Swift

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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Swift


func chilkatTest() {
    var success: Bool = false

    let ftp = CkoFtp2()!

    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 true): automatically send FEAT to discover server capabilities.
    ftp.autoFeat = true

    //  AutoSyst (default true): automatically send SYST after login to learn the server OS type.
    ftp.autoSyst = true

    //  AutoOptsUtf8 (default true): send OPTS UTF8 ON when the FEAT response advertises UTF8.
    ftp.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.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.password = "myPassword"

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

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

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


}