title: How to download FTP file in swift 3
body: <p>I am not able to download FTP file from server. Is there any ways to download.
   I have used URLSession but doesn't helped at all
  I have gone through this link <a href="http://sweettutos.com/2015/11/06/networking-in-swift-how-to-download-a-file-with-nsurlsession/" rel="nofollow noreferrer">http://sweettutos.com/2015/11/06/networking-in-swift-how-to-download-a-file-with-nsurlsession/</a> but doesn't working</p>