CODEWITHSUNDEEP
azureurl-rewritingazure-web-app-service
Vova Bilyachat
Vova Bilyachat

Reputation: 19484

IIS rewrite rule is not working in Azure production

I have website with multiple domains and i want them to have different robots.txt I have rule for this so depends on domain request it will return different robots. This is workin beta slot but after deploy to production slot its not working. 

<rule name="robots" patternSyntax="ECMAScript" stopProcessing="true">
          <match url="(.*)" />
          <conditions logicalGrouping="MatchAny">
            <add input="{REQUEST_URI}" pattern="^robots.txt" />
          </conditions>
          <action type="Rewrite" url="https://{HTTP_HOST}/{HTTP_HOST}.robots.txt" />
        </rule>

If i am changing action type to redirect it seems to work because webbrowser redirects and is in stuck with to many redirects (Which make sense.)

Upvotes: 0

Views: 1242

Answers (1)

Bruce Chen
Bruce Chen

Reputation: 18465

As url-rewrite-module-configuration-reference mentioned that the server variable REQUEST_URI can be used to access the entire requested URL path, including the query string. Assuming that the URL for robots.txt is https://<your-hostname-and-port>/robots.txt, then you would get the string /robots.txt as an input via REQUEST_URI.

<rewrite>
  <rules>
    <rule name="robots" patternSyntax="ECMAScript" stopProcessing="true">
      <match url="(.*)" ignoreCase="true"/>
      <conditions logicalGrouping="MatchAny">
        <add input="{REQUEST_URI}" pattern="^/robots.txt" />
      </conditions>
      <action type="Rewrite" url="{HTTP_HOST}.robots.txt"/>
    </rule>
  </rules>
</rewrite>

With the rule above, I could rewrite my URL and get the following result:

Changing the type of the rule action from Rewrite to Redirect, I could get the following result:

Upvotes: 2

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