nginx.conf

upstream http_backend {
	server 127.0.0.1:8080;
	keepalive 16;
}

server {
	listen 80;    
	server_name ec2-34-207-248-237.compute-1.amazonaws.com;
	location / {
		proxy_pass http://http_backend;
		proxy_read_timeout 300;
		proxy_connect_timeout 300;
		proxy_http_version 1.1;
		proxy_set_header Upgrade $http_upgrade;
		proxy_set_header Connection "";
		proxy_set_header Host $host;
		proxy_cache_bypass $http_upgrade;
		if ($request_method = 'OPTIONS') {
			add_header 'Access-Control-Allow-Origin' '*';
			add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS, PUT, DELETE';
			add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range';
			add_header 'Access-Control-Max-Age' 1728000;
			add_header 'Content-Type' 'text/plain; charset=utf-8';
			add_header 'Content-Length' 0;
			return 204;
		}
		if ($request_method = 'POST') {
			add_header 'Access-Control-Allow-Origin' '*';
			add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS, PUT, DELETE';
			add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range';
			add_header 'Access-Control-Expose-Headers' 'Content-Length,Content-Range';
		}
		if ($request_method = 'GET') {
			add_header 'Access-Control-Allow-Origin' '*';
			add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS, PUT, DELETE';
			add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range';
			add_header 'Access-Control-Expose-Headers' 'Content-Length,Content-Range';
		}
		if ($request_method = 'OPTIONS') {
			add_header 'Access-Control-Allow-Origin' '*';
			add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS, PUT, DELETE';
			add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range';
			add_header 'Access-Control-Expose-Headers' 'Content-Length,Content-Range';
		}
		if ($request_method = 'PUT') {
			add_header 'Access-Control-Allow-Origin' '*';
			add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS, PUT, DELETE';
			add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range';
			add_header 'Access-Control-Expose-Headers' 'Content-Length,Content-Range';
		}
		if ($request_method = 'DELETE') {
			add_header 'Access-Control-Allow-Origin' '*';
			add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS, PUT, DELETE';
			add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range';
			add_header 'Access-Control-Expose-Headers' 'Content-Length,Content-Range';
		}
	}
}