Transport Options for UDP
draft-touch-tsvwg-udp-options-09
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TSVWG J. Touch
Internet Draft USC/ISI
Intended status: Standards Track May 16, 2017
Intended updates: 768
Expires: November 2017
Transport Options for UDP
draft-touch-tsvwg-udp-options-09.txt
Status of this Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79. This document may not be modified,
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This Internet-Draft will expire on November 16, 2017.
Copyright Notice
Copyright (c) 2017 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
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Touch Expires November 16, 2017 [Page 1]
Internet-Draft Transport Options for UDP May 2017
Abstract
Transport protocols are extended through the use of transport header
options. This document experimentally extends UDP by indicating the
location, syntax, and semantics for UDP transport layer options.
Table of Contents
1. Introduction...................................................2
2. Conventions used in this document..............................3
3. Background.....................................................3
4. The UDP Option Area............................................4
5. UDP Options....................................................7
5.1. End of Options List (EOL).................................8
5.2. No Operation (NOP)........................................8
5.3. Option Checksum (OCS).....................................9
5.4. Alternate Checksum (ACS).................................10
5.5. Lite (LITE)..............................................10
5.6. Maximum Segment Size (MSS)...............................12
5.7. Timestamps (TIME)........................................13
5.8. Fragmentation (FRAG).....................................13
5.8.1. Coupling FRAG with LITE.............................16
5.9. Authentication and Encryption (AE).......................16
5.10. Experimental (EXP)......................................17
6. UDP API Extensions............................................17
7. Whose options are these?......................................18
8. UDP options vs. UDP-Lite......................................18
9. Interactions with Legacy Devices..............................19
10. Options in a Stateless, Unreliable Transport Protocol........20
11. UDP Option State Caching.....................................20
12. Security Considerations......................................21
13. IANA Considerations..........................................22
14. References...................................................22
14.1. Normative References....................................22
14.2. Informative References..................................22
15. Acknowledgments..............................................24
Appendix A. Implementation Information...........................26
1. Introduction
Transport protocols use options as a way to extend their
capabilities. TCP [RFC793], SCTP [RFC4960], and DCCP [RFC4340]
include space for these options but UDP [RFC768] currently does not.
This document defines an experimental extension to UDP that provides
space for transport options including their generic syntax and
Touch Expires November 16, 2017 [Page 2]
Internet-Draft Transport Options for UDP May 2017
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