CCNx Semantics
draft-irtf-icnrg-ccnxsemantics-09

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Last updated 2018-12-06 (latest revision 2018-06-27)
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ICNRG                                                           M. Mosko
Internet-Draft                                                PARC, Inc.
Intended status: Experimental                                   I. Solis
Expires: December 28, 2018                                      LinkedIn
                                                                 C. Wood
                                         University of California Irvine
                                                           June 26, 2018

                             CCNx Semantics
                 draft-irtf-icnrg-ccnxsemantics-09

Abstract

   This document describes the core concepts of the Content Centric
   Networking (CCNx) architecture and presents a network protocol based
   on two messages: Interests and Content Objects.  It specifies the set
   of mandatory and optional fields within those messages and describes
   their behavior and interpretation.  This architecture and protocol
   specification is independent of a specific wire encoding.

   The protocol also uses a Control message called an InterestReturn,
   whereby one system can return an Interest message to the previous hop
   due to an error condition.  This indicates to the previous hop that
   the current system will not respond to the Interest.

   This document is a product of the Information Centric Networking
   research group (ICNRG).

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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   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
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   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on December 28, 2018.

Mosko, et al.           Expires December 28, 2018               [Page 1]
Internet-Draft               CCNx Semantics                    June 2018

Copyright Notice

   Copyright (c) 2018 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
   (http://trustee.ietf.org/license-info) in effect on the date of
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   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Requirements Language . . . . . . . . . . . . . . . . . .   4
     1.2.  Architecture  . . . . . . . . . . . . . . . . . . . . . .   4
     1.3.  Protocol Overview . . . . . . . . . . . . . . . . . . . .   5
   2.  Protocol  . . . . . . . . . . . . . . . . . . . . . . . . . .   9
     2.1.  Message Grammar . . . . . . . . . . . . . . . . . . . . .   9
     2.2.  Consumer Behavior . . . . . . . . . . . . . . . . . . . .  12
     2.3.  Publisher Behavior  . . . . . . . . . . . . . . . . . . .  14
     2.4.  Forwarder Behavior  . . . . . . . . . . . . . . . . . . .  14
       2.4.1.  Interest HopLimit . . . . . . . . . . . . . . . . . .  15
       2.4.2.  Interest Aggregation  . . . . . . . . . . . . . . . .  16
       2.4.3.  Content Store Behavior  . . . . . . . . . . . . . . .  17
       2.4.4.  Interest Pipeline . . . . . . . . . . . . . . . . . .  18
       2.4.5.  Content Object Pipeline . . . . . . . . . . . . . . .  18
   3.  Names . . . . . . . . . . . . . . . . . . . . . . . . . . . .  19
     3.1.  Name Examples . . . . . . . . . . . . . . . . . . . . . .  20
     3.2.  Interest Payload ID . . . . . . . . . . . . . . . . . . .  21
   4.  Cache Control . . . . . . . . . . . . . . . . . . . . . . . .  21
   5.  Content Object Hash . . . . . . . . . . . . . . . . . . . . .  22
   6.  Link  . . . . . . . . . . . . . . . . . . . . . . . . . . . .  22
   7.  Hashes  . . . . . . . . . . . . . . . . . . . . . . . . . . .  22
   8.  Validation  . . . . . . . . . . . . . . . . . . . . . . . . .  23
     8.1.  Validation Algorithm  . . . . . . . . . . . . . . . . . .  23
   9.  Interest to Content Object matching . . . . . . . . . . . . .  24
   10. Interest Return . . . . . . . . . . . . . . . . . . . . . . .  25
     10.1.  Message Format . . . . . . . . . . . . . . . . . . . . .  25
     10.2.  ReturnCode Types . . . . . . . . . . . . . . . . . . . .  26
     10.3.  Interest Return Protocol . . . . . . . . . . . . . . . .  26
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