(Perl) SFTP Resume Download

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

Chilkat Perl Downloads Perl Module for Windows, MacOS, Linux, Alpine Linux, Solaris

use chilkat();

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

$sftp = chilkat::CkSFtp->new();

# Set some timeouts, in milliseconds:
$sftp->put_ConnectTimeoutMs(5000);
$sftp->put_IdleTimeoutMs(10000);

# Connect to the SSH server.  
# The standard SSH port = 22
# The hostname may be a hostname or IP address.
$hostname = "sftp.example.com";
$port = 22;
$success = $sftp->Connect($hostname,$port);
if ($success != 1) {
    print $sftp->lastErrorText() . "\r\n";
    exit;
}

# Authenticate with the SSH server.  Chilkat SFTP supports
# both password-based authenication as well as public-key
# authentication.  This example uses password authenication.
$success = $sftp->AuthenticatePw("myLogin","myPassword");
if ($success != 1) {
    print $sftp->lastErrorText() . "\r\n";
    exit;
}

# After authenticating, the SFTP subsystem must be initialized:
$success = $sftp->InitializeSftp();
if ($success != 1) {
    print $sftp->lastErrorText() . "\r\n";
    exit;
}

# Download the file:

$localFilePath = "c:/temp/hamlet.xml";
$remoteFilePath = "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.
$success = $sftp->ResumeDownloadFileByName($remoteFilePath,$localFilePath);
if ($success != 1) {
    print $sftp->lastErrorText() . "\r\n";
    exit;
}

print "Success." . "\r\n";