I need to call 180 sequential serial GET request (After completion on one request will fire another request) and response time is 32 sec for each request, when App is in background mode and user locked iPhone. 180 * 32 = 5760 seconds == 96 min.
I have tried with NSURLSessionDataTask, after calling approx 120 request it will be in suspended state or some times iOS kills app itself. FYI, App is using VOIP and BLE services