t figure out what the problem is with the function keys. It’s only a guess.

using Google toolbar for searches?? disable instant search (click the wrench to the right of the tool bar, untick enable instant, and hit save. worked for me
:

Is there any way of storing audio- / video-elements in the browser cache in Safari in iOS?

Hi there,
I'm desperatly trying to find a solution for a web application that has to run on an iOS-Safari (e.g. on iPad, iPad2 and iPhone 4):
It's a web-application I wrote some time ago which lets the user search for and listen to short music samples (MP3s, all from ~100 kB to ~1.5 MB). The audio player is Flash-based, so it doesn't work on iOS-devices at the moment and I'll have to implement an alternative either in HTML 5 or with a "direct" QuickTime-object.
Both my HTML 5- and QuickTime-alternatives for iOS-devices work fine so far, but there's one major problem I can't find a solution to:
Unlike Flash and most HTML 5-capable browsers on Windows Safari on my iPad 2 won't store the audiofiles in the browsercache after loading and playing them - neither with HTML 5 audio-tags nor with a QuickTime-Object. Every time I load an audio file for playback from the server (with JavaScript-Commands, so without changing or reloading the whole page) it's downloaded again completely.
If a user listens to sample A and then to sample B, Safari forgot about having played sample A and downloads the whole MP3 again if I like to listen to it again. On a mobile device with a potentially narrow bandwith this behaviour is out of the question.
Is there a way of storing downloaded audiofiles opened by HTML 5 or QuickTime in Safari's cache so it remembers already having downloaded them - like it caches usual "web-files" like HTML, CSS or JPEG-images, or like Flash stores such objects in its local cache?
The Application Cache with a manifest-file is not an option - this only seems to work if the browser is offline, for example if the iOS-device is in "Airplane"-Mode.

Yes, I watched it. It contains interesting stuff I have to admit I didn't know yet, but unfortunately I still can't find a solution to my problem:
My first attempt was trying to use the Application Cache with a manifest file - although this is not really the intended purpose for my application... I don't have a static set of files that I want to have cached or "available offline" - I just want to cache MP3s which the user has played yet.
It should be possible to use a "dynamic manifest": One that is parsed by the Apache PHP module and listing the files played so far from a PHP session - something like this:
<?php
session_start();
header("Content-Type: text/cache-manifest, charset=UTF-8");
echo "CACHE MANIFEST\n";
foreach($_SESSION['playedSongs'] as $song)
    echo $song."\n";
?>
So whenever a song is loaded / played, I could access the PHP session with AJAX, insert the filename of the played file and manually update the manifest by calling window.applicationCache.update().
There are two problems with this:
First of all: It doesn't work. And I didn't even get to the point of trying to use a dynamic manifest:
<!DOCTYPE html>
<html manifest="cache.manifest">
    <head>
        <title>Test</title>
        <script type="text/javascript">
        function playStuff(id)
            if(id == 1)
                window.document.getElementById("audio").innerHTML = '<audio controls preload="automatic" autobuffer><source src="song01.mp3" type="audio/mp3" /></audio>';
            else if(id == 2)
                window.document.getElementById("audio").innerHTML = '<audio controls preload="automatic" autobuffer><source src="song02.mp3" type="audio/mp3" /></audio>';
        </script>
    </head>
    <body>
        <div id="audio"></div><br />
        <br />
        <input type="button" value="playStuff(1)" onclick="playStuff(1)" />
        <input type="button" value="playStuff(2)" onclick="playStuff(2)" />
    </body>
</html>
The cache.manifest looks like this:
CACHE MANIFEST
song01.mp3
song02.mp3
and is properly returned from Apache as "text/cache-manifest" by adding
AddType text/cache-manifest manifest
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)"
Playing song2.mp3:
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)"
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/2011:12:49:13 +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/2011:12:49:13 +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)"
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 clear the cache in the portal browser

Hello Experts,
Iam unable to clear the cache in the portal. I tried clearing the Navigation cache , PRT cache,PCD cache,Database cache,UME cache.
The senario is in the browser if iam logging with some user X , he should see only 1,2,3 countries, and if i logg off and again logg in the same browser with different user he is seeing same 1,2,3 countries unlike he should see 4,5 countries.
But if iam opening in different browser iam getting the correct one with cache cleared.
I want to acheive this in the same browser.
Qucik help in solving out this cache problem is appreciable.
Regrds,
Manasa.

There is one more important cache: the HTTP Provider Service cache (in VA).
To find out why the browser is showing the same languages, analyze what the server is sending to the browser with HTTPWatch or Firebug and look at the cache flag. Also check what is the iView cache parameter? Is it user, session, shared or none?
How do you do the logoff? The best thing is to make sure that the HTTP Session is killed. If not, the portal may send data that is cached for the HTTP Session to the browser. When you open a new browser, you will also open a new HTTP Session. That could be the cause why it is working with a new browser instance.
br,
Tobias

In order to take advantage of the iPhone trade in, do I need to have met my upgrade eldigbility date, or do I just need to re-sign up for a new 2 year plan with the new iPhone 6?

