Gorilla mux + basic authentication from htpasswd file

gorilla_auth.go

package main

import (
	auth "github.com/abbot/go-http-auth"
	"github.com/gorilla/mux"
	"log"
	"net/http"
	"time"
)

func main() {
	r := mux.NewRouter()
	// Define paths
	sub := r.PathPrefix("/api").Subrouter()

	// ... define other handling bits and routing

	s := &http.Server{
		Addr:           BIND_ADDRESS,
		ReadTimeout:    10 * time.Second,
		WriteTimeout:   10 * time.Second,
		MaxHeaderBytes: 1 << 20,
	}
	h := auth.HtpasswdFileProvider(HTPASSWD_FILE)
	a := auth.NewBasicAuthenticator("Basic Realm", h)
	http.Handle("/", a.Wrap(func(w http.ResponseWriter, ar *auth.AuthenticatedRequest) {
		r.ServeHTTP(w, &ar.Request)
	}))
	log.Err(s.ListenAndServe().Error())
}