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Service Location Protocol (RFC2165)

IP.com Disclosure Number: IPCOM000002722D
Original Publication Date: 1997-Jun-01
Included in the Prior Art Database: 2019-Feb-15
Document File: 72 page(s) / 97K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

J. Veizades: AUTHOR [+3]

Related Documents

10.17487/RFC2165: DOI

Abstract

The Service Location Protocol provides a scalable framework for the discovery and selection of network services. Using this protocol, computers using the Internet no longer need so much static configuration of network services for network based applications. This is especially important as computers become more portable, and users less tolerant or able to fulfill the demands of network system administration. [STANDARDS-TRACK]

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 3% of the total text.

Network Working Group J. Veizades Request for Comments: 2165 @Home Network Category: Standards Track E. Guttman C. Perkins Sun Microsystems S. Kaplan June 1997

Service Location Protocol

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.

Abstract

The Service Location Protocol provides a scalable framework for the discovery and selection of network services. Using this protocol, computers using the Internet no longer need so much static configuration of network services for network based applications. This is especially important as computers become more portable, and users less tolerant or able to fulfill the demands of network system administration.

Table of Contents

1. Introduction 3 2. Terminology 3 2.1. Notation Conventions . . . . . . . . . . . . . . . . . . 5 2.2. Service Information and Predicate Representation . . . . 5 2.3. Specification Language . . . . . . . . . . . . . . . . . 6 3. Protocol Overview 6 3.1. Protocol Transactions . . . . . . . . . . . . . . . . . . 7 3.2. Schemes . . . . . . . . . . . . . . . . . . . . . . . . . 8 3.2.1. The "service:" URL scheme . . . . . . . . . . . . 9 3.3. Standard Attribute Definitions . . . . . . . . . . . . . 9 3.4. Naming Authority . . . . . . . . . . . . . . . . . . . . 10 3.5. Interpretation of Service Location Replies . . . . . . . 10 3.6. Use of TCP, UDP and Multicast in Service Location . . . . 10 3.6.1. Multicast vs. Broadcast . . . . . . . . . . . . 11 3.6.2. Service-Specific Multicast Address . . . . . . . 11 3.7. Service Location Scaling, and Multicast Operating Modes . 12

Veizades, et. al. Standards Track [Page 1]

RFC 2165 Service Location Protocol June 1997

4. Service Location General Message Format 14 4.1. Use of Transaction IDs (XIDs) . . . . . . . . . . . . . . 15 4.2. URL Entries . . . . . . . . . . . . . . . . . . . . . . . 16 4.3. Authentication Blocks . . . . . . . . . . . . . . . . . . 17 4.4. URL Entry Lifetime . . . . . . . . . . . . . . . . . . . 19 5. Service Request Message Format 19 5.1. Service Request Usage . . . . . . . . . . . . . . . . . . 22 5.2. Directory Agent Discovery Request . . . . . . . . . . . . 23 5.3. Explanation of Terms of Predicate Grammar . . . . . . . . 24 5.4. Service Request Predicate Grammar . . . . . . . . . . . . 26 5.5. String Matching for Requests . . . . . . . . . . . . . . 27 6. Service Reply Message Format 28 7. Service Type Request Message Format 29 8. Service Type Reply Message Format 31 9. Service Registration Message Format 32 10. Service Acknowledgement Message Format 35 11. Service Deregister Message Format 37 12. Attribute Request Message Format 38 13. Attribute Reply Message Format 40 14. Directory Agent Advertisement Message Form...

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