QUIC-LB: Generating Routable QUIC Connection IDs
draft-duke-quic-load-balancers-06

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QUIC                                                             M. Duke
Internet-Draft                                         F5 Networks, Inc.
Intended status: Standards Track                                N. Banks
Expires: May 7, 2020                                           Microsoft
                                                        November 4, 2019

            QUIC-LB: Generating Routable QUIC Connection IDs
                   draft-duke-quic-load-balancers-06

Abstract

   QUIC connection IDs allow continuation of connections across address/
   port 4-tuple changes, and can store routing information for stateless
   or low-state load balancers.  They also can prevent linkability of
   connections across deliberate address migration through the use of
   protected communications between client and server.  This creates
   issues for load-balancing intermediaries.  This specification
   standardizes methods for encoding routing information and proposes an
   optional protocol called QUIC-LB to exchange the parameters of that
   encoding.  This framework also enables offload of other QUIC
   functions to trusted intermediaries, given the explicit cooperation
   of the QUIC server.

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   Copyright (c) 2019 IETF Trust and the persons identified as the
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   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents

Duke & Banks               Expires May 7, 2020                  [Page 1]
Internet-Draft                   QUIC-LB                   November 2019

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   4
   2.  Protocol Objectives . . . . . . . . . . . . . . . . . . . . .   5
     2.1.  Simplicity  . . . . . . . . . . . . . . . . . . . . . . .   5
     2.2.  Security  . . . . . . . . . . . . . . . . . . . . . . . .   5
     2.3.  Robustness to Middleboxes . . . . . . . . . . . . . . . .   6
     2.4.  Load Balancer Chains  . . . . . . . . . . . . . . . . . .   6
   3.  First CID octet . . . . . . . . . . . . . . . . . . . . . . .   6
     3.1.  Config Rotation . . . . . . . . . . . . . . . . . . . . .   6
     3.2.  Configuration Failover  . . . . . . . . . . . . . . . . .   7
     3.3.  Length Self-Description . . . . . . . . . . . . . . . . .   7
   4.  Routing Algorithms  . . . . . . . . . . . . . . . . . . . . .   8
     4.1.  Plaintext CID Algorithm . . . . . . . . . . . . . . . . .   9
       4.1.1.  Load Balancer Actions . . . . . . . . . . . . . . . .   9
       4.1.2.  Server Actions  . . . . . . . . . . . . . . . . . . .   9
     4.2.  Obfuscated CID Algorithm  . . . . . . . . . . . . . . . .  10
       4.2.1.  Load Balancer Actions . . . . . . . . . . . . . . . .  10
       4.2.2.  Server Actions  . . . . . . . . . . . . . . . . . . .  11
     4.3.  Stream Cipher CID Algorithm . . . . . . . . . . . . . . .  11
       4.3.1.  Load Balancer Actions . . . . . . . . . . . . . . . .  12
       4.3.2.  Server Actions  . . . . . . . . . . . . . . . . . . .  12
     4.4.  Block Cipher CID Algorithm  . . . . . . . . . . . . . . .  13
       4.4.1.  Load Balancer Actions . . . . . . . . . . . . . . . .  13
       4.4.2.  Server Actions  . . . . . . . . . . . . . . . . . . .  14
   5.  Retry Service . . . . . . . . . . . . . . . . . . . . . . . .  14
     5.1.  Common Requirements . . . . . . . . . . . . . . . . . . .  15
     5.2.  No-Shared-State Retry Service . . . . . . . . . . . . . .  15
       5.2.1.  Service Requirements  . . . . . . . . . . . . . . . .  15
       5.2.2.  Server Requirements . . . . . . . . . . . . . . . . .  17
     5.3.  Shared-State Retry Service  . . . . . . . . . . . . . . .  17
       5.3.1.  Service Requirements  . . . . . . . . . . . . . . . .  19
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