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Configuring GZip compression
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rgillingham View Drop Down
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Posts: 5 		Post Options Post Options   Quote rgillingham Quote  Post ReplyReply Direct Link To This Post Topic: Configuring GZip compression
    Posted: 16-Feb-2011 at 8:17am

I got it working but I had to modify applicationHost.config in C:\Windows\System32\inetsrv\config

This is what I put

        <httpCompression directory="%SystemDrive%\inetpub\temp\IIS Temporary Compressed Files">
            <scheme name="gzip" dll="%Windir%\system32\inetsrv\gzip.dll" />
            <staticTypes>
                <add mimeType="text/*" enabled="true" />
                <add mimeType="message/*" enabled="true" />
                <add mimeType="application/x-javascript" enabled="true" />
                <add mimeType="application/atom+xml" enabled="true" />
                <add mimeType="application/xaml+xml" enabled="true" />
                <add mimeType="application/soap+msbin1" enabled="true" />
                <add mimeType="*/*" enabled="false" />
            </staticTypes>
            <dynamicTypes>
                <add mimeType="text/*" enabled="true" />
                <add mimeType="message/*" enabled="true" />
                <add mimeType="application/x-javascript" enabled="true" />
                <add mimeType="*/*" enabled="false" />
                <add mimeType="application/soap+msbin1" enabled="true" />
            </dynamicTypes>
        </httpCompression>

Richard
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kimj View Drop Down
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Joined: 09-May-2007
Posts: 1391 		Post Options Post Options   Quote kimj Quote  Post ReplyReply Direct Link To This Post Posted: 14-Feb-2011 at 6:05pm
Message compression should be coming to DevForce Silverlight in release 6.0.9, which is due next month.
 
Although the docs on http compression are a bit confusing, it does work and will compress server responses (which means that saves, and large amounts of data passed into an RPC call, will not be compressed.)  I think the final key to getting compression working is ensuring the mime type is recognized for compression, and in IIS 7 that's done via the applicationHost.config file -- make sure it contains the following under the <dynamicTypes> element:
   <add mimeType="application/soap+msbin1" enabled="true" />
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stephenmcd1 View Drop Down
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Posts: 166 		Post Options Post Options   Quote stephenmcd1 Quote  Post ReplyReply Direct Link To This Post Posted: 14-Feb-2011 at 5:17pm

I've been trying to get gzip compression working as well.  I've tried all the things listed above, but I seem to be in the same boat as rgillingham (that is, I haven't gotten anything working).

Do you expect compression to make it into a soon release of Dev Force or is it just a low priority feature that may come someday.  If the feature is still a ways off, I'll spend more time trying to get it working.
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ting View Drop Down
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Posts: 427 		Post Options Post Options   Quote ting Quote  Post ReplyReply Direct Link To This Post Posted: 08-Feb-2011 at 3:23pm
Yes, we have confirmed that this works, but IIS can be troublesome to debug when it doesn't. We are planning to implement this so that compression happens automatically in DevForce Silverlight, but for now you have to configure IIS.

Your configuration looks ok, but you may need to place it in the ApplicationHost.config file instead of the web.config.

These links may also be helpful to you or others:

For IIS 7:

For IIS 6:
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rgillingham View Drop Down
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Posts: 5 		Post Options Post Options   Quote rgillingham Quote  Post ReplyReply Direct Link To This Post Posted: 08-Feb-2011 at 12:06am
Hello again
 
THanks for the information.  I've now enabled dynamic compression as described but still don't see gzip output in fiddler.  Have you tried this out to confirm it works.?  Do you think my web.config entry is correct?  Is there a DevForce way to configure this ?
 
Richard
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IdeaBlade
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Posts: 427 		Post Options Post Options   Quote ting Quote  Post ReplyReply Direct Link To This Post Posted: 07-Feb-2011 at 3:39pm
My IT guy says Dynamic Content Compression is turned off by default in Windows. You can check this (on Windows 7) by going to:
Control Panel ->
Programs and Features ->
Turn Windows features on or off (on the left panel) ->
Internet Information Services ->
World Wide Web Services ->
Performance Features ->
Dynamic Content Compression 

Make sure that Dynamic Content Compression is checked:




You can confirm this setting is correct inside IIS Manager by double clicking the Compression module for the website and seeing that Enable dynamic content compression is checked and not grayed out:
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rgillingham View Drop Down
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Posts: 5 		Post Options Post Options   Quote rgillingham Quote  Post ReplyReply Direct Link To This Post Posted: 07-Feb-2011 at 12:45pm
Hi

I added this to web.config

<system.webServer>
  <httpCompression directory="%SystemDrive%\inetpub\
temp\IIS Temporary Compressed Files">
    <scheme name="gzip" dll="%Windir%\system32\inetsrv\gzip.dll"/>
    <dynamicTypes>
      <add mimeType="text/*" enabled="true"/>
      <add mimeType="message/*" enabled="true"/>
      <add mimeType="application/javascript" enabled="true"/>
      <add mimeType="application/soap+msbin1" enabled="true"/>
      <add mimeType="*/*" enabled="false"/>
    </dynamicTypes>
    <staticTypes>
      <add mimeType="text/*" enabled="true"/>
      <add mimeType="message/*" enabled="true"/>
      <add mimeType="application/javascript" enabled="true"/>
      <add mimeType="*/*" enabled="false"/>
      <add mimeType="application/soap+msbin1" enabled="true"/>
    </staticTypes>
  </httpCompression>
  <urlCompression doStaticCompression="true" doDynamicCompression="true"/>
</system.webServer>

It didn't make any difference - the content type being returned is application/soap+msbin1 according to Fiddler

Richard
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IdeaBlade
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Posts: 427 		Post Options Post Options   Quote ting Quote  Post ReplyReply Direct Link To This Post Posted: 07-Feb-2011 at 12:03pm
We have an open feature request to enable compression by default for DevForce Silverlight applications. (It is already enabled for WPF/WinForms apps, but Silverlight uses a different .NET runtime CLR.)

Until then, you can manually turn on compression in IIS for your application. This is one link that shows how to do it for IIS 7:

Let us know if that works for you.
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rgillingham View Drop Down
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Posts: 5 		Post Options Post Options   Quote rgillingham Quote  Post ReplyReply Direct Link To This Post Posted: 04-Feb-2011 at 3:41am
Hi

We have a simple silverlight devforce 2010 application.  We have just used the default configuration out of the box and hosting under IIS.  Using Fiddler we are seeing that a query we are executing is returning 460K back to the silverlight client uncompressed.  It is telling us that this would reduce to 39K using gzip compression.

What are the simple steps to configuring devforce to use gzip compression - there is some informaiton on the Wiki but we can't see how to apply this - or not seeing any effects.

Thanks in advance

Richard
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