IIS 7.5 redirect certain requests to other server using ip address

Question

Here is a problem I have been struggling with for a while.
I host a website with the address www.mywebsite.com in server I but the images of the site come from server II (ip: 1.2.3.4) so if there are requests such as www.mywebsite.com/images/123.jpg I would like to redirect them to the image server(Server II).

I would like that requests that contain (.*jpg.*) regex will redirect to Server II.

1. Using Url rewrite I added a rule:

   <rewrite>
           <rules>
               <rule name="Ignore images requests" enabled="true" stopProcessing="true">
                   <match url="(.*jpg.*)" />
                   <action type="Rewrite" url="https://www.petfinder.com/wp-content/uploads/2012/11/91615172-find-a-lump-on-cats-skin-632x475.jpg" />
               </rule>
           </rules>
       </rewrite> 
   

It rewrites the request to a static image as you can see, how can I define it to go to 1.2.3.4/images/imagename.jpg?

The best solution would be if I could just ignore requests containing jpg via my host file, is there a way to that?

Answer 1

You redirect rule should be like that:

<rule name="image redirect" stopProcessing="true">
    <match url=".*" />
    <conditions logicalGrouping="MatchAll">
        <add input="{REQUEST_FILENAME}" pattern="(.*?)\.jpg$" />
        <add input="{REQUEST_FILENAME}" matchType="IsFile" />
    </conditions>
  <action type="Redirect" url="http://1.2.3.4/{R:1}" appendQueryString="false" />                           
</rule>

It will redirect all requests to files with .jpg extension to 1.2.3.4 domain For example:

http://www.mywebsite.com/dog-1210559_960_720.jpg to http://1.2.3.4/dog-1210559_960_720.jpg

http://www.mywebsite.com/UserFiles/Entities/TopBanners/top50161616‌​_586.jpg to http://1.2.3.4/UserFiles/Entities/TopBanners/top50161616‌​_586.jpg