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TCP-Based Media Transport in the Session Description Protocol (SDP) (RFC4145)

IP.com Disclosure Number: IPCOM000128438D
Original Publication Date: 2005-Sep-01
Included in the Prior Art Database: 2019-Feb-12
Document File: 15 page(s) / 21K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

D. Yon: AUTHOR [+1]

Related Documents

10.17487/RFC4145: DOI

Abstract

This document describes how to express media transport over TCP using the Session Description Protocol (SDP). It defines the SDP 'TCP' protocol identifier, the SDP 'setup' attribute, which describes the connection setup procedure, and the SDP 'connection' attribute, which handles connection reestablishment. [STANDARDS-TRACK]

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 12% of the total text.

Network Working Group D. Yon Request for Comments: 4145 Tactical Software, LLC Category: Standards Track G. Camarillo Ericsson September 2005

TCP-Based Media Transport in the Session Description Protocol (SDP)

Status of this Memo

This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards" (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited.

Copyright Notice

Copyright (C) The Internet Society (2005).

Abstract

This document describes how to express media transport over TCP using the Session Description Protocol (SDP). It defines the SDP ’TCP’ protocol identifier, the SDP ’setup’ attribute, which describes the connection setup procedure, and the SDP ’connection’ attribute, which handles connection reestablishment.

Yon & Camarillo Standards Track [Page 1]

RFC 4145 Connection-Oriented Media September 2005

Table of Contents

1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3 2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 3 3. Protocol Identifier . . . . . . . . . . . . . . . . . . . . . 3 4. Setup Attribute . . . . . . . . . . . . . . . . . . . . . . . 4 4.1. The Setup Attribute in the Offer/Answer Model. . . . . . 4 5. The Connection Attribute . . . . . . . . . . . . . . . . . . . 5 5.1. Offerer Behaviour. . . . . . . . . . . . . . . . . . . . 6 5.2. Answerer Behaviour . . . . . . . . . . . . . . . . . . . 7 6. Connection Management . . . . . . . . . . . . . . . . . . . . 8 6.1. Connection Establishment . . . . . . . . . . . . . . . . 8 6.2. Connection Reestablishment . . . . . . . . . . . . . . . 8 6.3. Connection Termination . . . . . . . . . . . . . . . . . 8 7. Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 7.1. Passive/Active . . . . . . . . . . . . . . . . . . . . . 9 7.2. Actpass/Passive. . . . . . . . . . . . . . . . . . . . . 9 7.3. Existing Connection Reuse. . . . . . . . . . . . . . . . 10 7.4. Existing Connection Refusal. . . . . . . . . . . . . . . 10 8. Other Connection-Oriented Transport Protocols. . . . . . . . . 11 9. Security Considerations . . . . . . . . . . . . . . . . . . . 12 10. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 12 11. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 12 12. References . . . . . . . . . . . . . . . . . . . . . . . . . . 13 12.1. Normative References . . . . . . . . . . . . . . . . . . 13 12.2. Informative References . . . . . . . . . . . . . . . . . 13

Yon & Camarillo Standards Track [Page 2]

RFC 4145 Connection-Oriented Media September 2005

1. Introduction

The Session Description Protocol [4] provides a general-purpose format for describing multimedia sessions in announcements or invitations. SDP uses an entirely textual data format (the US-ASCII subset of UTF-8 [11]) to maximize portability amon...

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