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()
}