Web Server in Go

package main

import (
	"log"
	"net/http"
	"strings"
)
func handler(w http.ResponseWriter, r *http.Request) {
	var sPath string
	if r.Method == "GET" {
		log.Println(r.URL.Path)
		if strings.HasPrefix(r.URL.Path, "/") {
			sPath = r.URL.Path[1:]
		} else {
			sPath = r.URL.Path
		}
		http.ServeFile(w, r, sPath)
	}
}
func main() {
	log.Printf("About to listen on localhost. Go to http://localhost")
	http.HandleFunc("/", handler)
	err := http.ListenAndServe(":80", nil)
	if err != nil {
		log.Fatal("ListenAndServe: ", err)
	}
}