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()  
    }