iis 7 example.com to www.example.com

Question

Hi I know this question has been answered for other methods but in iis 7 how would one redirect all sites to www version. i.e example.com to www.example.com is there a method or would it be done in the same way as iis 6 where you created another site for example.com and then redirected to www version, or is it best to use code to do this in global.asax or module. Thanks

Answer 1

Use the IIS URL Rewrite module. In particular, the exact rule you want is:

<system.webServer>
    <rewrite>
        <rules>
            <rule name="Canonical host name">
                <match url="^(.*)" />
                <conditions>
                    <add input="{HTTP_HOST}" pattern="^www\.example\.com$" negate="true" />
                </conditions>
                <action type="Redirect" url="http://www.example.com/{R:1}" />
            </rule>
        </rules>
    </rewrite>
</system.webServer>