Nginx forward all to https

nginx_forward_all_https.conf

# Server to forward all HTTP 
server {
  # replace a.b.c.d with IP
  listen a.b.c.d:80;
  location / {
    if ($host ~* ^(example\.com|www\.example\.com)$ ) {
      rewrite  ^/(.*)$  https://example.com/$1  permanent;
    }
    # Nonstandard code 444 closes the connection without sending any headers
    return 444;
  }
}