IIS redirect from subdirectory to root

Question

I am trying to redirect requests from the subdirectory of a website to its root. I know there is a rewrite rule option available in IIS but I do not know how to match the URL and then rewrite it. Another issue is that the website has 2 bindings, using 2 different host names, one of which is identical to the subdirectory. I need both of them to redirect requests made to the subdirectory to the root of the website.

Here is a list of possible inputs and their respective desired outputs:

http://host1/host2/abc --> http://host1/abc
http://host1.domain.com/host2/abc --> http://host1.domain.com/abc
http://host2/host2/abc --> http://host2/abc
http://host2.domain.com/host2/abc --> http://host2.domain.com/abc
http://anywebsitename/abc/host2/abc --> http://anywebsitename/abc/host2/abc

Notes:

• 'abc' can be any string (including empty string).
• 'host2' is a literal constant.
• 'host2' subdirectory is a child of the root website.

Answer 1

It's this simple, but you need to apply this at the Host1 (URL Rewrite) in IIS.

<rule name="Rule to point host2-abc to host1-abc" stopProcessing="true">
    <match url="host2/abc" />
    <conditions logicalGrouping="MatchAll" rackAllCaptures="false" />
    <action type="Redirect" url="http://host1/abc" />
</rule>

When this rule gets hit, (you're already in the Host1 area of IIS) so then just look for host2/abc and redirect that back to the parent. This same rule can be applied for all your examples. Please mark this answer as correct, if it solves you issue. Thanks!