title: How to configure NSURLSession request's retry attempts on connection drop?
body: <p>I'm using NSURLSession for the networking. Testing in Charlesproxy with connections drop shows there are actually three requests are being sent instead of one.</p>
  
  <p>It looks like it is sort of NSURLSession low level work - if it determines connection drop, it will actually send several more requests before deciding there is really no network and calling delegate/block with failure.</p>
  
  <p>Just to prove my assumptions, I changed NSURLSessionConfiguration from defaultSessionConfiguration to backgroundSessionConfigurationWithIdentifier and it started to send even more requests (4) before calling delegate/block.</p>
  
  <p>This is not some issue in my opinion, just wondering wether it can be configured somehow.</p>