From nobody Fri Sep 4 10:38:33 2020 Return-Path: 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 4E71E3A0C54 for ; Fri, 4 Sep 2020 10:38:31 -0700 (PDT) X-Virus-Scanned: amavisd-new at amsl.com X-Spam-Flag: NO X-Spam-Score: -2.846 X-Spam-Level: X-Spam-Status: No, score=-2.846 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HTML_MESSAGE=0.001, NICE_REPLY_A=-0.948, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, 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 uAGzSsZmHmdS for ; Fri, 4 Sep 2020 10:38:30 -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 C6AD23A0C50 for ; Fri, 4 Sep 2020 10:38:29 -0700 (PDT) Received: from xse459.mail2web.com ([66.113.197.205] helo=xse.mail2web.com) by mx14.antispamcloud.com with esmtp (Exim 4.92) (envelope-from ) id 1kEFfI-0005f1-JK for quic@ietf.org; Fri, 04 Sep 2020 19:38:26 +0200 Received: from xsmtp21.mail2web.com (unknown [10.100.68.60]) by xse.mail2web.com (Postfix) with ESMTPS id 4BjlDZ0TWlzDMp for ; Fri, 4 Sep 2020 10:34:54 -0700 (PDT) Received: from [10.5.2.16] (helo=xmail06.myhosting.com) by xsmtp21.mail2web.com with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.92) (envelope-from ) id 1kEFbx-000681-UZ for quic@ietf.org; Fri, 04 Sep 2020 10:34:53 -0700 Received: (qmail 28745 invoked from network); 4 Sep 2020 17:34:53 -0000 Received: from unknown (HELO [192.168.1.107]) (Authenticated-user:_huitema@huitema.net@[172.58.38.240]) (envelope-sender ) by xmail06.myhosting.com (qmail-ldap-1.03) with ESMTPA for ; 4 Sep 2020 17:34:53 -0000 Subject: Re: UDP, checksum, ports (was: Re: Should the specifications hard-refer to UDP?) To: sarikaya@ieee.org, Lars Eggert Cc: "quic@ietf.org" References: <1ce1b329-78c0-42c4-aec7-db19b74742eb@www.fastmail.com> <2bac14c6-a543-454f-a0f3-d77258c2428b@www.fastmail.com> <02060b294609539c1be54e89b1510ceb64ce87b2.camel@ericsson.com> From: Christian Huitema Autocrypt: addr=huitema@huitema.net; prefer-encrypt=mutual; keydata= mDMEXtavGxYJKwYBBAHaRw8BAQdA1ou9A5MHTP9N3jfsWzlDZ+jPnQkusmc7sfLmWVz1Rmu0 J0NocmlzdGlhbiBIdWl0ZW1hIDxodWl0ZW1hQGh1aXRlbWEubmV0PoiWBBMWCAA+FiEEw3G4 Nwi4QEpAAXUUELAmqKBYtJQFAl7WrxsCGwMFCQlmAYAFCwkIBwIGFQoJCAsCBBYCAwECHgEC F4AACgkQELAmqKBYtJQbMwD/ebj/qnSbthC/5kD5DxZ/Ip0CGJw5QBz/+fJp3R8iAlsBAMjK r2tmyWyJz0CUkVG24WaR5EAJDvgwDv8h22U6QVkAuDgEXtavGxIKKwYBBAGXVQEFAQEHQJoM 6MUAIqpoqdCIiACiEynZf7nlJg2Eu0pXIhbUGONdAwEIB4h+BBgWCAAmFiEEw3G4Nwi4QEpA AXUUELAmqKBYtJQFAl7WrxsCGwwFCQlmAYAACgkQELAmqKBYtJRm2wD7BzeK5gEXSmBcBf0j BYdSaJcXNzx4yPLbP4GnUMAyl2cBAJzcsR4RkwO4dCRqM9CHpVJCwHtbUDJaa55//E0kp+gH Message-ID: Date: Fri, 4 Sep 2020 10:34:53 -0700 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.12.0 MIME-Version: 1.0 In-Reply-To: Content-Type: multipart/alternative; boundary="------------2D46EDDB5E24F0FC8002ECFE" Content-Language: en-US X-Originating-IP: 66.113.197.205 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: ham X-Spampanel-Outgoing-Evidence: Combined (0.08) X-Recommended-Action: accept X-Filter-ID: Mvzo4OR0dZXEDF/gcnlw0VKALJWqpbz84ezJUOplsTqpSDasLI4SayDByyq9LIhVbJBh0A1d+9W2 UFX3UaX8T0TNWdUk1Ol2OGx3IfrIJKywOmJyM1qr8uRnWBrbSAGDcnqpk5VeF3xR4kF6iVwRtbgN zB/4Jkrw1eDLcif59fvmkNUFzqgK71j290HiPyeFU7Tmz6iKnkQL9gqsxD347235Nhqq+/HvroPq 