Flexible Session Protocol
draft-gao-flexible-session-protocol-02

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INTERNET-DRAFT                                                    J. Gao
Intended Status: Experimental                                           
Expires: October 18, 2019                                 April 16, 2019

                       Flexible Session Protocol 
                 draft-gao-flexible-session-protocol-02

Abstract

   FSP is a connection-oriented transport layer protocol that provides
   mobility and multihoming support by introducing the concept of 'upper
   layer thread ID', which is associated with some shared secret that is
   applied to protect authenticity of the origin of the FSP packets.

   It introduces the concept of transmit transaction to facilitate a
   quad-party sub-protocol for shared secret installation.

   It provides transport layer features of zero round-trip connection
   multiplication and on-the-wire compression, in addition to ubiquitous
   message authentication with optional encryption service. 

Status of this Memo

   This Internet-Draft is submitted to IETF in full conformance with the
   provisions of BCP 78 and BCP 79.

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Copyright and License Notice

   Copyright (c) 2019 IETF Trust and the persons identified as the
 

Gao                     Expires October 18, 2019                [Page 1]
INTERNET DRAFT         Flexible Session Protocol          April 16, 2019

   document authors. All rights reserved.

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Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  5
     1.1. High Mobility . . . . . . . . . . . . . . . . . . . . . . .  5
     1.2. Requirements Language . . . . . . . . . . . . . . . . . . .  6
     1.3. Conventions . . . . . . . . . . . . . . . . . . . . . . . .  6
   2.  Abbreviations and Idioms . . . . . . . . . . . . . . . . . . .  7
   3.  Key Mechanisms . . . . . . . . . . . . . . . . . . . . . . . .  9
     3.1. Underlying Layer Services Required  . . . . . . . . . . . .  9
       3.1.1. Packet Delivery . . . . . . . . . . . . . . . . . . . .  9
       3.1.2. Network Address Change Notification . . . . . . . . . .  9
       3.1.3. Network Congestion Control  . . . . . . . . . . . . . . 10
     3.2. Identifying Connection by Local ULTID . . . . . . . . . . . 10
     3.3. Defending Against Connection Redirection with ICC . . . . . 10
     3.4. Transmit Transaction  . . . . . . . . . . . . . . . . . . . 10
     3.5. Quad-party Session Key Installation Sub-protocol  . . . . . 11
     3.6. Zero Round-Trip Connection Multiplication . . . . . . . . . 12
   4.  Packet Structure . . . . . . . . . . . . . . . . . . . . . . . 13
     4.1. FSP over UDP/IPv4 . . . . . . . . . . . . . . . . . . . . . 13
     4.2. FSP over IPv6 . . . . . . . . . . . . . . . . . . . . . . . 13
     4.3. Generic FSP Header  . . . . . . . . . . . . . . . . . . . . 15
     4.4. FSP Header Signature  . . . . . . . . . . . . . . . . . . . 15
       4.4.1 Header Stack Pointer . . . . . . . . . . . . . . . . . . 15
       4.4.2 Major  . . . . . . . . . . . . . . . . . . . . . . . . . 15
       4.4.3 Operation Code . . . . . . . . . . . . . . . . . . . . . 16
     4.5. Preliminary FSP Packets . . . . . . . . . . . . . . . . . . 18
       4.5.1. Connect Initialization  . . . . . . . . . . . . . . . . 18
       4.5.2. Acknowledgment to Connect Initialization  . . . . . . . 19
       4.5.3. Connect Request . . . . . . . . . . . . . . . . . . . . 20
     4.6. Normal Fixed Header . . . . . . . . . . . . . . . . . . . . 21
     4.7. Sink Parameter  . . . . . . . . . . . . . . . . . . . . . . 23
     4.8. Selective Negative Acknowledgment . . . . . . . . . . . . . 25
     4.9. RESET . . . . . . . . . . . . . . . . . . . . . . . . . . . 25