gistfile1.txt

func sendRequest(w http.ResponseWriter, r *http.Request) {
	url := r.URL
	url.Host = "example.com"
	proxyReq, err := http.NewRequest(r.Method, "https:"+url.String(), r.Body)
	if err != nil {
		fmt.Println(err)
	}

	proxyReq.Header.Set("Host", r.Host)
	proxyReq.Header.Set("X-Forwarded-For", r.RemoteAddr)

	for header, values := range r.Header {
		for _, value := range values {
			proxyReq.Header.Add(header, value)
		}
	}

	client := &http.Client{}
	proxyRes, err := client.Do(proxyReq)

	if err != nil {
		fmt.Println(err)
	}

	defer proxyRes.Body.Close()
  body, err := ioutil.ReadAll(proxyRes.Body)

	fmt.Println(body)

}