8GSPg+5hmwN8D4LrepG7AX8WNwY81aOsarGPChhedL2Py5oHk46jSvfpO+1kZkomjtjB6X7/nuj3 koRhn2BlE7dXoT0pGVmhMAaQ/AfCRwRe7yHm5oY+NYmsSGn+svMubxnbgm1cr18FZBEPC2/c16Xd 7sC9aC4xteE1WLqGS9YoqrsZ2DyteN0e+ECCv9/f+GPymkgDVo7QBKA4MctKq4ifYPcXFRL2K3LA EfDXVOdt7wDbusYnuEVWSxKMHbU0zkNM3EElFDaoLuOPKc8gc82pKfhB7T02ZXdoQxMs//iOE4Fl hiCv9TR+UxzLZWL8hwGBjhoI3W+YcuHfP5PkZb5A+wE5qGdpH54Oa3V8I76VOEvlwLCanpZsarZa LIRpEqA8mZEwWcPoaRBqQ28Cyw5TTd3T7ZcA6yPx7zZCWNjJ/TI6yZf0AxY+BTyUpv5ZZ7Pszxf2 ie80q3LAG2MiIaIREzT1xNjuO97khcUFBr/guEWv1bdCp3Zd9clP8wSiJZWbJCj+xRrjVmRxpGtS cvUmgj1LCHKe1PH/6K0TmoP6lY3JlF2jZAOanSBpz6Rja2u/0jI5Drb/uCdxrn0R1dKOr9zm50cb k66JCEX8hyQ7ijXfifysta6u1iHEyuS7GD1uvcojqec+j6EReqEF8xOyo0wFJOYIJd4MvQ0Nf4Ec bvHO1diDanHV9KirFAIIecsyj+YNTo81GR+jDXFsz/ZQnbbTizvwlZsrbltGiZoUh+c+5pFVgpT1 b21uZVckGp0ccOa2XhkGbmsUNPNkere1WheNsVXmhO8BzADiszcWR9bz/SDtF09JpSbuuCeiIDK0 C/0= X-Report-Abuse-To: spam@quarantine11.antispamcloud.com 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: Fri, 04 Sep 2020 17:38:31 -0000 This is a multi-part message in MIME format. --------------2D46EDDB5E24F0FC8002ECFE Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit On 9/4/2020 9:07 AM, Behcet Sarikaya wrote: > > > On Fri, Sep 4, 2020 at 10:56 AM Lars Eggert > wrote: > > Hi, > > On 2020-9-4, at 18:36, Behcet Sarikaya > wrote: > > QUIC draft mentions UDP in many places, it says QUIC is > UDP-based but in the draft RFC 768 is not listed as a reference > informative/normative. > > I opened https://github.com/quicwg/base-drafts/pull/4073 to fix > that - thank you for noticing. > > > Second, probably more importantly, UDP header has the fields > source/destination port and checksum. These are not mentioned in > the draft. > > I wonder why? > > What would you expect the drafts to say about checksums and ports? > > > Yes, I realize that the draft mentions ports.  > What I think should be mentioned is if these header fields are > required then what are the requirements on implementations, or just > refer to RFC 768? Let's just refer to RFC 768. In particular, let's not have a protracted discussion about UDP versus UDP-lite... -- Christian Huitema --------------2D46EDDB5E24F0FC8002ECFE Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 8bit


On 9/4/2020 9:07 AM, Behcet Sarikaya wrote:


On Fri, Sep 4, 2020 at 10:56 AM Lars Eggert <lars@eggert.org> wrote:
Hi,

On 2020-9-4, at 18:36, Behcet Sarikaya <sarikaya2012@gmail.com> wrote:
> QUIC draft mentions UDP in many places, it says QUIC is UDP-based but in the draft RFC 768 is not listed as a reference informative/normative.

I opened https://github.com/quicwg/base-drafts/pull/4073 to fix that - thank you for noticing.

> Second, probably more importantly, UDP header has the fields source/destination port and checksum. These are not mentioned in the draft.
> I wonder why?

What would you expect the drafts to say about checksums and ports?


Yes, I realize that the draft mentions ports. 
What I think should be mentioned is if these header fields are required then what are the requirements on implementations, or just refer to RFC 768?


Let's just refer to RFC 768. In particular, let's not have a protracted discussion about UDP versus UDP-lite...

-- Christian Huitema

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