I don't understand how the push tokens are supposed to be used with push to talk given that their lifetime is ephemeral and they become invalid as soon as a channel is left.
Suppose there is phone A and phone B, both with a PTT app installed on it.
Then on phone A if the user launches the app and, for example, pushes a button to initiate a talk session with user B, then the app on phone A will join a channel and this will result in receivedEphemeralPushToken() getting called.
Then if phone A sends that push token to the server, well then what next though? How is the user on phone B going to be informed that the user on phone A wants to talk to them.
The server can't send a push to phone B using that token because that's the token for phone A.
If the server has a token from phone B stored from previously, then the push isn't going to work because the documentation says the push token's lifetime is empemeral and will end as soon as the channel is left. So that channel for B's push token would have been left hours, or days or even months in the past.
Summary: if user A wants to talk to user B, how does user B's app get notified user A want's to talk to them if the push tokens' lifetimes are all ephemeral?
