Restart/Resume FTP Download

Resume downloading a file from an FTP server.

Download Chilkat .NET for 2.0 Framework

Download Chilkat .NET for 1.0 / 1.1 Framework

Dim ftp As New Chilkat.Ftp2()

Dim success As Boolean

'  Any string unlocks the component for the 1st 30-days.
success = ftp.UnlockComponent("Anything for 30-day trial")
If (success <> true) Then
    MsgBox(ftp.LastErrorText)
    Exit Sub
End If


ftp.Hostname = "ftp.chilkatsoft.com"
ftp.Username = "****"
ftp.Password = "****"

'  Connect and login to the FTP server.
success = ftp.Connect()
If (success <> true) Then
    MsgBox(ftp.LastErrorText)
    Exit Sub
End If


'  Change to the remote directory where the file is located.
'  This step is only necessary if the file is not in the root directory
'  for the FTP account.
success = ftp.ChangeRemoteDir("temp")
If (success <> true) Then
    MsgBox(ftp.LastErrorText)
    Exit Sub
End If


'  To resume a download, it is assumed that the partial file
'  is already present on the local filesystem.
'  You only need to set the RestartNext property to resume
'  the download.  The Chilkat FTP component sets the resume
'  point by getting the existing size of the target (local) file.
ftp.RestartNext = true

Dim localFilename As String
localFilename = "big.zip"
Dim remoteFilename As String
remoteFilename = "big.zip"

'  Resume downloading...
success = ftp.GetFile(remoteFilename,localFilename)
If (success <> true) Then
    MsgBox(ftp.LastErrorText)
    Exit Sub
End If


ftp.Disconnect()

MsgBox("File Downloaded!")