CkPython

Check FTP Connection and Login Status

Demonstrates the connection-status properties ConnectVerified, LoginVerified, ConnectFailReason, and Greeting.

Background: When Connect fails, these properties separate the possible causes: ConnectVerified shows whether the TCP connection was established at all, LoginVerified whether authentication then succeeded, and ConnectFailReason gives a numeric code pinpointing the failure — far more actionable than a generic error for distinguishing, say, an unreachable host from a bad password. The Greeting captures the server's opening banner, sometimes useful for identifying the server or its policies.

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import sys
import chilkat

success = False

ftp = chilkat.CkFtp2()

ftp.put_Hostname("ftp.example.com")
ftp.put_Username("myFtpLogin")

#  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 != True):
    #  ConnectFailReason gives a numeric code describing why Connect failed.
    print("Connect failed, reason code: " + str(ftp.get_ConnectFailReason()))
    print(ftp.lastErrorText())
    sys.exit()

#  After a successful connect, these flags report what succeeded.
print("TCP connection verified: " + str(ftp.get_ConnectVerified()))
print("Login verified: " + str(ftp.get_LoginVerified()))

#  The Greeting property holds the server's initial greeting banner.
print("Server greeting: " + ftp.greeting())

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