Question

I am trying to write a login script, but for some reason I am getting an internal server error (500).

I tried this with PHP and cURL, there I got a response when I set the option VERIFY_PEER = false.

Here’s the C# code:

    private void Login()
    {
        HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create("https://whatever.com");
        ASCIIEncoding encoding = new ASCIIEncoding();
        string postData = string.Format("user={0}&password={1}&submit=login", User, Password);
        byte[] data = Encoding.ASCII.GetBytes(postData);
        webRequest.Method = "POST";
        ServicePointManager.ServerCertificateValidationCallback = (x,y,z,a) => true;
        webRequest.ContentLength = data.Length;
        webRequest.KeepAlive = false;
        using (Stream stream = webRequest.GetRequestStream())
        {
            stream.Write(data, 0, data.Length);
        }
        using (HttpWebResponse response = (HttpWebResponse)webRequest.GetResponse())
        {
            using (StreamReader responseStream = new StreamReader(response.GetResponseStream()))
            {
                Console.WriteLine(responseStream.ReadToEnd());
            }
        }
    }

Does anybody know why I am not getting a response?

Thanks for your help.

Answer 1

I found the mistake… It seems as if the server requieres a “valid” useragent. When setting firefox as a useragent, everything works fine.