package main

import (

	"fmt"

	"io"

	"net/http"

)

func main() {

	http.HandleFunc("/", route)

	e := http.ListenAndServe(":80", nil)

	if e != nil {

		fmt.Println(e)

	}

}

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

	req, _ := http.NewRequest(r.Method, "", r.Body)

	req.URL = r.URL

	req.URL.Host = r.Host //"www.qq.com"

	req.URL.Scheme = "http"

	for _, v := range r.Cookies() {

		req.AddCookie(v)

	}

	//req.Header = r.Header 这里的Header就不要使用了,使用的话他会自己主动跳转到https,代理就出问题了.

	resp, err := http.DefaultClient.Do(req)

	if err != nil {

		fmt.Println("Here:", err)

		return

	}

	for k, v := range resp.Header {

		for _, value := range v {

			w.Header().Add(k, value)

		}

	}

	for _, cookie := range resp.Cookies() {

		w.Header().Add("Set-Cookie", cookie.Raw)

	}

	w.WriteHeader(resp.StatusCode)

	io.Copy(w, resp.Body)

	resp.Body.Close()

	r.Body.Close()

}

这个用来訪问海外站点的话,要在本地host,把 域名绑定到IP,比如：1.1.1.1 www.google.com