用Go写了一个可以用来访问goolge类似Proxy的小程序

   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()  
}  </pre>