Post запрос HttpWebRequest через прокси socks5

            string[] POST(string url, string data)
        {
 
                HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(url);
            request.CachePolicy = new RequestCachePolicy(RequestCacheLevel.NoCacheNoStore);
            request.Timeout = 20000;
            request.Method = "POST";
            request.ContentType = "application/x-www-form-urlencoded";
            request.UserAgent = "Opera/9.80 (Windows NT 5.1; U; ru) Presto/2.9.168 Version/11.51";
            request.CookieContainer = cc;
 
            string command = @"" + data;
            byte[] bytes = Encoding.ASCII.GetBytes(command);
            request.ContentLength = bytes.Length;
 
            Stream stream = request.GetRequestStream();
            stream.Write(bytes, 0, bytes.Length);
                string ret = new StreamReader(request.GetResponse().GetResponseStream()).ReadToEnd();
                return new string[2] { request.Address.ToString(), ret };
        }