OutputCompression doesn't work

[Dirk Eberhardt]

Good Morning,
if I set the "OutputCompression" in the RadScriptManager Control to "AutoDetect" or "Forced" there is no different in the size of the "Telerik.Web.UI.WebResource.axd" File (about 500kb!!!).

I have everytime the same Filesize of 500kb, what ever which value ("Disabled", "AutoDetect" or "Forced") I use.

My System:
Win 2008 Server
IIS 7
Telerik 2009.2.701.35

Any ideas how to fix that? Must I configure something else to enable the OutputCompression?

Thanks in advance.

Regards Dirk

[Dirk Eberhardt]

After a IIS reboot it work's.

[Dirk Eberhardt]

Hello,
it seem like it still not work.

I tested it on our Inhouse Webserver, there it works. (Telerik.Web.UI.WebResource.axd Filesize of about 130kb).

On the server of our customer the compression doesn't work. It's everytime the same Filesize of about 500kb, never mind which compression mode ("Disabled", "AutoDetect" or "Forced").

In the include path of WebResource.axd file the compress parameter is okay!!
Url: "http://www.MYWEBSITE.com/Telerik.Web.UI.WebResource.axd?_TSM_HiddenField_=ctl00_ScriptManager1_HiddenField&compress=1&..."

The Website is excatly the same, also the Web.config File and the Master Template where the ScriptManager is included.

Have I to configure something else? In the IIS maybe?

EDIT: I have the same problem on another website. If I call the site from our development server (RadControls installed on this Server) over LAN, the compression works fine. If I call the same site from a webserver in the internet (only "Telerik.Web.UI.dll" in the BIN directory) over WAN the compression doesn't work!!??


Thanks in advance for your Help!

Regards
Dirk

[T. Tsonev]

Hello Dirk,

I've replied to your support ticket, but I'm also posting the answer here for reference:

We have indeed identified an issue with the RadScriptManager handler that can lead to such behavior.
The bug is fixed in the official Q3 release, but if you can't upgrade at the moment you can also use the workaround from this forum:

http://www.telerik.com/community/forums/aspnet-ajax/scriptmanager-and-stylesheetmanager/the-telerik-web-ui-webresource-axd-handler-can-return-uncompressed-content-for-browsers-that-accept-gzip-encoding-and-vice-versa.aspx

We apologize for any inconvenience caused.

Regards,
Tsvetomir Tsonev
the Telerik team

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[Yvonne Patakidou]

Hello,

I have the same problem with Dirk. I have the latest release of Telerik (2010) and I use as  web server  windows 2008 (iis 7) and client IE 8 windows xp or IE 7 windows 2003 . The compression of scripts  (Telerik.Web.UI.WebResource.axd?) is not working.Everytime the same Filesize of about 1MB, never mind which compression mode ("Disabled", "AutoDetect" or "Forced') . In Firefox the compressed file size is about 200kb.
And another issue that I noticed: I have a page with many kind of controls (tabstrip,multipage, windowmanager,editor,textboxes,dropdownlists,buttons,dates,etc) . Many of them are not visible  some other  are loaded dynamically every time. When I open the page for the first time I understand that it is loading the scripts for the first time, so I have to wait, but when I reopen the page with different parameters , and it loads dynamically some checkboxes,textboxes, the browser downloads again the script file is saved in temporary files, so I have to wait again...So in temporary files I have 3-4 files with the same size and name and url ( ie
 http://wssrv/Adminnew/Telerik.Web.UI.WebResource.axd?_TSM_HiddenField_=ctl00_RadScriptManager1_TSM&compress=2&_TSM_CombinedScripts_=%3b%3bSystem.Web.Extensions%2c+Version%3d3.5.0.0%2c+Culture%3dneutral%2c+PublicKeyToken%3d31bf3856ad364e35%3aen-US%3a0d787d5c-3903-4814-ad72-296cea810318%3aea597d4b%3ab25378d2%3bTelerik.Web.UI%2c+Version%3d2010.1.309.35%2c+Culture%3dneutral%2c+PublicKeyToken%3d121fae78165ba3d4%3aen-US%3a30afb63f-e6ac-41db-9851-11879733de0a%3a16e4e7cd%3aed16cbdc%3a874f8ea2%3af7645509%3a24ee1bba%3a19620875%3a33108d14%3abd8f85e4%3a30f1f089%3ae330518b%3a1e771326%3a8e6f0d33%3a6a6d718d%3aaa288e2d%3ab7778d6c%3ae085fe68%3a58366029%3ac08e9f8a%3a1bb784d4 )

