Nginx example config with IPv6,HTTP/2 and A+ SLL rating

example.conf

## http://example.com redirects to https://example.com
server {
	listen 80;
	listen [::]:80;
	server_name example.com;

	include /etc/nginx/snippets/letsencrypt.conf;

	location / {
		return 301 https://example.com$request_uri;
	}
}

## http://www.example.com redirects to https://www.example.com
server {
	listen 80 default_server;
	listen [::]:80 default_server ipv6only=on;
	server_name www.example.com;

	include /etc/nginx/snippets/letsencrypt.conf;

	location / {
		return 301 https://www.example.com$request_uri;
	}
}

## https://www.example.com redirects to https://example.com
server {
        listen 443 ssl http2;
	listen [::]:443 ssl http2;
        server_name www.example.com;

	ssl_certificate /etc/letsencrypt/live/example.com/fullchain.pem;
	ssl_certificate_key /etc/letsencrypt/live/example.com/privkey.pem;
	ssl_trusted_certificate /etc/letsencrypt/live/example.com/chain.pem;
	include /etc/nginx/snippets/ssl.conf;

        return 301 https://example.com$request_uri;
}

## Serves https://example.com
server {
	server_name example.com;
        listen 443 ssl http2 default_server;
	listen [::]:443 ssl http2 default_server ipv6only=on;

	ssl_certificate /etc/letsencrypt/live/example.com/fullchain.pem;
        ssl_certificate_key /etc/letsencrypt/live/example.com/privkey.pem;
        ssl_trusted_certificate /etc/letsencrypt/live/example.com/chain.pem;
        include /etc/nginx/snippets/ssl.conf;


	root /var/www/example.com;
        index index.html;

	location / {
		try_files $uri $uri/ =404;
	}
}