Very simple http fileserver for serving locally while testing web apps, etc.

servehere.go

// Package main implements a simple http file server mainly for use in
// serving files locally when testing web apps.
package main

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

func main() {
	port := flag.String("p", "8000", "The port to serve on.")
	flag.Parse()

	log.Printf("Starting HTTP fileserver on port %s.\n", *port)
	log.Println("Press CTRL-C to stop serving.\n")

	handler := loggingHandler(http.FileServer(http.Dir(".")))
	log.Fatalln(http.ListenAndServe(":"+*port, handler))
}

// loggingHander wraps an http.Handler and prints request/response info.
func loggingHandler(h http.Handler) http.Handler {
	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {

		logw := newResponseLogger(w)
		h.ServeHTTP(logw, r)

		log.Printf("%s %s %d %s", r.Method, r.RequestURI, logw.statusCode, http.StatusText(logw.statusCode))
	})
}

// responseLogger wrapps a http.ResponseWriter and allows the user to get
// the http status code from the ResponseWriter.
type responseLogger struct {
	http.ResponseWriter
	statusCode int
}

// newResponseLogger creates a responseLogger.
func newResponseLogger(w http.ResponseWriter) *responseLogger {
	return &responseLogger{w, http.StatusOK}
}

// WriteHeader "overrides" ResponseWriter.WriteHeader() method and stores
// the status code.
func (rl *responseLogger) WriteHeader(code int) {
	rl.statusCode = code
	rl.ResponseWriter.WriteHeader(code)
}