public static T RequestGet<T>(string url, string user,string password, ref int status)

        {

            string retval = null;

            StringBuilder builder = new StringBuilder();

            builder.Append(url);

            builder.AppendFormat($"{user}?password={password}");

            GC.Collect();

            var request = (HttpWebRequest)WebRequest.Create(builder.ToString());

            try

            {

               

                request.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8";

                request.Headers.Add(HttpRequestHeader.AcceptEncoding, "gzip, deflate");

                request.Headers.Add(HttpRequestHeader.AcceptLanguage, "zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2");

                request.Headers.Add(HttpRequestHeader.CacheControl, "no-cache");

                System.Net.ServicePointManager.DefaultConnectionLimit = int.MaxValue;

                ServicePointManager.Expect100Continue = false;

                request.KeepAlive = false;

                request.Method = "GET";

                request.ContentType = "application/json; charset=UTF-8";

                request.UserAgent = "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:59.0) Gecko/20100101 Firefox/59.0";

                request.Proxy = null;

                request.Timeout = 4000;

                System.Threading.Thread.Sleep(200);

                using (var Response = (HttpWebResponse)request.GetResponse())

                {

                    using (var reader = new StreamReader(Response.GetResponseStream(), Encoding.UTF8))

                    {

                        retval = reader.ReadToEnd();

                        //reader.Dispose();

                        //reader.Close();

                    }

                    status = (int)Response.StatusCode;

                    //Response.Dispose();

                    //Response.Close();

                }

                T t = Newtonsoft.Json.JsonConvert.DeserializeObject<T>(retval);

                return t;

            }

            catch (WebException e)

            {

                if (e.Response == null)

                {

                    status = 300;

                    return default(T);

                }

                var rsp = e.Response as HttpWebResponse;



                var httpStatusCode = (int)rsp.StatusCode;

                status = httpStatusCode;

                retval = e.Message;

            }

            finally

            {

                request.Abort();

                request = null;

            }

            return default(T);

        }