Tcl

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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Tcl


load ./chilkat.dll

set success 0

set ftp [new_CkFtp2]

CkFtp2_put_Hostname $ftp "ftp.example.com"
CkFtp2_put_Username $ftp "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.
CkFtp2_put_AutoFeat $ftp 1

#  AutoSyst (default 1): automatically send SYST after login to learn the server OS type.
CkFtp2_put_AutoSyst $ftp 1

#  AutoOptsUtf8 (default 1): send OPTS UTF8 ON when the FEAT response advertises UTF8.
CkFtp2_put_AutoOptsUtf8 $ftp 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.
CkFtp2_put_AutoXcrc $ftp 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.
CkFtp2_put_Password $ftp "myPassword"

set success [CkFtp2_Connect $ftp]
if {$success == 0} then {
    puts [CkFtp2_lastErrorText $ftp]
    delete_CkFtp2 $ftp
    exit
}

puts "Connected with the configured automatic features."

set success [CkFtp2_Disconnect $ftp]
if {$success == 0} then {
    puts [CkFtp2_lastErrorText $ftp]
    delete_CkFtp2 $ftp
    exit
}


delete_CkFtp2 $ftp