title: Is it possible to measure packet loss in an iOS app?
body: <p>I'm building a portion of an app that will require the user to download files of varying size.  Currently, I'm using Apple's Reachability code to let me know if I have a connection.<br>
  (<a href="http://developer.apple.com/library/ios/#samplecode/Reachability/Introduction/Intro.html" rel="nofollow">http://developer.apple.com/library/ios/#samplecode/Reachability/Introduction/Intro.html</a>)</p>
  
  <p>While the reachability code can keep track of 'having a connection', it doesn't have an ability to let me know of a worsening connection. It would seem that I need to expand on the functionality of the Apple code to meet my requirement.  Is it possible for me to measure the number or percentage of dropped packets during the data transfer?  This would be helpful so I could message the user and be able to pause or stop the download.</p>