Do GCM CCS Upstream Messages force a re-connection to the GCM network?

Question

I am having some issues with GCM push notifications not arriving properly on Android devices. After days of research I found out, that Android Devices use a heartbeat to kee

Answer 1

You can read the full description of the problem here:

https://productforums.google.com/forum/#!msg/nexus/fslYqYrULto/lU2D3Qe1mugJ

In few words, the problem is the tcp idle timeout caused by some routers or mobile carriers.