draft-ietf-quic-version-negotiation-01.txt   draft-ietf-quic-version-negotiation-02.txt 
QUIC Working Group D. Schinazi QUIC Working Group D. Schinazi
Internet-Draft Google LLC Internet-Draft Google LLC
Intended status: Informational E. Rescorla Intended status: Informational E. Rescorla
Expires: 4 March 2021 Mozilla Expires: 6 May 2021 Mozilla
31 August 2020 2 November 2020
Compatible Version Negotiation for QUIC Compatible Version Negotiation for QUIC
draft-ietf-quic-version-negotiation-01 draft-ietf-quic-version-negotiation-02
Abstract Abstract
QUIC does not provide a complete version negotiation mechanism but QUIC does not provide a complete version negotiation mechanism but
instead only provides a way for the server to indicate that the instead only provides a way for the server to indicate that the
version the client offered is unacceptable. This document describes version the client offered is unacceptable. This document describes
a version negotiation mechanism that allows a client and server to a version negotiation mechanism that allows a client and server to
select a mutually supported version. Optionally, if the original and select a mutually supported version. Optionally, if the original and
negotiated version share a compatible Initial format, the negotiation negotiated version share a compatible Initial format, the negotiation
can take place without incurring an extra round trip. can take place without incurring an extra round trip.
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Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet- working documents as Internet-Drafts. The list of current Internet-
Drafts is at https://datatracker.ietf.org/drafts/current/. Drafts is at https://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress." material or to cite them other than as "work in progress."
This Internet-Draft will expire on 4 March 2021. This Internet-Draft will expire on 6 May 2021.
Copyright Notice Copyright Notice
Copyright (c) 2020 IETF Trust and the persons identified as the Copyright (c) 2020 IETF Trust and the persons identified as the
document authors. All rights reserved. document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents (https://trustee.ietf.org/ Provisions Relating to IETF Documents (https://trustee.ietf.org/
license-info) in effect on the date of publication of this document. license-info) in effect on the date of publication of this document.
Please review these documents carefully, as they describe your rights Please review these documents carefully, as they describe your rights
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If this document is approved, IANA shall assign the identifier 0x73DB If this document is approved, IANA shall assign the identifier 0x73DB
for the "version_negotiation" transport parameter from the QUIC for the "version_negotiation" transport parameter from the QUIC
Transport Parameter Registry and the identifier 0x53F8 for Transport Parameter Registry and the identifier 0x53F8 for
"VERSION_NEGOTIATION_ERROR" from the QUIC Transport Error Codes "VERSION_NEGOTIATION_ERROR" from the QUIC Transport Error Codes
registry. registry.
10. Normative References 10. Normative References
[QUIC] Iyengar, J. and M. Thomson, "QUIC: A UDP-Based Multiplexed [QUIC] Iyengar, J. and M. Thomson, "QUIC: A UDP-Based Multiplexed
and Secure Transport", Work in Progress, Internet-Draft, and Secure Transport", Work in Progress, Internet-Draft,
draft-ietf-quic-transport-29, 9 June 2020, draft-ietf-quic-transport-32, 20 October 2020,
<http://www.ietf.org/internet-drafts/draft-ietf-quic- <http://www.ietf.org/internet-drafts/draft-ietf-quic-
transport-29.txt>. transport-32.txt>.
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119, Requirement Levels", BCP 14, RFC 2119,
DOI 10.17487/RFC2119, March 1997, DOI 10.17487/RFC2119, March 1997,
<https://www.rfc-editor.org/info/rfc2119>. <https://www.rfc-editor.org/info/rfc2119>.
[RFC8174] Leiba, B., "Ambiguity of Uppercase vs Lowercase in RFC [RFC8174] Leiba, B., "Ambiguity of Uppercase vs Lowercase in RFC
2119 Key Words", BCP 14, RFC 8174, DOI 10.17487/RFC8174, 2119 Key Words", BCP 14, RFC 8174, DOI 10.17487/RFC8174,
May 2017, <https://www.rfc-editor.org/info/rfc8174>. May 2017, <https://www.rfc-editor.org/info/rfc8174>.
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