I use in maste page the below code

     <telerik:RadScriptManager ID="RadScriptManager1" Runat="server" ScriptMode="Release" EnableScriptCombine="true" OutputCompression="Forced">
     </telerik:RadScriptManager>
    <telerik:RadStyleSheetManager  ID="RadStyleSheetManager1" runat="server" EnableStyleSheetCombine="true" OutputCompression="Forced">
    </telerik:RadStyleSheetManager>

Also I use the radcompression in web.config

   <modules>
      <remove name="ScriptModule" />
      <add name="ScriptModule" preCondition="managedHandler" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
        <add name="RadCompression" type="Telerik.Web.UI.RadCompression" />
    </modules>

Finally, I use the radcompression in viewstate , in the browser file

<browsers>
    <browser refID="Default">
        <controlAdapters>
            <adapter controlType="System.Web.UI.Page" adapterType="Telerik.Web.UI.RadHiddenFieldPageStateCompression" />
            <!--Uncomment the following line to use SessionStateCompression and remove ViewState from the page-->
            <!--<adapter controlType="System.Web.UI.Page" adapterType="Telerik.Web.UI.RadSessionPageStateCompression" />-->
        </controlAdapters>
    </browser>
</browsers>

(If I enable the radsessionpagestatecompression , after a second ajax postback, the viewstate is lost, this is another issue)

and the compression for static files is enabled on iis 7.

So what do you propose?
Thanks in advance
Yvonne

[T. Tsonev]

Hi Yvonne,

Can you, please, record the browser session using FiddlerCap, so we can look into the compression issue.

Every unique combination of controls on the page will produce an unique script. In such scenario it might be better to disable script combining for this particular page. This way individual files will be cached at the price of a higher initial load time.

As for the RadCompression issue, you'll most likely have to increase the session history size. More information here: http://msdn.microsoft.com/en-us/library/ms228249.aspx

Best wishes,
Tsvetomir Tsonev
the Telerik team

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[Yvonne Patakidou]

Hello again,

Thank you for you advise, the disabling script combining for the pages, worked just fine and now the time loading is reduced. About the compression issue we recorded some requests with Fiddler and I ll open a support ticket with attachment.

About the  enabling of  radsessionpagestatecompression , viewstate is lost because telerik controls use frames and modal dialogs windows , so session is confused and viewstate is lost..I read about this in www, the best solution is to save viewstate with a unique id to db  (recommended for web farms) or cache..

Thanks again
Yvonne

[Chad]

Telerik,

My web site is peforming very slow over a dialup connection. It appears that the Telerik.Web.UI.Resouce.axd file is downloaded for each request made to my page. This file is usually over 700K.

Is there anyway I can reduce this file size? I saw in the forum that maybe a bug in the RadScriptManager that does not compress content for browsers that accept compressed formats.  Instead of upgrading to a newer version, someone posted a work around for this by adding the following to the global.asax file. 

Protected

 

Sub Application_PostRequestHandlerExecute(ByVal sender As Object, ByVal e As EventArgs)

 

 

Dim app As HttpApplication = DirectCast(sender, HttpApplication)

 

 

 

If Not app.Request.RawUrl.Contains("Telerik.Web.UI.WebResource.axd") Then

 

 

Return

 

 

End If

 

 

 

Dim cachePolicy As HttpCachePolicy = app.Response.Cache

 

cachePolicy.VaryByHeaders(

"User-Agent") = True

 

 

End Sub

 

I have added this code, but the axd file is still over 700KB when I look in temporary internet files. 

Chad 

[T. Tsonev]

Hi Chad,

The actual compressed size transmitted over the wire will be different with compression applied. The file size will be the same, though, as it's stored uncompressed. You can observe the traffic using tools such as Fiddler.

The Telerik CDN is worth trying in your case too. It uses a globally distributed content delivery network to serve the control resources from end-points that are closer to your customers. You need to have the latest 2009 Q3 release or newer to use it.

I hope this helps.

All the best,
Tsvetomir Tsonev
the Telerik team

[PRATIK]

Where can I find the browser file to add the followig code: Is it not in the web.config?

<browsers>  
 <browser refID="Default">   
   <controlAdapters>  
     <adapter controlType="System.Web.UI.Page" adapterType="Telerik.Web.UI.RadHiddenFieldPageStateCompression" />  
   </controlAdapters>  
 </browser>  
</browsers>

[Helen]

Hi,

You may add such a file to your application trough the Visual Studio templates - see the attached screenshot for details.

Kind regards,
Helen
the Telerik team