Additional Policies for the Partial Reliability Extension of the Stream Control Transmission Protocol
draft-ietf-tsvwg-sctp-prpolicies-04

The information below is for an old version of the document
Document Type Active Internet-Draft (tsvwg WG)
Last updated 2014-11-09 (latest revision 2014-09-28)
Replaces draft-tuexen-tsvwg-sctp-prpolicies
Stream IETF
Intended RFC status Proposed Standard
Formats pdf htmlized bibtex
Reviews
Stream WG state Submitted to IESG for Publication
Document shepherd Gorry Fairhurst
Shepherd write-up Show (last changed 2014-10-27)
IESG IESG state AD Evaluation::Revised I-D Needed
Consensus Boilerplate Unknown
Telechat date
Responsible AD Spencer Dawkins
Send notices to gorry@erg.abdn.ac.uk, tsvwg-chairs@tools.ietf.org, draft-ietf-tsvwg-sctp-prpolicies.all@tools.ietf.org, tsvwg@ietf.org
Network Working Group                                          M. Tuexen
Internet-Draft                          Muenster Univ. of Appl. Sciences
Intended status: Standards Track                           R. Seggelmann
Expires: April 1, 2015                      T-Systems International GmbH
                                                              R. Stewart
                                                           Netflix, Inc.
                                                               S. Loreto
                                                                Ericsson
                                                      September 28, 2014

Additional Policies for the Partial Reliability Extension of the Stream
                     Control Transmission Protocol
                draft-ietf-tsvwg-sctp-prpolicies-04.txt

Abstract

   This document defines two additional policies for the Partial
   Reliability Extension of the Stream Control Transmission Protocol
   (PR-SCTP) allowing to limit the number of retransmissions or to
   prioritize user messages for more efficient send buffer usage.

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
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at http://datatracker.ietf.org/drafts/current/.

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

   This Internet-Draft will expire on April 1, 2015.

Copyright Notice

   Copyright (c) 2014 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

Tuexen, et al.            Expires April 1, 2015                 [Page 1]
Internet-Draft         Additional PR-SCTP Policies        September 2014

   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.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Conventions . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Additional PR-SCTP Policies . . . . . . . . . . . . . . . . .   3
     3.1.  Limited Retransmissions Policy  . . . . . . . . . . . . .   3
     3.2.  Priority Policy . . . . . . . . . . . . . . . . . . . . .   3
   4.  Socket API Considerations . . . . . . . . . . . . . . . . . .   4
     4.1.  Data Types  . . . . . . . . . . . . . . . . . . . . . . .   4
     4.2.  Support for Added PR-SCTP Policies  . . . . . . . . . . .   4
     4.3.  Socket Option for Getting the Stream Specific PR-SCTP
           Status                 (SCTP_PR_STREAM_STATUS)  . . . . .   5
     4.4.  Socket Option for Getting the Association Specific PR-
           SCTP Status                 (SCTP_PR_ASSOC_STATUS)  . . .   6
     4.5.  Socket Option for Getting and Setting the PR-SCTP Support
           (SCTP_PR_SUPPORTED) . . . . . . . . . . . . . . . . . . .   7
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   8
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .   8
   7.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .   8
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   8
     8.1.  Normative References  . . . . . . . . . . . . . . . . . .   8
     8.2.  Informative References  . . . . . . . . . . . . . . . . .   8
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   9

1.  Introduction

   The SCTP Partial Reliability Extension (PR-SCTP) defined in [RFC3758]
   provides a generic method for senders to abandon user messages.  The
   decision to abandon a user message is sender side only and the exact
   condition is called a PR-SCTP policy.  [RFC3758] also defines one
   particular PR-SCTP policy, called Timed Reliability.  This allows the
   sender to specify a timeout for a user message after which the SCTP
   stack abandons the user message.

   This document specifies the following two additional PR-SCTP
   policies:

   Limited Retransmission Policy:  Allows to limit the number of
      retransmissions.

   Priority Policy:  Allows to discard lower priority messages if space
      for higher priority messages is needed in the send buffer.
Show full document text