sub vcl_fetch {
  if (beresp.http.Content-Length !~ "[0-9]{7,10}") {
      return(deliver);
      }
  else {
    return (hit_for_pass);
  }
}
sub vcl_recv {
  if (req.url ~ "^/images") {
    unset req.http.cookie;
  }
  if (req.url ~ "^/admin") {
    return(pass);
  }
}