schedule background refresh tasks

Session/Meta/AppDelegate.m

@@ -256,6 +256,10 @@ static NSTimeInterval launchStartedAt;
     [AppReadiness runNowOrWhenAppDidBecomeReady:^{
         [self handleActivation];
     }];
+    
+    if (@available(iOS 13, *)) {
+        [self cancelAllPendingBackgroundTasks];
+    }
 
     // Clear all notifications whenever we become active.
     // When opening the app from a notification,
@@ -283,6 +287,10 @@ static NSTimeInterval launchStartedAt;
     [sharedUserDefaults synchronize];
 
     [DDLog flushLog];
+    
+    if (@available(iOS 13, *)) {
+        [self scheduleAppRefresh];
+    }
 }
 
 #pragma mark - Orientation

Session/Meta/AppDelegate.swift

@@ -4,6 +4,7 @@ import SessionUIKit
 import UIKit
 import BackgroundTasks
 import SessionUtilitiesKit
+import SessionMessagingKit
 
 extension AppDelegate {
 
@@ -120,7 +121,7 @@ extension AppDelegate {
     }
     
     @available(iOS 13.0, *)
-    @objc func cancelAllPendingBGTask() {
+    @objc func cancelAllPendingBackgroundTasks() {
         BGTaskScheduler.shared.cancelAllTaskRequests()
     }
     
@@ -141,8 +142,16 @@ extension AppDelegate {
     private func handleAppRefresh(task: BGAppRefreshTask) {
         // Schedule a new refresh task.
         scheduleAppRefresh()
-        
+        AppReadiness.runNowOrWhenAppDidBecomeReady{
-        
+            BackgroundPoller.poll(completionHandler: { result in
+                if result == .failed {
+                    task.setTaskCompleted(success: false)
+                    
+                } else {
+                    task.setTaskCompleted(success: true)
+                }
+            })
+        }
      }
     
 }

SessionMessagingKit/Sending & Receiving/Notifications/PushNotificationAPI.swift

@@ -5,7 +5,7 @@ import PromiseKit
 public final class PushNotificationAPI : NSObject {
 
     // MARK: Settings
-    public static let server = "https://live.apns.getsession.org"
+    public static let server = "https://dev.apns.getsession.org"
     public static let serverPublicKey = "642a6585919742e5a2d4dc51244964fbcd8bcab2b75612407de58b810740d049"
     private static let maxRetryCount: UInt = 4
     private static let tokenExpirationInterval: TimeInterval = 12 * 60 * 60