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| Author | Forum: PowerTCP FTP for .NET Topic: Suggestions on dealing with errors during Put / Get |
| monty0018 From: oklahoma city, OK USA Posts: 6 Member Since: 12/03/03 |
posted December 3, 2003 12:27 PM How would you suggest dealing with a network error during a Put / Get? I have been testing Put'ing a file onto a server and in mid-put, unplugging my network cable. An exception is thrown but how would you suggest to properly catch this, handle it, and resubmit once connection is restored? |
Tony Priest From: Utica, NY USA Posts: 8466 Member Since: 04/11/00 |
posted December 3, 2003 12:39 PM Regarding catching handling: You would put the call inside a try...catch ( like we do in our samples) Regarding resubmitting: If the server supports restart, you can restart the transfer where it left off. Otherwise you would have to start over from the beginning. |
| monty0018 From: oklahoma city, OK USA Posts: 6 Member Since: 12/03/03 |
posted December 4, 2003 1:57 PM The problem I am having with this is that when I unplug my lan connection, the server I am connected to is still holding a lock on the file, therfore, I am unable to do anything soon after this happens. It takes AT LEAST 15 minutes for the lock to release. I am thinking this is a Windows problem, not an FTP server issue or client-side issue. Any experience with similar issues? |
| Tony Priest From: Utica, NY USA Posts: 8466 Member Since: 04/11/00 |
posted December 4, 2003 6:44 PM I haven't heard anything. Sorry. |
| monty0018 From: oklahoma city, OK USA Posts: 6 Member Since: 12/03/03 |
posted December 5, 2003 8:44 AM The basic code I'm using is below. Do you see anything I should be doing differently with my side of things? Private Sub btnPut_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnPut.Click Try 'Ftp1.Restart = True Ftp1.BeginPut(txtLocal.Text, txtRemote.Text, Nothing) lbStatus.Items.Add("Transfer of " & txtLocal.Text & " has begun.") Catch ex As Exception MsgBox(ex.ToString) End Try End Sub Private Sub TransferDone(ByVal sender As System.Object, ByVal e As Dart.PowerTCP.Ftp.FileEventArgs) Handles Ftp1.EndPut If e.Exception Is Nothing Then Timer1.Stop() lbStatus.Items.Add("Successfully transferred file " & e.File.LocalFileName) lbStatus.Items.Add("File now on server as " & e.File.RemoteFileName) lbStatus.Items.Add(e.File.Count & " bytes transferred") Else lbStatus.Items.Add("Error: " & e.Exception.ToString) Ftp1.Close() lbStatus.Items.Add("Restarting transfer") Timer1.Start() End If End Sub Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick If Ftp1.Busy Then lbStatus.Items.Add("Socket is busy, not resending anything.") Else lbStatus.Items.Add("Socket is free, resending") btnPut_Click(Me, e) End If End Sub |
| Tony Priest From: Utica, NY USA Posts: 8466 Member Since: 04/11/00 |
posted December 5, 2003 9:46 AM Nothing looks wrong there. If the server is locking the file, there isn't anything you can do about it at your end. |
| monty0018 From: oklahoma city, OK USA Posts: 6 Member Since: 12/03/03 |
posted December 5, 2003 10:00 AM That's what I figured. Thanks for all of your quick responses. |
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