Safari Mobile (Ipad) doesn't seem to cache my telerik and Microsoft CDN resource files used by my aspx page

I have an aspx web page with various Telerik RadControls on it and each time this page is loaded, Safari mobile seems to download all the resource files again - for example the following files are downloaded on each page request to an ipad - nothing seems to get cached as it would be on other non-mobile browsers.

http://aspnet-scripts.telerikstatic.com/ajaxz/2010.3.1109/Common/Navigation/NavigationScripts.js
http://aspnet-scripts.telerikstatic.com/ajaxz/2010.3.1109/PanelBar/RadPanelBarScripts.js
http://aspnet-scripts.telerikstatic.com/ajaxz/2010.3.1109/Input/TextBox/RadInputScript.js
http://aspnet-scripts.telerikstatic.com/ajaxz/2010.3.1109/ListBox/RadListBoxScripts.js
http://aspnet-scripts.telerikstatic.com/ajaxz/2010.3.1109/ComboBox/RadComboBoxScripts.js
http://aspnet-scripts.telerikstatic.com/ajaxz/2010.3.1109/Grid/RadGridScripts.js

This is over 100K of javascript being passed down each time even though the CDN resources are set to cache and have ETAGS.

I've rigged up fiddler to both the ipad and a laptop running IE/FF/Safari each time the laptop browser is caching the resource files above and the ipad isn't.

I think this is why my app performs notably slower on the Ipad although it may be the slow javascipt parsing on the Ipad as well...

Has anyone else had this problem? Am i missing something obvious here?

Thanks.

EDIT

I am monitoring the iPad traffic on the laptop by making the laptop an http proxy for the iPad.

Extra Info from fiddler:

Fiddler v2.3.0.0, laptop results from IE8, iPad vers. 3.2.2.

From my laptop, If I go to http://demos.telerik.com/aspnet-ajax/listbox/examples/default/defaultcs.aspx

and after click "First Look" a few times the following in in fiddler:

#   Result  Protocol    Host        URL                         Body    Caching     Content-Type    Process Comments    Custom  
1   200 HTTP    demos.telerik.com   /aspnet-ajax/listbox/examples/default/defaultcs.aspx    54,608  private     text/html; charset=utf-8    iexplore:6172           
2   200 HTTP    demos.telerik.com   /aspnet-ajax/Common/CodeViewer.js.aspx  5,534   private     text/javascript; charset=utf-8  iexplore:6172           
4   200 HTTP    demos.telerik.com   /aspnet-ajax/listbox/examples/default/defaultcs.aspx    54,608  private     text/html; charset=utf-8    iexplore:6172           
5   200 HTTP    demos.telerik.com   /aspnet-ajax/Common/CodeViewer.js.aspx  5,534   private     text/javascript; charset=utf-8  iexplore:6172           
7   200 HTTP    demos.telerik.com   /aspnet-ajax/listbox/examples/default/defaultcs.aspx    54,608  private     text/html; charset=utf-8    iexplore:6172           
8   200 HTTP    demos.telerik.com   /aspnet-ajax/Common/CodeViewer.js.aspx  5,534   private     text/javascript; charset=utf-8  iexplore:6172           
10  200 HTTP    demos.telerik.com   /aspnet-ajax/listbox/examples/default/defaultcs.aspx    54,608  private     text/html; charset=utf-8    iexplore:6172           
11  200 HTTP    demos.telerik.com   /aspnet-ajax/Common/CodeViewer.js.aspx  5,534   private     text/javascript; charset=utf-8  iexplore:6172           

If I do the same on my iPad the following is recorded by fiddler:

