I have created url-masking (url-mapping) on my portal. Same php code are running with different urls. My portal link is http://subdomain.domain.in (main-link) and client url is http://www.client-domain.com. I want to redirect client URL HTTP to https using my .htaccess file.
Edit from comment:
RewriteEngine On
RewriteCond %{HTTP_HOST} ^client-domain.in [NC]
RewriteRule ^(.*)$ https://%{SERVER_NAME}%{REQUEST_URI}/$1 [L,R=301]
RewriteCond %{HTTP_HOST} ^mydomain.in [NC]
RewriteRule ^(.*)$ http://%{SERVER_NAME}%{REQUEST_URI}/$1 [L,R=301]
My problem is solved now. I have added this code in .htaccess, and client's url work with HTTPS.
RewriteCond %{HTTPS} off
RewriteCond %{HTTP_HOST} www.client-domain.com [NC]
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI}/$1 [R=301,L]
RewriteCond %{HTTPS} on
RewriteCond %{HTTP_HOST} ^my-domain.in [NC]
RewriteRule ^(.*)$ http://%{SERVER_NAME}%{REQUEST_URI}/$1 [L,R=301]