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Subject: Lisa's Apps Area Activity Report for June 2008
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News, updates

IMAPEXT WG closed down with publication of its various RFCs (see  
below) .

My vacation plans: July 4 to 12, July 22-25, Aug 4-5, Aug 11-15

Apps Meetings and related in Dublin
	Jul 28	0900: Applications Area Open Meeting
			1520: IDNABIS
			1740: EAI
	Jul 29	0900: HTTPBIS
					Also this time slot: ALTO BOF: "Application-Layer Traffic  
Optimization"
			1300: Not apps but related: TSVAREA has Stanislav Shalunov talking  
about BitTorrent's protocol
			1520: IDNABIS
	Jul 30	0900: MORG BOF: Message Organization
	Jul 31	0900: VCardDav
			1300: SIEVE
					Also this time slot: TANA BOF: "Techniques for Advanced  
Networking Applications"
	Aug 1	0900: LEMONADE

In case you missed it when first announced like I did, the Peer-to- 
Peer discussions related to the TANA and ALTO BOFs and the workshop  
back in May, are on the list "p2pi@ietf.org"

Document Status and Progress

Active Documents: my action
  - draft-sanchez-webdav-current-principal (Proposed Standard): Did AD  
review.  Need to look up whether this functionality already exists.
  - draft-ietf-sieve-editheader (Proposed Standard): IESG Evaluation  
resulted in a few changes.  Checking RFC Editor notes with doc shepherd.
  - draft-adolf-dvb-urn (Informational): Checking with other ADs to  
see if we can approve publication of this document.

Stalled, in review, waiting on other:
  - draft-ietf-calsify-rfc2445bis (Proposed Standard):  Discussing  
issues that came up in AD Review with WG. Expect new version at some  
point?
  - draft-ietf-lemonade-msgevent (Proposed Standard): Last call  
finished, waiting for authors to deal with last call input
  - draft-snell-atompub-bidi (Proposed Standard): A couple changes  
probably required after IESG Evaluation.
  - draft-resnick-2822upd (Draft Standard): Just needs an impl'n  
report to be approved by IESG.
  - draft-klensin-rfc2821bis (Draft Standard): Under appeal.
  - draft-ietf-eai-dsn (Experimental): In IESG Evaluation
  - draft-ietf-sieve-notify-mailto:  Finished IETF Last Call, IANA has  
issues 	

Finished Processing -- new in RFC Ed queue and new RFCs
  - draft-freed-sieve-date-index (Proposed Standard): Now in RFC Queue
  - draft-monrad-sipping-3gpp-urn-namespace (Informational): Now in  
RFC Queue
  - RFC 5257, Experimental
	"IMAP ANNOTATE Extension"
  - RFC 4551, Proposed Standard
	"IMAP Extension for Conditional STORE operation or quick flag changes  
resynchronization"
  - RFC 5255, Proposed Standard
	"Internet Message Access Protocol Internationalization"
  - RFC 5258, Proposed Standard
	"IMAP4 LIST Command Extensions"
  - RFC 5256, Proposed Standard
	"INTERNET MESSAGE ACCESS PROTOCOL - SORT AND THREAD EXTENSIONS"

WG Status
   CALSIFY: WG discussing 2445bis issues raised by AD.
   HTTPBIS:  See summary of activity: http://lists.w3.org/Archives/Public/ietf-http-wg/2008AprJun/0397.html
   IDNABIS:  Two sessions scheduled for Dublin. .
   SIEVE: Recharter is up for IESG Evaluation.
   USEFOR: No activity. 
  
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<html><body style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; =
-webkit-line-break: after-white-space; "><div><br></div><div><b>News, =
updates</b></div><div><br></div><div>IMAPEXT WG closed down with =
publication of its various RFCs (see below) =
.&nbsp;</div><div><br></div><div>My vacation plans: July 4 to 12, July =
22-25, Aug 4-5, Aug 11-15</div><div><br></div><div>Apps Meetings and =
related in Dublin</div><div><span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span>Jul 28<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>0900: =
Applications Area Open Meeting<br></div><div><span =
class=3D"Apple-tab-span" style=3D"white-space:pre">			=
</span>1520: IDNABIS<br></div><div><span class=3D"Apple-tab-span" =
style=3D"white-space:pre">			</span>1740: =
EAI<br></div><div><span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span>Jul 29<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>0900: =
HTTPBIS<br></div><div><span class=3D"Apple-tab-span" =
style=3D"white-space:pre">					=
</span>Also this time slot: ALTO BOF: "Application-Layer Traffic =
Optimization"<br></div><div><span class=3D"Apple-tab-span" =
style=3D"white-space:pre">			</span>1300: Not apps =
but related: TSVAREA has Stanislav Shalunov talking about BitTorrent's =
protocol&nbsp;<br></div><div><span class=3D"Apple-tab-span" =
style=3D"white-space:pre">			</span>1520: =
IDNABIS<br></div><div><span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span>Jul 30<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>0900: =
<b>MORG BOF:</b> Message Organization</div><div><b><span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span><span =
class=3D"Apple-style-span" style=3D"font-weight: normal;">Jul 31<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>0900: =
VCardDav</span><br></b></div><div><span class=3D"Apple-tab-span" =
style=3D"white-space:pre">			</span>1300: =
SIEVE<br></div><div><span class=3D"Apple-tab-span" =
style=3D"white-space:pre">					=
</span>Also this time slot: TANA BOF: "Techniques for Advanced =
Networking Applications"<br></div><div><span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span>Aug 1<span class=3D"Apple-tab-span"=
 style=3D"white-space:pre">	</span>0900: =
LEMONADE<br></div><div><br></div><div>In case you missed it when first =
announced like I did, the Peer-to-Peer discussions related to the TANA =
and ALTO BOFs and the workshop back in May, are on the list "<a =
href=3D"mailto:p2pi@ietf.org">p2pi@ietf.org</a>"&nbsp;</div><div><br></div=
><div><b>Document Status and =
Progress</b></div><div><b><br></b></div><div><b><span =
class=3D"Apple-style-span" style=3D"font-weight: normal; "><div =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; "><i>Active Documents: my action</i></div><div =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; font: normal normal normal 12px/normal Helvetica; =
min-height: 14px; "><div style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; font: normal normal normal =
12px/normal Helvetica; ">&nbsp;- draft-sanchez-webdav-current-principal =
(Proposed Standard): Did AD review. &nbsp;Need to look up whether this =
functionality already exists.</div><div style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal =
normal normal 12px/normal Helvetica; =
">&nbsp;-&nbsp;draft-ietf-sieve-editheader (Proposed Standard): IESG =
Evaluation resulted in a few changes. &nbsp;Checking RFC Editor notes =
with doc shepherd.</div></div><div style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal =
normal normal 12px/normal Helvetica; min-height: 14px; "><div =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; "><div style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; "><div style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; =
">&nbsp;-&nbsp;draft-adolf-dvb-urn (Informational): Checking with other =
ADs to see if we can approve publication of this document.</div><div =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; "><br></div></div></div></div><div style=3D"margin-top: =
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; =
"><i>Stalled, in review, waiting on other:</i></div><div =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; font: normal normal normal 12px/normal Helvetica; =
min-height: 14px; "><div style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; font: normal normal normal =
12px/normal Helvetica; ">&nbsp;- draft-ietf-calsify-rfc2445bis (Proposed =
Standard): &nbsp;Discussing issues that came up in AD Review with WG. =
Expect new version at some point?</div></div><div style=3D"margin-top: =
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: =
normal normal normal 12px/normal Helvetica; min-height: 14px; =
">&nbsp;-&nbsp;draft-ietf-lemonade-msgevent (Proposed Standard): Last =
call finished, waiting for authors to deal with last call =
input</div><div style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; font: normal normal normal =
12px/normal Helvetica; min-height: 14px; =
">&nbsp;-&nbsp;draft-snell-atompub-bidi (Proposed Standard): A couple =
changes probably required after IESG Evaluation.</div><div =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">&nbsp;-&nbsp;draft-resnick-2822upd (Draft Standard): =
Just needs an impl'n report to be approved by IESG.</div><div =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; "><i>&nbsp;-&nbsp;</i>draft-klensin-rfc2821bis (Draft =
Standard): Under appeal.</div><div><div><div style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal =
normal normal 12px/normal Helvetica; min-height: 14px; =
">&nbsp;-&nbsp;draft-ietf-eai-dsn (Experimental): In IESG =
Evaluation</div></div><div style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; font: normal normal normal =
12px/normal Helvetica; min-height: 14px; ">&nbsp;- =
draft-ietf-sieve-notify-mailto: &nbsp;Finished IETF Last Call, IANA has =
issues&nbsp;<span class=3D"Apple-tab-span" style=3D"white-space: pre; ">	=
</span></div></div><div style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; "><div style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><div =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; "><br></div></div></div><div style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><i>Finished =
Processing -- new in RFC Ed queue and new RFCs</i></div><div =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; font: normal normal normal 12px/normal Helvetica; =
min-height: 14px; ">&nbsp;-&nbsp;draft-freed-sieve-date-index (Proposed =
Standard): Now in RFC Queue</div><div style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal =
normal normal 12px/normal Helvetica; min-height: 14px; ">&nbsp;- =
draft-monrad-sipping-3gpp-urn-namespace (Informational): Now in RFC =
Queue</div><div style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; font: normal normal normal =
12px/normal Helvetica; min-height: 14px; ">&nbsp;- RFC 5257, =
Experimental</div><div style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; font: normal normal normal =
12px/normal Helvetica; min-height: 14px; "><span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span>"IMAP ANNOTATE =
Extension"</div><div style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; font: normal normal normal =
12px/normal Helvetica; min-height: 14px; ">&nbsp;- RFC 4551, Proposed =
Standard</div><div style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; font: normal normal normal =
12px/normal Helvetica; min-height: 14px; "><span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span>"IMAP Extension for Conditional =
STORE operation&nbsp;or quick flag changes resynchronization"</div><div =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; font: normal normal normal 12px/normal Helvetica; =
min-height: 14px; ">&nbsp;- RFC 5255, Proposed Standard</div><div =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; font: normal normal normal 12px/normal Helvetica; =
min-height: 14px; "><span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span>"Internet Message Access Protocol =
Internationalization"</div><div style=3D"margin-top: 0px; margin-right: =
0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal =
12px/normal Helvetica; min-height: 14px; ">&nbsp;- RFC 5258, Proposed =
Standard</div><div style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; font: normal normal normal =
12px/normal Helvetica; min-height: 14px; "><span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span>"IMAP4 LIST Command =
Extensions"</div><div style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; font: normal normal normal =
12px/normal Helvetica; min-height: 14px; ">&nbsp;- RFC 5256, Proposed =
Standard</div><div style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; font: normal normal normal =
12px/normal Helvetica; min-height: 14px; "><span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span>"INTERNET MESSAGE ACCESS PROTOCOL =
- SORT AND THREAD EXTENSIONS"</div><div style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal =
normal normal 12px/normal Helvetica; min-height: 14px; "><br></div><div =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; "><b>WG Status</b></div><div style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">&nbsp; =
CALSIFY: WG discussing 2445bis issues raised by AD.</div><div =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">&nbsp;&nbsp;HTTPBIS: &nbsp;See summary of =
activity:&nbsp;<a =
href=3D"http://lists.w3.org/Archives/Public/ietf-http-wg/2008AprJun/0397.h=
tml">http://lists.w3.org/Archives/Public/ietf-http-wg/2008AprJun/0397.html=
</a></div><div style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; ">&nbsp;&nbsp;IDNABIS: &nbsp;Two =
sessions scheduled for Dublin. .</div><div style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; =
">&nbsp;&nbsp;SIEVE: Recharter is up for IESG Evaluation.</div><div =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">&nbsp;&nbsp;USEFOR: No activity. =
&nbsp;</div></span></b></div>
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From apps-discuss-bounces@ietf.org  Mon Jul  7 06:50:58 2008
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Date: Mon, 07 Jul 2008 09:50:53 -0400
From: Cyrus Daboo <cyrus@daboo.name>
To: apps-discuss@ietf.org, Cullen Jennings <fluffy@cisco.com>
Subject: draft-jennings-http-srv-00
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Hi,
Just saw this posted: 
<http://www.ietf.org/internet-drafts/draft-jennings-http-srv-00.txt>. I am 
in the process of defining SRV record lookups for CalDAV and CardDAV as 
well.

The HTTP SRV draft proposes both an 'http' and an 'https' service type. 
However, comments here: <http://www.dns-sd.org/ServiceTypes.html> for the 
https service suggest that 'https' should not be used.

What do people think? Should there be a separate 'https' SRV service type? 
If so, then should I define both 'caldav'/'caldavs' and 
'carddav'/'carddavs', or instead just rely on the http redirect approach 
with a single service type? Or perhaps, 'caldav' and 'carddav' should be 
specified in terms of the http service, e.g. 'caldav.http' and 
'caldav.https'.

Also, why isn't there an IANA registry of SRV service types? The port 
numbers registry is not sufficient.

-- 
Cyrus Daboo

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On 2008-7-7, at 16:50, ext Cyrus Daboo wrote:
> Also, why isn't there an IANA registry of SRV service types? The  
> port numbers registry is not sufficient.

FYI, some transport folks have started to bring the documented IANA  
ports guidelines in line with reality. (Watch for draft-ietf-tsvwg- 
iana-ports-00 later today.)

Part of that effort is to finally move the SRV registry over to IANA,  
but that hasn't happened yet. But it's on the to-do list.

Lars
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From apps-discuss-bounces@ietf.org  Mon Jul  7 07:42:54 2008
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On Mon, Jul 07, 2008 at 05:24:28PM +0300, Lars Eggert wrote:
> On 2008-7-7, at 16:50, ext Cyrus Daboo wrote:
> >Also, why isn't there an IANA registry of SRV service types? The  
> >port numbers registry is not sufficient.

we've had this topic in DNSOP more than once when it came to review of
documents trying to make use of SRV.  There is no registry and RFC 2782
has the Applicability Statement for a reason.  Ironically, during the
processing of RFC 2782 the use of http as an example was carefully avoided.

> FYI, some transport folks have started to bring the documented IANA  
> ports guidelines in line with reality. (Watch for draft-ietf-tsvwg- 
> iana-ports-00 later today.)
> 
> Part of that effort is to finally move the SRV registry over to IANA,  
> but that hasn't happened yet. But it's on the to-do list.

There are a couple of DNS caveats, including, but not limited to, "backwards
compatibility" issues especially in those cases where SRV is retroactively
introduced for existing services.  I'm looking forward to the draft you
mentioned.

-Peter
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> > Part of that effort is to finally move the SRV registry 
> > over to IANA, but that hasn't happened yet.  But it's on 
> > the to-do list.
> 
> There are a couple of DNS caveats, including, but not limited 
> to, "backwards compatibility" issues especially in those cases 
> where SRV is retroactively introduced for existing services. 

Like when MX was introduced.  HTTP, at least, would be easier,
as an HTTP redirect can point 'legacy' clients towards the 
correct resource.  Such redirection was not possible with SMTP.

Safari has experience with SRV queries; we should ask Stuart
Cheshire (who is now on the IAB) to share their experiences.

-d

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Date: Mon, 07 Jul 2008 11:13:32 -0400
From: Cyrus Daboo <cyrus@daboo.name>
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Hi Dan,

--On July 7, 2008 8:08:27 AM -0700 Dan Wing <dwing@cisco.com> wrote:

> Safari has experience with SRV queries; we should ask Stuart
> Cheshire (who is now on the IAB) to share their experiences.

Take a look at the http and https definitions at 
<http://www.dns-sd.org/ServiceTypes.html> which I think is fairly 
representative of what is going on. But these discussions should definitely 
involve Stuart too.

-- 
Cyrus Daboo

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This draft proposes the age old idea of using SRV records for HTTP. I  
love to get peoples thoughts over the next month or so.

Thanks, Cullen


Begin forwarded message:

> From: Internet-Drafts@ietf.org
> Date: July 6, 2008 7:45:01 PM PDT (CA)
> To: i-d-announce@ietf.org
> Subject: I-D Action:draft-jennings-http-srv-00.txt
> Reply-To: internet-drafts@ietf.org
>
> A New Internet-Draft is available from the on-line Internet-Drafts  
> directories.
>
> 	Title           : DNS SRV Records for HTTP
> 	Author(s)       : C. Jennings
> 	Filename        : draft-jennings-http-srv-00.txt
> 	Pages           : 5
> 	Date            : 2008-07-06
>
> This document specifies a mechanism for an HTTP client to perform a
> DNS SRV lookup to find an HTTP server.
>
> The draft is being discussed on the apps-discuss@ietf.org list.
>
> A URL for this Internet-Draft is:
> http://www.ietf.org/internet-drafts/draft-jennings-http-srv-00.txt
>
> Internet-Drafts are also available by anonymous FTP at:
> ftp://ftp.ietf.org/internet-drafts/
>
> Below is the data which will enable a MIME compliant mail reader
> implementation to automatically retrieve the ASCII version of the
> Internet-Draft.

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> _______________________________________________
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The draft proposes a HTTP based API to update DNS records similar to  
the system at dyndns.org. Be pleased to get peoples thoughts but I'm  
going to be slow responding due until after the Dublin meeting.

Thanks, Cullen


Begin forwarded message:

> From: Internet-Drafts@ietf.org
> Date: July 6, 2008 7:45:01 PM PDT (CA)
> To: i-d-announce@ietf.org
> Subject: I-D Action:draft-jennings-app-dns-update-00.txt
> Reply-To: internet-drafts@ietf.org
>
> A New Internet-Draft is available from the on-line Internet-Drafts  
> directories.
>
> 	Title           : HTTP API for Updating DNS Records
> 	Author(s)       : C. Jennings
> 	Filename        : draft-jennings-app-dns-update-00.txt
> 	Pages           : 9
> 	Date            : 2008-07-06
>
> This specification defines a simple HTTP based scheme for clients to
> update DNS records.
>
> The draft is being discussed on the apps-discuss@ietf.org list.
>
> A URL for this Internet-Draft is:
> http://www.ietf.org/internet-drafts/draft-jennings-app-dns-update-00.txt
>
> Internet-Drafts are also available by anonymous FTP at:
> ftp://ftp.ietf.org/internet-drafts/
>
> Below is the data which will enable a MIME compliant mail reader
> implementation to automatically retrieve the ASCII version of the
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At 9:10 PM -0700 7/6/08, Cullen Jennings wrote:
>This draft proposes the age old idea of using SRV records for HTTP. I
>love to get peoples thoughts over the next month or so.
>
>Thanks, Cullen
>

Those tiny, white specks you see on the horizon, bobbing up and
down on the waves of change are on a ship.  That ship might, using a
powerful set of lenses, see the ship that has sailed off carrying this idea.
>From where we stand, we cannot even see that ship any more.  It
is far, far below our horizon. 

Having standard browsers change behavior on this one falls
into the category of "not very likely", to put it mildly.  You
give as one of your driving use cases:

   For example, a portal such as Facebook often acts a web client and
   calls specific HTTP-based APIs on other web servers.  These APIs may
   require the use of this specification.  In this situation, the end
   user's web browser might not do the SRV lookup when it browsed to the
   portal web pages, but the HTTP calls that the portal made out to
   other sites to generate the content would use this mechanism.

That would create a (possibly temporary, possibly permanent)
situation in which different classes of application did different things
to resolve the same URI scheme.  Given that the same device
could have both applications (e.g. browser and web server on
the same desktop/laptop), that means they would have to call
different libraries or have code specific to the API.  As we've
discovered in the land of Unicode versioning, relying on the
version of the library you access is tricky and not very likely
to work.  So we really need new APIs completely for this
and some way of disambiguating the situations in which
you call them vs. today's HTTP.  Re-using the same scheme
for this makes it very hard to get that right.   (And I suspect
the security considerations of both coexisting for the foreseeable
future are more than your draft suggests). 

If facebook needs this, they can mint a new URI scheme and run
up a U-NAPTR mechanism that allows them to do cool re-writing.
That gets them a lot more than port numbers (which, in internal
APIs aren't klugy enough to matter much). I'd encourage registration
of that scheme, naturally, but since it is in internal APIs, most things
won't have to know or care.  If there turns out to be a groundswell
of need for interoperability among these APIs, we can produce some
new scheme that covers that need.  But re-using the string
HTTP for it doesn't seem like a good idea to me.

I know I fall on the extreme end of the "strings are cheap"
view of URI schemes, but I think I'm squarely in the middle of
"ambiguity is expensive".  At this stage, this proposal creates
ambiguity (is this X old enough to do A/AAAA only or will it
do SRV then A/AAAA?) for something that seems easily handled
in other ways.

	two cents,
				Ted








>Begin forwarded message:
>
>> From: Internet-Drafts@ietf.org
>> Date: July 6, 2008 7:45:01 PM PDT (CA)
>> To: i-d-announce@ietf.org
>> Subject: I-D Action:draft-jennings-http-srv-00.txt
>> Reply-To: internet-drafts@ietf.org
>>
>> A New Internet-Draft is available from the on-line Internet-Drafts
>> directories.
>>
>>       Title           : DNS SRV Records for HTTP
>>       Author(s)       : C. Jennings
>>       Filename        : draft-jennings-http-srv-00.txt
>>       Pages           : 5
>>       Date            : 2008-07-06
>>
>> This document specifies a mechanism for an HTTP client to perform a
>> DNS SRV lookup to find an HTTP server.
>>
>> The draft is being discussed on the apps-discuss@ietf.org list.
>>
>> A URL for this Internet-Draft is:
> > http://www.ietf.org/internet-drafts/draft-jennings-http-srv-00.txt
>>
>> Internet-Drafts are also available by anonymous FTP at:
>> ftp://ftp.ietf.org/internet-drafts/
>>
>> Below is the data which will enable a MIME compliant mail reader
>> implementation to automatically retrieve the ASCII version of the
> > Internet-Draft.
>
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Date: Mon, 07 Jul 2008 18:01:45 -0400
From: John C Klensin <john-ietf@jck.com>
To: Ted Hardie <hardie@qualcomm.com>, Cullen Jennings <fluffy@cisco.com>,
	apps-discuss@ietf.org
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I rarely do this, but

+1

emphatically.  One URI scheme, one resolution mechanism.

    john


--On Monday, 07 July, 2008 14:11 -0700 Ted Hardie
<hardie@qualcomm.com> wrote:

> At 9:10 PM -0700 7/6/08, Cullen Jennings wrote:
>> This draft proposes the age old idea of using SRV records for
>> HTTP. I love to get peoples thoughts over the next month or
>> so.
>> 
>> Thanks, Cullen
>> 
> 
> Those tiny, white specks you see on the horizon, bobbing up and
> down on the waves of change are on a ship.  That ship might,
> using a powerful set of lenses, see the ship that has sailed
> off carrying this idea. From where we stand, we cannot even
> see that ship any more.  It is far, far below our horizon. 
> 
> Having standard browsers change behavior on this one falls
> into the category of "not very likely", to put it mildly.  You
> give as one of your driving use cases:
> 
>    For example, a portal such as Facebook often acts a web
> client and    calls specific HTTP-based APIs on other web
> servers.  These APIs may    require the use of this
> specification.  In this situation, the end    user's web
> browser might not do the SRV lookup when it browsed to the
> portal web pages, but the HTTP calls that the portal made out
> to    other sites to generate the content would use this
> mechanism.
> 
> That would create a (possibly temporary, possibly permanent)
> situation in which different classes of application did
> different things to resolve the same URI scheme.  Given that
> the same device could have both applications (e.g. browser and
> web server on the same desktop/laptop), that means they would
> have to call different libraries or have code specific to the
> API.  As we've discovered in the land of Unicode versioning,
> relying on the version of the library you access is tricky and
> not very likely to work.  So we really need new APIs
> completely for this and some way of disambiguating the
> situations in which you call them vs. today's HTTP.  Re-using
> the same scheme for this makes it very hard to get that right.
> (And I suspect the security considerations of both coexisting
> for the foreseeable future are more than your draft suggests). 
> 
> If facebook needs this, they can mint a new URI scheme and run
> up a U-NAPTR mechanism that allows them to do cool re-writing.
> That gets them a lot more than port numbers (which, in internal
> APIs aren't klugy enough to matter much). I'd encourage
> registration of that scheme, naturally, but since it is in
> internal APIs, most things won't have to know or care.  If
> there turns out to be a groundswell of need for
> interoperability among these APIs, we can produce some new
> scheme that covers that need.  But re-using the string HTTP
> for it doesn't seem like a good idea to me.
> 
> I know I fall on the extreme end of the "strings are cheap"
> view of URI schemes, but I think I'm squarely in the middle of
> "ambiguity is expensive".  At this stage, this proposal creates
> ambiguity (is this X old enough to do A/AAAA only or will it
> do SRV then A/AAAA?) for something that seems easily handled
> in other ways.
> 
> 	two cents,
> 				Ted
> 
> 
> 
> 
> 
> 
> 
> 
>> Begin forwarded message:
>> 
>>> From: Internet-Drafts@ietf.org
>>> Date: July 6, 2008 7:45:01 PM PDT (CA)
>>> To: i-d-announce@ietf.org
>>> Subject: I-D Action:draft-jennings-http-srv-00.txt
>>> Reply-To: internet-drafts@ietf.org
>>> 
>>> A New Internet-Draft is available from the on-line
>>> Internet-Drafts directories.
>>> 
>>>       Title           : DNS SRV Records for HTTP
>>>       Author(s)       : C. Jennings
>>>       Filename        : draft-jennings-http-srv-00.txt
>>>       Pages           : 5
>>>       Date            : 2008-07-06
>>> 
>>> This document specifies a mechanism for an HTTP client to
>>> perform a DNS SRV lookup to find an HTTP server.
>>> 
>>> The draft is being discussed on the apps-discuss@ietf.org
>>> list.
>>> 
>>> A URL for this Internet-Draft is:
>> > http://www.ietf.org/internet-drafts/draft-jennings-http-srv
>> > -00.txt
>>> 
>>> Internet-Drafts are also available by anonymous FTP at:
>>> ftp://ftp.ietf.org/internet-drafts/
>>> 
>>> Below is the data which will enable a MIME compliant mail
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>> 
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Cullen Jennings wrote:

> a HTTP based API to update DNS records similar to the system at
> dyndns.org.  Be pleased to get peoples thoughts

Interesting.  I've implemented a simple dyndns update client, the
main trick is to get this right in hardware, and then stick to it
for some *decades* (sic!).  Discuss it also with the dyndns folks.

In the record parameters I miss MX and SPF among others.  I'm not
sure about "MUST https", how about SHOULD ?  Dyndns allows more
than one "host".  You have that as domain, clearly you don't want
to limit it to hosts, but allowing more than one might be good.

In the examples ITYM one "?" to start the query part with the 1st
name=value pair, but later the conventional separator is "&", not
"?".  

Apart from 0 and -1, do those indices actually work with DNS ?
What a client sees as second record might not be the second
record in a RR set from a server's POV.

Example 4.2 actually defines two MX records, it doesn't "update"
them.  If the index is supposed to be either -1, 0, or n+1 (for
n existing records) this might work.  But then index=1 has the
same effect as index=0, and n+1 has the same effect as index=-1,
so something is still odd with those indices.

How about s/index/action/ and:
action=0 kill all, optionally create new first
action=1 keep all, add new record

If action=1 matches an existing record it's a noop, no harm done.

A very interesting part in the dyndns protocol is that clients
MUST NOT update anything unless it has changed.  They go as far 
as demanding to maintain persistent state (surviving a reboot).

They also allow to omit the IP, taking the IP of the query as
default (when update clients cannot figure out what the public
IP is).

 Frank

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> -----Original Message-----
> From: apps-discuss-bounces@ietf.org 
> [mailto:apps-discuss-bounces@ietf.org] On Behalf Of Cullen Jennings
> Sent: Sunday, July 06, 2008 9:12 PM
> To: apps-discuss@ietf.org
> Subject: draft-jennings-app-dns-update-00
> 
> 
> The draft proposes a HTTP based API to update DNS records similar to  
> the system at dyndns.org. Be pleased to get peoples thoughts but I'm  
> going to be slow responding due until after the Dublin meeting.

It seems the GET method is inappropriate because you're causing a side-effect
(updating of the DNS), <http://www.w3.org/DesignIssues/Axioms.html#state>.

-d

> Thanks, Cullen
> 
> 
> Begin forwarded message:
> 
> > From: Internet-Drafts@ietf.org
> > Date: July 6, 2008 7:45:01 PM PDT (CA)
> > To: i-d-announce@ietf.org
> > Subject: I-D Action:draft-jennings-app-dns-update-00.txt
> > Reply-To: internet-drafts@ietf.org
> >
> > A New Internet-Draft is available from the on-line Internet-Drafts  
> > directories.
> >
> > 	Title           : HTTP API for Updating DNS Records
> > 	Author(s)       : C. Jennings
> > 	Filename        : draft-jennings-app-dns-update-00.txt
> > 	Pages           : 9
> > 	Date            : 2008-07-06
> >
> > This specification defines a simple HTTP based scheme for clients to
> > update DNS records.
> >
> > The draft is being discussed on the apps-discuss@ietf.org list.
> >
> > A URL for this Internet-Draft is:
> > 
> http://www.ietf.org/internet-drafts/draft-jennings-app-dns-upd
> ate-00.txt
> >
> > Internet-Drafts are also available by anonymous FTP at:
> > ftp://ftp.ietf.org/internet-drafts/
> >
> > Below is the data which will enable a MIME compliant mail reader
> > implementation to automatically retrieve the ASCII version of the
> > Internet-Draft.
> 

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From: Peter Koch <pk@DENIC.DE>
To: Cullen Jennings <fluffy@cisco.com>
Subject: Re: draft-jennings-app-dns-update-00
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On Sun, Jul 06, 2008 at 09:12:24PM -0700, Cullen Jennings wrote:
> 
> The draft proposes a HTTP based API to update DNS records similar to  
> the system at dyndns.org. Be pleased to get peoples thoughts but I'm  

a cursory review raises these questions from a DNS protocol and operational
perspective:

1) We do have Dynamic Updates and EPP as "provisioning" protocols.
   Which deficiencies is this approach trying to address in particular?

2) The list of RR types is pretty arbitrary. Some RR type independence in
   the spirit of RFC 3597 would be urgently needed, making error "501"
   not occur.

