nginx node reverse proxy

upstream backend {
	server 127.0.0.1:3000;
}

server {
	listen 80;
	server_name decryptornot.com;

	root ~/LockersIdentifier/public;

	location / {
		try_files $uri @backend;
	}

	location @backend {
		proxy_pass http://backend;
		proxy_set_header X-Real-IP $remote_addr;
		proxy_set_header Host $host;
		proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
		# Following is necessary for Websocket support
		proxy_http_version 1.1;
		proxy_set_header Upgrade $http_upgrade;
		proxy_set_header Connection "upgrade";
	}
}