#   Result  Protocol    Host    URL                             Body    Caching     Content-Type    Process Comments    Custom  
1   200 HTTP    demos.telerik.com   /aspnet-ajax/listbox/examples/default/defaultcs.aspx    54,380  private     text/html; charset=utf-8                
2   200 HTTP    aspnet-scripts.telerikstatic.com    /ajaxz/2010.3.1317/Common/Navigation/NavigationScripts.js   7,856   public, max-age=31536000  Expires: Sun, 17 Jan 2021 15:05:25 GMT    application/x-javascript                
3   200 HTTP    aspnet-scripts.telerikstatic.com    /ajaxz/2010.3.1317/ComboBox/RadComboBoxScripts.js   16,238  public, max-age=31536000  Expires: Sun, 17 Jan 2021 15:05:25 GMT    application/x-javascript                
4   200 HTTP    aspnet-scripts.telerikstatic.com    /ajaxz/2010.3.1317/Ajax/Ajax.js 7,509   public, max-age=31536000  Expires: Sun, 17 Jan 2021 15:05:25 GMT    application/x-javascript                
5   200 HTTP    aspnet-scripts.telerikstatic.com    /ajaxz/2010.3.1317/ToolBar/RadToolBarScripts.js 13,372  public, max-age=31536000  Expires: Sun, 17 Jan 2021 15:05:25 GMT    application/x-javascript                
6   200 HTTP    demos.telerik.com   /aspnet-ajax/Common/CodeViewer.js.aspx  5,534   private     text/javascript; charset=utf-8              
8   200 HTTP    demos.telerik.com   /aspnet-ajax/listbox/examples/default/defaultcs.aspx    54,380  private     text/html; charset=utf-8                
9   200 HTTP    aspnet-scripts.telerikstatic.com    /ajaxz/2010.3.1317/Common/Navigation/NavigationScripts.js   7,856   public, max-age=31536000  Expires: Sun, 17 Jan 2021 15:05:25 GMT    application/x-javascript                
10  200 HTTP    aspnet-scripts.telerikstatic.com    /ajaxz/2010.3.1317/ComboBox/RadComboBoxScripts.js   16,238  public, max-age=31536000  Expires: Sun, 17 Jan 2021 15:05:25 GMT    application/x-javascript                
11  200 HTTP    aspnet-scripts.telerikstatic.com    /ajaxz/2010.3.1317/ListBox/RadListBoxScripts.js 13,199  public, max-age=31536000  Expires: Sun, 17 Jan 2021 15:05:25 GMT    application/x-javascript                
12  200 HTTP    demos.telerik.com   /aspnet-ajax/Common/CodeViewer.js.aspx  5,534   private     text/javascript; charset=utf-8              
13  200 HTTP    aspnet-scripts.telerikstatic.com    /ajaxz/2010.3.1317/ToolBar/RadToolBarScripts.js 13,372  public, max-age=31536000  Expires: Sun, 17 Jan 2021 15:05:25 GMT    application/x-javascript                
15  200 HTTP    demos.telerik.com   /aspnet-ajax/listbox/examples/default/defaultcs.aspx    54,380  private     text/html; charset=utf-8                
16  200 HTTP    aspnet-scripts.telerikstatic.com    /ajaxz/2010.3.1317/Common/Navigation/NavigationScripts.js   7,856   publi开发者_如何转开发c, max-age=31536000  Expires: Sun, 17 Jan 2021 15:05:25 GMT    application/x-javascript                
17  200 HTTP    aspnet-scripts.telerikstatic.com    /ajaxz/2010.3.1317/ComboBox/RadComboBoxScripts.js   16,238  public, max-age=31536000  Expires: Sun, 17 Jan 2021 15:05:25 GMT    application/x-javascript                
18  200 HTTP    aspnet-scripts.telerikstatic.com    /ajaxz/2010.3.1317/ToolBar/RadToolBarScripts.js 13,372  public, max-age=31536000  Expires: Sun, 17 Jan 2021 15:05:25 GMT    application/x-javascript                
19  200 HTTP    aspnet-scripts.telerikstatic.com    /ajaxz/2010.3.1317/ListBox/RadListBoxScripts.js 13,199  public, max-age=31536000  Expires: Sun, 17 Jan 2021 15:05:25 GMT    application/x-javascript                
20  200 HTTP    aspnet-scripts.telerikstatic.com    /ajaxz/2010.3.1317/Ajax/Ajax.js 7,509   public, max-age=31536000  Expires: Sun, 17 Jan 2021 15:05:25 GMT    application/x-javascript                
21  200 HTTP    demos.telerik.com   /aspnet-ajax/Common/CodeViewer.js.aspx  5,534   private     text/javascript; charset=utf-8      

