Apache Redirect to Secure Link
If you have a directory that you want to force users into an SSL connection, the easiest way is to use a .htaccess file if your host allows it. The following will force any page to redirect to https:// if they aren’t on it already.
RewriteEngine On
RewriteCond %{HTTPS} off
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI}
RewriteCond %{HTTPS} off
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI}
If you want to exclude a directory or filename specifically, then just add in another rewrite condition as shown below.
RewriteEngine On
RewriteCond %{HTTPS} off
RewriteCond %{REQUEST_URI} !^/.*FullOrPartOfFileNameOrDirectoryHere.* [NC]
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI}
RewriteCond %{HTTPS} off
RewriteCond %{REQUEST_URI} !^/.*FullOrPartOfFileNameOrDirectoryHere.* [NC]
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI}