".", which returns a set of zero or more names, The list of available instances of a given service type usingĪ query for a DNS PTR record with a name of the form Information about this instance, in a structured form using The DNS TXT record of the same name gives additional The SRV record has a name of the form "."Īnd gives the target host and port where the service instance canīe reached. This document specifies that a particular service instance can beĭescribed using a DNS SRV and DNS TXT record. This document proposes no change to the structure of DNS messages,Īnd no new operation codes, response codes, resource record types, Internet-Draft DNS-Based Service Discovery Dec 2011 1. Name Encodings in the Domain Name System. Ordering of Service Instance Name Components. Rationale for using DNS as a basis for Service Disc. Discovery of Browsing and Registration Domains. 20 7.1 Selective Instance Enumeration (Subtypes). 18 6.8 Service Instances with Multiple TXT Records. 14 6.5 Rules for Values in DNS-SD Name/Value Pairs. 13 6.4 Rules for Names in DNS-SD Name/Value Pairs. 13 6.3 DNS TXT Record Format Rules for use in DNS-SD. 11 6.1 General Format Rules for DNS TXT Records. Conventions and Terminology Used in this Document. Internet-Draft DNS-Based Service Discovery Dec 2011ġ. This Internet-Draft will expire on June 11, 2012. The list of Internet-Draft Shadow Directories can be accessed at The list of current Internet-Drafts can be accessed at Material or to cite them other than as "work in progress." It is inappropriate to use Internet-Drafts as reference Internet-Drafts are draft documents valid for a maximum of six monthsĪnd may be updated, replaced, or obsoleted by other documents at any Other groups may also distribute working documents as Internet. Task Force (IETF), its areas, and its working groups. Internet-Drafts are working documents of the Internet Engineering This Internet-Draft is submitted to IETF in full conformance with the This is referred to as DNS-based Service Discovery, or DNS-SD. Named instances of that desired service, using standard DNS queries. Looking for that service, this allows clients to discover a list of That a client is looking for, and a domain in which the client is Structured to facilitate service discovery. This document specifies how DNS resource records are named and Intended status: Standards Track Apple Inc.
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