http.go

package main

import (
	"net/http"
	"os"
	"path/filepath"
	"log"
)

func main() {
	var dir string
	if len(os.Args) > 1 {
		dir = os.Args[1]
	} else {
		dir = filepath.Dir(os.Args[0])
	}
	srv := http.FileServer(http.Dir(dir))
	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
		log.Println(r.RemoteAddr, r.RequestURI)
		srv.ServeHTTP(w, r)
	})
	log.Println("server listen on :8080")
	err := http.ListenAndServe(":8080", nil)
	if err != nil {
		log.Fatal("Error ListenAndServe: ", err)
	}
}