c# – 尝试连接到sftp服务器时没有消息或超时

我正在使用EnterpriseDT.Net.Ftp库

我的代码是这样的：

XmlConfigurator.Configure();
      Module1.Logger = LogManager.GetLogger("SftpTester");
      try
      {
        Module1.Logger.Info((object) "[EnterpriseDT] - Start");
        Uri uri1 = new Uri("ftp://*****");
        // ISSUE: explicit reference operation
        // ISSUE: variable of a reference type
        Uri& uri2 = @uri1;
        int port = ****;
        string str1 = "******";
        // ISSUE: explicit reference operation
        // ISSUE: variable of a reference type
        string& UserName = @str1;
        string str2 = "*******";
        // ISSUE: explicit reference operation
        // ISSUE: variable of a reference type
        string& Password = @str2;
        SecureFTPConnection secureFtpConnection = Module1.InitConnection(uri2,port,UserName,Password);
        Module1.Logger.Info((object) "Connecting to ftp...");
        secureFtpConnection.Connect();
        Module1.Logger.Info((object) "Connection Successful!!!");
        try
        {
          Module1.Logger.Info((object) "Disposing connection...");
          secureFtpConnection.Dispose();
        }
        catch (Exception ex)
        {
          ProjectData.SetProjectError(ex);
          ProjectData.ClearProjectError();
        }
        Module1.Logger.Info((object) "Connection Disposed.");
      }
      catch (Exception ex)
      {
        ProjectData.SetProjectError(ex);
        Exception exception = ex;
        Module1.Logger.Error((object) ("Main() - " + exception.Message));
        Module1.Logger.Error((object) ("StackTrace: " + exception.StackTrace));
        if (exception.InnerException != null)
          Module1.Logger.Error((object) ("InnerException: " + exception.InnerException.Message));
        ProjectData.ClearProjectError();
      }
      finally
      {
        Module1.Logger.Info((object) "[EnterpriseDT] - End");
      }

  private static SecureFTPConnection InitConnection(ref Uri uri,int port,ref string UserName = "",ref string Password = "")
    {
      Module1.Logger.Info((object) "InitConnection() - Setting Up Connection");
      SecureFTPConnection secureFtpConnection = new SecureFTPConnection();
      secureFtpConnection.LicenSEOwner = "*******";
      secureFtpConnection.LicenseKey = "***********";
      secureFtpConnection.ServerAddress = uri.Host;
      Module1.Logger.Info((object) ("tHost: " + uri.Host));
      secureFtpConnection.UserName = UserName;
      Module1.Logger.Info((object) ("tUsername: " + UserName));
      secureFtpConnection.Protocol = FileTransferProtocol.SFTP;
      Module1.Logger.Info((object) ("tProtocol: " + FileTransferProtocol.SFTP.ToString()));
      secureFtpConnection.ServerValidation = SecureFTPServerValidationType.None;
      Module1.Logger.Info((object) ("tServerValidation: " + SecureFTPServerValidationType.None.ToString()));
      secureFtpConnection.AuthenticationMethod = AuthenticationType.Password;
      Module1.Logger.Info((object) ("tAuthenticationMethod: " + AuthenticationType.Password.ToString()));
      if (port > 0)
      {
        secureFtpConnection.ServerPort = port;
        Module1.Logger.Info((object) ("tServerPort: " + port.ToString()));
      }
      secureFtpConnection.Password = Password;
      Module1.Logger.Info((object) ("tPassword: " + Password));
      return secureFtpConnection;
    }

日志消息：

2014-09-27 04:50:22,783 [1] - [SftpTester] [EnterpriseDT] - Start
2014-09-27 04:50:22,799 [1] - [SftpTester] InitConnection() - Setting Up Connection
2014-09-27 04:50:22,971 [1] - [SftpTester] Host: *******
2014-09-27 04:50:22,971 [1] - [SftpTester] Username: *****
2014-09-27 04:50:22,971 [1] - [SftpTester] Protocol: SFTP
2014-09-27 04:50:22,971 [1] - [SftpTester] ServerValidation: None
2014-09-27 04:50:22,971 [1] - [SftpTester] AuthenticationMethod: Password
2014-09-27 04:50:22,971 [1] - [SftpTester] ServerPort: ****
2014-09-27 04:50:22,971 [1] - [SftpTester] Password: ******
2014-09-27 04:50:22,971 [1] - [SftpTester] Connecting to ftp...

不知道这是超时错误还是我在黑名单？

更新07/10/2014

服务器序列：

>密码验证
>等待包
>包到了
> Auth部分成功.尝试：密码,公钥,键盘交互
>键盘交互式身份验证
>等待包
>包到了
>提示：密码：
>等待包
>包到了
> Auth部分成功.尝试：密码,键盘交互
>等待包
>包到了
>提示：密码：
>循环(9到15)

更新

更新库解决问题,是一个错误.

版本8.6.1
(2014年9月23日)
修复了导致认证尝试循环的kbi重入错误.
修复了SFTP错误,其中将文件上载到不存在的目录时未引发异常.
修复了OpenVMS SFTP服务器未被识别为SSH的SFTP问题.
修复了重试下载问题,其中只进行了一次重新连接.
修复了使用FTPS在某些2012 R2计算机上“尝试读取或写入受保护内存”问题.