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micalg="sha-256"; protocol="application/x-pkcs7-signature"; boundary="=-S6Us2lN0Y01VqzkOjvik" MIME-Version: 1.0 X-OriginatorOrg: ericsson.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: HE1PR0702MB3772.eurprd07.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: c519a880-f9bb-4be2-1f0a-08d8b2e93942 X-MS-Exchange-CrossTenant-originalarrivaltime: 07 Jan 2021 08:50:02.9384 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 92e84ceb-fbfd-47ab-be52-080c6b87953f X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: RQ5+HX1yFql9nBh5MxDfOJ8VGC806iBqyfoPBmJmHtlEvhAUPiQ0KKJDYiUekPvIE3iq6zQG5Cd6ZYDmjpLf9Q0tZ+OW5Q+hm0fm6LQ6Yns= X-MS-Exchange-Transport-CrossTenantHeadersStamped: HE1PR0702MB3706 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 08:50:08 -0000 --=-S6Us2lN0Y01VqzkOjvik Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi, One comment from my perspective here.=20 On Wed, 2021-01-06 at 04:09 +0000, Lucas Pardue wrote: >=20 > > ---------------------------------------------------------------------- > > COMMENT: > > ---------------------------------------------------------------------- > >=20 > >=20 > > =3D=3D COMMENTS =3D=3D > >=20 > > Should the use of UDP transport be also an invariant ? I think that would be a very bad move. QUIC is designed for usage over UDP,= it is not strictly dependent on it. In the last call there was some discussion= to go the other way of rather being explicit about the requirements QUIC have = on lower layers. That was considered a change that was to substantial to be do= ne in the late stages.=20 However, QUIC from my perspective have very little dependency on lower laye= r(s) as it provides datagram delimiter, a basic path identification (UDP+IP), an= d service demultiplexing based on server side destination port(s).=20 Thus, I don't see that UDP would be an invariant, and from one perspective = IETF is already designing a protocol in MASQUE that defines how QUIC over QUIC c= an be done, where UDP is only emulated on part of the path.=20 Cheers Magnus --=-S6Us2lN0Y01VqzkOjvik Content-Type: application/x-pkcs7-signature; name="smime.p7s" Content-Disposition: attachment; filename="smime.p7s" Content-Transfer-Encoding: base64 MIAGCSqGSIb3DQEHAqCAMIACAQExDzANBglghkgBZQMEAgEFADCABgkqhkiG9w0BBwEAAKCCErYw ggX0MIID3KADAgECAg8BdlE9InYZOYLl1zGep4IwDQYJKoZIhvcNAQELBQAwRzELMAkGA1UEBhMC U0UxETAPBgNVBAoMCEVyaWNzc29uMSUwIwYDVQQDDBxFcmljc3NvbiBOTCBJbmRpdmlkdWFsIENB 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