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

[[e-mail]]

Hi 

Reading this. I understand that the proxy should be allowed to increase the Min SE. 

For my understanding.

Following that the UAS cannot lower it again. Correct?

That would be my understanding.

Best Regards

Roland

Am 04.10.2018 20:05 schrieb 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" rel="nofollow">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

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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