One-way delays for multipath QUIC

Christian Huitema <huitema@huitema.net> Sun, 19 September 2021 23:21 UTC

Return-Path: <huitema@huitema.net>
X-Original-To: quic@ietfa.amsl.com
Delivered-To: quic@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id BEE973A1082 for <quic@ietfa.amsl.com>; Sun, 19 Sep 2021 16:21:25 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.889
X-Spam-Level:
X-Spam-Status: No, score=-1.889 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, T_SPF_PERMERROR=0.01, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no
Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id zMLCCE8l57Pg for <quic@ietfa.amsl.com>; Sun, 19 Sep 2021 16:21:20 -0700 (PDT)
Received: from mx43-out1.antispamcloud.com (mx43-out1.antispamcloud.com [138.201.61.189]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 94D3D3A107E for <quic@ietf.org>; Sun, 19 Sep 2021 16:21:19 -0700 (PDT)
Received: from xse342.mail2web.com ([66.113.197.88] helo=xse.mail2web.com) by mx134.antispamcloud.com with esmtp (Exim 4.92) (envelope-from <huitema@huitema.net>) id 1mS67W-0003qi-Hg for quic@ietf.org; Mon, 20 Sep 2021 01:21:16 +0200
Received: from xsmtp21.mail2web.com (unknown [10.100.68.60]) by xse.mail2web.com (Postfix) with ESMTPS id 4HCNwl4903zBMF for <quic@ietf.org>; Sun, 19 Sep 2021 16:21:11 -0700 (PDT)
Received: from [10.5.2.15] (helo=xmail05.myhosting.com) by xsmtp21.mail2web.com with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.92) (envelope-from <huitema@huitema.net>) id 1mS67T-0004gt-Eg for quic@ietf.org; Sun, 19 Sep 2021 16:21:11 -0700
Received: (qmail 1933 invoked from network); 19 Sep 2021 23:21:11 -0000
Received: from unknown (HELO [192.168.1.103]) (Authenticated-user:_huitema@huitema.net@[172.58.43.0]) (envelope-sender <huitema@huitema.net>) by xmail05.myhosting.com (qmail-ldap-1.03) with ESMTPA for <quic@ietf.org>; 19 Sep 2021 23:21:10 -0000
To: IETF QUIC WG <quic@ietf.org>
From: Christian Huitema <huitema@huitema.net>
Subject: One-way delays for multipath QUIC
Message-ID: <0fe75903-8927-c7f8-6dcc-8a37baaa663d@huitema.net>
Date: Sun, 19 Sep 2021 16:21:09 -0700
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.14.0
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"; format="flowed"
Content-Transfer-Encoding: 7bit
Content-Language: en-US
X-Originating-IP: 66.113.197.88
X-Spampanel-Domain: xsmtpout.mail2web.com
X-Spampanel-Username: 66.113.197.0/24
Authentication-Results: antispamcloud.com; auth=pass smtp.auth=66.113.197.0/24@xsmtpout.mail2web.com
X-Spampanel-Outgoing-Class: unsure
X-Spampanel-Outgoing-Evidence: Combined (0.12)
X-Recommended-Action: accept
X-Filter-ID: Pt3MvcO5N4iKaDQ5O6lkdGlMVN6RH8bjRMzItlySaT9rzCTd2dbrCRyi6s766YOJPUtbdvnXkggZ 3YnVId/Y5jcf0yeVQAvfjHznO7+bT5x6h2yQpzTslcOqazQkKtAFKj/EwzSHE5FGYwwjsNRPCKFr 69cS3FqUd6iDafPS52/mD6wdmZPcItWbGe10hXJtXL4FsauCVkDjmcYJdU3yWp7KuHNaaKdg7iBE ZefdsNUFWKwa/wzJUjmazeC7ImcaqlHdH9stIYSUOP2ajLGtTxQ6V51u76v35b1wNe/MvdIN+Yj9 JT+HIE3AciYbXmyy2+J9PgaoF8SQHto3le4zsHTaeQtlKubP6iUTjj6yPARK6buALVaA782LKxg6 vRmng8N1aLhXqdc+jC1RcnVud53D5caUhbVtvqItBqoizkEt9O20UjkwI0v+LOlw05G4BS+iyyNq bT8dUMXMJ4tUCMj6G37ZfAMLceP5aNHPt26RBupu5v1nytoNnc138GfEJRQ2qC7jjynPIHPNqSn4 QTXUjLjYWQt1/5xnQymMoPsgr/U0flMcy2Vi/IcBgY4arPaiJ1W6hAyiRC61jekdwIcXNugoOEbH RyFULpSjm7jZ1h/HfDRQ5Ig8VhPsPE8NDxdyIeJZUl7T+dBx2dACj7eK0K5WfNxQuCfbfx94RKx0 wD89SHsHdpqhumXAb7dNDRojSVizNl0ce/s7u0P9b7Oijoc3SCZfWp1RjkjWCw/vIUzTXkDAiiJi mGhLUFuS2lhaIetXfCg1JdAVrOwKfJBSJbUp4a4GGWy+qYEqZnBUoFIvD3sIcP1fhJPM6B/8eCNO 6aG2P1Vtuv5ypOaKRjkmwQAQTCVvmI3BTbkdKOs37Fo9Xqg2bQC831cpDah1eoHUllQ8+LU8tDPP Yoqd/W0AuXq0T17woJo3avKeADIsy647Mn0zwmGzAi3Zn+YdthRNgs7Ig4l/XErpYn3glZTKFuaT l19W3ISq9+1KiLsESGU+y+fjdgjudZxiTPi+MG1QP35nsYfP84c+RFK3KiZuZ5OAUoGBziSYFLZu u6zX3xxsmqT8l9ARlsTalAaf
X-Report-Abuse-To: spam@quarantine11.antispamcloud.com
Archived-At: <https://mailarchive.ietf.org/arch/msg/quic/qYdaOT1aQk6krfITx4z0K7vl0-I>
X-BeenThere: quic@ietf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Main mailing list of the IETF QUIC working group <quic.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/quic>, <mailto:quic-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/quic/>
List-Post: <mailto:quic@ietf.org>
List-Help: <mailto:quic-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/quic>, <mailto:quic-request@ietf.org?subject=subscribe>
X-List-Received-Date: Sun, 19 Sep 2021 23:21:26 -0000

In the simple multipath option draft, I wrote a short mention of the 
issue with computing round trip times when packets and acknowledgements 
can travel on multiple paths (section 5.3 of 
https://datatracker.ietf.org/doc/draft-huitema-quic-mpath-option/) I 
just wrote a short blog to elaborate on this: 
https://huitema.wordpress.com/2021/09/19/one-way-delays-for-multipath-quic/

-- Christian Huitema