I'm working on a website that's using IIS 7's URL rewriting feature to do a permanent redirect from example.com to www.example.com, as well as rewrites from similar domain names to
the "main" one, such as from www.examples.com to www.example.com.
This rewrite rule - shown below - has worked well for sometime now. However, we recently added HTTPS support and noticed that if users visit one of
the URLs to be rewritten to www.example.com then HTTPS is dropped. For instance, if a user visits https://example.com they get redirected to http://www.example.com, whereas we would like them to be sent to https://www.example.com.
Here is
the rewrite rule of interest (in Web.config):
<rule name="Canonical Host Name" stopProcessing="true">
<match url="(.*)" />
<conditions logicalGrouping="MatchAny">
<add input="{HTTP_HOST}" pattern="^example\.com$" />
<add input="{HTTP_HOST}" pattern="^(www\.)?example\.net$" />
<add input="{HTTP_HOST}" pattern="^(www\.)?example\.info$" />
<add input="{HTTP_HOST}" pattern="^(www\.)?examples\.com$" />
</conditions>
<action type="Redirect" url="http://www.example.com/{R:1}" redirectType="Permanent" />
</rule>
As you can see,
the action element's url attribute points directly to http://, so I get why https://example.com is redirected to http://www.example.com. My question is, how do I fix this? I tried (naively) to just drop
the http:// part from
the url attribute, but that didn't work.
Thanks!
