Redirect HTTP to HTTPS Nginx

nginx-https.md

server {
	listen 80 default_server;
	listen [::]:80 default_server;
	server_name _;
	return 301 https://$host$request_uri;
}

or

server {
	listen 80 default_server;
	listen [::]:80 default_server;
	server_name example.com www.example.com;
	return 301 https://$server_name$request_uri;
}