Re: [tcpm] 793bis ready to go?

Wesley Eddy <wes@mti-systems.com> Tue, 04 May 2021 02:31 UTC

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From: Wesley Eddy <wes@mti-systems.com>
To: tcpm@ietf.org
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Subject: Re: [tcpm] 793bis ready to go?
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On 2/10/2021 7:14 PM, Yuchung Cheng wrote:
> I think it's ready. Kudos to Wes for the N-years-long effort to put
> this together!
>
> Minor:https://tools.ietf.org/html/draft-ietf-tcpm-rfc793bis-20#section-3.7.4
>
> The less clear part is the wording of "idle connections". Idleness can
> be interpreted in several ways: no recent rx, tx, or both {on the wire
> | on socket interface}. It'd be good to define more clearly. AFAIK
> implementations have different definitions already leading to
> different KA behaviors.


You're right the definition was only implicit in the text later on, so 
at the beginning of this section I've added:

             A TCP connection is said to be "idle" if for some long
             amount of time there have been no incoming segments 
received and
             there is no new or unacknowledged data to be sent.

How to configure that length of time is dealt with separately later on, 
so I think this should suffice.