强制对主域而不是子域使用HTTPS

Question

I have my site and several sub-domains on a c-Panel server and would like to achieve the following functionality:

Force HTTPS and WWW for all traffic to example.com for all traffic to my main site -> https://www.example.com/what-ever-page-or-directory

I also have a sub.example.com as sub-domain setup through c-Panel (not re-directed), whose document root is /public_html/sub and this sub-domain doesn't have an SSL. I tried putting in the following HTACCESS code:

RewriteEngine On
RewriteCond %{SERVER_PORT} 80
RewriteRule ^(.*)$ https://www.example.com/$1 [R,L]

which works for redirecting all traffic on the main site, BUT when I try to access my sub-domain, http://sub.example.com , I get a redirect error saying This webpage has a redirect loop .

Thanks in advance for any help! I found similar posts but nothing dealing with my specific question. I'm not great with HTACCESS directives and the redirect error is throwing me for a loop. Thanks again!

Answer 1

Try :

RewriteEngine On

#Exclude subdomain
RewriteCond %{HTTP_HOST} !^sub.domain.com$
RewriteCond %{SERVER_PORT} 80
RewriteRule ^(.*)$ https://www.example.com/$1 [R,L]

To exclude multiple subdomains you can use multiple RewriteConds :

RewriteCond %{HTTP_HOST} !^foo.domain.com$
RewriteCond %{HTTP_HOST} !^bar.domain.com$

or just 1 liner pattern :

 RewriteCond %{HTTP_HOST} !^(foo|bar).domain.com$