Delay-Tolerant Networking TCP Convergence-Layer Protocol
RFC 7242
| Document | Type |
RFC - Experimental
(June 2014; No errata)
Was draft-irtf-dtnrg-tcp-clayer (dtnrg RG)
|
|
|---|---|---|---|
| Last updated | 2014-06-13 | ||
| Replaces | draft-demmer-dtnrg-tcp-clayer | ||
| Stream | IRTF | ||
| Formats | plain text pdf html bibtex | ||
| IETF conflict review | conflict-review-irtf-dtnrg-tcp-clayer | ||
| Stream | IRTF state | Published RFC | |
| Consensus Boilerplate | Yes | ||
| Document shepherd | Joerg Ott | ||
| IESG | IESG state | RFC 7242 (Experimental) | |
| Telechat date | |||
| Responsible AD | (None) | ||
| Send notices to | (None) | ||
| IANA | IANA review state | Version Changed - Review Needed | |
| IANA action state | RFC-Ed-Ack | ||
Internet Research Task Force (IRTF) M. Demmer
Request for Comments: 7242 UC Berkeley
Category: Experimental J. Ott
ISSN: 2070-1721 Aalto University
S. Perreault
June 2014
Delay-Tolerant Networking TCP Convergence-Layer Protocol
Abstract
This document describes the protocol for the TCP-based convergence
layer for Delay-Tolerant Networking (DTN). It is the product of the
IRTF's DTN Research Group (DTNRG).
Status of This Memo
This document is not an Internet Standards Track specification; it is
published for examination, experimental implementation, and
evaluation.
This document defines an Experimental Protocol for the Internet
community. This document is a product of the Internet Research Task
Force (IRTF). The IRTF publishes the results of Internet-related
research and development activities. These results might not be
suitable for deployment. This RFC represents the consensus of the
Delay-Tolerant Networking Research Group of the Internet Research
Task Force (IRTF). Documents approved for publication by the IRSG
are not a candidate for any level of Internet Standard; see 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/rfc7242.
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
carefully, as they describe your rights and restrictions with respect
to this document.
Demmer, et al. Experimental [Page 1]
RFC 7242 DTN TCP Convergence Layer June 2014
Table of Contents
1. Introduction ....................................................2
2. Definitions .....................................................4
2.1. Definitions Specific to the TCPCL Protocol .................4
3. General Protocol Description ....................................5
3.1. Bidirectional Use of TCP Connection ........................6
3.2. Example Message Exchange ...................................6
4. Connection Establishment ........................................7
4.1. Contact Header .............................................8
4.2. Validation and Parameter Negotiation ......................10
5. Established Connection Operation ...............................11
5.1. Message Type Codes ........................................11
5.2. Bundle Data Transmission (DATA_SEGMENT) ...................12
5.3. Bundle Acknowledgments (ACK_SEGMENT) ......................13
5.4. Bundle Refusal (REFUSE_BUNDLE) ............................14
5.5. Bundle Length (LENGTH) ....................................15
5.6. KEEPALIVE Feature (KEEPALIVE) .............................16
6. Connection Termination .........................................17
6.1. Shutdown Message (SHUTDOWN) ...............................17
6.2. Idle Connection Shutdown ..................................18
7. Security Considerations ........................................19
8. IANA Considerations ............................................20
8.1. Port Number ...............................................20
8.2. Protocol Versions .........................................20
8.3. Message Types .............................................20
8.4. REFUSE_BUNDLE Reason Codes ................................21
8.5. SHUTDOWN Reason Codes .....................................21
9. Acknowledgments ................................................21
10. References ....................................................21
10.1. Normative References .....................................21
10.2. Informative References ...................................21
1. Introduction
This document describes the TCP-based convergence-layer protocol for
Delay-Tolerant Networking. Delay-Tolerant Networking is an end-to-
end architecture providing communications in and/or through highly
stressed environments, including those with intermittent
connectivity, long and/or variable delays, and high bit error rates.
More detailed descriptions of the rationale and capabilities of these
networks can be found in "Delay-Tolerant Network Architecture"
[RFC4838].
An important goal of the DTN architecture is to accommodate a wide
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