NSURLSession completion block not called

Question

var session = NSURLSession.sharedSession()
session.dataTaskWithRequest(urlRequest, 
                            completionHandler: {(data: NSData!, 
                             


        

Answer 1

So I tried calling it like this

session.dataTaskWithRequest(urlRequest, 
                        completionHandler: {(data: NSData!, 
                                             response: NSURLResponse!,                       
                                             error: NSError!) in
                                                  print(data)
                                                  print(response)
                                                  print(error)
                                           }).resume()

And it worked.

Seems like I have to call resume() on a default suspended session task.