Start and stop core in sync queue

Linphone/Contacts/ContactsManager.swift

@@ -41,9 +41,7 @@ final class ContactsManager: ObservableObject {
 	
 	private var friendListSuscription: AnyCancellable?
 	
-	private init() {
-		fetchContacts()
-	}
+	private init() {}
 	
 	func fetchContacts() {
 		coreContext.doOnCoreQueue { core in

Linphone/Core/CoreContext.swift

@@ -247,8 +247,6 @@ final class CoreContext: ObservableObject {
 				.sink { _ in
 					self.mCore.iterate()
 				}
-			
-			try? self.mCore.start()
 		}
 	}
 	
@@ -259,7 +257,7 @@ final class CoreContext: ObservableObject {
 	}
 	
 	func onEnterForeground() {
-		coreQueue.async {
+		coreQueue.sync {
 			// We can't rely on defaultAccount?.params?.isPublishEnabled
 			// as it will be modified by the SDK when changing the presence status
 		
@@ -270,7 +268,7 @@ final class CoreContext: ObservableObject {
 	}
 	
 	func onEnterBackground() {
-		coreQueue.async {
+		coreQueue.sync {
 			// We can't rely on defaultAccount?.params?.isPublishEnabled
 			// as it will be modified by the SDK when changing the presence status
 			Log.info("App is in background, un-PUBLISHING presence info")

Linphone/LinphoneApp.swift

@@ -144,6 +144,7 @@ struct LinphoneApp: App {
 			if newPhase == .active {
 				Log.info("Entering foreground")
 				coreContext.onEnterForeground()
+				ContactsManager.shared.fetchContacts()
 			} else if newPhase == .inactive {
 			} else if newPhase == .background {
 				Log.info("Entering background")