3) How is the SOA serial increment initiated?

4) Interaction with DNSSEC needs to be described

5) What kind of intra-RRSet ordering is assumed in section 3?

6) Why would a user be allowed to add/modify/delete arbitrary RRSets?

NITS:
   o SRV RRs require domain names as targets , not IP addresses
   o The reference to RFC 1464 ngling - which is OK, since 1464 has no
     practical relevance
   o The draft is aiming at Standards Track, but references the Experimental
     RFC 5205 in a way that should be normative

-Peter
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Dan Wing wrote:
 
> It seems the GET method is inappropriate because
> you're causing a side-effect (updating of the DNS)

This needs some words about caching, doesn't it ?  
I forgot that when I asked why it has "MUST https".

 Frank

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On Sun, Jul 06, 2008 at 09:12:24PM -0700,
 Cullen Jennings <fluffy@cisco.com> wrote 
 a message of 85 lines which said:

> The draft proposes a HTTP based API to update DNS records similar to the 
> system at dyndns.org. 

This is yet another "DNS modification" API. You may also consider
".tel":

http://www.telnic.net/developers-landing2.html

And others such as Slicehost:

http://articles.slicehost.com/2008/5/13/slicemanager-api-documentation
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On Tue, Jul 8, 2008 at 1:26 AM, Dan Wing <dwing@cisco.com> wrote:
>
>
>> -----Original Message-----
>> From: apps-discuss-bounces@ietf.org
>> [mailto:apps-discuss-bounces@ietf.org] On Behalf Of Cullen Jennings
>> Sent: Sunday, July 06, 2008 9:12 PM
>> To: apps-discuss@ietf.org
>> Subject: draft-jennings-app-dns-update-00
>>
>>
>> The draft proposes a HTTP based API to update DNS records similar to
>> the system at dyndns.org. Be pleased to get peoples thoughts but I'm
>> going to be slow responding due until after the Dublin meeting.
>
> It seems the GET method is inappropriate because you're causing a side-effect
> (updating of the DNS), <http://www.w3.org/DesignIssues/Axioms.html#state>.

Yes, most definitely.  GET should be used when you want to retrieve
records, not change them.  PUT seems the right  method to use for
updating existing records, while POST seems appropriate for adding new
records.

Kudos for not running out and inventing a whole new DNS-specific
update protocol though.

Mark.
-- 
Mark Baker. Ottawa, Ontario, CANADA. http://www.markbaker.ca
Coactus; Web-inspired integration strategies http://www.coactus.com
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On Tue, Jul 08, 2008 at 12:41:44PM -0400,
 Mark Baker <distobj@acm.org> wrote 
 a message of 34 lines which said:

> PUT seems the right method to use for updating existing records,
> while POST seems appropriate for adding new records.

That's not what RFC 2616 says.

   The fundamental difference between the POST and PUT requests is
   reflected in the different meaning of the Request-URI. The URI in a
   POST request identifies the resource that will handle the enclosed
   entity.
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On Tue, Jul 8, 2008 at 12:47 PM, Stephane Bortzmeyer <bortzmeyer@nic.fr> wrote:
> On Tue, Jul 08, 2008 at 12:41:44PM -0400,
>  Mark Baker <distobj@acm.org> wrote
>  a message of 34 lines which said:
>
>> PUT seems the right method to use for updating existing records,
>> while POST seems appropriate for adding new records.
>
> That's not what RFC 2616 says.
>
>   The fundamental difference between the POST and PUT requests is
>   reflected in the different meaning of the Request-URI. The URI in a
>   POST request identifies the resource that will handle the enclosed
>   entity.

I don't see how that contradicts what I said.

Mark.
-- 
Mark Baker. Ottawa, Ontario, CANADA. http://www.markbaker.ca
Coactus; Web-inspired integration strategies http://www.coactus.com
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Subject: Re: draft-jennings-app-dns-update-00
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On 8 jul 2008, at 07.58, Peter Koch wrote:

> On Sun, Jul 06, 2008 at 09:12:24PM -0700, Cullen Jennings wrote:
>>
>> The draft proposes a HTTP based API to update DNS records similar to
>> the system at dyndns.org. Be pleased to get peoples thoughts but I'm
>
> a cursory review raises these questions from a DNS protocol and  
> operational
> perspective:
>
> 1) We do have Dynamic Updates and EPP as "provisioning" protocols.
>   Which deficiencies is this approach trying to address in particular?

Specifically I see need for explicit text on why Dynamic Updates is  
"not good enough".

    Patrik

> 2) The list of RR types is pretty arbitrary. Some RR type  
> independence in
>   the spirit of RFC 3597 would be urgently needed, making error "501"
>   not occur.
>
> 3) How is the SOA serial increment initiated?
>
> 4) Interaction with DNSSEC needs to be described
>
> 5) What kind of intra-RRSet ordering is assumed in section 3?
>
> 6) Why would a user be allowed to add/modify/delete arbitrary RRSets?
>
> NITS:
>   o SRV RRs require domain names as targets , not IP addresses
>   o The reference to RFC 1464 ngling - which is OK, since 1464 has no
>     practical relevance
>   o The draft is aiming at Standards Track, but references the  
> Experimental
>     RFC 5205 in a way that should be normative
>
> -Peter
> _______________________________________________
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Mark Baker writes:
> Kudos for not running out and inventing a whole new DNS-specific
> update protocol though.

That would have been "REinventing" - see RFC 2136, "Dynamic Updates in
the Domain Name System", P. Vixie (Ed.), April 1997.
-- 
Simon.
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On Jul 7, 2008, at 10:26 PM, Dan Wing (dwing) wrote:

>
>
> > -----Original Message-----
> > From: apps-discuss-bounces@ietf.org
> > [mailto:apps-discuss-bounces@ietf.org] On Behalf Of Cullen Jennings
> > Sent: Sunday, July 06, 2008 9:12 PM
> > To: apps-discuss@ietf.org
> > Subject: draft-jennings-app-dns-update-00
> >
> >
> > The draft proposes a HTTP based API to update DNS records similar to
> > the system at dyndns.org. Be pleased to get peoples thoughts but I'm
> > going to be slow responding due until after the Dublin meeting.
>
> It seems the GET method is inappropriate because you're causing a  
> side-effect
> (updating of the DNS), <http://www.w3.org/DesignIssues/Axioms.html#state 
> >.
>
> -d

Yep, agree - a few people have pointed this out to me. 
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Peter - many thanks - appreciate your comments and would like to talk  
to you more about this

On Jul 7, 2008, at 10:58 PM, Peter Koch wrote:

> On Sun, Jul 06, 2008 at 09:12:24PM -0700, Cullen Jennings wrote:
> >
> > The draft proposes a HTTP based API to update DNS records similar to
> > the system at dyndns.org. Be pleased to get peoples thoughts but I'm
>
> a cursory review raises these questions from a DNS protocol and  
> operational
> perspective:
>
> 1) We do have Dynamic Updates and EPP as "provisioning" protocols.
>    Which deficiencies is this approach trying to address in  
> particular?
>

Clearly this is the fundamental question in trying to decide what to  
do with this draft. This approach is very simplistic with less  
features than other but approaches. However, an simple HTTP approach  
seems to be one that an is gaining a fair amount of adoption in actual  
deployments.
>
>
> 2) The list of RR types is pretty arbitrary. Some RR type  
> independence in
>    the spirit of RFC 3597 would be urgently needed, making error "501"
>    not occur.
>
I can easily imagine a parameter with the record type and a second  
parameter with the value.  Interesting the implementors of the servers  
don't seem to be keen on that - hard to tell why but some part of it  
is they don't want to negotiate capabilities. No matter what happened,  
saying all record types need to be supported is very unlikely to be  
implemented and at the same time the draft needs to define some  
minimum set needs to specified.

