Delay-Tolerant Networking TCP Convergence Layer Protocol Version 4
draft-ietf-dtn-tcpclv4-22
The information below is for an old version of the document | |||
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Document | Type | Active Internet-Draft (dtn WG) | |
Authors | Brian Sipos , Michael Demmer , Joerg Ott , Simon Perreault | ||
Last updated | 2020-10-26 (latest revision 2020-06-12) | ||
Replaces | draft-sipos-dtn-tcpclv4 | ||
Stream | IETF | ||
Intended RFC status | Proposed Standard | ||
Formats | pdf htmlized (tools) htmlized bibtex | ||
Reviews | |||
Stream | WG state | Submitted to IESG for Publication (wg milestone: Jul 2019 - TCP CL update... ) | |
Document shepherd | Edward Birrane | ||
Shepherd write-up | Show (last changed 2019-08-07) | ||
IESG | IESG state | IESG Evaluation::AD Followup | |
Consensus Boilerplate | Yes | ||
Telechat date |
Has a DISCUSS. Has enough positions to pass once DISCUSS positions are resolved. |
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Responsible AD | Magnus Westerlund | ||
Send notices to | Edward Birrane <edward.birrane@jhuapl.edu> | ||
IANA | IANA review state | Version Changed - Review Needed |
Delay-Tolerant Networking B. Sipos Internet-Draft RKF Engineering Intended status: Standards Track M. Demmer Expires: April 29, 2021 UC Berkeley J. Ott Aalto University S. Perreault October 26, 2020 Delay-Tolerant Networking TCP Convergence Layer Protocol Version 4 draft-ietf-dtn-tcpclv4-22 Abstract This document describes a TCP-based convergence layer (TCPCL) for Delay-Tolerant Networking (DTN). This version of the TCPCL protocol resolves implementation issues in the earlier TCPCL Version 3 of RFC7242 and updates to the Bundle Protocol (BP) contents, encodings, and convergence layer requirements in BP Version 7. Specifically, the TCPCLv4 uses CBOR-encoded BPv7 bundles as its service data unit being transported and provides a reliable transport of such bundles. This version of TCPCL also includes security and extensibility mechanisms. 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 https://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 29, 2021. Copyright Notice Copyright (c) 2020 IETF Trust and the persons identified as the document authors. All rights reserved. Sipos, et al. Expires April 29, 2021 [Page 1] Internet-Draft DTN TCPCLv4 October 2020 This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (https://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 1.1. Scope . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2. Requirements Language . . . . . . . . . . . . . . . . . . . . 5 2.1. Definitions Specific to the TCPCL Protocol . . . . . . . 5 3. General Protocol Description . . . . . . . . . . . . . . . . 9 3.1. Convergence Layer Services . . . . . . . . . . . . . . . 9 3.2. TCPCL Session Overview . . . . . . . . . . . . . . . . . 11 3.3. TCPCL States and Transitions . . . . . . . . . . . . . . 13 3.4. PKIX Environments and CA Policy . . . . . . . . . . . . . 19 3.5. Session Keeping Policies . . . . . . . . . . . . . . . . 20 3.6. Transfer Segmentation Policies . . . . . . . . . . . . . 21 3.7. Example Message Exchange . . . . . . . . . . . . . . . . 22 4. Session Establishment . . . . . . . . . . . . . . . . . . . . 23 4.1. TCP Connection . . . . . . . . . . . . . . . . . . . . . 24 4.2. Contact Header . . . . . . . . . . . . . . . . . . . . . 25 4.3. Contact Validation and Negotiation . . . . . . . . . . . 26 4.4. Session Security . . . . . . . . . . . . . . . . . . . . 27 4.4.1. Entity Identification . . . . . . . . . . . . . . . . 28 4.4.2. TLS Handshake . . . . . . . . . . . . . . . . . . . . 29 4.4.3. TLS Authentication . . . . . . . . . . . . . . . . . 30 4.4.4. Example TLS Initiation . . . . . . . . . . . . . . . 32 4.5. Message Header . . . . . . . . . . . . . . . . . . . . . 33 4.6. Session Initialization Message (SESS_INIT) . . . . . . . 34 4.7. Session Parameter Negotiation . . . . . . . . . . . . . . 36 4.8. Session Extension Items . . . . . . . . . . . . . . . . . 37 5. Established Session Operation . . . . . . . . . . . . . . . . 38 5.1. Upkeep and Status Messages . . . . . . . . . . . . . . . 38 5.1.1. Session Upkeep (KEEPALIVE) . . . . . . . . . . . . . 38 5.1.2. Message Rejection (MSG_REJECT) . . . . . . . . . . . 39Show full document text