B4X

Disconnect from an SFTP Server

Demonstrates the Chilkat SFtp.Disconnect method, which closes the current SSH/SFTP connection. It takes no arguments. All remote file and directory handles from the session become invalid and must not be reused.

Background: Disconnecting releases the SSH transport and every SFTP handle opened on it. The object itself stays reusable, but a later session must repeat the full setup — Connect, authenticate, then InitializeSftp — because the SFTP subsystem does not survive a disconnect.

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Dim success As Boolean = False

'  Demonstrates the SFtp.Disconnect method, which closes the current SSH/SFTP connection.  It
'  takes no arguments.  All remote file and directory handles from the session become invalid.

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

'  Step 1: Connect the SSH transport.  Port 22 is the usual port.
Dim port As Int = 22
success = sftp.Connect("sftp.example.com", port)
If success = False Then
    Log(sftp.LastErrorText)
    Return
End If


'  Normally you would not hard-code the password in source.  You should instead obtain it
'  from an interactive prompt, environment variable, or a secrets vault.
Dim password As String = "mySshPassword"

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


'  Step 3: Open the SFTP subsystem.  This must be done after authentication and before any
'  file or directory operations.
success = sftp.InitializeSftp
If success = False Then
    Log(sftp.LastErrorText)
    Return
End If


'  ... perform SFTP operations ...

'  Close the connection.  The object remains reusable: a later session must Connect,
'  authenticate, and InitializeSftp again.
sftp.Disconnect