>
>
> 3) How is the SOA serial increment initiated?
>
I was sort of hoping the draft did not have to get into this. Ideas on  
what you think is needed?
>
>
> 4) Interaction with DNSSEC needs to be described
>
Not sure what to say. If the records are signed or not seem somewhat  
separable topic than  this.
>
>
> 5) What kind of intra-RRSet ordering is assumed in section 3?
>
good point - I suspect that there should be no assumptions about the  
order used here and what might actually end up in DNS
>
>
> 6) Why would a user be allowed to add/modify/delete arbitrary RRSets?
>
The whole security model is very simplistic, a given user is  
authorized (or not authorized) to update anything in a domain.   
Suggestions?
>
>
> NITS:
>    o SRV RRs require domain names as targets , not IP addresses
>
oops
>
>    o The reference to RFC 1464 ngling - which is OK, since 1464 has no
>      practical relevance
>    o The draft is aiming at Standards Track, but references the  
> Experimental
>      RFC 5205 in a way that should be normative
>
hmm - probably not real important one way or the other but why do you  
think this should be a normative reference? I'm just passing a string  
which happens to cary some data that
>
>
> -Peter

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thanks - I did not realize how caldav was doing this.

On Jul 7, 2008, at 6:50 AM, Cyrus Daboo wrote:

> Hi,
> Just saw this posted: <http://www.ietf.org/internet-drafts/draft-jennings-http-srv-00.txt 
> >. I am in the process of defining SRV record lookups for CalDAV and  
> CardDAV as well.
>
> The HTTP SRV draft proposes both an 'http' and an 'https' service  
> type. However, comments here: <http://www.dns-sd.org/ 
> ServiceTypes.html> for the https service suggest that 'https' should  
> not be used.

Hmm - I don't see how the security would work on the redirect  
approach. If one started wanting a HTTPS connection to foo.com, found  
a _http SRV for foo.com, connected to it, then got a redirect to  
bar.com,  then when you do a TLS to bar.com, does the cert need to  
match foo.com or bar.com.

Anyways, the redirect seem unnecessary, I sort of lean to do it the  
same way SIP does but agree we need to sort this out and do it a  
common way.

>
>
> What do people think? Should there be a separate 'https' SRV service  
> type? If so, then should I define both 'caldav'/'caldavs' and  
> 'carddav'/'carddavs', or instead just rely on the http redirect  
> approach with a single service type? Or perhaps, 'caldav' and  
> 'carddav' should be specified in terms of the http service, e.g.  
> 'caldav.http' and 'caldav.https'.
>
> Also, why isn't there an IANA registry of SRV service types?
yep, I agree, I tried to work on this a long time ago and the pain  
threshold was too high but I think some folks might be slowly getting  
to it.

> The port numbers registry is not sufficient.

>
>
> -- 
> Cyrus Daboo
>

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I am subscribed to this list (just checked) but all my posts seem to  
be moderated. What is the moderation policy of this list.

Thanks, Cullen


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Cullen Jennings wrote:
> 
> thanks - I did not realize how caldav was doing this.
> 
> On Jul 7, 2008, at 6:50 AM, Cyrus Daboo wrote:
> 
>> Hi,
>> Just saw this posted: 
>> <http://www.ietf.org/internet-drafts/draft-jennings-http-srv-00.txt>. 
>> I am in the process of defining SRV record lookups for CalDAV and 
>> CardDAV as well.
>>
>> The HTTP SRV draft proposes both an 'http' and an 'https' service 
>> type. However, comments here: 
>> <http://www.dns-sd.org/ServiceTypes.html> for the https service 
>> suggest that 'https' should not be used.
> 
> Hmm - I don't see how the security would work on the redirect approach. 
> If one started wanting a HTTPS connection to foo.com, found a _http SRV 
> for foo.com, connected to it, then got a redirect to bar.com,  then when 
> you do a TLS to bar.com, does the cert need to match foo.com or bar.com.

Would RFC 4985 help here?

Peter


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(Excuse me for the bad reply that will destroy threading but I've just 
subscribed to this list and I don't have the original message to reply to. If 
you don't see any problem ignore this comment).

> The HTTP SRV draft proposes both an 'http' and an 'https' service
> type. However, comments here: <http://www.dns-sd.org/
> ServiceTypes.html> for the https service suggest that 'https' should
> not be used.

I've though this a bit and couldn't find any security flaw. I believe that 
there is no difference (regarding security) between A or CNAME records and 
SRV records.

AFAICS https security will not be degraded. In fact, using a redirect method 
is a more serious security issue since forcing users to type 
http://www.mybank.org/ makes it easier to redirect them to 
https://www.notyourbank.com/ using a Mitm attack. The key point here is that 
users will be partially *forced* to initially type http instead of https (and 
probably bookmark this). This may also be true for any links that point to 
that site.
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On 9 jul 2008, at 03.30, Cullen Jennings wrote:

>> 1) We do have Dynamic Updates and EPP as "provisioning" protocols.
>>   Which deficiencies is this approach trying to address in  
>> particular?
>
> Clearly this is the fundamental question in trying to decide what to  
> do with this draft. This approach is very simplistic with less  
> features than other but approaches. However, an simple HTTP approach  
> seems to be one that an is gaining a fair amount of adoption in  
> actual deployments.

I would like to know more what you imply with "simple", and urge you  
to add that research in the draft.

I.e. "why not use DNS dynamic update" section would make sense.

    Patrik

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From: John C Klensin <klensin@jck.com>
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Subject: FTP protocol extensions and updates
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Subject: FTP Extensions and Updates

Hi.

We have proposals for a number of FTP extensions at various
places in the queue, including
draft-peterson-streamlined-ftp-command-extensions-04 and the
long-overdue "TYPE U" proposal that was the original impetus
for what is now RFC 5198.  I have first-draft I-Ds for
TYPE U and for an IANA registry for FTP Extensions ready to go
up as soon as the pre-IETF blackout window closes.

The question now is how people would like to process these
extensions.  Mark Peterson and Doug Papenthien think their
document is just about ready to go and have implementation and
running code for its features.  "TYPE U" is essentially trivial
now that the format itself is defined.  If enough people are
interested, it might be sensible to move toward a (hopefully
short-lived) WG.  If not, it would probably make sense to
handle them as individual submissions, probably folding the
substance of my two documents into draft-peterson... in the
hope of handling everything through one Last Call.

FWIW, I don't have any particular personal investment in
any of this.  The "TYPE U" document was prepared as the
last step of what I seem to have volunteered for when I
started the Unicode stream discussion several years ago
and the registry document was started because it seemed
to be the right thing to do.  If people decide they want
a WG, I will be looking for someone who wants to take
over or share editing responsibilities on the two new drafts. 

If it is ok with Chris and Lisa, and especially if anyone has
opinions in the interim, I'd like to spend a couple of minutes
on FTP strategy at the Apps Area meeting.
 
  john


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John C Klensin wrote:

> I have first-draft I-Ds for TYPE U and for an IANA 
> registry for FTP Extensions ready to go

What is "type U", something like the "d" / "i" / "a"
in <http://tools.ietf.org/html/draft-hoffman-ftp-uri> ?

> "TYPE U" is essentially trivial now that the format
> itself is defined.

Is this supposed to obsolete "feat UTF8" in RFC 2640 ?

Looking into RFC 2640, this cries for an update, and
the ftp URIs in RFC 1738 also need to be updated.  

RFC 3659 created an "OS specific filetypes" registry
for ftp.  I'm unsure what it is, because it is empty:
http://www.iana.org/assignments/os-specific-parameters

> If enough people are interested

It would be nice to finish off RFC 1738 as part of the
"Distributed Uri Decruft Experiment".  File: and ftp:
are still waiting, and a bunch of standards track RFCs
with normative RFC 1738 references.

