nginx vhost / site config file

nginx.conf

upstream node_backend {
	server 127.0.0.1:3000;
	keepalive 32;
}

server {

        root /var/www/testapp/public;
        index index.html;

        server_name example.com localhost;

	location / {
		#auth_basic "Restriced";
		#auth_basic_user_file  /etc/nginx/htpasswd;
		
		try_files $uri @backend;
		## or
		#try_files $uri $uri/ @backend;
	}


        location @backend {
		## If you use express, make sure you set "trust proxy" to true
                proxy_set_header X-Real-IP $remote_addr;
                proxy_set_header X-Forwarded-Proto http;
                proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
                proxy_set_header Host $http_host;
                
                proxy_redirect off;
                
                ## Make sure you know what this means. Default nginx setting for proxy_buffering is 'on'
                proxy_buffering off;
                
                ## Keep the connection open / alive
		proxy_http_version 1.1;
		proxy_set_header Connection "";
		
                proxy_pass http://node_backend;
        }

}