public static string RequestGetHtml(string host, WebProxy proxy, CookieContainer cookies) {
         HttpWebRequest httpRequest = HttpTools.CreateHttpWebRequestGET(host, cookies);  // создали запрос
         string html = "";
         if (httpRequest == null)
            return html;
         if (proxy != null)
            httpRequest.Proxy = proxy;
         HttpWebResponse httpResponse = null;
         try {
            httpResponse = (HttpWebResponse)httpRequest.GetResponse();
         } catch (WebException ex) {
            HttpWebResponse response = ex.Response as HttpWebResponse;
            string r = HttpTools.getResponseTxt(response, Encoding.UTF8);
            Tools.WriteLog(ex.Message);
            return html;
         }
         if (httpResponse != null) {
            using (httpResponse) {
               // Определить кодировку
               Encoding enc = HttpTools.GetEncoding(httpResponse);
               if (enc == null)
                  enc = Encoding.UTF8;
               // Вернуть результат в виде текста
               html = HttpTools.getResponseTxt(httpResponse, enc);
            }
         }
         return html;
      }