在本地网络C#上传FTP文件

Question

在FTP服务器中上传文件时遇到问题。当我在我的计算机上运行FileZilla服务器（127.0.0.1）时，图像文件会成功上传。但我在同一网络中的另一台计算机上运行FileZilla服务器。（10.0.0.25）。我可以在这台计算机上创建目录，但我无法上传图像文件，尽管我的用户对此计算机有完全控制权。

 public bool Upload(Stream srcStream, string dstFilePath)
    {
         Create FtpWebRequest object from the Uri provided
        FtpWebRequest reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(serverUri + dstFilePath));
        reqFTP.Credentials = credential;
        reqFTP.Method = WebRequestMethods.Ftp.UploadFile;
        reqFTP.UseBinary = true;
        reqFTP.Proxy = null;
        reqFTP.UsePassive = false;
        reqFTP.KeepAlive = false;
        reqFTP.ContentLength = srcStream.Length;
        byte[] buff = new byte[UPLOAD_DOWNLOAD_BUFFER_SIZE];
        int contentLen;
        // Stream to which the file to be upload is written
            using (Stream dstStream = reqFTP.GetRequestStream())
            {
                // Read from the file stream 2kb at a time
                contentLen = srcStream.Read(buff, 0, UPLOAD_DOWNLOAD_BUFFER_SIZE);
                // Till Stream content ends
                while (contentLen != 0)
                {
                    // Write Content from the file stream to the FTP Upload Stream
                    dstStream.Write(buff, 0, contentLen);
                    contentLen = srcStream.Read(buff, 0, UPLOAD_DOWNLOAD_BUFFER_SIZE);
                }
                dstStream.Close();
            }
        }
        // Get the response to the upload request.
        bool ret;
        FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
        // ret = (response.StatusCode == FtpStatusCode.ClosingData);    // 
        response.Close();
        ret = (GetFileSize(dstFilePath) == srcStream.Length);
        return ret;
    }

当我将行9更改为reqFTP.UsePassive=true时，服务器返回（227进入被动模式（h1，h2，h3，h4，p1，p2））。现在它返回（500）语法错误，命令无法识别。会出现什么问题？感谢

Answer 1

我可以在防病毒软件运行时上传图像Filezilla。然而，当我使用我的代码块进行尝试时。它返回端口错误消息。防病毒程序停止后，一切正常。