Multipath Extensions for QUIC (MP-QUIC)
draft-deconinck-quic-multipath-05
QUIC Working Group Q. De Coninck
Internet-Draft O. Bonaventure
Intended status: Standards Track UCLouvain
Expires: 21 February 2021 20 August 2020
Multipath Extensions for QUIC (MP-QUIC)
draft-deconinck-quic-multipath-05
Abstract
This document specifies extensions to the QUIC protocol to enable the
simultaneous usage of multiple paths for a single connection.
These extensions are compliant with the single-path QUIC design and
preserve QUIC privacy features.
Status of This Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet-
Drafts is at https://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress."
This Internet-Draft will expire on 21 February 2021.
Copyright Notice
Copyright (c) 2020 IETF Trust and the persons identified as the
document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents (https://trustee.ietf.org/
license-info) in effect on the date of publication of this document.
Please review these documents carefully, as they describe your rights
and restrictions with respect to this document. Code Components
extracted from this document must include Simplified BSD License text
as described in Section 4.e of the Trust Legal Provisions and are
provided without warranty as described in the Simplified BSD License.
De Coninck & BonaventureExpires 21 February 2021 [Page 1]
Internet-Draft MP-QUIC August 2020
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Conventions and Definitions . . . . . . . . . . . . . . . . . 4
2.1. Notation Conventions . . . . . . . . . . . . . . . . . . 5
3. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.1. Moving from Bidirectional Paths to Uniflows . . . . . . . 5
3.2. Beyond Connection Migration . . . . . . . . . . . . . . . 7
3.3. Establishment of a Multipath QUIC Connection . . . . . . 8
3.4. Architecture of Multipath QUIC . . . . . . . . . . . . . 8
3.5. Uniflow Establishment . . . . . . . . . . . . . . . . . . 11
3.6. Exchanging Data over Multiple Uniflows . . . . . . . . . 12
3.7. Exchanging Addresses . . . . . . . . . . . . . . . . . . 14
3.8. Coping with Address Removals . . . . . . . . . . . . . . 15
3.9. Uniflow Migration . . . . . . . . . . . . . . . . . . . . 15
3.10. Congestion Control . . . . . . . . . . . . . . . . . . . 15
4. Mapping Uniflow IDs to Connection IDs . . . . . . . . . . . . 15
5. Using Multiple Uniflows . . . . . . . . . . . . . . . . . . . 16
5.1. Multipath Negotiation . . . . . . . . . . . . . . . . . . 16
5.1.1. Transport Parameter Definition . . . . . . . . . . . 17
5.2. Coping with Additional Remote Addresses . . . . . . . . . 17
5.3. Receiving Uniflow State . . . . . . . . . . . . . . . . . 17
5.4. Sending Uniflow State . . . . . . . . . . . . . . . . . . 18
5.5. Losing Addresses . . . . . . . . . . . . . . . . . . . . 20
6. New Frames . . . . . . . . . . . . . . . . . . . . . . . . . 20
6.1. MP_NEW_CONNECTION_ID Frame . . . . . . . . . . . . . . . 20
6.2. MP_RETIRE_CONNECTION_ID Frame . . . . . . . . . . . . . . 21
6.3. MP_ACK Frame . . . . . . . . . . . . . . . . . . . . . . 22
6.4. ADD_ADDRESS Frame . . . . . . . . . . . . . . . . . . . . 23
6.5. REMOVE_ADDRESS Frame . . . . . . . . . . . . . . . . . . 24
6.6. UNIFLOWS Frame . . . . . . . . . . . . . . . . . . . . . 25
7. Extension of the Meaning of Existing QUIC Frames . . . . . . 26
8. Security Considerations . . . . . . . . . . . . . . . . . . . 27
8.1. Nonce Computation . . . . . . . . . . . . . . . . . . . . 27
8.2. Validation of Exchanged Addresses . . . . . . . . . . . . 27
9. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 27
9.1. QUIC Transport Parameter Registry . . . . . . . . . . . . 27
10. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 28
11. References . . . . . . . . . . . . . . . . . . . . . . . . . 28
11.1. Normative References . . . . . . . . . . . . . . . . . . 28
Show full document text