I am still trying to understand how to server static page. I looked at examples, but I do not understand why modified code co not work: 

import std.stdio;

import vibe.core.core;
import vibe.core.log;
import vibe.http.router;
import vibe.http.server;
import vibe.http.fileserver;
import vibe.web.rest;

void main()
{
	auto router = new URLRouter;
	router.get("/", &index);

	auto settings = new HTTPServerSettings;
	settings.port = 8080;
	listenHTTP(settings, router);

	runEventLoop();
}

void index(HTTPServerRequest req, HTTPServerResponse res)
{
	res.redirect("/index.html");
}

It's clear, that code do not have serveStaticFiles part, so it would now work.

Example include line:
router.get("*", serveStaticFiles("./public/",));
but I can't understand why after handling index.html I should handle all ("*") requests?

Please explain me why I should write in such way, I do not see any logic here.