Simple SSL Static File Server in go

server.go

package main

import (
	"crypto/tls"
	"flag"
	"log"
	"net/http"
	"time"
)

func logger(h http.Handler) http.Handler {
	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		rAddr := r.RemoteAddr
		method := r.Method
		path := r.URL.Path
		log.Printf("Remote: %s [%s] %s\n", rAddr, method, path)
		h.ServeHTTP(w, r)
	})
}

func main() {
	port := flag.String("p", "8443", "port to serve on")
	directory := flag.String("d", ".", "the directory of static file to host")
	cert := flag.String("c", "", "path to cert file")
	privKey := flag.String("k", "", "path to private key file")
	flag.Parse()

	muxSSL := http.NewServeMux()
	muxSSL.HandleFunc("/", logger(http.FileServer(http.Dir(*directory))).ServeHTTP)

	tlsConfig := &tls.Config{}
	tlsConfig.Certificates = make([]tls.Certificate, 1)

	var err error
	tlsConfig.Certificates[0], err = tls.LoadX509KeyPair(*cert, *privKey)
	if err != nil {
		log.Fatal(err)
	}

	tlsConfig.BuildNameToCertificate()

	ServerSSL := &http.Server{
		Handler:        muxSSL,
		ReadTimeout:    10 * time.Second,
		WriteTimeout:   10 * time.Second,
		MaxHeaderBytes: 1 << 20,
	}

	listener, err := tls.Listen("tcp", ":"+*port, tlsConfig)
	if err != nil {
		log.Fatal(err)
	}

	log.Printf("Serving %s on HTTPS port: :%s\n", *directory, *port)
	err = ServerSSL.Serve(listener)
	if err != nil {
		log.Fatal(err)
	}
}