1 files changed, 39 insertions, 0 deletions
diff --git a/pjsip-apps/src/pjsua/winrt/gui/uwp/VoipTasks/CallRtcTask.cs b/pjsip-apps/src/pjsua/winrt/gui/uwp/VoipTasks/CallRtcTask.cs
new file mode 100644
index 00000000..79f15b31
--- /dev/null
+++ b/pjsip-apps/src/pjsua/winrt/gui/uwp/VoipTasks/CallRtcTask.cs
@@ -0,0 +1,39 @@
+//*********************************************************
+//
+// Copyright (c) Microsoft. All rights reserved.
+// This code is licensed under the MIT License (MIT).
+// THIS CODE IS PROVIDED *AS IS* WITHOUT WARRANTY OF
+// ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING ANY
+// IMPLIED WARRANTIES OF FITNESS FOR A PARTICULAR
+// PURPOSE, MERCHANTABILITY, OR NON-INFRINGEMENT.
+//
+//*********************************************************
+using VoipTasks.Helpers;
+using Windows.ApplicationModel.Background;
+
+namespace VoipTasks
+{
+    public sealed class CallRtcTask : IBackgroundTask
+    {
+        BackgroundTaskDeferral _deferral;
+
+        public void Run(IBackgroundTaskInstance taskInstance)
+        {
+            _deferral = taskInstance.GetDeferral();
+
+            Current.RTCTaskDeferral = _deferral;
+            // Register for Task Cancel callback
+            taskInstance.Canceled += TaskInstance_Canceled;            
+        }
+
+        private void TaskInstance_Canceled(IBackgroundTaskInstance sender, BackgroundTaskCancellationReason reason)
+        {
+            if (_deferral != null)
+            {
+                _deferral.Complete();
+            }
+
+            Current.RTCTaskDeferral = null;
+        }
+    }
+}