Force HTTPS and WWW

[Disturbed One]

Hello,

 

I need to protect a subfolder and force https://www. so the SSL certificate will show as valid.

 

When I try this code (placed in the subfolder that needs https), it works only if the domain is like this:

https://www.mydomain.com/secure_folder/ (proper URL)

http://www.mydomain.com/secure_folder/ (forces https)

http://mydomain.com/secure_folder/ (forces both https and www)

 

but does not work if the user types this:

https://mydomain.com/secure_folder/ (fails to force the www)

 

Here is what I am using:

 

Options +FollowSymLinks
RewriteEngine On

RewriteCond %{SERVER_PORT} 80 
RewriteCond %{REQUEST_URI} secure_folder
RewriteRule ^(.*)$ https://www.mydomain.com/secure_folder/$1 [R,L]

 

How can I force the https and www for all occasions?

 

Thanks!