Now, by looking at a little bit, I'll try to answer this question myself. In this case, we have a Rurouter from which three routes for the client connected are extracted, and each route has its hendler, which is activated when the client moves to the address. For example, we have three possible routes on the route. Route route1 =router.route("/registration/")
Route route2 = router.route("/gallery/")
Route route3 = router.route("/video/")
and down in code, before listen() We've got. requestHandler(router::accept)(as I understand, in blatantly speaking, to put a trawler on a server), so the client has an address to mysite.com/registration, the server accepts the case and sees if there is a route. If there is, a hendler that sends a signal for the appropriate processing of the request (the user ' s registration system can be implemented in the hedler). route("/video/") It takes the way we want to write in a roll, like that, a little bit cunning, but I think that's the point. ♪