User Profile

Our iOS app is using CallKit to receive VoIP notification and using Per App VPN to access custom HTTP REST API located in private network. VPN is required to access the custom HTTP REST API and to resolve the API server name. Currently we have issues with receiving notifications when the Per App VPN is not connected. After the notification is received and AppDelegate wakes up, the custom HTTP REST API calls are executed while waiting for the user's interaction. At the timing of this HTTP REST API Call , the server name resolution fails and the app crashes. From the user's point of view,Incoming Calling Report screen disappears in about 2 seconds. Expected results: HTTP REST API call to succeed and the app not to crash. I want to know following. Is the communication triggered by AppDelegate not subject to activation Per App VPN? The behavior of this phenomenon does not appear to activate Per App VPN. Is it possible to explicitly start VPN from App code and wait for it to ready?