底層連接已關閉：服務器違反協議。 FTP

Question

我上傳我的文件使用下面的代碼，它工作正常，但一段時間它引發此錯誤「底層連接已關閉：服務器提交協議違規」，並停止進程，當我再次運行它上傳文件與解決任何問題。

我注意到的一件事，如果我運行這個過程上傳多個文件，然後我有時得到這個錯誤，如果我做少於5個文件，那麼它工作正常，任何想法在哪裏，我有什麼看它。

我在谷歌搜索沒有發現這個固體的解決方案，甚至有一個msdn博客說它在FTPwebrequest中的錯誤，但不知道。

環境：C＃4.0，IIS FTP服務器。

由於提前

   FileInfo fileInf = new FileInfo(filename); 
       FtpWebRequest reqFTP; 

       // Create FtpWebRequest object from the Uri provided 
       reqFTP = (FtpWebRequest)FtpWebRequest.Create 
         (new Uri(path + fileInf.Name)); 


       // Provide the WebPermission Credintials 
       reqFTP.Credentials = new NetworkCredential(user, pwd); 

       // By default KeepAlive is true, where the control connection 
       // is not closed after a command is executed. 
       reqFTP.KeepAlive = false; 


       // Specify the command to be executed. 
       reqFTP.Method = WebRequestMethods.Ftp.UploadFile; 

       // Specify the data transfer type. 
       reqFTP.UseBinary = true; 
       reqFTP.Timeout = -1; 
       reqFTP.UsePassive = true; 


       // Notify the server about the size of the uploaded file 
       reqFTP.ContentLength = fileInf.Length; 

       // The buffer size is set to 2kb 
       int buffLength = 4096; 
       byte[] buff = new byte[buffLength]; 
       int contentLen; 

       // Opens a file stream (System.IO.FileStream) to read the file 
       // to be uploaded 
       FileStream fs = fileInf.OpenRead(); 


       try 
       { 
        // Stream to which the file to be upload is written 
        Stream strm = reqFTP.GetRequestStream(); 

        // Read from the file stream 2kb at a time 
        contentLen = fs.Read(buff, 0, buffLength); 

        // Till Stream content ends 
        while (contentLen != 0) 
        { 
         // Write Content from the file stream to the FTP Upload 
         // Stream 
         strm.Write(buff, 0, contentLen); 
         contentLen = fs.Read(buff, 0, buffLength); 
        } 

        // Close the file stream and the Request Stream 
        strm.Close(); 
        fs.Close(); 
       } 

回答

reqFTP.KeepAlive = FALSE;到「真」來擺脫我的錯誤。

Answer 1

從reqFTP.KeepAlive = false更改;到「reqFTP.KeepAlive = True;」擺脫錯誤