How can I redirect only specific subdomains to HTTPS in htaccess?

Question

Say I have 3 subdomains, sub1 , sub2 , and sub3 . I want to redirect all HTTP requests to sub1 and sub2 to use HTTPS, but I do not want sub3 to do any redirects.

I initially had the following when I had just sub1 and sub2 setup, which worked fine, but since I have sub3 now and it cannot be directed to HTTPS, it doesn't work anymore:

RewriteEngine On
RewriteCond %{HTTPS} off
RewriteRule ^(.*)$ https://${HTTP_HOST}%{REQUEST_URI} [L,R=301]

Answer 1

Have a condition to check for domain name:

RewriteEngine On

RewriteCond %{HTTP_HOST} ^(?:www\.)?(?:sub1|sub2)\. [NC]
RewriteCond %{HTTPS} off
RewriteRule ^ https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301,NE]