[Boost-users] [dataflow] Filter with multiple slots

Hey, I want to define my own filter, which can take different signatures. It should take a Url (e.g. std::string, for me an unicode type) and use a difault timeout or it should take both. There is an tutorial for multiple slots, when using a consumer, but i need a filter and i am wondering how i should define the signature of the filter then? (overlaoding of the operator() method needs to be done of course. Kind Regards Manuel