(VB.NET UWP/WinRT) SFTP Sync Download Tree w/ Must-Match Filename Constraints

Demonstrates how synchronize a directory tree in the download direction, but only download files matching a set of wildcard filenames.

Note: This example requires Chilkat v9.5.0.76 or greater.

Chilkat Universal Windows Platform (UWP) / WinRT Downloads Chilkat for the Universal Windows Platform (UWP)

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

Dim sftp As New Chilkat.SFtp

Dim success As Boolean = Await sftp.ConnectAsync("my-ssh-server.com",22)
If (success = True) Then
    success = Await sftp.AuthenticatePwAsync("mySshLogin","mySshPassword")
End If

If (success = True) Then
    success = Await sftp.InitializeSftpAsync()
End If

If (success <> True) Then
    Debug.WriteLine(sftp.LastErrorText)
    Exit Sub
End If


' Possible synchronization modes are:
' mode=0: Download all files
' mode=1: Download all files that do not exist on the local filesystem.
' mode=2: Download newer or non-existant files.
' mode=3: Download only newer files. If a file does not already exist on the local filesystem, it is not downloaded from the server.
' mode=5: Download only missing files or files with size differences.
' mode=6: Same as mode 5, but also download newer files.

' This example will download all files, but only those files having filenames
' that match *.gif and *.eml

' Imagine our remote directory tree has these files and directories:

' 	accentedLatin1.txt
' 	accentedUtf8.txt
' 	alice.key
' 	anter_cert.pem
' 	chiliPepper.gif
' 	helloWorld.pdf
' 	abc/chiliPepper.gif
' 	abc/ghk/
' 	data/chiliPepper.gif
' 	data/xyz/dkimHtmlBody.txt
' 	data/xyz/dkimVerifyTest.eml
' 	data/xyz/emailForCreateDsn.eml
' 	text/frenchUtf8.txt
' 	text/helloWorld.txt
' 	text/PolishEmailBody.txt
' 	text/something/

' Indicate that we only want to create auto-create local directories (if needed)
' for the files that are actually downloaded.  If SyncCreateAllLocalDirs remains
' True, then the corresponding local directory is created for each remote directory
' traversed regardless of whether files within are downloaded.
sftp.SyncCreateAllLocalDirs = False

sftp.SyncMustMatch = "*.eml; *.gif"

Dim remoteDir As String = "syncDownloadTest/someDir"
Dim localDir As String = "qa_output"
Dim mode As Integer = 0
Dim recursive As Boolean = True
success = Await sftp.SyncTreeDownloadAsync(remoteDir,localDir,mode,recursive)
If (success <> True) Then
    Debug.WriteLine(sftp.LastErrorText)
    Exit Sub
End If


' The following files were downloaded:

' chiliPepper.gif
' abc/chiliPepper.gif
' data/chiliPepper.gif
' data/xyz/dkimVerifyTest.eml
' data/xyz/emailForCreateDsn.eml

Debug.WriteLine("Success.")