Comments (5)
'If a provider attempts to deliver a push notification to an application, but
the application no longer exists on
the device, the device reports that fact to Apple Push Notification Service.
This situation often happens when
the user has uninstalled the application. If a device reports failed-delivery
attempts for an application, APNs
needs some way to inform the provider so that it can refrain from sending
notifications to that device. Doing
this reduces unnecessary message overhead and improves overall system
performance.
For this purpose Apple Push Notification Service includes a feedback service
that APNs continually updates
with a per-application list of devices for which there were failed-delivery
attempts. The devices are identified
by device tokens encoded in binary format. Providers should periodically query
the feedback service to get the
list of device tokens for their applications, each of which is identified by
its topic. Then, after verifying that the
application hasn’t recently been re-registered on the identified devices, a
provider should stop sending
notifications to these devices.
Access to the feedback service takes place through a binary interface similar
to that used for sending push
notifications. You access the production feedback service via
feedback.push.apple.com, port 2196; you access
the sandbox feedback service via feedback.sandbox.push.apple.com, port 2196. As
with the binary interface
for push notifications, you should use TLS (or SSL) to establish a secured
communications channel. The SSL
certificate required for these connections is the same one that is provisioned
for sending notifications. To
establish a trusted provider identity, you should present this certificate to
APNs at connection time using
peer-to-peer authentication.
Once you are connected, transmission begins immediately; you do not need to
send any command to APNs.
Begin reading the stream written by the feedback service until there is no more
data to read. The received data
is in tuples having the following format:
time, token length, token id'
This would indicate to me that there is no way to discern between failed
connectivity issue and a removed app.
Original comment by [email protected]
on 27 Apr 2010 at 4:33
from javapns.
Original comment by [email protected]
on 27 Apr 2010 at 4:36
- Changed state: New
- Added labels: Priority-Low, Type-Enhancement
- Removed labels: Priority-Medium, Type-Defect
from javapns.
very clear!
Thanks
Original comment by [email protected]
on 27 Apr 2010 at 9:39
from javapns.
Original comment by [email protected]
on 27 Apr 2010 at 10:42
- Changed state: WontFix
from javapns.
FYI, There was a company called Pinch Media, that recently became Flurry:
Analytics that would track app installs.
http://www.flurry.com/product/analytics/index.html
Now for the down side... Apple's new policy doesn't allow any analytics so that
won't work... but that would
indicate that Apple is gearing up provide their own version.
Bill
Original comment by [email protected]
on 28 Apr 2010 at 10:04
from javapns.
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