SFTP Resume Download

Demonstrates how to resume an SFTP download from a previous partial download.

Download Chilkat SSH / SFTP ActiveX

LOCAL loSftp
LOCAL lnSuccess
LOCAL lnPort
LOCAL lcHostname
LOCAL lcRemoteFilePath
LOCAL lcLocalFilePath

*  Important: It is helpful to send the contents of the
*  sftp.LastErrorText property when requesting support.

loSftp = CreateObject('Chilkat.SFtp')

*  Any string automatically begins a fully-functional 30-day trial.

lnSuccess = loSftp.UnlockComponent("Anything for 30-day trial")
IF (lnSuccess <> 1) THEN
    =MESSAGEBOX(loSftp.LastErrorText)
    QUIT
ENDIF

*  Set some timeouts, in milliseconds:
loSftp.ConnectTimeoutMs = 5000
loSftp.IdleTimeoutMs = 10000

*  Connect to the SSH server.
*  The standard SSH port = 22
*  The hostname may be a hostname or IP address.

lcHostname = "www.my-ssh-server.com"
lnPort = 22
lnSuccess = loSftp.Connect(lcHostname,lnPort)
IF (lnSuccess <> 1) THEN
    =MESSAGEBOX(loSftp.LastErrorText)
    QUIT
ENDIF

*  Authenticate with the SSH server.  Chilkat SFTP supports
*  both password-based authenication as well as public-key
*  authentication.  This example uses password authenication.
lnSuccess = loSftp.AuthenticatePw("myLogin","myPassword")
IF (lnSuccess <> 1) THEN
    =MESSAGEBOX(loSftp.LastErrorText)
    QUIT
ENDIF

*  After authenticating, the SFTP subsystem must be initialized:
lnSuccess = loSftp.InitializeSftp()
IF (lnSuccess <> 1) THEN
    =MESSAGEBOX(loSftp.LastErrorText)
    QUIT
ENDIF

*  Download the file:

lcLocalFilePath = "c:/temp/hamlet.xml"
lcRemoteFilePath = "subdir1/subdir2/hamlet.xml"
*  The ResumeDownloadFileByName method will check
*  the local file and begin downloading the remote file
*  at the appropriate point.  For example, if the local
*  file is already 215624 bytes long, it will begin downloading
*  the remote file at the 215625'th byte -- appending to
*  the local file.
lnSuccess = loSftp.ResumeDownloadFileByName(lcRemoteFilePath,lcLocalFilePath)
IF (lnSuccess <> 1) THEN
    =MESSAGEBOX(loSftp.LastErrorText)
    QUIT
ENDIF

=MESSAGEBOX("Success.")