> move toward a (hopefully short-lived) WG.

+1

 Frank

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--On Saturday, 12 July, 2008 06:58 +0200 Frank Ellermann
<hmdmhdfmhdjmzdtjmzdtzktdkztdjz@gmail.com> wrote:

> John C Klensin wrote:
> 
>> I have first-draft I-Ds for TYPE U and for an IANA 
>> registry for FTP Extensions ready to go
> 
> What is "type U", something like the "d" / "i" / "a"
> in <http://tools.ietf.org/html/draft-hoffman-ftp-uri> ?

It is a TYPE, as defined in the FTP base spec, with values like
"A", "E", "I", or "L".

>> "TYPE U" is essentially trivial now that the format
>> itself is defined.
> 
> Is this supposed to obsolete "feat UTF8" in RFC 2640 ?

2640, despite its more general title, is entirely about use of
FTP with file systems that use non-ASCII file and directory
names and information in command streams more generally.  While
those are worthwhile and arguably necessary extensions, it is
independent of the desire to use a common-wire-format text
string type for the data stream, which is the topic of the new
I-D.  Please either study the discussion of TYPE in RFC 959 or
wait until the draft appears.

> Looking into RFC 2640, this cries for an update, and
> the ftp URIs in RFC 1738 also need to be updated.  

2640 was published nine years ago.   If it is in need of an
update now, either that update should reflect enough operational
experience to move it to Draft Standard, or the operational
experience would suggest major changes  (implying a need for
buy-in from the relevant user and vendor communities), or it has
been implemented and deployed infrequently enough that it should
be moved to Historic instead.  I don't know which case applies.

However, I would note that any attempt to update it would
probably involve a fair amount of editorial work since (i) it
uses names for sections that are no longer permitted, (ii) it
doesn't distinguish between normative and informative
references, (iii) it uses an older definition of ABNF, so that
all ABNF would need to be reviewed for consistency with the
newer version, (iv) it uses boilerplate terminology that is
inconsistent with Checklist requirements, (v) it contains
illustrative grammar rather than a single comprehensive
definitional grammar, and so on.  At least it does not appear to
contain any non-2606 domain names in examples :-(.    That list
is, of course, independent of more substantive issues such as
being defined against ISO 10646:1993, Unicode 2.0, and the old
and slightly ambiguous form of UTF-8.  
 
> RFC 3659 created an "OS specific filetypes" registry
> for ftp.  I'm unsure what it is, because it is empty:
> http://www.iana.org/assignments/os-specific-parameters
> 
>> If enough people are interested
> 
> It would be nice to finish off RFC 1738 as part of the
> "Distributed Uri Decruft Experiment".  File: and ftp:
> are still waiting, and a bunch of standards track RFCs
> with normative RFC 1738 references.
> 
>> move toward a (hopefully short-lived) WG.
> 
> +1

Yes, I think the cleanup work you identify could be strong
justification for a WG... if there are sufficient people around
who have the interest, energy, and active involvement with FTP
(i.e., "skin in the game" or "buy-in from the relevant
community") needed to populate such a WG.  Conversely, the more
work one thinks about assigning to such a WG the less likely it
is that adequate resources can be found to do that work.

    john


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At 13:58 08/07/12, Frank Ellermann wrote:

>Looking into RFC 2640, this cries for an update,

Can you be more specific? John has mentioned a long list,
is that what you thought about, or something else?

Regards,   Martin.


#-#-#  Martin J. Du"rst, Assoc. Professor, Aoyama Gakuin University
#-#-#  http://www.sw.it.aoyama.ac.jp       mailto:duerst@it.aoyama.ac.jp     

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--On Saturday, 12 July, 2008 16:50 +0900 Martin Duerst
<duerst@it.aoyama.ac.jp> wrote:

> At 13:58 08/07/12, Frank Ellermann wrote:
> 
>> Looking into RFC 2640, this cries for an update,
> 
> Can you be more specific? John has mentioned a long list,
> is that what you thought about, or something else?

For the record, I wouldn't say "cries for an update" about 2640.
If the implementation experience and interoperability results
are adequate, I think it would be good to clarify it and advance
it in level, but really no more so than with dozens (or
hundreds) of other Proposed Standard documents.

My long list was, instead, an attempt to identify things in 2640
that would require work because of the difference between norms
for construction of documents when it was written and the
expectations and requirements imposed by the IESG today.  I
believe that they represent far more work than the update Frank
thinks necessary and might act as an impediment to updating this
document.  And that is the major reason why an update or
maturity-level upgrade to it (and other FTP specs) was not
included in my initial note.

    john



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Martin Duerst wrong:
 
> John has mentioned a long list, is that what you thought about

Yes, I think he saw more points then I saw, and I wasn't sure if
he proposed an effort to get a 2640bis as DS, or something else.

I never before looked into this RFC, I checked the four "updated
by" in RFC 959, after looking in Paul's last ftp URI draft.  Any
0xFF in memos about telnet / ftp / UTF-8 attracts my attention,
once bitten...

 Frank


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On Jul 9, 2008, at 1:19 AM, Patrik F=E4ltstr=F6m wrote:

>> 1) We do have Dynamic Updates and EPP as "provisioning" protocols.
>>  Which deficiencies is this approach trying to address in particular?
>
> Specifically I see need for explicit text on why Dynamic Updates is  =

> "not good enough".

Agree this section is needed. I'm not planning to do anything with  =

this draft before (or at) Dublin but if I revise the draft, I will add  =

a section about when it is appropriate and see if anything intelligent  =

can be put there.

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The Apparea open meeting will have some time allocated to discuss FTP  
extensions -- Monday July 28 at 9:00 am in Dublin.  John Klensin  
suggested the topic so I've asked him to be on the hook for leading  
those 10 or more minutes.   We'll be discussing what work needs to be  
done on FTP and for what deployed communities (e.g. what extent), and  
if the conclusion is that the IETF needs to do some work we may even  
get to discussing how.

Current, unexpired I-Ds relating to FTP:
	http://tools.ietf.org/html/draft-peterson-streamlined-ftp-command-extensions-05
	http://tools.ietf.org/html/draft-hethmon-mcmurray-ftp-hosts-01
	http://tools.ietf.org/html/draft-rosenau-ftp-single-port-04

As always, meeting attendees are expected to read meeting documents  
before getting to the meeting!  Advance discussion on this list is  
very welcome.

Lisa


On Jul 12, 2008, at 10:24 AM, Frank Ellermann wrote:

> Martin Duerst wrong:
>
>> John has mentioned a long list, is that what you thought about
>
> Yes, I think he saw more points then I saw, and I wasn't sure if
> he proposed an effort to get a 2640bis as DS, or something else.
>
> I never before looked into this RFC, I checked the four "updated
> by" in RFC 959, after looking in Paul's last ftp URI draft.  Any
> 0xFF in memos about telnet / ftp / UTF-8 attracts my attention,
> once bitten...
>
> Frank
>
>
> _______________________________________________
> Apps-Discuss mailing list
> Apps-Discuss@ietf.org
> https://www.ietf.org/mailman/listinfo/apps-discuss

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From: Robert McMurray <robmcm@microsoft.com>
To: 'Lisa Dusseault' <lisa@osafoundation.org>, "apps-discuss@ietf.org"
	<apps-discuss@ietf.org>
Date: Wed, 16 Jul 2008 12:08:15 -0700
Subject: RE: FTP protocol extensions and updates
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Thanks, Lisa.

