#sub_path_only rewrite ^__PATH__$ __PATH__/ permanent;
location __PATH__/ {
  proxy_http_version 1.1;
  proxy_pass http://127.0.0.1:__PORT__;
  proxy_buffering off;
  proxy_read_timeout 90;

  proxy_set_header Upgrade $http_upgrade;
  proxy_set_header Connection "upgrade";
  proxy_set_header Host $host;
  proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}