Additional Policies for the Partially Reliable Stream Control Transmission Protocol Extension
RFC 7496
Document | Type | RFC - Proposed Standard (April 2015; No errata) | |
---|---|---|---|
Authors | Michael Tüxen , Robin Seggelmann , Randall Stewart , Salvatore Loreto | ||
Last updated | 2015-10-14 | ||
Replaces | draft-tuexen-tsvwg-sctp-prpolicies | ||
Stream | Internent Engineering Task Force (IETF) | ||
Formats | plain text html pdf htmlized (tools) 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 | RFC 7496 (Proposed Standard) | |
Action Holders |
(None)
|
||
Consensus Boilerplate | Yes | ||
Telechat date | |||
Responsible AD | Spencer Dawkins | ||
Send notices to | (None) | ||
IANA | IANA review state | Version Changed - Review Needed | |
IANA action state | No IANA Actions |
Internet Engineering Task Force (IETF) M. Tuexen Request for Comments: 7496 Muenster Univ. of Appl. Sciences Category: Standards Track R. Seggelmann ISSN: 2070-1721 Metafinanz Informationssysteme GmbH R. Stewart Netflix, Inc. S. Loreto Ericsson April 2015 Additional Policies for the Partially Reliable Stream Control Transmission Protocol Extension Abstract This document defines two additional policies for the Partially Reliable Stream Control Transmission Protocol (PR-SCTP) extension. These policies allow limitation of the number of retransmissions and prioritization of user messages for more efficient usage of the send buffer. 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/rfc7496. Tuexen, et al. Standards Track [Page 1] RFC 7496 Additional PR-SCTP Policies April 2015 Copyright Notice Copyright (c) 2015 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. Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3 2. Conventions . . . . . . . . . . . . . . . . . . . . . . . . . 3 3. Additional PR-SCTP Policies . . . . . . . . . . . . . . . . . 3 3.1. Limited Retransmissions Policy . . . . . . . . . . . . . 3 3.2. Priority Policy . . . . . . . . . . . . . . . . . . . . . 4 4. Socket API Considerations . . . . . . . . . . . . . . . . . . 4 4.1. Data Types . . . . . . . . . . . . . . . . . . . . . . . 5 4.2. Support for Added PR-SCTP Policies . . . . . . . . . . . 5 4.3. Socket Option for Getting the Stream-Specific PR-SCTP Status (SCTP_PR_STREAM_STATUS) . . . . . . . . . . . . . 6 4.4. Socket Option for Getting the Association-Specific PR-SCTP Status (SCTP_PR_ASSOC_STATUS) . . . . . . . . . . 7 4.5. Socket Option for Getting and Setting the PR-SCTP Support (SCTP_PR_SUPPORTED) . . . . . . . . . . . . . . . . . . . 8 5. Security Considerations . . . . . . . . . . . . . . . . . . . 9 6. References . . . . . . . . . . . . . . . . . . . . . . . . . 9 6.1. Normative References . . . . . . . . . . . . . . . . . . 9 6.2. Informative References . . . . . . . . . . . . . . . . . 9 Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . 10 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 11 Tuexen, et al. Standards Track [Page 2] RFC 7496 Additional PR-SCTP Policies April 2015 1. Introduction The Partially Reliable SCTP (PR-SCTP) extension 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] refers to them as "PR-SCTP Services"). [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 limitation of the number of retransmissions. Priority Policy: Allows removal of lower-priority messages if space for higher-priority messages is needed in the send buffer.Show full document text