//Trust all certificates
            System.Net.ServicePointManager.ServerCertificateValidationCallback =
                ((sender, certificate, chain, sslPolicyErrors) => true);


            //Отправляем запрос на первое получение куков для дальнейшей авторизации
            byte[] buffer = Encoding.ASCII.GetBytes("login_username=testmanny14&login_password=1qaz2wsx&login=%C2%F5%EE%E4");
            HttpWebRequest WebReq = (HttpWebRequest)WebRequest.Create("https://dostup.website/http://rutracker.org/forum/login.php");//Строка для Post-запроса

            var cc = new CookieContainer();
            WebReq.CookieContainer = cc;//включаем куки
            WebReq.Method = "POST";
            WebReq.ContentType = "application/x-www-form-urlencoded";
            WebReq.ContentLength = buffer.Length;
            HttpWebResponse WebResp;
            string result;
            Encoding responseEncoding;
            try
            {
                Stream PostData = WebReq.GetRequestStream();
                PostData.Write(buffer, 0, buffer.Length);
                PostData.Close();
                WebResp = (HttpWebResponse)WebReq.GetResponse();

            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, " ", MessageBoxButtons.OK, MessageBoxIcon.Error);
                return;
            }
            //Отправляем запрос к странице с торрентом для получения ее содержимого
            var url = URL.Text;
            WebReq = (HttpWebRequest)WebRequest.Create(url);
            WebReq.CookieContainer = cc;
            WebReq.Method = "GET";
            WebReq.ContentType = "application/x-www-form-urlencoded";
            WebResp = (HttpWebResponse)WebReq.GetResponse();

            responseEncoding = Encoding.GetEncoding(WebResp.CharacterSet);
            try
            {
                using (StreamReader sr = new StreamReader(WebResp.GetResponseStream(), responseEncoding))
                {
                    result = sr.ReadToEnd();
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, "Заголовок сообщения", MessageBoxButtons.OK, MessageBoxIcon.Error);
                return;
            }
            //Скачать торрент
            HtmlAgilityPack.HtmlDocument HD = new HtmlAgilityPack.HtmlDocument();
            HD.LoadHtml(result);
            var match = HD.DocumentNode.SelectSingleNode("//a[@class='dl-stub dl-link']").GetAttributeValue("href", "");
            WebReq = (HttpWebRequest)WebRequest.Create("https://dostup.website/http://rutracker.org/forum/" + match.ToString());
            WebReq.CookieContainer = cc;
            WebReq.AllowAutoRedirect = false;
            WebReq.Method = "POST";
            WebReq.Referer = url;
            WebReq.ContentType = "application/x-www-form-urlencoded";

            /*Пишем его в файл*/

            Stream ReceiveStream = WebReq.GetResponse().GetResponseStream();

            string filename = @"D:\MP4\123.torrent";
            byte[] buffer1 = new byte[1024];
            FileStream outFile = new FileStream(filename, FileMode.Create);
            int bytesRead;
            while ((bytesRead = ReceiveStream.Read(buffer1, 0, buffer.Length)) != 0)
                outFile.Write(buffer1, 0, bytesRead);
            outFile.Close();
            MessageBox.Show("Файл загружен!");
            ReceiveStream.Close();
            WebReq.GetResponse().Close();