CCNx Semantics
draft-irtf-icnrg-ccnxsemantics-04

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Last updated 2017-07-20 (latest revision 2017-03-13)
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ICNRG                                                           M. Mosko
Internet-Draft                                                PARC, Inc.
Intended status: Experimental                                   I. Solis
Expires: September 14, 2017                                     LinkedIn
                                                                 C. Wood
                                         University of California Irvine
                                                          March 13, 2017

                             CCNx Semantics
                 draft-irtf-icnrg-ccnxsemantics-04

Abstract

   This document describes the core concepts of the CCNx architecture
   and presents a minimum 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.

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 September 14, 2017.

Copyright Notice

   Copyright (c) 2017 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Mosko, et al.          Expires September 14, 2017               [Page 1]
Internet-Draft               CCNx Semantics                   March 2017

   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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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Requirements Language . . . . . . . . . . . . . . . . . .   3
     1.2.  Protocol Overview . . . . . . . . . . . . . . . . . . . .   3
   2.  Protocol  . . . . . . . . . . . . . . . . . . . . . . . . . .   6
     2.1.  Message Grammar . . . . . . . . . . . . . . . . . . . . .   6
     2.2.  Consumer Behavior . . . . . . . . . . . . . . . . . . . .  10
     2.3.  Publisher Behavior  . . . . . . . . . . . . . . . . . . .  11
     2.4.  Forwarder Behavior  . . . . . . . . . . . . . . . . . . .  12
       2.4.1.  Interest HopLimit . . . . . . . . . . . . . . . . . .  12
       2.4.2.  Interest Aggregation  . . . . . . . . . . . . . . . .  13
       2.4.3.  ContentStore Behavior . . . . . . . . . . . . . . . .  14
       2.4.4.  Interest Pipeline . . . . . . . . . . . . . . . . . .  14
       2.4.5.  Content Object Pipeline . . . . . . . . . . . . . . .  15
   3.  Names . . . . . . . . . . . . . . . . . . . . . . . . . . . .  15
     3.1.  Name Examples . . . . . . . . . . . . . . . . . . . . . .  17
     3.2.  Interest Payload ID . . . . . . . . . . . . . . . . . . .  17
   4.  Cache Control . . . . . . . . . . . . . . . . . . . . . . . .  17
   5.  Content Object Hash . . . . . . . . . . . . . . . . . . . . .  18
   6.  Link  . . . . . . . . . . . . . . . . . . . . . . . . . . . .  18
   7.  Hashes  . . . . . . . . . . . . . . . . . . . . . . . . . . .  19
   8.  Validation  . . . . . . . . . . . . . . . . . . . . . . . . .  19
     8.1.  Validation Algorithm  . . . . . . . . . . . . . . . . . .  19
   9.  Interest to Content Object matching . . . . . . . . . . . . .  20
   10. Interest Return . . . . . . . . . . . . . . . . . . . . . . .  21
     10.1.  Message Format . . . . . . . . . . . . . . . . . . . . .  22
     10.2.  ReturnCode Types . . . . . . . . . . . . . . . . . . . .  22
     10.3.  Interest Return Protocol . . . . . . . . . . . . . . . .  23
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