Re: [sipcore] Session-timer: Result below an acceptable value

[Christer Holmberg <[e-mail]>]

Hi,


In order to keep track of the suggested RFC modifications, I suggest that we create GitHub issues.


As an example, I created one for Shinji's suggestion to allow a proxy to increase the Min-SE header field value.


https://github.com/cdh4u/draft-sessiontimer-race/issues/1


(As always, any formal decision whether to modify something will be made on the list)


Regards,


Christer




________________________________
From: sipcore <[e-mail]> on behalf of Christer Holmberg <[e-mail]>
Sent: Thursday, October 4, 2018 2:43 PM
To: Roman Shpount
Cc: OKUMURA Shinji; SIPCORE
Subject: Re: [sipcore] Session-timer: Result below an acceptable value


Hi,


Sorry, I read your first e-mail wrong: I thought you said that the proxy would DECREASE Min-SE. But, now I see that you talk about INCREASE 😊


I see no reason why a proxy couldn't increase Min-SE.


As we have learned, the main users of session timer are proxies, not UAs, so a UA should not care if the minimum value is increased.

>Technically speaking UA still care about how often they need to generate refresh since this can result in extra load on the UA.

Sure, but increasing the Min-SE value will not result in extra load - on the contrary it may reduce load :)

>When session timer is negotiated, S-E specifies the max acceptable value and Min-SE specifies min acceptable value, so proxy should be able to increase Min-SE and decrease SE.

Correct.

Regards,

Christer