CkPython

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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CkPython

import sys
import chilkat

success = False

ftp = chilkat.CkFtp2()

ftp.put_Hostname("ftp.example.com")
ftp.put_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 True): automatically send FEAT to discover server capabilities.
ftp.put_AutoFeat(True)

#  AutoSyst (default True): automatically send SYST after login to learn the server OS type.
ftp.put_AutoSyst(True)

#  AutoOptsUtf8 (default True): send OPTS UTF8 ON when the FEAT response advertises UTF8.
ftp.put_AutoOptsUtf8(True)

#  AutoXcrc (default False): 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.put_AutoXcrc(True)

#  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.put_Password("myPassword")

success = ftp.Connect()
if (success == False):
    print(ftp.lastErrorText())
    sys.exit()

print("Connected with the configured automatic features.")

success = ftp.Disconnect()
if (success == False):
    print(ftp.lastErrorText())
    sys.exit()