On Sat, 2019-03-30 at 16:54 +0200, Juha Heinanen wrote: > > I cannot tell, since my phones as behind NATs. All I care is that > they > respond to SIP requests as long as the foreground service is running > even when the activities have been killed.
Which would most likely mean they are pingable. So your phone seems to answer all IP packets while sleeping. So in that case, TCP would be a workable solution. > Must stay alive. Otherwise they would not be able to respond to SIP > requests. Indeed. > Is it really "wake up" of "wake up Linphone"? It's "wake up whatever has has 'this token'". I don't think FCM knows that it's Linphone specifically. > Also, Google knows where > the wakeup request came from. Sure. > Not always, but often enough. Not everyone is. Cheers, b.
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