CODEWITHSUNDEEP
iis-7url-rewriting
peter3
peter3

Reputation: 1074

Can't get static redirects to work with IIS Url Rewrite 2.0

Running the following IIS URL Rewrite setup locally and can't get it to work (from web.config):

        <rewrite>
        <rewriteMaps>
            <rewriteMap name="StaticRedirects">
                <add key="^tvb/" value="/tv/" />
            </rewriteMap>
        </rewriteMaps>
        <rules>
            <rule name="StaticRedirectsRule" stopProcessing="true">
                <match url=".*" />
                <conditions>
                    <add input="{StaticRedirects: {REQUEST_URI}}" matchType="Pattern" pattern="(.+)" ignoreCase="true" negate="false" />
                </conditions>
                <action type="Redirect" url="{C:1}" appendQueryString="true" />
            </rule>
        </rules>
    </rewrite>

Trying to open the url http://localhost/tvb/ or http://localhost/tvb/?a=b returns a 404 error instead of redirecting me to http://localhost/tv (with or without query string).

I've found similar posts here on stackoverflow and I've tried what they recommended: recycling the app pool, restarting the IIS service, replacing REQUEST_URI with URL and/or REQUEST_FILENAME but none of these changes made a difference.

Can anyone see where I went wrong?

Upvotes: 1

Views: 4469

Answers (2)

Manikandan
Manikandan

Reputation: 78

I had the same problem, and replacing REQUEST_URI with PATH_INFO fixed the issues.

Here is the link https://forums.iis.net/post/1883056.aspx

Reasoning: 'This is because REQUEST_URI contains the entire requested URL that includes the query string. Since the keys in the rewrite map do not contain the query string the map lookup fails.'

Upvotes: 0

peter3
peter3

Reputation: 1074

Well, I managed to find a solution for this myself, so here's what I did:

First, it seems rewriteMap does not support regular expressions, so this doesn't work:

<add key="^tvb/" value="/tv/" />

instead, it has to be like this:

<add key="/tvb/" value="/tv/" />

Also, it seems the IIS7 REQUEST_URI variable has changed behavior since the Url Rewrite 2.0 module (and documentation) was released.

Previously, REQUEST_URI only included the path of the url, without domain and query string.

Now, apparently REQUEST_URI in IIS7 works like the one in Apache, i.e. it includes the query string as well, so no wonder this part doesn't work:

<add input="{StaticRedirects: {REQUEST_URI}}" ... />

instead I had to change it to this:

<add input="{StaticRedirects: {SCRIPT_NAME}}" ... />

And now the redirects work, both with and without query strings!

Hope this helps someone.

Just found this on serverfault: IIS Rewrite, rewrite maps and query strings.

Upvotes: 5

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