apache redirect from non www to www

Question

I have a website that doesn\'t seem to redirect from non-www to www.

My Apache configuration is as follows:

RewriteEngine On
### re-direct t         


        

Answer 1

-If you host multiple domain names (Optional)

-If all those domain names are using https (as they should)

-if you want all those domain names to use www dot domainName

This will avoid doble redirection (http://non www to http://www and then to https://www)

RewriteEngine On
RewriteCond %{HTTP_HOST} ^(?:www\.)?(.+)$ [NC]
RewriteRule ^(.*)$ https://www.%1$1 [R=301,L]

And

RewriteEngine On
RewriteCond %{HTTP_HOST} !^www\. [NC]
RewriteRule ^(.*)$ https://www.%{HTTP_HOST}$1 [R=301,L]

You should change the redirection code 301 to the most convenient one