future.porn {
  reverse_proxy server:5000

  handle_errors {
    root * /srv/errors
    
    @401 expression `{http.error.status_code} == 401`
    handle @401 {
      rewrite * /401.html
      file_server
    }

    @403 expression `{http.error.status_code} == 403`
    handle @403 {
      rewrite * /403.html
      file_server
    }

    @404 expression `{http.error.status_code} == 404`
    handle @404 {
      rewrite * /404.html
      file_server
    }

    @5xx expression `{http.error.status_code} >= 500`
    handle @5xx {
      rewrite * /500.html
      file_server
    }
  }
}