VB.NET

Create an FTP Upload Plan

Demonstrates the Chilkat Ftp2.CreatePlan method, which creates and returns a textual upload plan for a local directory. The only argument is the local directory. The object must be connected, because the plan records the current absolute remote directory together with the local source paths.

Note: The local paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

Background: A plan is a saved, resumable description of an upload — the list of local files and their absolute remote destinations — computed once and executed later (or on another run) with PutPlan. Separating planning from execution suits large or unreliable transfers: the plan can be reviewed, stored, and re-run, and because it records absolute remote paths it stays correct even if the working directory later changes.

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Dim success As Boolean = False

'  Demonstrates the Ftp2.CreatePlan method, which creates and returns a textual upload plan for a
'  local directory.  The only argument is the local directory.  The object must be connected,
'  because the plan records the current absolute remote directory.

Dim ftp As New Chilkat.Ftp2

ftp.Hostname = "ftp.example.com"
ftp.Username = "myFtpLogin"

'  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.
ftp.Password = "myPassword"

success = ftp.Connect()
If (success = False) Then
    Debug.WriteLine(ftp.LastErrorText)
    Exit Sub
End If


success = ftp.ChangeRemoteDir("public_html")
If (success = False) Then
    Debug.WriteLine(ftp.LastErrorText)
    Exit Sub
End If


'  The plan captures which local files to upload and the absolute remote destination.  Save it so
'  the upload can be run (or resumed) later with PutPlan.
Dim plan As String = ftp.CreatePlan("qa_data/site")
If (ftp.LastMethodSuccess = False) Then
    Debug.WriteLine(ftp.LastErrorText)
    Exit Sub
End If


'  Persist the plan text for later use.
Dim sbPlan As New Chilkat.StringBuilder
sbPlan.Append(plan)
success = sbPlan.WriteFile("qa_output/upload_plan.txt")
If (success = False) Then
    Debug.WriteLine(sbPlan.LastErrorText)
    Exit Sub
End If

Debug.WriteLine("Upload plan created.")

success = ftp.Disconnect()
If (success = False) Then
    Debug.WriteLine(ftp.LastErrorText)
    Exit Sub
End If