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Socket Interface Extensions for Multicast Source Filters (RFC3678)

IP.com Disclosure Number: IPCOM000021301D
Original Publication Date: 2004-Jan-01
Included in the Prior Art Database: 2004-Jan-13
Document File: 19 page(s) / 36K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

D. Thaler: AUTHOR [+3]

Abstract

The Internet Group Management Protocol (IGMPv3) for IPv4 and the Multicast Listener Discovery (MLDv2) for IPv6 add the capability for applications to express source filters on multicast group memberships, which allows receiver applications to determine the set of senders (sources) from which to accept multicast traffic. This capability also simplifies support of one-to-many type multicast applications.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 10% of the total text.

Network Working Group D. Thaler

Request for Comments: 3678 Microsoft

Category: Informational B. Fenner

AT&T Research

B. Quinn

Stardust.com

January 2004

Socket Interface Extensions for Multicast Source Filters

Status of this Memo

This memo provides information for the Internet community. It does

not specify an Internet standard of any kind. Distribution of this

memo is unlimited.

Copyright Notice

Copyright (C) The Internet Society (2004). All Rights Reserved.

Abstract

The Internet Group Management Protocol (IGMPv3) for IPv4 and the

Multicast Listener Discovery (MLDv2) for IPv6 add the capability for

applications to express source filters on multicast group

memberships, which allows receiver applications to determine the set

of senders (sources) from which to accept multicast traffic. This

capability also simplifies support of one-to-many type multicast

applications.

This document specifies new socket options and functions to manage

source filters for IP Multicast group memberships. It also defines

the socket structures to provide input and output arguments to these

new application program interfaces (APIs). These extensions are

designed to provide access to the source filtering features, while

introducing a minimum of change into the system and providing

complete compatibility for existing multicast applications.

Table of Contents

1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 2

2. Design Considerations. . . . . . . . . . . . . . . . . . . . . 3

2.1 What Needs to be Added . . . . . . . . . . . . . . . . . . 4

2.2 Data Types . . . . . . . . . . . . . . . . . . . . . . . . 4

2.3 Headers. . . . . . . . . . . . . . . . . . . . . . . . . . 4

2.4 Structures . . . . . . . . . . . . . . . . . . . . . . . . 4

3. Overview of APIs. . . . . . . . . . . . . . . . . . . . . . . . 5

Thaler, et al. Informational [Page 1]

RFC 3678 Multicast Source Filter API January 2004

4. IPv4 Multicast Source Filter APIs . . . . . . . . . . . . . . . 6

4.1 Basic (Delta-based) API for IPv4. . . . . . . . . . . . . . 6

4.1.1 IPv4 Any-Source Multicast API. . . . . . . . . . . . 7

4.1.2 IPv4 Source-Specific Multicast API . . . . . . . . . 7

4.1.3 Error Codes. . . . . . . . . . . . . . . . . . . . . 8

4.2 Advanced (Full-state) API for IPv4. . . . . . . . . . . . . 8

4.2.1 Set Source Filter. . . . . . . . . . . . . . . . . . 8

4.2.2 Get Source Filter. . . . . . . . . . . . . . . . . . 9

5: Protocol-Independent Multicast Source Filter APIs . . . . . . . 10

5.1 Basic (Delta-based) API . . . . . . . . . . . . . . . . . . 10

5.1.1 Any-Source Multicast API . . . . . . . . . . . . . . 11

5.1.2 Source-Specific Multicast API. . . . . . . . . . . . 11

5.2 Advanced (Full-state) API . . . . . . . . . . . . . . . . . 11

5.2.1 Set Source Filter. . . . . . . . . . . . . . . . . . 11

5.2.2 Get Source Filter. . . . . . . . . . . . . . . . . . 12

6. Security Considerations. . . . . . . . . . . . . . . . . . . . 13

7. Acknowledgments. . . . . . . . . . . . . . . . . . . . . . ....