Redirect non SSL (non HTTPS) to SSL (HTTPS)

The following goes in .htaccess:

RewriteEngine On
RewriteCond %{SERVER_PORT} ^80$
RewriteCond %{HTTP_HOST} ^supernova\.droidzone\.in [NC]
RewriteRule .? https://supernova.droidzone.in%{REQUEST_URI} [R=301,L]

RewriteEngine On
RewriteCond %{SERVER_PORT} ^80$
RewriteCond %{HTTP_HOST} ^droidzone\.in [NC]
RewriteRule .? https://droidzone.in%{REQUEST_URI} [R=301,L]