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Author | Forum: PowerTCP FTP for .NET Topic: The message received was unexpected or badly formatted |
mbroniola mbroniola@compcareservices.com From: Long Beach, CA USA Posts: 3 Member Since: 01/24/12 |
posted January 24, 2012 1:15 PM Hello, I'm attempting to connect to sftp.am.gxsics.com however I am receiving this error message: Message: The message received was unexpected or badly formatted Source: Dart.PowerTCP.Ftp Stack Trace: at Dart.PowerTCP.Ftp.ai.Invoke(Delegate A_0, Object[] A_1) at Dart.PowerTCP.Ftp.Ftp.Invoke(FtpCommand command, String modifier) They require FTPS and I am passing in the implicit FTP security type. Here is my code: Protected WithEvents moFtp As Ftp Public Sub SetFTPSettings() Try moFtp = New Ftp() If moTradingPartner.FTPTransferType = TransferType.Ascii Then moFtp.FileType = FileType.Ascii Else moFtp.FileType = FileType.Image End If moFtp.Server = moTradingPartner.Ftphostaddress moFtp.Username = moTradingPartner.FtpuserName moFtp.Password = moTradingPartner.Ftppassword moFtp.Passive = moTradingPartner.FTPPassive moFtp.StoreType = StoreType.Replace moFtp.ServerPort = moTradingPartner.FTPPort If moTradingPartner.FTPSecurityTypeID > 0 Then moFtp.UseAuthentication = False ' So It Doesn't Try To Validate SSL Certificate moFtp.Security = moTradingPartner.FTPSecurityTypeID End If Catch oEx As Exception Compcare.Log.Logger.LogException(oEx) End Try End Sub Private Sub GenericFTPDownloadFiles() Try Dim oInboxFiles() As FtpFile Dim oFile As FtpFile Dim sRemoteFiles() As String Dim sRemoteFileName As String Dim oStream As StreamReader Dim sFileText As String Dim oDBFile As New File() Dim sDownloadDirectory As String sDownloadDirectory = moTradingPartner.Ftpdownloaddir If sDownloadDirectory Is Nothing Then sDownloadDirectory = "/" Else sDownloadDirectory = sDownloadDirectory.Trim() If sDownloadDirectory = "" Then sDownloadDirectory = "/" If sDownloadDirectory <> "" AndAlso sDownloadDirectory <> "/" Then moFtp.Invoke(FtpCommand.ChangeDir, moTradingPartner.Ftpdownloaddir) <-- Code generates error here End If I tried changing UseAuthentication = True and SecureProtocol = SecureProtocol.Auto but still received the same error. I also wired up the trace log but my I receive the error before the trace event fires. I confirmed the trace log is working when connecting to other FTP sites. One other thing I noticed was that when I connect manually using CoreFTP is I have to accept an SSL certificate before connecting. Also, in the CoreFTP log, this is sent before I log in: Connect socket #1124 to 204.90.130.188, port 6366... TLSv1, cipher TLSv1/SSLv3 (DHE-RSA-AES256-SHA) - 256 bit Let me know if you need more information. Thanks for your assistance. |
Nick B (Admin) From: Utica, NY USA Posts: 619 Member Since: 05/25/10 Extra Support Options Custom Application Development |
posted January 24, 2012 2:22 PM Hello, Are you able to successfully connect to your server using the included FTP ListView Client sample? You appear to be using an older version of the component. Does the issue present with the current version? You may download a trial here: http://www.dart.com/ptftpnet.aspx If your issue continues to present the FTP ListView Client included with version 4.4 of the component, please let me know what server software and version you're connecting to. ------ |
mbroniola mbroniola@compcareservices.com From: Long Beach, CA USA Posts: 3 Member Since: 01/24/12 |
posted January 25, 2012 10:42 AM Hi Nick, Sorry for the delayed response. I tried connecting using the ListView app and received this error: "Received an unexpected EOF or 0 bytes from the transport stream." ''' <summary> ''' Performs a List on a worker thread and marshals the listing to the UI thread. ''' (Executes independent of the UI thread so UI messages are not interrupted). ''' </summary> Private Sub listWorker(ByVal state As Object) 'Disable interface ftp.Marshal("", False) Dim parameters() As Object = CType(state, Object()) Dim remoteRoot As String = TryCast(parameters(0), String) Dim pattern As String = TryCast(parameters(1), String) If (Not ftp.Connected) Then ftp.Connect() <---Error here ftp.Authenticate() End If ftp.Marshal(ftp.List(remoteRoot, pattern, ListType.Full), remoteRoot, Nothing) 'Enable interface ftp.Marshal("", True) End Sub I asked what the party we are connecting to what server software and version we are connecting to and they only replied with their user user guide for setting up the connection. Could I e-mail you the guide and our login details for you to take a look? |
Nick B (Admin) From: Utica, NY USA Posts: 619 Member Since: 05/25/10 Extra Support Options Custom Application Development |
posted January 25, 2012 2:50 PM Hello, Does their user guide specify the FTP server software and version they're using? Yes, send those into support@dart.com. We'll try to reproduce your issue. ------ |
mbroniola mbroniola@compcareservices.com From: Long Beach, CA USA Posts: 3 Member Since: 01/24/12 |
posted January 26, 2012 11:37 AM Just checking in...were you able to reproduce the issue? The party we are connecting to has stated that the server software they are using is confidential. |
Nick B (Admin) From: Utica, NY USA Posts: 619 Member Since: 05/25/10 Extra Support Options Custom Application Development |
posted January 26, 2012 12:49 PM Hello, Yes, I replied to your email. |
Nick B (Admin) From: Utica, NY USA Posts: 619 Member Since: 05/25/10 Extra Support Options Custom Application Development |
posted March 5, 2012 11:49 AM The issue was that SSL 2.0 is disabled by default on most modern operating systems, and the server only supported SSL 2.0 Checking the box for SSL 2.0 in Internet Options will fix this: http://blogs.msdn.com/b/kaushal/archive/2011/10/02/support-for-ssl-tls-protocols-on-windows.aspx Or you may set HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\SSL 2.0\Client\DisabledByDefult to 0. |
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