In order to take advantage of the iPhone trade in, do I need to have met my upgrade eldigbility date, or do I just need to re-sign up for a new 2 year plan with the new iPhone 6?

thanks, a HUGE suggestion for you: Please add that to the restrictions of the trade-in details online, it mentions that nowhere and is VERY deceptive. Since at least 90% of 5c and 5s users are under a 2 year contract and both phones have been out just a year, there will be a majority of bitter customers who fell for the ad and will be taking advantage of the buy out options the other carriers are offering.

Does the Flash Player (Win7 / IE 9+) cache content outside of the browser?

I have encountered a technical issue using Flash (CC) content in Captivate 7. I am distributing the content to a customer with approximately 1000 Windows PC's running IE 9 +. Some of these computers have no issue but a small number experience a problem which prevents them from downloading content after an undetermined point. There is no apparent pattern to identify either a fault in the content or a fault in the workstation build.
The problem looks like this:
The user is able to access the content - sometimes several courses, sometimes only one.
At some point during a course -it will stop playing (failing to load the next page).
The user can close the course and reload - but is always stops in the same place it originally failed.
The user can load previously accessed courses and these work without issue.
The user is unable to load any new courses (previously un-accessed) - resulting in a blank page.
No application events are logged when this occurs so there is little to examine when it occurs. We have anecdotal evidence that the issue can sometimes be resolved by clearing the browser cache - but not always. Also - we have unconfirmed reports that the problem can "resolve itself" after several weeks.
From my perspective it looks like one of the following scenarios is causing the problem:
The Flash Player is caching content in a location other than the browser cache and reaches a limit. The cache is not overwriting content so then fails to download any new content.
The Flash Player experiences a problem which prevents it from downloading content (corrupt files, registry issue, or policy restriction).
We have several other customers who access this content at different sites - and none have reported this specific issue, so we are confident that the delivery mechanism is sound. The customers workstations are generally new machines with plenty of capacity, and they have a 200 Mb leased line connection to the Internet. The customer has assured us they do not use a caching proxy server on site, nor any bandwidth optimisation tools so in theory, the client connection is direct to the Internet. Additionally - the fact that this issue affects isolated workstations suggests the problem lies at the endpoint - not in the transmission path.
Has anyone encountered this type of issue before - or does anyone have any knowledge of Flash Player caching operations?
Regards

IE will roll cache like any other browser. Keep as much as the user allows and start recycling when that gets filled. At no point will IE "fill up" on any single or multiple sites and be unable to download any more content. Downloading is all a browser does and Flash is not excluded from that unlimited party. However if you never remove content properly and continue to download endless content, you could encounter RAM issues. You don't have unlimited RAM so you may be hitting a wall. But as long as you're disposing any content you loaded that you no longer need, that isn't an issue.
You're going to need to install some custom logging if you really want to debug a clients client. The most popular thing a Flash application will do is fail silently and lock up because you did not provide any failsafe measures for various common issues. From common crossdomain policy issues to flaky connections failing in the middle of a download, you need to handle all these situations and act appropriately. If any content is failing to load in Flash you can be sure if you try {} catch () {} you'll be given a top level chance to send out a log notice to yourself. That's of course assuming you have the standard IOErrorEvent, SecurityErrorEvent, etc already in place to also log.
If you had access to the offending machines then opening the developer tools in IE and using the network manager would be the easiest way to see what's going on. If you click to load more content and see no network request, the requesting itself has an issue (could be a million reasons). If you see the request go out then you'll either see it fail in the middle or complete. If it fails you should have code to handle that. If it completes and the app still locks up, you probably have ABC that isn't playing nicely and should be "caught" and logged.
There's just no one way to approach this. Only layers of error handling and logging are your best friends when it comes to debugging this kind of thing.
Personally I've seen clients boast they have XMbit lines and their network is otherwise perfect, when it had old grade (100mbit) eth cables and the little things that schools and large companies tend to overlook in the long run. It's easy to replace a faulty switch or eth card but in-wall cable, not so often.

How to stop the Browser from caching my web pages

Hi There
Can anyone tell how to stop the browser from caching my jsp pages
I am using
<%response.setHeader("Cache-Control","no-cache");
response.setHeader("Pragma","no-cache");
response.setDateHeader ("Expires", 0);
%>
but this does not work anduser is able to go back to the previous page
which i dont want and i want the browser to display the message the page has expired
Help appreciated
Thanks
Mumtaz

response.setHeader("Cache-Control", "no-cache");
response.setHeader("Pragma", "no-cache");
response.setDateHeader("max-age", 0);
response.setDateHeader("Expires", 0);
I have cut paste the code from my jsp which is working. There is one additional line. I do not know if that is the cause but there is no harm in trying that out.
Srinivasan Ranganathan

On a website clicking on highlighted text in blue, the browser should take you to info on that subject. My Firefox opens a blank page and says "search history and bookmarks." How can I make it go to the info highlighted in blue text? Ver 3.6.15

Usually the browser will take the user to info pages when a click on blue text is done. My browser just opens a blank page and has "search history and bookmarks and then just sits there. I can change that so it will do nothing and the message is "type a web address". It used to work fine. How can I fix this.

Start Firefox in [[Safe Mode]] to check if one of the add-ons is causing the problem (switch to the DEFAULT theme: Tools > Add-ons > Themes).
* Don't make any changes on the Safe mode start window.
See:
* [[Troubleshooting extensions and themes]]

Take advantage of caching in the browser

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