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FLUTE - File Delivery over Unidirectional Transport
RFC 6726

Internet Engineering Task Force (IETF)                          T. Paila
Request for Comments: 6726                                         Nokia
Obsoletes: 3926                                                 R. Walsh
Category: Standards Track                                      Nokia/TUT
ISSN: 2070-1721                                                  M. Luby
                                             Qualcomm Technologies, Inc.
                                                                 V. Roca
                                                                   INRIA
                                                             R. Lehtonen
                                                             TeliaSonera
                                                           November 2012

          FLUTE - File Delivery over Unidirectional Transport

Abstract

   This document defines File Delivery over Unidirectional Transport
   (FLUTE), a protocol for the unidirectional delivery of files over the
   Internet, which is particularly suited to multicast networks.  The
   specification builds on Asynchronous Layered Coding, the base
   protocol designed for massively scalable multicast distribution.
   This document obsoletes RFC 3926.

Status of This Memo

   This is an Internet Standards Track document.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Further information on
   Internet Standards is available in Section 2 of RFC 5741.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   http://www.rfc-editor.org/info/rfc6726.

Paila, et al.                Standards Track                    [Page 1]
RFC 6726                          FLUTE                    November 2012

Copyright Notice

   Copyright (c) 2012 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
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

   This document may contain material from IETF Documents or IETF
   Contributions published or made publicly available before November
   10, 2008.  The person(s) controlling the copyright in some of this
   material may not have granted the IETF Trust the right to allow
   modifications of such material outside the IETF Standards Process.
   Without obtaining an adequate license from the person(s) controlling
   the copyright in such materials, this document may not be modified
   outside the IETF Standards Process, and derivative works of it may
   not be created outside the IETF Standards Process, except to format
   it for publication as an RFC or to translate it into languages other
   than English.

Table of Contents

   1. Introduction ....................................................3
      1.1. Applicability Statement ....................................5
           1.1.1. The Target Application Space ........................5
           1.1.2. The Target Scale ....................................5
           1.1.3. Intended Environments ...............................5
           1.1.4. Weaknesses ..........................................6
   2. Conventions Used in This Document ...............................6
   3. File Delivery ...................................................7
      3.1. File Delivery Session ......................................8
      3.2. File Delivery Table .......................................10
      3.3. Dynamics of FDT Instances within a File Delivery Session ..12
      3.4. Structure of FDT Instance Packets .........................15
           3.4.1. Format of FDT Instance Header ......................16
           3.4.2. Syntax of FDT Instance .............................17
           3.4.3. Content Encoding of FDT Instance ...................21
      3.5. Multiplexing of Files within a File Delivery Session ......22
   4. Channels, Congestion Control, and Timing .......................23
   5. Delivering FEC Object Transmission Information .................24
   6. Describing File Delivery Sessions ..............................26

Paila, et al.                Standards Track                    [Page 2]

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