nginx http redirect to https (whole server instance)

gistfile1.txt

# Redirect HTTP request to HTTPS
server {
  listen 80 default_server;
	listen [::]:80 default_server;
	server_name _;
	return 301 https://$host$request_uri;
}

# HTTPS settings
server {
  listen 443 default_server;
  ... # the rest of the standard HTTPS configuration
}