No matter what I do, willBeginDelayedRequest is not called. The other delegate calls work perfectly.
Note that this is not even in a background capable app, it's the simple case ...
- run the app
- kill internet connectivity
- now send your api call or whatever
- see message "A"
- later turn on internet
- see message "C"
- :( you will never see message "B"
I've seen this behavior in many projects. How to get willBeginDelayedRequest working??
Delegate ...
class Main: UIViewController, CLLocationManagerDelegate, URLSessionTaskDelegate {code ..
func urlSession(_ session: URLSession, taskIsWaitingForConnectivity task: URLSessionTask) { print("(A) works perfectly - phone was offline when task was started")}// Doesn't seem to work ...func urlSession(_ session: URLSession, task: URLSessionTask, willBeginDelayedRequest request: URLRequest, completionHandler: @escaping (URLSession.DelayedRequestDisposition, URLRequest?) -> Void) { print("(B) this is never called, even when the command completes perfectly :/")}setting the delegate ...
let cfg = URLSessionConfiguration.defaultcfg.waitsForConnectivity = truelet task = URLSession(configuration: cfg).dataTask(with: request) { [weak self] (data, response, error) in ... ... print("(C) after net restored, this runs flawlessly")}task.delegate = ..task.resume()