Swift

Clear the FTP Session Log

Demonstrates the Chilkat Ftp2.ClearSessionLog method, which clears the in-memory FTP protocol log collected while KeepSessionLog is enabled. It takes no arguments.

Background: With session logging on, the SessionLog accumulates the full FTP command/reply conversation, which is invaluable for diagnosing a failed transfer. Over a long-lived session it grows unbounded, so clearing it frees memory — and, more usefully, lets you capture the log for one specific operation in isolation by clearing just before and reading just after.

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func chilkatTest() {
    var success: Bool = false

    //  Demonstrates the Ftp2.ClearSessionLog method, which clears the in-memory FTP protocol log.  It
    //  takes no arguments and is a void method.

    let ftp = CkoFtp2()!

    ftp.hostname = "ftp.example.com"
    ftp.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.password = "myPassword"

    success = ftp.connect()
    if success == false {
        print("\(ftp.lastErrorText!)")
        return
    }

    //  The SessionLog accumulates the FTP protocol conversation when KeepSessionLog is enabled, which
    //  is useful for debugging.
    ftp.keepSessionLog = true

    //  ... perform some operations ...

    //  Clear the log, for example before starting a new logical operation whose log you want to
    //  capture in isolation.
    ftp.clearSessionLog()
    print("Session log cleared.")

    success = ftp.disconnect()
    if success == false {
        print("\(ftp.lastErrorText!)")
        return
    }


}