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I need further information about C2DM on android. The informations on http://code.google.com/intl/de-DE/android/c2dm/index.html are not clear about the background technology.
Which protocolls are used?
How does the Google server find my cell phone?
I need such informations.
You can get some info about C2DM internals from Google I/O 2010 video: Building push applications for Android