fileserver

package main

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

func main() {
	dir, _ := os.Getwd()
	port := os.Getenv("PORT")
	if port == "" {
		port = "0"
	}
	l, err := net.Listen("tcp4", ":"+port)
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("listening on :%s\nOpen http://%s\n", l.Addr(), l.Addr().String())
	log.Fatal(http.Serve(l, http.FileServer(http.Dir(dir))))
}