Re: Pixel tracking with urlref needs url parameter?

thanks for the direkt link to the relevant piece of code.

I expected $_SERVER['HTTP_REFERER'] to be used always if the url parameter is not passed, therefore depending only on "empty($this->params['url'])" but not on "empty($this->params['urlref'])".

IOW I wonder why "empty($this->params['urlref'])" is used to decide whether to derive url from $_SERVER['HTTP_REFERER'].

I can't imagine situations where the url parameter might not be passed and the URL is different from the referrer.

Of course my lack of imagination is no proof of nonexistence.

Oliver