FtpWebRequest - The underlying connection as closed: An unexpected error has occurred on a receive
Hi Everyone
I am trying to upload a csv which at most has about 15 records to a ftp site but I am getting the error - The underlying connection as closed: An unexpected error occurred on a receive.
Does anyone have any suggestions on how to fix this error?
Using visual studio 2010
Thanks
public void SendFile(string filename) { string ftpServerIP = "ftp.test.org"; string ftpUserID = "Test"; string ftpPassword = "1234"; string ftpDirectory = "incoming"; FileInfo fileInf = new FileInfo(filename); string uri = "ftp://" + ftpServerIP + "/" + ftpDirectory; FtpWebRequest reqFTP; reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://" + ftpServerIP + "/" + ftpDirectory)); reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword); reqFTP.UsePassive = true; reqFTP.UseBinary = true; reqFTP.KeepAlive = false; reqFTP.Method = WebRequestMethods.Ftp.UploadFile; reqFTP.Timeout = 10000000; reqFTP.ReadWriteTimeout = 10000000; reqFTP.ContentLength = fileInf.Length; // The buffer size is set to 2kb int buffLength = 2048; 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(); strm.ReadTimeout = 9999999; strm.WriteTimeout = 9999999; // Read from the file stream 2kb at a time contentLen = fs.Read(buff, 0, buffLength); // Until 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(); } catch (Exception ex) { Console.WriteLine(ex.Message, "Upload Error"); } }
When you build the URI for the upload, it needs to include the filename, not simply the directory where you're going to put the file. This may be why you are receiving the error. Try including the filename also:
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