/// <summary>
/// Associate the cancellation handler with the background task
/// </summary>
private void OnAppServicesCanceled(IBackgroundTaskInstance sender, BackgroundTaskCancellationReason reason, int index)
{
ConnectionDeferral app_dc = null;
ConnectionDeferral desktop_dc = null;
lock (thisLock)
{
if (connectionMap.ContainsKey(index))
{
app_dc = connectionMap[index];
connectionMap.Remove(index);
}
if (desktopConnectionMap.ContainsKey(index))
{
desktop_dc = desktopConnectionMap[index];
desktopConnectionMap.Remove(index);
}
if (taskCompletionSourceMap.ContainsKey(index))
{
taskCompletionSourceMap[index].TrySetResult(false);
}
}
if (app_dc != null)
{
app_dc.connection.Dispose();
app_dc.deferral.Complete();
}
if (desktop_dc != null)
{
desktop_dc.connection.Dispose();
desktop_dc.deferral.Complete();
}
}
/// <summary>
/// Occurs when the other endpoint closes the connection to the app service
/// </summary>
private void OnConnectionClosed(AppServiceConnection sender, AppServiceClosedEventArgs args, int index)
{
ConnectionDeferral app_dc = null;
ConnectionDeferral desktop_dc = null;
lock (thisLock)
{
if (connectionMap.ContainsKey(index))
{
app_dc = connectionMap[index];
connectionMap.Remove(index);
}
if (desktopConnectionMap.ContainsKey(index))
{
desktop_dc = desktopConnectionMap[index];
desktopConnectionMap.Remove(index);
}
if (taskCompletionSourceMap.ContainsKey(index))
{
taskCompletionSourceMap[index].TrySetResult(false);
}
}
if (app_dc != null)
{
app_dc.connection.Dispose();
app_dc.deferral.Complete();
}
if (desktop_dc != null)
{
desktop_dc.connection.Dispose();
desktop_dc.deferral.Complete();
}
}
/// <summary>
/// Receives message from Extension (via Edge)
/// </summary>
private async Task OnAppServiceRequestReceived(AppServiceConnection sender, AppServiceRequestReceivedEventArgs args, int index)
{
AppServiceDeferral messageDeferral = args.GetDeferral();
try
{
TaskCompletionSource <bool> tcs = null;
ConnectionDeferral cd = null;
lock (thisLock)
{
if (desktopConnectionMap.ContainsKey(index))
{
cd = desktopConnectionMap[index];
}
else
{
tcs = new TaskCompletionSource <bool>();
taskCompletionSourceMap.Add(index, tcs);
}
}
if (tcs != null)
{
await tcs.Task;
lock (thisLock)
{
if (!desktopConnectionMap.ContainsKey(index))
{
return;
}
cd = desktopConnectionMap[index];
}
}
var desktopConnection = cd.connection;
// Send message to the desktopBridge component and wait for response
AppServiceResponse desktopResponse = await desktopConnection.SendMessageAsync(args.Request.Message);
await args.Request.SendResponseAsync(desktopResponse.Message);
}
finally
{
messageDeferral.Complete();
}
}
/// <summary>
/// Initializes the app service on the host process
/// </summary>
protected async override void OnBackgroundActivated(BackgroundActivatedEventArgs args)
{
base.OnBackgroundActivated(args);
IBackgroundTaskInstance taskInstance = args.TaskInstance;
if (taskInstance.TriggerDetails is AppServiceTriggerDetails)
{
var appService = taskInstance.TriggerDetails as AppServiceTriggerDetails;
if (appService.CallerPackageFamilyName == Windows.ApplicationModel.Package.Current.Id.FamilyName) // App service connection from desktopBridge App
{
var desktopBridgeDeferral = taskInstance.GetDeferral();
var desktopConnection = appService.AppServiceConnection;
var connectionDeferral = new ConnectionDeferral(desktopConnection, desktopBridgeDeferral);
int index;
lock (thisLock)
{
index = desktopConnectionIndex;
desktopConnectionIndex++;
desktopConnectionMap.Add(index, connectionDeferral);
}
taskInstance.Canceled += (s, a) => {
OnAppServicesCanceled(s, a, index);
};
desktopConnection.RequestReceived += async(s, a) => {
await OnDesktopAppServiceRequestReceived(s, a, index);
};
desktopConnection.ServiceClosed += (s, a) => {
OnConnectionClosed(s, a, index);
};
lock (thisLock)
{
if (taskCompletionSourceMap.ContainsKey(index))
{
taskCompletionSourceMap[index].TrySetResult(true);
}
}
}
else // App service connection from Edge browser
{
// Microsoft.MicrosoftEdge_8wekyb3d8bbwe
var appServiceDeferral = taskInstance.GetDeferral();
var connection = appService.AppServiceConnection;
var connectionDeferral = new ConnectionDeferral(connection, appServiceDeferral);
int index;
lock (thisLock)
{
index = connectionIndex;
connectionIndex++;
connectionMap.Add(index, connectionDeferral);
}
taskInstance.Canceled += (s, a) => {
OnAppServicesCanceled(s, a, index);
};
connection.RequestReceived += async(s, a) => {
await OnAppServiceRequestReceived(s, a, index);
};
connection.ServiceClosed += (s, a) => {
OnConnectionClosed(s, a, index);
};
try
{
// Make sure the tortoise_svn_opener.exe is in your AppX folder, if not rebuild the solution
await Windows.ApplicationModel.FullTrustProcessLauncher.LaunchFullTrustProcessForCurrentAppAsync();
}
catch (Exception)
{
lock (thisLock)
{
if (connectionMap.ContainsKey(index))
{
connectionMap[index].connection.Dispose();
connectionMap[index].deferral.Complete();
connectionMap.Remove(index);
}
if (taskCompletionSourceMap.ContainsKey(index))
{
taskCompletionSourceMap[index].TrySetResult(false);
}
}
}
}
}
}
