On 5 Oct 2017, at 10:54, Florian Schmaus <f...@geekplace.eu> wrote:
> 
> On 05.10.2017 11:20, Kevin Smith wrote:
>> I’m not sure that the sides need to agree on timeouts. As long as each side 
>> does sensible pinging (only when the stream is silent) and not blindly every 
>> X seconds, they can both satisfy whatever their own requirements are.> That 
>> effectively leads to the same result as negotiation,
> 
> No it does not.
> 
>> as the shorter timeout wins, pretty much.
> 
> Correct, which could lead to the pathological case where the server
> pings the mobile device while it is asleep, causing it to wake up.
> Agreeing on an inactivity timeout, as I described, would prevent that.
> Which is what you usually want in most cases where XMPP is used with a
> mobile client.

What you’re talking about there, then isn’t so much negotiation as instruction 
from the client to the server. Which might be appropriate in some circumstances.

/K

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