Swift

Set a Remote FTP File's Last-Modified Time

Demonstrates the Chilkat Ftp2.SetRemoteFileDateTimeStr method, which sets the last-modified time of a remote file. The first argument is an RFC 822 date-time string and the second is the remote filename.

Background: An upload normally leaves the remote file stamped with the time it arrived, which loses the original modification time — a problem for backups, mirrors, and timestamp-based sync. This method restores it, and Chilkat converts the supplied time to UTC before sending a server-supported command (typically MFMT). Whether it is honored depends on the server implementing such a command and granting permission.

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Swift


func chilkatTest() {
    var success: Bool = false

    //  Demonstrates the Ftp2.SetRemoteFileDateTimeStr method, which sets the last-modified time of a
    //  remote file.  The 1st argument is an RFC 822 date-time string and the 2nd is the remote
    //  filename.

    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
    }

    //  Chilkat converts the date to UTC and sends a server-supported timestamp-setting command.
    success = ftp.setRemoteFileDateTimeStr(dateTimeStr: "Fri, 10 Jul 2026 20:15:30 -0600", remoteFilename: "public_html/report.pdf")
    if success == false {
        print("\(ftp.lastErrorText!)")
        return
    }

    print("Remote file timestamp set.")

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


}