title: iOS library for download file & resume download
body: <p>I need to create a function to download a file &amp; resume it if it's disconnected.</p>
  
  <p>I looked at <a href="http://code.google.com/p/cocoaasyncsocket/" rel="nofollow">asyncsocket</a> library, but it doesn't provide a resuming capabilities.</p>
  
  <p>Are there any other library out there for this?</p>
  
  <p>Thanks.</p>