HOW TO REDIRECT 301 HTTP TO HTTPS code example
Example 1: 301 redirect
301, "Moved Permanently"—recommended for SEO
302, "Found" or "Moved Temporarily"
Meta Refresh
Example 2: 301 redirect http to https
#For apache .htaccess
RewriteEngine On
RewriteCond %{HTTPS} off
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI} [R=301,L]