My site has a normal SSL installed and these are the changes I made in .htaccess
RewriteEngine On
RewriteCond %{HTTPS} off
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI}
RewriteCond %{HTTP_HOST} !=blog.mysite.com
But I want https://blog.mysite.com to redirect to http://blog.mysite.com