VB.NET

Execute an FTP Upload Plan

Demonstrates the Chilkat Ftp2.PutPlan method, which executes a previously created upload plan. The first argument is the plan text and the second is the local path of a completion log that records each successful operation.

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: The completion log is what makes plan execution resumable: each successful upload is recorded, so if a run is interrupted, re-executing the same plan skips the operations already logged and continues where it left off — invaluable for a large transfer over a flaky connection. The plan's stored absolute remote paths are used regardless of the current remote directory, so execution is independent of session state.

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VB.NET

Dim success As Boolean = False

'  Demonstrates the Ftp2.PutPlan method, which executes a previously created upload plan.  The 1st
'  argument is the plan text and the 2nd is the local path of a completion log.

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


'  Load a plan that was previously created with CreatePlan.
Dim sbPlan As New Chilkat.StringBuilder
success = sbPlan.LoadFile("qa_output/upload_plan.txt","utf-8")
If (success = False) Then
    Debug.WriteLine(sbPlan.LastErrorText)
    Exit Sub
End If

Dim plan As String = sbPlan.GetAsString()

'  Execute the plan.  Each successful operation is recorded in the completion log, which lets an
'  interrupted run be resumed without repeating completed uploads.  The plan uses its stored
'  absolute remote paths even if the current remote directory has changed.
success = ftp.PutPlan(plan,"qa_output/upload_done.log")
If (success = False) Then
    Debug.WriteLine(ftp.LastErrorText)
    Exit Sub
End If

Debug.WriteLine("Upload plan executed.")

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