title: NSURLRequest returns NSURLErrorNetworkConnectionLost but reachability says the network connection is on
body: <p>In my app I'm downloading big video files in a row and sometimes my http request fails and reports that <code>NSError</code> code is -1005, which is <code>NSURLErrorNetworkConnectionLost</code>. I check internet connection through <code>Reachability</code> class and it says that its current status is not <code>NotReachable</code>. What can be a reason for that? What can make a request fail? Any ideas, guys? </p>