A Chilkat method that returns an object must be checked for NULL ( also known as Nothing, nil, nada, etc. in other programming languages). A NULL return value indicates failure. In this case, check the contents of the object instance’s LastErrorText property. In Visual Basic 6.0, this is the error message you’d get when trying to dereference a NULL object […]
Here is an example for monitoring the progress of an SFTP file transfer: void sftp_OnPercentDone(object sender, Chilkat.PercentDoneEventArgs args) { progressBar1.Value = args.PercentDone; // To abort at any point, you may set args.Abort = true // args.Abort = true; } void sftp_OnAbortCheck(object sender, Chilkat.AbortCheckEventArgs args) { // See https://cknotes.com/?p=149 for more information about // using the AbortCheck event… } private void […]
The PercentDone event is called when the percentage completion increases by one or more points. To use events in VB6, Dim the variable WithEvents. Then name the event callback using the variable name. (You should already understand how to use VB6 events in general prior to using the Chilkat objects. A good VB6 book is “Programming Visual Basic 6.0” by […]
To upload a file via FTP to an HP3000 server, you would type something like this from an interactive FTP prompt: Put myfile.txt myfile;rec=-32,1,f,ascii;disc=250000 To duplicate this with Chilkat, call PutFile such that the remote filename is “myfile;rec=-32,1,f,ascii;disc=250000”. For example: // This is a C# example, but the same concept applies w/ using Chilkat in any of the supported // […]
SMTP (MailMan) Added the MailMan.SendMimeBytes method to allow for sending the exact MIME source of an email from a byte array. This is useful for emails that have 8bit encodings. (With ActiveX, byte arrays are passed as Variants containing a byte array.) This method is also useful for sending DKIM signed email, because the output of the Chilkat.Dkim signature creation […]
Two recent customer support issues prompted this post. In both cases, the error reported by the SFTP server was both lacking in information as well as somewhat misleading. One brand of server was: SSH-2.0-http://www.sshtools.com J2SSH [SERVER] The other was: SSH-2.0-WS_FTP-SSH_7.1 With the 1st SSH server, the following error occurred when trying to open a file: OpenFile: DllDate: Jun 10 2009 […]
RSA Fixed PEM to XML conversion so that XML is compatible with .NET Framework’s XML requirements. Fixed RSA key generation. In some cases, RSA generated keys were not valid. Verified key acceptance and signature matching between Chilkat, OpenSSL, and .NET MIME / DKIM Fixed DKIM and DomainKeys signature generation. Tested and verified DKIM / DomainKeys signatures in emails sent to […]
Question: I discovered that the program is trying to use the Computer System Username to instead of the username given in the program code to connect to the server. Answer: The Chilkat component is not trying to use the Computer System username. The LastErrorText will (almost) always include the process’s logged-on username in the beginning, along with other pieces of information […]
Question: I have an issue with the SFTP component. When using the GetFileSize32 it returns 4294967295 for a file with length of 1324 bytes. L When using the GetFileSizeStr it returns Nothing for a file with length of 1324 bytes. L Answer: GetFileSize32 returns -1 when it fails, so I suspect that if your variable is unsigned, -1 will appear […]
Here is an example: Dim WithEvents http As Chilkat.Http Private Sub http_OnPercentDone(ByVal sender As Object, ByVal args As Chilkat.PercentDoneEventArgs) Handles http.OnPercentDone ProgressBar1.Value = args.PercentDone End Sub Private Sub HttpDownloadTest() http = New Chilkat.Http() Dim success As Boolean ‘ Any string unlocks the component for the 1st 30-days. success = http.UnlockComponent(“Anything for 30-day trial”) If (success True) Then MsgBox(http.LastErrorText) Exit Sub […]