HTTP Strict Transport Security OLS

[Kurogane]

How to enable HTTP Strict Transport Security in OpenLiteSpeed.

I'm trying to enable by domain, tried to add via .htaccess but not work.

 

[scriptkitty]

Add extraHeaders via the DirectAdmin Admin Panel -> Admin Settings -> Customize Httpd Configurations -> openlitespeed.conf
OLS wiki suggests adding these to the Context section:

context / {
extraHeaders Strict-Transport-Security: max-age=31536000; includeSubDomains; preload
}