B4X Requires Chilkat v11.0.0+

Co:Z SFTP Binary File Download (from z/OS IBM Mainframe)

See more SFTP Examples

Demonstrates how to download a binary file, such as a .zip, from a Co:Z SFTP server on a z/OS IBM Mainframe. B4X

Dim success As Boolean = False

'  This example requires the Chilkat API to have been previously unlocked.
'  See Global Unlock Sample for sample code.

Dim sftp As ChilkatSFtp
sftp.Initialize("sftp")

'  Connect to the SSH server.  
Dim hostname As String = "sftp.example.com"
Dim port As Int = 22
success = sftp.Connect(hostname, port)
If success = False Then
    Log(sftp.LastErrorText)
    Return
End If


success = sftp.AuthenticatePw("myLogin", "myPassword")
If success = False Then
    Log(sftp.LastErrorText)
    Return
End If


success = sftp.InitializeSftp
If success = False Then
    Log(sftp.LastErrorText)
    Return
End If


'  To download a binary file from the Co:Z SFTP server, 
'  we must switch to binary mode in the following unconventional way.
'  We pretend to fetch a directory listing for "/+mode=binary"
'  This has the effect of putting the server in binary mode for transfers.
Dim handle As String = sftp.OpenDir("/+mode=binary")
If sftp.LastMethodSuccess = False Then
    Log(sftp.LastErrorText)
    Return
End If


'  Download the "directory listing" (but it's not actually a directory listing, and we'll just discard it.)

Dim dirListing As ChilkatSFtpDir
dirListing.Initialize
success = sftp.ReadDirListing(handle, dirListing)
If success = False Then
    Log(sftp.LastErrorText)
    Return
End If


'  Close the directory handle:
success = sftp.CloseHandle(handle)
If success = False Then
    Log(sftp.LastErrorText)
    Return
End If


'  Download the binary file:
Dim localFilePath As String = "c:/temp/test.zip"
Dim remoteFilePath As String = "test.zip"
success = sftp.DownloadFileByName(remoteFilePath, localFilePath)
If success = False Then
    Log(sftp.LastErrorText)
    Return
End If


Log("Success.")