HttpProxy.go

package main

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

func handler(w http.ResponseWriter, r *http.Request) {

	resp, err := http.DefaultTransport.RoundTrip(r)

	if err != nil {

		log.Print(err)
		return
	}

	for k, vv := range resp.Header {

		for _,v := range vv{
				w.Header().Add(k,v)
		}
	}

	w.Header().Add("Proxy","HIT")

	if resp.StatusCode >= 300 {
		w.WriteHeader(resp.StatusCode);
		return
	}

	defer resp.Body.Close()

	bufio.NewReader(resp.Body).WriteTo(w)

}

func main() {

	http.HandleFunc("/", handler)
	log.Println("Start serving on port 8888")
	http.ListenAndServe(":8888", nil)
}