How to redirect to HTTPS from HTTP without a redirect loop

Question

How can I redirect from http:// to https:// in htaccess?

I have tried;

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

but it sends it to a reload loop. Is there a way of doing this without it getting into a loop?

Answer 1

Use something like:

# Forces SSL
RewriteCond %{HTTPS} !=on
RewriteCond %{HTTP:X-Forwarded-Proto} !https
RewriteRule ^.*$ https://%{SERVER_NAME}%{REQUEST_URI} [L,R=301]

X-Forwarded-Proto is for if you are behind a hash-terminating load balancer