listen 80;
listen 443 ssl http2;

add_header Strict-Transport-Security "max-age=15552000; includeSubDomains; preload";

ssl_certificate /etc/letsencrypt/live/$ssl_server_name/fullchain.pem;
ssl_certificate_key /etc/letsencrypt/live/$ssl_server_name/privkey.pem;
ssl_session_timeout 1d;
ssl_session_cache shared:SSL:10m;
ssl_session_tickets off;
ssl_dhparam /etc/nginx/dhparam.pem;
ssl_protocols TLSv1.2 TLSv1.3;
ssl_ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384;
ssl_prefer_server_ciphers off;
ssl_stapling on;
ssl_stapling_verify on;
ssl_trusted_certificate /etc/ssl/cert.pem;

if ($redirect_to_https) {
  return 301 https://$http_host$request_uri;
}