Multipath Extensions for QUIC (MP-QUIC)
draft-deconinck-quic-multipath-03
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QUIC Working Group Q. De Coninck
Internet-Draft O. Bonaventure
Intended status: Standards Track UCLouvain
Expires: March 1, 2020 August 29, 2019
Multipath Extensions for QUIC (MP-QUIC)
draft-deconinck-quic-multipath-03
Abstract
This document specifies extensions to the QUIC protocol to enable,
other than connection migration, simultaneous usage of multiple paths
for a single connection. Those extensions remain compliant with the
current single-path QUIC design. They allow devices to benefit from
multiple network paths while preserving the privacy features of QUIC.
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
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material or to cite them other than as "work in progress."
This Internet-Draft will expire on March 1, 2020.
Copyright Notice
Copyright (c) 2019 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
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the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
De Coninck & Bonaventure Expires March 1, 2020 [Page 1]
Internet-Draft MP-QUIC August 2019
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Conventions and Definitions . . . . . . . . . . . . . . . . . 4
2.1. Notational Conventions . . . . . . . . . . . . . . . . . 4
3. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3.1. What is a Path? . . . . . . . . . . . . . . . . . . . . . 5
3.2. Beyond Connection Migration . . . . . . . . . . . . . . . 5
3.3. Establishment of a Multipath QUIC Connection . . . . . . 7
3.4. Architecture of Multipath QUIC . . . . . . . . . . . . . 7
3.5. Path Establishment . . . . . . . . . . . . . . . . . . . 8
3.6. Exchanging Data over Multiple Paths . . . . . . . . . . . 9
3.7. Exchanging Addresses . . . . . . . . . . . . . . . . . . 10
3.8. Coping with Address Removals . . . . . . . . . . . . . . 11
3.9. Path Migration . . . . . . . . . . . . . . . . . . . . . 12
3.10. Sharing Path Policies . . . . . . . . . . . . . . . . . . 13
3.11. Congestion Control . . . . . . . . . . . . . . . . . . . 13
4. Mapping Path ID to Connection IDs . . . . . . . . . . . . . . 13
5. Using Multiple Paths . . . . . . . . . . . . . . . . . . . . 14
5.1. Multipath Negotiation . . . . . . . . . . . . . . . . . . 14
5.1.1. Transport Parameter Definition . . . . . . . . . . . 14
5.2. Coping with Additional Remote Addresses . . . . . . . . . 15
5.3. Receive Path State . . . . . . . . . . . . . . . . . . . 15
5.4. Sending Path State . . . . . . . . . . . . . . . . . . . 17
5.5. Dynamic Management of Paths . . . . . . . . . . . . . . . 19
5.6. Losing Addresses . . . . . . . . . . . . . . . . . . . . 19
5.7. Scheduling Strategies . . . . . . . . . . . . . . . . . . 19
6. Modifications to QUIC frames . . . . . . . . . . . . . . . . 20
6.1. NEW_CONNECTION_ID Frame . . . . . . . . . . . . . . . . . 20
6.2. RETIRE_CONNECTION_ID Frame . . . . . . . . . . . . . . . 22
6.3. ACK Frame . . . . . . . . . . . . . . . . . . . . . . . . 22
7. New Frames . . . . . . . . . . . . . . . . . . . . . . . . . 23
7.1. PATH_UPDATE Frame . . . . . . . . . . . . . . . . . . . . 23
7.2. ADD_ADDRESS Frame . . . . . . . . . . . . . . . . . . . . 24
7.3. REMOVE_ADDRESS Frame . . . . . . . . . . . . . . . . . . 25
7.4. PATHS Frame . . . . . . . . . . . . . . . . . . . . . . . 25
8. Security Considerations . . . . . . . . . . . . . . . . . . . 27
8.1. Nonce Computation . . . . . . . . . . . . . . . . . . . . 27
8.2. Validation of Exchanged Addresses . . . . . . . . . . . . 28
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