Simple file server in GO

simpleServer.go

package main

import (
	"net/http"
	"fmt"
	"flag"
	"log"
)

var (
	addr string
	port int
)

func init() {
	flag.StringVar(&addr, "addr", "0.0.0.0", "Define address that server will run.")
	flag.IntVar(&port, "port", 9100, "Define port that server will listen.")
	flag.Parse()
}

func main() {
	mux := http.NewServeMux()

	fs := http.FileServer(http.Dir("./"))
	mux.Handle("/", http.StripPrefix("/", fs))

	log.Printf("Server running: %s:%d", addr, port)
	http.ListenAndServe(fmt.Sprintf("%s:%d", addr, port), Logger(mux))
}

func Logger(h http.Handler) http.Handler {
	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		log.Printf("Requested: %s", r.URL.Path)
		h.ServeHTTP(w, r)
	})
}