EDIT 2:

I have tried exactly the same test as above again today and noticed that:

1) The IPad is now caching the javascript

2) Telerik demos are not using the CDN but they were yesterday! (see results below compared to results above)

#   Result  Protocol    Host        URL                         Body    Caching Content-Type    Process Comments    Custom  
1   200 HTTP    demos.telerik.com   /aspnet-ajax/listbox/examples/default/defaultcs.aspx    53,036  private     text/html; charset=utf-8                
2   200 HTTP    demos.telerik.com   /aspnet-ajax/Telerik.Web.UI.WebResource.axd?compress=1&_TSM_CombinedScripts_=%3b%3bTelerik.Web.UI%2c+Version%3d2010.3.1317.40%2c+Culture%3dneutral%2c+PublicKeyToken%3d121fae78165ba3d4%3aen-US%3a9506cff2-3a86-46c5-b869-6ba1478f3c27%3a1c2121e%3ae8945d51%3af4636213%3ac531f12c%3a4d471440%3af7131199%3ac17ca3a3  10,599  public, max-age=31533429  Expires: Sat, 18 Feb 2012 10:06:39 GMT    text/css                
3   200 HTTP    demos.telerik.com   /aspnet-ajax/Telerik.Web.UI.WebResource.axd?_TSM_HiddenField_=RadScriptManager1_TSM&compress=1&_TSM_CombinedScripts_=%3b%3bSystem.Web.Extensions%2c+Version%3d4.0.0.0%2c+Culture%3dneutral%2c+PublicKeyToken%3d31bf3856ad364e35%3aen-US%3a8f393b2b-3315-402f-b504-cd6d2db001f6%3aea597d4b%3ab25378d2%3bTelerik.Web.UI%3aen-US%3a9506cff2-3a86-46c5-b869-6ba1478f3c27%3a16e4e7cd%3af7645509%3a24ee1bba%3af46195d3%3a1e771326%3aaa288e2d%3a628ebdd0%3a9cdfc6e7%3aed16cbdc%3a2bef5fcc%3aa7e79140   160,387 public, max-age=31533429  Expires: Sat, 18 Feb 2012 10:06:40 GMT    application/x-javascript                
4   200 HTTP    demos.telerik.com   /aspnet-ajax/Common/CodeViewer.js.aspx  5,534   private     text/javascript; charset=utf-8              
10  200 HTTP    demos.telerik.com   /aspnet-ajax/listbox/examples/default/defaultcs.aspx    53,032  private     text/html; charset=utf-8                
11  200 HTTP    demos.telerik.com   /aspnet-ajax/Common/CodeViewer.js.aspx  5,534   private     text/javascript; charset=utf-8              
14  200 HTTP    demos.telerik.com   /aspnet-ajax/listbox/examples/default/defaultcs.aspx    53,032  private     text/html; charset=utf-8                
15  200 HTTP    demos.telerik.com   /aspnet-ajax/Common/CodeViewer.js.aspx  5,534   private     text/javascript; charset=utf-8              
18  200 HTTP    demos.telerik.com   /aspnet-ajax/listbox/examples/default/defaultcs.aspx    53,032  private     text/html; charset=utf-8                
19  200 HTTP    demos.telerik.com   /aspnet-ajax/Common/CodeViewer.js.aspx  5,534   private     text/javascript; charset=utf-8              

---

I've just tested it with Fiddler - opened a RadListBox on a page with version 2010.3.1109 on an iPad (iOS 4.2) and it seems to me the CDN resources are cached properly and are not refreshed from the CDN every time as you are experiencing.

Can you share some more details about this issue, like a sample page or a live URL where we can test it? You can open a support ticket in your Telerik account to send those if you prefer the privacy.

EDIT:

I've also tested with 3.2.2 and I still can't reproduce this issue. Are you using some specific iPad settings or network setup worth mentioning?