Perl

FTP Automatic Post-Connect Commands

Demonstrates the AutoFeat, AutoSyst, AutoOptsUtf8, and AutoXcrc properties, which control commands Chilkat issues automatically around connecting and transferring.

Background: Chilkat normally probes and adapts to a server on its own: AutoFeat discovers capabilities with FEAT, AutoSyst learns the OS type to parse legacy listings, and AutoOptsUtf8 enables UTF-8 filenames when the server advertises it. These are on by default and rarely worth changing. AutoXcrc is the exception worth enabling deliberately — it verifies each upload with the server's XCRC checksum, catching corruption automatically where supported.

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Chilkat2 Perl

use strict;
use warnings;
use Chilkat2;

my $ftp = Chilkat2::Ftp2->new;

$ftp->Hostname('ftp.example.com');
$ftp->Username('myFtpLogin');

# These auto-* properties control commands Chilkat sends automatically after connecting.  They
# are on/off by default as noted, and are rarely changed.

# AutoFeat (default 1): automatically send FEAT to discover server capabilities.
$ftp->AutoFeat(1);

# AutoSyst (default 1): automatically send SYST after login to learn the server OS type.
$ftp->AutoSyst(1);

# AutoOptsUtf8 (default 1): send OPTS UTF8 ON when the FEAT response advertises UTF8.
$ftp->AutoOptsUtf8(1);

# AutoXcrc (default 0): request an XCRC checksum after each upload and treat a mismatch as
# a failure, giving automatic post-upload verification where the server supports XCRC.
$ftp->AutoXcrc(1);

# Normally you would not hard-code the password in source.  You should instead obtain it
# from an interactive prompt, environment variable, or a secrets vault.
$ftp->Password('myPassword');

my $success = $ftp->Connect();
if (!$success) {
    print $ftp->LastErrorText, "\n";
    exit;
}

print "Connected with the configured automatic features.\n";

$success = $ftp->Disconnect();
if (!$success) {
    print $ftp->LastErrorText, "\n";
    exit;
}