用HttpWebRequest模擬傳送https請求，提示錯誤： 基礎連線已關閉，接受時發生錯誤

在本地測試ok，開發環境為64位win7 vs2013 釋出到windows server 2008 x86系統上執行一直報錯。。

下載2008 r2 x64執行發現數據正常。。

public static string GetUrl(string url)
        {
          
            if (url.StartsWith("https", StringComparison.OrdinalIgnoreCase))
            {
                System.Console.WriteLine("https connections.....");
                ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult);
                // 這裡設定了協議型別。
                //ServicePointManager.SecurityProtocol =SecurityProtocolType.Tls12;// (SecurityProtocolType)3072;// SecurityProtocolType.Tls1.2; 
                ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12; //(SecurityProtocolType)768 | (SecurityProtocolType)3072
              
                ServicePointManager.CheckCertificateRevocationList = true;
                ServicePointManager.DefaultConnectionLimit = 100;
                ServicePointManager.Expect100Continue = false;
            }
            HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
            //增加下面兩個屬性即可  
            request.KeepAlive = false;
            request.ProtocolVersion = HttpVersion.Version10;
           
            request.Method = "GET";    //使用get方式傳送資料
            request.ContentType = "application/x-www-form-urlencoded";
            request.Referer = "";
            request.AllowAutoRedirect = true;
            request.UserAgent = "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.2; .NET CLR 1.1.4322; .NET CLR 2.0.50727)";
            request.Accept = "*/*";

            //獲取網頁響應結果
            HttpWebResponse response = (HttpWebResponse)request.GetResponse();
            //Thread.Sleep(2000);
            Stream stream = response.GetResponseStream();
            //client.Headers.Add("Content-Type", "application/x-www-form-urlencoded");
            string result = string.Empty;
            using (StreamReader sr = new StreamReader(stream))
            {
                result = sr.ReadToEnd();
            }

            if (request != null)
            {
                request.Abort();
            }

            if(response !=null)
            {
                response.Close();
            }

            return result;
        }