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[109.58.155.143]) by smtp.gmail.com with ESMTPSA id i19sm1289105lfj.212.2021.01.07.09.06.27 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Thu, 07 Jan 2021 09:06:28 -0800 (PST) From: =?utf-8?Q?Mikkel_Fahn=C3=B8e_J=C3=B8rgensen?= Message-Id: Content-Type: multipart/alternative; boundary="Apple-Mail=_C6159068-6618-4FC9-875E-2943879FE633" Mime-Version: 1.0 (Mac OS X Mail 13.4 \(3608.120.23.2.4\)) Subject: Re: Robert Wilton's Discuss on draft-ietf-quic-transport-33: (with DISCUSS and COMMENT) Date: Thu, 7 Jan 2021 18:06:26 +0100 In-Reply-To: <75936877-0a6f-47ee-ab8e-6735e74c4882@www.fastmail.com> Cc: "Rob Wilton (rwilton)" , The IESG , Lars Eggert , quic@ietf.org, draft-ietf-quic-transport@ietf.org, WG Chairs To: Martin Thomson References: <160995499362.18437.16175887825588198380@ietfa.amsl.com> <75936877-0a6f-47ee-ab8e-6735e74c4882@www.fastmail.com> X-Mailer: Apple Mail (2.3608.120.23.2.4) Archived-At: X-BeenThere: quic@ietf.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Main mailing list of the IETF QUIC working group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 07 Jan 2021 17:06:33 -0000 --Apple-Mail=_C6159068-6618-4FC9-875E-2943879FE633 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii Spinning only works if both endpoints participate. One endpoint must = reflect the bit and the other must flip it every round trip. > On 7 Jan 2021, at 06.03, Martin Thomson wrote: >=20 >> 1) I find it hard to understand why a server is allowed to = independently decide >> whether or not to support the spin bit on a connection? Shouldn't = the client >> (or administrator of the client system) that opened the connection be = able to >> choose whether they want the RTT to be monitorable via the spin bit? = What is >> the reasoning for allowing the server (or server administrator) to be = able to >> independently be able to decide what is best for the client? >=20 > The consensus of the working group is that active spinning must be = made independently by either endpoint and that having an endpoint = dictate the actions of its peer for this feature was not desirable. = Hence the design as documented. --Apple-Mail=_C6159068-6618-4FC9-875E-2943879FE633 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=us-ascii Spinning only works if both endpoints participate. One = endpoint must reflect the  bit and the other must flip it every = round trip.

On 7 Jan 2021, at 06.03, Martin Thomson = <mt@lowentropy.net> wrote:

1) I = find it hard to understand why a server is allowed to independently = decide
whether or not to support the spin bit on a = connection?  Shouldn't the client
(or administrator = of the client system) that opened the connection be able to
choose whether they want the RTT to be monitorable via the = spin bit?  What is
the reasoning for allowing the = server (or server administrator) to be able to
independently= be able to decide what is best for the client?

The consensus of the working group is that active spinning = must be made independently by either endpoint and that having an = endpoint dictate the actions of its peer for this feature was not = desirable.  Hence the design as = documented.

= --Apple-Mail=_C6159068-6618-4FC9-875E-2943879FE633--