Until few month ago i've been using IIS 6 where i could add different Default Documents to each websites which are physically same directory. Since II7 which adds Default Document value to web config i couldn't use such technique as web.config was changed for all the directory.
So I've found simple solution with rewrite
module to change Default Document for each domain
<defaultDocument enabled="false" />
<rewrite>
<rewriteMaps>
<rewriteMap name="ResolveDefaultDocForHost">
<add key="site1.com" value="Default1.aspx" />
<add key="site2.com" value="Default2.aspx" />
</rewriteMap>
</rewriteMaps>
<rules>
<rule name="DefaultDoc Redirect If No Trailing Slash" stopProcessing="true">
<match url=".*[^/]$" />
<conditions>
<add input="{REQUEST_FILENAME}" matchType="IsDirectory" />
</conditions>
<action type="Redirect" url="{R:0}/" />
</rule>
<rule name="PerHostDefaultDocSlash" stopProcessing="true">
<match url="$|.*/$" />
<conditions>
<add input="{REQUEST_FILENAME}" matchType="IsDirectory" />
<add input="{ResolveDefaultDocForHost:{HTTP_HOST}}" pattern="(.+)" />
</conditions>
<action type="Rewrite" url="{R:0}{C:1}" appendQueryString="true" />
</rule>
</rules>
</rewrite>
Now i've got two other issues.
first of all i can't use canonical url rewrite, if i set one then site1.com and site2.com redirected to www.site1.com instead of having www. for each.
second problem is that there is a directory within site1' and site2' physical directory called members in which Default.aspx is always a Default Document doesn't matter which domain name was used. It doesn't work as well.
Please help me with this issue because i've never thought i will get such problem with supposed to be better IIS7...
