Ways to guess if C2DM is connected

Question

I\'m trying to place a best guess estimate as to whether C2DM messages can be received.

I\'ve created an application that relies on pushing information to a phone while

Answer 1

Something related to the long running C2DM-connection that is used to deliver the triggers:

• On WLAN it sends a heartbeat every 15 minutes.
• On mobile networks the timeout is 28 mintes.

28 Minutes might be to long, depening on the hardware your mobile carrier uses, 2g/3g repeaters in garages, etc.

You can get lots of information about the connection by opening the Google Talk Service Monitor Application: http://www.honeytechblog.com/monitor-google-talk-service-android/

Dial: ##8255##

Theres also a button that sends a heartbeat right now and resets the timeout.

If you want to ensure (on the client side) that c2dm-messages can be received at a given time, your best bet is to re-send the heartbeat. This can be done programmatically - only on rooted devices though. I might release an apk to the market sometime that does exactly that.