#sub_path_only rewrite ^__PATH__$ __PATH__/ permanent;
location __PATH__ {
  proxy_pass        http://127.0.0.1:__PORT____PATH__;
  proxy_redirect    off;
  proxy_set_header  Host $host;
  proxy_set_header  X-Real-IP $remote_addr;
  proxy_set_header  X-Forwarded-Proto $scheme;
  proxy_set_header  X-Forwarded-For $proxy_add_x_forwarded_for;
  proxy_set_header  X-Forwarded-Host $server_name;
  proxy_set_header  X-Forwarded-Port $server_port;
  
  proxy_http_version 1.1;
  proxy_set_header Upgrade $http_upgrade;
  proxy_set_header Connection "upgrade";
}