Ways to guess if C2DM is connected
问题 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 it is physically inaccessible. I understand that C2DM isn't guaranteed delivery, but I'd at least like to know when the delivery of a message is even possible; when it isn't we fall back to our own push service (and can actually tell when we're connected). I've noticed C2DM on android will still issue auth tokens even when there