gorilla mux - multiple handlers

mux_handlers.go

package main

import (
	"fmt"
	"github.com/gorilla/mux"
	"net/http"
)

func main() {
	r := mux.NewRouter()
	r.HandleFunc("/", HomeHandler) // no auth
	r.HandleFunc("/about", AboutHandler) // no auth
	r.HandleFunc("/user/", UserHandler) // auth needed
	r.HandleFunc("/user/account", UserAccountHandler) // auth needed
	
	smx := http.NewServeMux()
	
	smx.Handle("/", MH{r}) 
	smx.Handle("/user/", AH{r}) 

	s := &http.Server{Addr: ":2022", Handler: smx}
	s.ListenAndServe()
}

func HomeHandler(w http.ResponseWriter, r *http.Request) {
	fmt.Fprintf(w, "Home")
}

func AboutHandler(w http.ResponseWriter, r *http.Request) {
	fmt.Fprintf(w, "About")
}

func UserHandler(w http.ResponseWriter, r *http.Request) {
	fmt.Fprintf(w, "User")
}

func UserAccountHandler(w http.ResponseWriter, r *http.Request) {
	fmt.Fprintf(w, "User Account")
}

type AH struct {
	http.Handler
}

func (ah AH) ServeHTTP(w http.ResponseWriter, r *http.Request) {
	fmt.Fprintf(w, "auth needed - ")
	ah.Handler.ServeHTTP(w, r)
}

type MH struct {
	http.Handler
}

func (mh MH) ServeHTTP(w http.ResponseWriter, r *http.Request) {
	fmt.Fprintf(w, "no auth - ")
	mh.Handler.ServeHTTP(w, r)
}