configure ssl redirect for nginx

ssl-redirect-nginx.conf

# http part
server {
	listen 80;
	listen [::]:80;

	root /var/www/hengwei.me/html;
	index index.html index.htm;

	# Make site accessible from http://localhost/
	server_name hengwei.me www.hengwei.me;
  return 301 https://$server_name$request_uri;

	location / {
		# First attempt to serve request as file, then
		# as directory, then fall back to displaying a 404.
		try_files $uri $uri/ =404;
		# Uncomment to enable naxsi on this location
		# include /etc/nginx/naxsi.rules
	}
}

# ssl part

server {
    root /var/www/hengwei.me/html;
    index index.html index.htm;
    server_name hengwei.me;

    listen 443 ssl; # managed by Certbot
ssl_certificate /etc/letsencrypt/live/hengwei.me/fullchain.pem; # managed by Certbot
ssl_certificate_key /etc/letsencrypt/live/hengwei.me/privkey.pem; # managed by Certbot
    include /etc/letsencrypt/options-ssl-nginx.conf; # managed by Certbot
    ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem; # managed by Certbot
}