upstream waifu2x {
	least_conn;
        server localhost:8812;
	# ..
}

map $http_accept_language $lang {
  default en;
  ~ja ja;
  ~ru ru;
  ~pt pt;
  ~es es;
  ~fr fr;
  ~de de;
  ~tr tr;
  ~zh-CN zh-CN;
  ~zh-TW zh-TW;
  ~zh zh-CN;
  ~ko ko;
  ~nl nl;
  ~ca ca;
  ~ro ro;
  ~it it;
  ~eo eo;
  ~no no;
  ~uk uk;
  ~pl pl;
  ~bg bg;
  ~en en;
}

#limit_req_zone  $binary_remote_addr  zone=one:128m   rate=10r/m;
server {
       # listen 80 default_server; 
       server_name waifu2x.udp.jp; # fill your domain
       
       access_log	/var/log/nginx/waifu2x.access.log;
       
       root   /home/ubuntu/waifu2x/assets;
       try_files $uri $uri/index.$lang.html $uri/index.html @api;

       proxy_set_header Host $http_host;
       proxy_set_header X-Real-IP  $remote_addr;
       proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

       location ~ ^/(apple-touch-icon|browserconfig|mstile)(.*)\.(png|xml|ico)$ {
          return 204;
       }
       location @api {
          # limit_req zone=one burst=3;
          proxy_pass http://waifu2x;
       }
}