B4X

Restart/Resume FTP Download

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Resume downloading a file from an FTP server. B4X

Dim success As Boolean = False

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

Dim ftp As ChilkatFtp2
ftp.Initialize("ftp")

ftp.Hostname = "ftp.example.com"
ftp.Username = "login"
ftp.Password = "password"

'  Connect and login to the FTP server.
success = ftp.Connect
If success <> True Then
    Log(ftp.LastErrorText)
    Return
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
    Log(ftp.LastErrorText)
    Return
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 = "big.zip"
Dim remoteFilename As String = "big.zip"

'  Resume downloading...
success = ftp.GetFile(remoteFilename, localFilename)
If success <> True Then
    Log(ftp.LastErrorText)
    Return
End If


success = ftp.Disconnect

Log("File Downloaded!")