I have tried a zillion variations of .htaccess rewrites and cannot get this to work.
I have a previous HTTPS old-domain.com that I need to forward to new-domain.io. Both are HTTPS but only the new domain has SSL certs on the server. This makes the browser trying to load old-domain.com just spin in the browser.
I already have a DNS forward that works fine ONLY with http, not https. I am thinking that I need to use something like %{HTTP:X-Forwarded-Proto} but not exactly sure how. Nothing has worked so far.
https://old-domain.com AND https://www.old-domain.com
both need to redirect to https://new-domain.io (along with any URI like/something/this.html)
Something like this looks like it should work, but redirects infinitely.
RewriteEngine On
RewriteCond %{HTTP_HOST} ^old-domain\.com$ [OR]
RewriteCond %{HTTP_HOST} ^www\.old-domain\.com$
RewriteRule (.*)$ https://new-domain.io/$1 [R=301,L]
RewriteEngine On
RewriteCond %{HTTPS} on
RewriteRule (.*)$ https://new-domain.io/$1 [R=301,L]
SOLUTION -------- The new domain .htaccess file cannot fix a HTTPS redirected link by itself. There are two ways to correctly fix it.
Remove DNS forwarding at the old domain DNS. Then make sure there are still valid SSL certs AND put a redirect on its .htaccess file to handle the redirects with something like this:
RewriteEngine On
RewriteCond %{HTTP_HOST} (w*)domain.com$ [NC] RewriteRule ^ http://newdomain.com%{REQUEST_URI} [L,R=301]
Leave the DNS forwarding of the old domain and add a new multi-domain SSL cert at the new domain which includes BOTH domains. This is tricky because you will have to manually authenticate the old domain because the cert won't be living at the old domain host.
I choose and implemented #1 successfully.