protected override void OnBackgroundActivated(BackgroundActivatedEventArgs args)
{
base.OnBackgroundActivated(args);
if (args.TaskInstance.TriggerDetails is AppServiceTriggerDetails details)
{
if (details.CallerPackageFamilyName == Package.Current.Id.FamilyName)
{
try
{
_appServiceDeferral = args.TaskInstance.GetDeferral();
args.TaskInstance.Canceled += (s, e) =>
{
_appServiceDeferral?.Complete();
_appServiceDeferral = null;
Connection = null;
AppServiceDisconnected?.Invoke(this, null);
};
Connection = details.AppServiceConnection;
AppServiceConnected?.Invoke(this, args.TaskInstance.TriggerDetails as AppServiceTriggerDetails);
_logger.Info("辅助进程服务连接成功");
}
catch (Exception ex)
{
_logger.Error("辅助进程服务连接失败");
_logger.Error(ex);
}
}
}
else
{
_logger.Error("辅助进程服务连接失败");
_logger.Error(args.TaskInstance.TriggerDetails.GetType());
}
}
//App Service
// see https://blogs.msdn.microsoft.com/appconsult/2016/12/19/desktop-bridge-the-migrate-phase-invoking-a-win32-process-from-a-uwp-app/
public static void OnAppServiceActivated(BackgroundActivatedEventArgs args)
{
IBackgroundTaskInstance taskInstance = args.TaskInstance;
AppServiceTriggerDetails details = (AppServiceTriggerDetails)args.TaskInstance.TriggerDetails;
appServiceDeferral = taskInstance.GetDeferral();
taskInstance.Canceled += OnAppServiceCanceled;
appServiceConnection = details.AppServiceConnection;
AppServiceConnected?.Invoke(null, null);
}
protected override void OnBackgroundActivated(BackgroundActivatedEventArgs args)
{
base.OnBackgroundActivated(args);
if (args.TaskInstance.TriggerDetails is AppServiceTriggerDetails details && details.CallerPackageFamilyName == Package.Current.Id.FamilyName)
{
AppServiceDeferral = args.TaskInstance.GetDeferral();
args.TaskInstance.Canceled += OnTaskCanceled;
Connection = details.AppServiceConnection;
AppServiceConnected?.Invoke(this, args.TaskInstance.TriggerDetails as AppServiceTriggerDetails);
}
}
protected override void OnBackgroundActivated(BackgroundActivatedEventArgs args)
{
// connection established from the fulltrust process
base.OnBackgroundActivated(args);
if (args.TaskInstance.TriggerDetails is AppServiceTriggerDetails details)
{
AppServiceDeferral = args.TaskInstance.GetDeferral();
args.TaskInstance.Canceled += OnTaskCanceled;
Connection = details.AppServiceConnection;
Connection.RequestReceived += OnRequestReceived;
AppServiceConnected?.Invoke(this, args.TaskInstance.TriggerDetails as AppServiceTriggerDetails);
}
}
protected override void OnBackgroundActivated(BackgroundActivatedEventArgs args)
{
if (args.TaskInstance.TriggerDetails is AppServiceTriggerDetails)
{
AppServiceDeferral = args.TaskInstance.GetDeferral();
args.TaskInstance.Canceled += OnTaskCanceled;
if (args.TaskInstance.TriggerDetails is AppServiceTriggerDetails details)
{
Connection = details.AppServiceConnection;
AppServiceConnected?.Invoke(this, null);
}
}
}
protected override void OnBackgroundActivated(BackgroundActivatedEventArgs args)
{
if (args.TaskInstance.TriggerDetails is AppServiceTriggerDetails)
{
// Hold deferral reference to make sure AppService connection is always alive
appServiceDeferral = args.TaskInstance.GetDeferral();
args.TaskInstance.Canceled += OnTaskCanceled; // Associate a cancellation handler with the background task.
if (args.TaskInstance.TriggerDetails is AppServiceTriggerDetails details)
{
connection = details.AppServiceConnection;
// Notify that connection between app and desktop server has been built
AppServiceConnected?.Invoke(this, null);
}
}
}
/// <summary>
/// Invoked when the application is launched to handle background task.
/// </summary>
/// <param name="args">Details about the launch request.</param>
protected override void OnBackgroundActivated(BackgroundActivatedEventArgs args)
{
base.OnBackgroundActivated(args);
AppServiceTriggerDetails details = args.TaskInstance.TriggerDetails as AppServiceTriggerDetails;
if (details != null)
{
// Hold deferral reference to make sure AppService connection is always alive
appServiceDeferral = args.TaskInstance.GetDeferral();
connection = details.AppServiceConnection;
// Notify that connection between app and desktop server has been built
AppServiceConnected?.Invoke(this, null);
}
}
protected override void OnBackgroundActivated(BackgroundActivatedEventArgs args)
{
base.OnBackgroundActivated(args);
if (args.TaskInstance.TriggerDetails is AppServiceTriggerDetails details)
{
// only accept connections from callers in the same package
if (details.CallerPackageFamilyName == Package.Current.Id.FamilyName)
{
// connection established from the fulltrust process
AppServiceDeferral = args.TaskInstance.GetDeferral();
args.TaskInstance.Canceled += OnTaskCanceled;
AppServiceConnection = details.AppServiceConnection;
AppServiceConnected?.Invoke(this, args.TaskInstance.TriggerDetails as AppServiceTriggerDetails);
}
}
}
public static void OnNewAppService(BackgroundActivatedEventArgs args, AppServiceTriggerDetails details)
{
if (details.CallerPackageFamilyName == Package.Current.Id.FamilyName)
{
// keep the deferal alive for allowing communications between processes
var appServiceDeferral = args.TaskInstance.GetDeferral();
var cts = new CancellationTokenSource();
//Complete deferal when background process is stopped
cts.Token.Register(() => appServiceDeferral.Complete());
args.TaskInstance.Canceled += delegate
{
cts.Cancel();
};
AppServiceConnected?.Invoke(null, Tuple.Create(details, cts));
}
}
