URL Rewrite from web.config in Azure Application does not work

Question

I want to redirect my users from "https://mywebsite.azurewebsites.net/Spa/de/#/.." to "https://mywebsite.azurewebsites.net/Spa/en/#/.." using url rewrite in web.config but it is not working. I stay on the "de" url.

The application is an angular web application deployed to azure.

I wrote the following rewrite rule in web.config but the redirect is not working as expected.

<system.webServer>
    <rewrite>
        <rules>
            <rule name="Redirect from de to en" enabled="true" stopProcessing="true">
                <match url="(.*)/Spa/de/(.*)" />
                <action type="Redirect" url="{R:1}/Spa/en/{R:2}" />
            </rule>
        </rules>
    </rewrite>
</system.webServer>

What am I missing?

ThomasArdal · Accepted Answer · 2023-09-06 08:10:34Z

0

I'm not entirely sure, but I think there's a problem with your match. I belive this works:

<system.webServer>
    <rewrite>
        <rules>
            <rule name="Redirect from de to en" enabled="true" stopProcessing="true">
                <match url="^Spa/de/(.*)$" />
                <action type="Redirect" url="/Spa/en/{R:1}" />
            </rule>
        </rules>
    </rewrite>
</system.webServer>

answered Sep 6, 2023 at 8:10

ThomasArdal

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5 Comments

therealwolf Over a year ago

Thanks for your answer. I tried your suggested match expression but it's not working either.

ThomasArdal Over a year ago

Are you sure it's not because of caching then? I tried the rule and it works. Try requesting your URL from the command line and/or disable the cache.

therealwolf Over a year ago

I tried requesting my URL from command line using curl -Ls -I - w %{url_effective} command to get the final url after redirect but it's still not working. I'm not sure what exactly causes the issue. Caching should be disabled.

ThomasArdal Over a year ago

Another thing to try is to match on (.*) and then specify the regex in a condition as shown in the examples here: blog.elmah.io/…. The reverse proxy example shows how to match on URL. You would not need the negate attribute in your case.

therealwolf Over a year ago

This actually did the trick. Thank you very much!

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