(Swift 3,4,5...) PassiveUseHostAddr

Some FTP servers need this option for passive data transfers. In passive mode, the data connection is initiated by the client sending a PASV command to the FTP server, and the FTP server responds with the IP address and port number where it is listening for the client's connection request. When the PassiveUseHostAddr property is set, the IP address in the PASV response is discarded and the IP address of the remote endpoint of the existing control connection is used instead.

Chilkat Downloads for the Swift Programming Language MAC OS X (Cocoa) Objective-C/Swift Libs iOS Objective-C/Swift Libs

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"

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

    // Set the PassiveUseHostAddr property.
    ftp.passiveUseHostAddr = true

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

    // Upload a file.
    var localFilename: String? = "hamlet.xml"
    var remoteFilename: String? = "hamlet.xml"

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

    success = ftp.disconnect()

    print("File Uploaded!")

}