(Swift 3,4,5...) Using the FTP Session Log

The Chilkat FTP component can keep a session log if the KeepSessionLog property is turned on. This is helpful in debugging problems. Chilkat support will usually ask for a session log when working to resolve your problem, because it contains a log of the exact commands sent to the FTP server, and the exact responses received.

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func chilkatTest() {
    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    let ftp = CkoFtp2()!

    ftp.hostname = "ftp.example.com"
    ftp.username = "login"
    ftp.password = "password"

    // Set the KeepSessionLog property in order to keep a session log.
    // The session log will continuously grow in memory.  The
    // ClearSessionLog method may be called to clear it.  The session
    // logging may be turned on/off at any point.
    ftp.keepSessionLog = true

    // Connect and login to the FTP server.
    var success: Bool = ftp.connect()
    if success != true {
        print("\(ftp.lastErrorText!)")
        return
    }

    // Change to the remote directory where the existing file is located.
    success = ftp.changeRemoteDir("junk")
    if success != true {
        print("\(ftp.lastErrorText!)")
        return
    }

    // To clear the SessionLog at any point, call ClearSessionLog:
    // call ftp.ClearSessionLog();

    // Append moreHamlet.txt to hamlet.txt on the FTP server.
    var localFilename: String? = "moreHamlet.txt"
    var remoteFilename: String? = "hamlet.txt"

    success = ftp.appendFile(localFilename, remoteFilename: remoteFilename)
    if success != true {
        print("\(ftp.lastErrorText!)")
        return
    }

    success = ftp.disconnect()

    // Display the entire session log:
    print("\(ftp.sessionLog!)")

    print("File Appended!")

}