Subject: Re: [Ice] 5245bis: Selected pair clarification - Pull Request

From: Christer Holmberg <[email-masked]>
Date: Wed, 18 Oct 2017 07:58:52 +0000

Hi,

I have created a PR which is meant to clean up the “selected pair” concept.

https://github.com/ice-wg/rfc5245bis/pull/48

Regards,

Christer

From: Ice <[email-masked]<mailto:[email-masked]>> on behalf of Christer Holmberg <[email-masked]<mailto:[email-masked]>>
Date: Friday 13 October 2017 at 10:07
To: "[email-masked]<mailto:[email-masked]>" <[email-masked]<mailto:[email-masked]>>
Subject: [Ice] 5245bis: Selected pair clarification

Hi,

I am working on a PR to clarify “selected pair”.

Previously my assumption was that a candidate pair becomes selected once the nomination binding request succeeds.

However, when looking closer at the text, it seems like pairs becomes selected once a pair for every component associated with a media stream has been successfully nominated.

So, in case you have components for both RTP and RTCP, you need to successfully nominate pairs for both before they become selected.

My assumption above is based on the following text in section 7.1.1:

   "Eventually, if the nominations succeed, there will be only a single
   nominated pair in the VALID LIST for each component.  Once the state
   of the CHECK LIST is set to Completed, that exact pair is selected by
   ICE for sending and receiving media for that component.”

And, as described in section 7.1.2, the state of the check list is set to Completed once there is a nominated pair for each component.

Do people share the understanding above?

Regards,

Christer