BlackBerry Push Development

[bbam]

I am using the push API in my app.  Sometimes despite returning a status of "Active" the push messages don't arrive.  I happened to notice in the device event logs that sometimes I am seeing posts to http://pushapi..../pd_subdereg... (the equivalent of PushApplicationRegistry.unregisterApplication) immediately after the status has returned "Active" even though I do not call that push api method in my app.

Is there some reason the push api would be calling unregister by itself? 

A google search led me to this link, https://developer.blackberry.com/html5/apis/blackberry.push.html, which states, "It is possible for the BlackBerry Push Service to automatically unregister a subscriber behind the scene." 

Could this be true?  If so, under what circumstances?

[crispyoz]

If you are basing your device application on the sample app the only time it will deregister automatically is if it detects a SIM change.  I would log a stack trace in the unregister command in PushController so you can see hwo it is being called.

hth

Chris

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[gbeukeboom]

A quick test you could do to verify if unregister is actually being called or whether it is showing in the logs for some other reason would be to perform a subscription query:

http://docs.blackberry.com/en/developers/deliverables/25167/Subscription_query_1461311_11.jsp

This will let you see if the PIN you are pushing to is currently subscribed.