nginx

server {
	listen 443 ssl;
	listen [::]:443;
	server_name cdn.xxx.xxx;	

	ssl on;

	root /var/www/html;

	index index.php index.html index.htm index.nginx-debian.html;

	location / {
		# First attempt to serve request as file, then
		# as directory, then fall back to displaying a 404.
		try_files $uri $uri/ =404;
		#try_files $uri $uri/ /index.php$is_args$args;
		#add_header Access-Control-Allow-Origin *;
		
		# enables CORS
		if ($request_method = 'OPTIONS') {
			add_header 'Access-Control-Allow-Origin' '*';
			add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
			#
			# Custom headers and headers various browsers *should* be OK with but aren't
			#
			add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Content-Range,Range';
			#
			# Tell client that this pre-flight info is valid for 20 days
			#
			add_header 'Access-Control-Max-Age' 1728000;
			add_header 'Content-Type' 'text/plain; charset=utf-8';
			add_header 'Content-Length' 0;
			return 204;
		 }
		 if ($request_method = 'POST') {
			add_header 'Access-Control-Allow-Origin' '*';
			add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
			add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Content-Range,Range';
			add_header 'Access-Control-Expose-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Content-Range,Range';
		 }
		 if ($request_method = 'GET') {
			add_header 'Access-Control-Allow-Origin' '*';
			add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
			add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Content-Range,Range';
			add_header 'Access-Control-Expose-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Content-Range,Range';
		 }
	}

	location ~ \.php$ {
		include snippets/fastcgi-php.conf;
		fastcgi_pass unix:/run/php/php7.0-fpm.sock;
	}

	location ~ /\.ht {
		deny all;
	}
	location = /favicon.ico { log_not_found off; access_log off; }
	location = /robots.txt { log_not_found off; access_log off; allow all; }
	location ~* \.(gif|ico|jpeg|jpg|png|cur|otf|woff|svg)$ {
		expires 7d;
		log_not_found off;
		add_header "Access-Control-Allow-Origin" "*";
	}

        location ~* \.(css|js)$ {
                expires 7d;
                log_not_found off;
        }

	location ~* \.(ttf|woff|otf|js|css)$ {
		add_header Access-Control-Allow-Origin *;
        }
	
	location ~ /var/www/html/wp-config.php {
		return 404;
	}
}