Push Notification always gets a channel uri whether I use Identity from store or not

Question

I am trying to use push notification in my Windows 8.1 app using C#. I reserved an application name on Windows store, and used the Identity from the store. I faced a strange thing, When I open any new windows app project, and uses this code:
PushNotificationChannel PushNotificationChannel = await PushNotificationChannelManager.CreatePushNotificationChannelForApplicationAsync();
It always returns a valid PushNotificationChannel object with a Uri string. It shouldn't return this because I didn't use Identity from the store and didn't reserve an app name for it.
Also, every time I change the Publisher string value in appmanifest file, and undo the change, the returned channel Uri changed.
Very confusing two things:
First, the app that is NOT using Identity from store shouldn't return a push notification channel !!
Second, the app that uses Identity from store and has a reserved app name should always return the same Uri for the same Identity whether I changed Published string and undo the change !!
Can any one help in this please ??!!

Answer 1

Hi Ahmed,
>>First, the app that is NOT using Identity from store shouldn't return a push notification channel
Looks like there are some misconceptions here, ref to MSDN document:
https://msdn.microsoft.com/en-us/library/windows/apps/hh913756.aspx
Please focus on the first three steps in the complete data flow:
1. Your app sends a request for a push notification channel to the Notification Client Platform.
2. The Notification Client Platform asks WNS to create a notification channel. This channel is returned to the calling device in the form of a Uniform Resource Identifier (URI).
3. The notification channel URI is returned by Windows to your app.
So the request is made to the Notification Client Platform, which in turn requests the channel URI from WNS
So far, it has no relevance to Store Identity, thus you can receive notification channel through the CreatePushNotificationChannelForApplicationAsync method.
>>Second, the app that uses Identity from store and has a reserved app name should always return the same Uri for the same Identity whether I changed Published string and undo the change !!
Quote from the above reference:
We do not guarantee that the notification channel URI for an app will always remain the same. We advise that the app requests a new channel every time it runs and updates its service when the URI changes. The developer should never modify the channel
URI and should consider it as a black-box string. At this time, channel URIs expire after 30 days.
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