Method ServeHTTP

cmd/hello/helloserver/helloserver.go:115–151

ServeHTTP implements http.Handler.

(w http.ResponseWriter, r *http.Request)

// ServeHTTP implements http.Handler.
func (s *Server) ServeHTTP(w http.ResponseWriter, r *http.Request) {
	if r.TLS == nil && s.HTTPSAddr != "" {
		host := r.Host
		if strings.Contains(r.Host, "100.101.102.103") {
			host = "hello.ts.net"
		}
		http.Redirect(w, r, "https://"+host, http.StatusFound)
		return
	}

	if strings.HasPrefix(r.RequestURI, "/static/") {
		staticHandler.ServeHTTP(w, r)
		return
	}

	if r.RequestURI != "/" {
		http.Redirect(w, r, "/", http.StatusFound)
		return
	}

	who, err := s.localClient().WhoIs(r.Context(), r.RemoteAddr)
	if err != nil {
		log.Printf("whois(%q) error: %v", r.RemoteAddr, err)
		http.Error(w, "Your Tailscale works, but we failed to look you up.", 500)
		return
	}
	data := tmplData{
		DisplayName:   who.UserProfile.DisplayName,
		LoginName:     who.UserProfile.LoginName,
		ProfilePicURL: who.UserProfile.ProfilePicURL,
		MachineName:   firstLabel(who.Node.ComputedName),
		MachineOS:     who.Node.Hostinfo.OS(),
		IP:            tailscaleIP(who),
	}
	w.Header().Set("Content-Type", "text/html; charset=utf-8")
	tmpl.Execute(w, data)
}

// firstLabel returns s up until the first period, if any.
func firstLabel(s string) string {