PowerBuilder

Restart/Resume FTP Download

See more FTP Examples

Resume downloading a file from an FTP server. PowerBuilder

integer li_rc
integer li_Success
oleobject loo_Ftp
string ls_LocalFilename
string ls_RemoteFilename

li_Success = 0

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

loo_Ftp = create oleobject
li_rc = loo_Ftp.ConnectToNewObject("Chilkat.Ftp2")
if li_rc < 0 then
    destroy loo_Ftp
    MessageBox("Error","Connecting to COM object failed")
    return
end if

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

// Connect and login to the FTP server.
li_Success = loo_Ftp.Connect()
if li_Success <> 1 then
    Write-Debug loo_Ftp.LastErrorText
    destroy loo_Ftp
    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.
li_Success = loo_Ftp.ChangeRemoteDir("temp")
if li_Success <> 1 then
    Write-Debug loo_Ftp.LastErrorText
    destroy loo_Ftp
    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.
loo_Ftp.RestartNext = 1

ls_LocalFilename = "big.zip"
ls_RemoteFilename = "big.zip"

// Resume downloading...
li_Success = loo_Ftp.GetFile(ls_RemoteFilename,ls_LocalFilename)
if li_Success <> 1 then
    Write-Debug loo_Ftp.LastErrorText
    destroy loo_Ftp
    return
end if

li_Success = loo_Ftp.Disconnect()

Write-Debug "File Downloaded!"


destroy loo_Ftp