.NET: Redirect from domain and subfolder to new domain, retaining path and querystring, using httpredirect in web.config

Question

I am trying to setup a domain redirect as part of a domain migration. My caveat is that the site I am redirecting from is in a subfolder of a wider domain. I also need to retain the rest of the path and query string.

I need to setup a redirect in web.config that achieves the following:

• https://www.domain1.com/mysite to https://www.domain2.com
• https://www.domain1.com/mysite/users to https://www.domain2.com/users
• https://www.domain1.com/mysite/api/getData?inputParam=45 to https://www.domain2.com/api/getData?inputParam=45

I've tried:

<httpRedirect enabled="true" destination="https://www.domain1.com$V$Q" httpResponseStatus="Temporary" exactDestination="true" />

but this doesn't remove the "mysite" subfolder. It redirects to https://www.domain2.com/mysite instead of https://www.domain2.com

I've also tried creating a rewrite rule but I cannot figure out a working input and regex.

TIA.

Answer 1

You could go with two rules in URL Rewrite:

<rule name="remove-my-site">
  <match url="^mysite/([/_0-9a-z-]+)"/>
  <action type="Rewrite" url="{R:1}"/>
</rule>
<rule name="domain1-to-domain2">
    <match url=".*" />
    <conditions logicalGrouping="MatchAny">
        <add input="{HTTP_HOST}" pattern="domain1.com" />
    </conditions>
    <action type="Redirect" url="http://www.domain2.com/{R:0}" />
</rule>

You will not make it with httpRedirect. It's for much simple re-writes.

You can also check Application Request Routing documentation for configuring a reverse router with IIS.

What we might have missed is this step:

Enabling Reverse Proxy functionality