Hi,
I have one comment for this draft. In Section 3.3 Message Format, I would
prefer that if a Session Signaling message is received where any of the section
count fields are not zero, the receiver MUST respond with an error code, e.g.
FORMERR, but MUST NOT terminate the connection. My reason is that in order to
ignore any non-zero count fields, the receiving software must have code to walk
all the sections and this code would effectively be useless, but would still
have to be properly maintained. The soft error response is required to make it
possible for a future client to probe servers for support for a future Session
Signaling based feature that uses the RR sections.
Jan.
On 3/13/17, 7:44 PM, "DNSOP on behalf of internet-dra...@ietf.org"
<dnsop-boun...@ietf.org on behalf of internet-dra...@ietf.org> wrote:
A New Internet-Draft is available from the on-line Internet-Drafts
directories.
This draft is a work item of the Domain Name System Operations of the IETF.
Title : DNS Session Signaling
Authors : Ray Bellis
Stuart Cheshire
John Dickinson
Sara Dickinson
Allison Mankin
Tom Pusateri
Filename : draft-ietf-dnsop-session-signal-02.txt
Pages : 25
Date : 2017-03-13
Abstract:
The EDNS(0) Extension Mechanism for DNS is explicitly defined to only
have "per-message" semantics. This document defines a new Session
Signaling Opcode used to communicate persistent "per-session"
operations, expressed using type-length-value (TLV) syntax, and
defines an initial set of TLVs used to manage session timeouts and
termination.
The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-dnsop-session-signal/
There's also a htmlized version available at:
https://tools.ietf.org/html/draft-ietf-dnsop-session-signal-02
A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-dnsop-session-signal-02
Please note that it may take a couple of minutes from the time of submission
until the htmlized version and diff are available at tools.ietf.org.
Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/
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