public async void Terminate()
{
await IPHelperUtils.TerminateIPHelper(Connection);
}
protected override async void OnBackgroundActivated(BackgroundActivatedEventArgs args)
{
base.OnBackgroundActivated(args);
if (!(args.TaskInstance.TriggerDetails is AppServiceTriggerDetails))
{
return;
}
AppServiceConnection connection = ((AppServiceTriggerDetails)args.TaskInstance.TriggerDetails).AppServiceConnection;
var appServiceDeferral = args.TaskInstance.GetDeferral();
switch (connection.AppServiceName)
{
case "IPHelperService":
args.TaskInstance.Canceled += (sender, reason) =>
{
try
{
appServiceDeferral.Complete();
}
catch (Exception)
{ // ignored
}
};
if (Contexts.Count <= 0)
{
await IPHelperUtils.TerminateIPHelper(connection);
appServiceDeferral.Complete();
return;
}
var context = Contexts.First();
context.Connection = connection;
context.Deferral = appServiceDeferral;
args.TaskInstance.Canceled += (sender, reason) => context.DoFinal();
connection.RequestReceived += IPHelperUtils.ConnectionOnRequestReceivedAsync;
connection.ServiceClosed += IPHelperUtils.OnServiceClosed;
break;
case "IPDiscoverService":
args.TaskInstance.Canceled += (sender, reason) =>
{
try
{
appServiceDeferral.Complete();
}
catch (Exception)
{ // ignored
}
};
IPHelperUtils.GetIPFromMAC((result, last) =>
{
if (last)
{
appServiceDeferral.Complete();
}
if (result == null)
{
return(true);
}
connection.SendMessageAsync(new ValueSet {
["op"] = "result", ["addr"] = result
}).GetAwaiter()
.GetResult();
return(true);
});
connection.ServiceClosed += (sender, a) =>
{
try
{
appServiceDeferral.Complete();
}
catch (Exception)
{
//ignored
}
};
break;
default:
appServiceDeferral.Complete();
break;
}
}