How do I auth a user:pass proxy in golang

Question

I am trying to use a user:pass proxy in my request in golang, and I am getting `proxy authentication required`` when I run it

here is my code:

var ip string = "123.45.67.890:54400:user:pass"

func main() {

    proxy := "http://" + ip
    proxyURL, err := url.Parse(proxy)
    if err != nil {
        log.Fatal(err)
    }

    urlStr := site
    url, err := url.Parse(urlStr)
    if err != nil {
        log.Fatal(err)
    }

    transport := &http.Transport{
        Proxy: http.ProxyURL(proxyURL),
    }

    jar, _ := cookiejar.New(nil)

    client := &http.Client{
        Jar:       jar,
        Transport: transport,
    }

    req, _ := http.NewRequest("GET", url.String(), nil)
    if err != nil {
        log.Fatal(err)
    }

    auth := "johndoe2x:johndoe2x"
    basicAuth := "Basic " + base64.StdEncoding.EncodeToString([]byte(auth))
    req.Header.Add("Proxy-Authorization", basicAuth)
    req.Header.Add("accept", "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9")
    req.Header.Add("accept-language", "en-US,en;q=0.9")
    req.Header.Add("upgrade-insecure-requests", "1")
    req.Header.Add("user-agent", userAgent)

    res, err := client.Do(req)
    if err != nil {
        log.Fatal(err)
    }

    log.Println("statusCode:", res.StatusCode)
    
    data, err := ioutil.ReadAll(res.Body)
    if err != nil {
        log.Fatal(err)
    }
    log.Println(string(data))

}

Again, when I run this I get Time_here Get "https://site_here/": Proxy Authentication Required I have been stuck on this for a few hours, and Im not sure exactly how to do it in Go, I was able to do it in JS with a var for user and pass but this one is giving me some trouble in Golang

Thanks in advance!

Does this answer your question? [How to use proxies with authentication in my HTTP requests?](https://stackoverflow.com/questions/53406874/how-to-use-proxies-with-authentication-in-my-http-requests) — Peter, Sep 24 '20 at 05:12

score 0 · Accepted Answer · answered Sep 24 '20 at 09:16

0

You are adding the proxy authentication headers to the request which will go to the target server. What you have to do is to add this header to transport.

Replace req.Header.Add("Proxy-Authorization", basicAuth) with

transport.ProxyConnectHeader = http.Header{}
transport.ProxyConnectHeader.Add("Proxy-Authorization", basicAuth)

answered Sep 24 '20 at 09:16

Emanuel Bennici

426
3
13

cool, so is auth := `` johndoe2x:johndoe2x" `` correct or should I use auth := `` "user:pass" `` – Salvatore Timpani Sep 24 '20 at 15:10
The basic auth syntax is `base64(username:password)` – Emanuel Bennici Sep 24 '20 at 15:23
yes but do I actually put the username and password in those fields or do I actually type ```username:password``` – Salvatore Timpani Sep 24 '20 at 16:48
You replace those fields eith the username and password. – Emanuel Bennici Sep 24 '20 at 17:09

How do I auth a user:pass proxy in golang

1 Answers1