Nginx and node.js server integration

nginx.conf

user www-data;
worker_processes 4;
pid /run/nginx.pid;

events {
	worker_connections 768;
	# multi_accept on;
}

http {

	##
	# Basic Settings
	##

	sendfile on;
	tcp_nopush on;
	tcp_nodelay on;
	keepalive_timeout 65;
	types_hash_max_size 2048;
	# server_tokens off;

	# server_names_hash_bucket_size 64;
	# server_name_in_redirect off;

	include /etc/nginx/mime.types;
	default_type application/octet-stream;

	##
	# SSL Settings
	##

	ssl_protocols TLSv1 TLSv1.1 TLSv1.2; # Dropping SSLv3, ref: POODLE
	ssl_prefer_server_ciphers on;

	##
	# Logging Settings
	##

	access_log /var/log/nginx/access.log;
	error_log /var/log/nginx/error.log;

	##
	# Gzip Settings
	##

	gzip on;
	gzip_disable "msie6";

	# gzip_vary on;
	# gzip_proxied any;
	# gzip_comp_level 6;
	# gzip_buffers 16 8k;
	# gzip_http_version 1.1;
	# gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;

	##
	# Virtual Host Configs
	##

	include /etc/nginx/conf.d/*.conf;
	include /etc/nginx/sites-enabled/*;

	upstream sample {
	      server 127.0.0.1:8080;
	      keepalive 64;
	    }
	server {
	        listen 80;
	        listen 443 ssl;
 
	        server_name 127.0.0.1;

		 location ~ ^/(images/|img) {
          			root /nodeapps/nodeexpress4mongoangular;
				  access_log off;
				  expires max;
			}

		location / {
			  proxy_redirect off;
			  proxy_set_header   X-Real-IP            $remote_addr;
			  proxy_set_header   X-Forwarded-For  $proxy_add_x_forwarded_for;
			  proxy_set_header   X-Forwarded-Proto $scheme;
			  proxy_set_header   Host                   $http_host;
			  proxy_set_header   X-NginX-Proxy    true;
			  proxy_set_header   Connection "";
			  proxy_http_version 1.1;
			  proxy_pass         http://sample;
			}
	}
}