Skip to main content

Optimizing DNS-SD query using TXT records

Document Type Expired Internet-Draft (individual)
Expired & archived
Author Ashutosh Aggarwal
Last updated 2015-01-04 (Latest revision 2014-07-03)
RFC stream (None)
Intended RFC status (None)
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
Telechat date (None)
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


DNS-SD allows a client to find a list of named instances of a service name over a particular transport within a domain of interest using standard DNS queries. As the number of potential responders increases, DNS-SD based discovery doesn't scale well. To mitigate the scaling issues, schemes to narrow down the search context would be needed. The document proposes to include key/value pairs in the form of a DNS TXT record along with the service name in the DNS query to assist with the discovery process. The DNS TXT record can be placed in the additional section of the query without requiring any changes to the structure of DNS messages.


Ashutosh Aggarwal

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)