The remaining work item that I have for the "draft-hethmon-mcmurray-ftp-hosts-01" document is the work that I've been doing regarding how HOST works with RFC2228 - "FTP Security Extensions". (e.g. The HOST command SHOULD precede AUTH in order to ensure proper certificate matching, etc.) I will not have an update to the draft before this meeting, however.

Thanks again,
Robert

-----Original Message-----
From: Lisa Dusseault [mailto:lisa@osafoundation.org]
Sent: Wednesday, July 16, 2008 11:43 AM
To: apps-discuss@ietf.org
Cc: douglas.papenthien@rhinosoft.com; mark.peterson@rhinosoft.com; Robert McMurray; phethmon@hethmon.com; martin@rosenau-ka.de; dsomers@omz13.com
Subject: Re: FTP protocol extensions and updates


The Apparea open meeting will have some time allocated to discuss FTP
extensions -- Monday July 28 at 9:00 am in Dublin.  John Klensin
suggested the topic so I've asked him to be on the hook for leading
those 10 or more minutes.   We'll be discussing what work needs to be
done on FTP and for what deployed communities (e.g. what extent), and
if the conclusion is that the IETF needs to do some work we may even
get to discussing how.

Current, unexpired I-Ds relating to FTP:
        http://tools.ietf.org/html/draft-peterson-streamlined-ftp-command-extensions-05
        http://tools.ietf.org/html/draft-hethmon-mcmurray-ftp-hosts-01
        http://tools.ietf.org/html/draft-rosenau-ftp-single-port-04

As always, meeting attendees are expected to read meeting documents
before getting to the meeting!  Advance discussion on this list is
very welcome.

Lisa

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From apps-discuss-bounces@ietf.org  Wed Jul 16 18:52:05 2008
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Subject: Re: FTP protocol extensions and updates
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Hi.

Since I seem to have drawn the short straw, I would encourage
those who are interested in this topic to also review the note I
posted that started this thread
https://www.ietf.org/mailman/private/apps-discuss/2008-July/000072.html

As it mentions, there are two drafts in the pipe in addition to
the the ones Lisa listed.  Neither has been posted because I
missed the window, but I'll get them up as soon as I can. 

They are:

"TYPE U" (will be posted as draft-klensin-ftp-typeu-00.txt).
This draft introduces a new transfer TYPE, supplementing the
existing 
  TYPE A (ASCII)
  TYPE E (EBCDIC)
  TYPE L (Local byte)
  TYLE I (Image format, i.e., binary)
with transfer of Unicode characters as specified in RFC 5198.

And, because we are beginning to accumulate a fair number of
extension commands and will have even more if the drafts Lisa
lists are approved, a document that creates an IANA registry of
FTP extensions (will be posted as
draft-klensin-ftp-registry-00.txt).

I'm happy to make the pre-posting versions of either or both
documents available to anyone who is particularly interested.

I would also carry Lisa's discussion topic a little bit further.
FTP is, depending on how one counts, our oldest or second-oldest
application protocol.  The base spec is certainly not work done
elsewhere and then brought to the IETF.  With five drafts in
various degrees of maturity, some of them proposing multiple
extensions or updates, it seems to me that we have some
obligation, at least a moral obligation, to either decide to
look at this follow up work or to suggest where it should be
done instead.  If we decide we want to do it, the next question
is whether we have, or how we find, sufficient interest and
traction to form a WG and make progress in it or whether we have
some other theory about getting the work done.

   john


--On Wednesday, 16 July, 2008 11:42 -0700 Lisa Dusseault
<lisa@osafoundation.org> wrote:

> 
> The Apparea open meeting will have some time allocated to
> discuss FTP extensions -- Monday July 28 at 9:00 am in Dublin.
> John Klensin suggested the topic so I've asked him to be on
> the hook for leading those 10 or more minutes.   We'll be
> discussing what work needs to be done on FTP and for what
> deployed communities (e.g. what extent), and if the conclusion
> is that the IETF needs to do some work we may even get to
> discussing how.
> 
> Current, unexpired I-Ds relating to FTP:
> 	http://tools.ietf.org/html/draft-peterson-streamlined-ftp-com
> mand-extensions-05
> 	http://tools.ietf.org/html/draft-hethmon-mcmurray-ftp-hosts-01
> 	http://tools.ietf.org/html/draft-rosenau-ftp-single-port-04
> 
> As always, meeting attendees are expected to read meeting
> documents before getting to the meeting!  Advance discussion
> on this list is very welcome.

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Hi, I stumbled over an article about "SocialDNS" with a
proposal of a new go: URI scheme, and one reply pointed
out that another go: is defined in RFCs 3368 and 3367.

RFC 3367 contains a DTD for queries to and anserws from
go-servers, it has a PUBLIC "-//IETF//DTD CNRP 1.0//EN"
identifier.  Several examples use the system identifier 
"http://ietf.org/dtd/cnrp-1.0.dtd", which doesn't exist.

In theory I'd know how to fix that, send a request to
IANA for a corresponding URN, and as a side effect IANA
would store the DTD "somewhere".  The URI of this file
could then be used as system identifier, and submitted
as erratum to fix the RFC 3367 examples.

But something with this theoretical procedure is odd:

Why create an IETF URN only to get an IETF URI ?  The
URN is in practice useless, there is no resolver.  The
URI is in theory a good system identifier, but IANA
would need to know that they are not supposed to move
the DTD, forever.  

For the RFC 2070 DTD I ignored this, the rules are the
rules, and if they somehow do what is needed it's good
enough.  But now I wonder if those rules for IETF DTDs
and other schemas are actually broken.

 Frank

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https://www.ietf.org/mailman/listinfo/apps-discuss says:

  ...
  (The current archive is only available to the list members.)
  ...

I realize that apps-discuss is not an IETF working group, so I suppose it does
not need to follow IETF policy for open archives.  But are the archives closed
on purpose?

-d

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From apps-discuss-bounces@ietf.org  Mon Jul 21 14:26:56 2008
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It's an oversight I think -- as far as I can remember, this archive  
list used to be public.  This list was in a bad state for a while  
after moving off the apps server quite a few months ago.   A few days  
ago this was cleaned up so that the archive is now available but only  
to members.  I'll ask the secretariat about making it public.

Lisa

On Jul 21, 2008, at 2:06 PM, Dan Wing wrote:

> https://www.ietf.org/mailman/listinfo/apps-discuss says:
>
>  ...
>  (The current archive is only available to the list members.)
>  ...
>
> I realize that apps-discuss is not an IETF working group, so I  
> suppose it does
> not need to follow IETF policy for open archives.  But are the  
> archives closed
> on purpose?
>
> -d
>
> _______________________________________________
> Apps-Discuss mailing list
> Apps-Discuss@ietf.org
> https://www.ietf.org/mailman/listinfo/apps-discuss

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From apps-discuss-bounces@ietf.org  Mon Jul 21 14:29:05 2008
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After a moment more thought I realized I could probably do this myself  
as list administrator.  Done.  Hope there were no objections.

Lisa

On Jul 21, 2008, at 2:27 PM, Lisa Dusseault wrote:

> It's an oversight I think -- as far as I can remember, this archive  
> list used to be public.  This list was in a bad state for a while  
> after moving off the apps server quite a few months ago.   A few  
> days ago this was cleaned up so that the archive is now available  
> but only to members.  I'll ask the secretariat about making it public.
>
> Lisa
>
> On Jul 21, 2008, at 2:06 PM, Dan Wing wrote:
>
>> https://www.ietf.org/mailman/listinfo/apps-discuss says:
>>
>> ...
>> (The current archive is only available to the list members.)
>> ...
>>
>> I realize that apps-discuss is not an IETF working group, so I  
>> suppose it does
>> not need to follow IETF policy for open archives.  But are the  
>> archives closed
>> on purpose?
>>
>> -d
>>
>> _______________________________________________
>> Apps-Discuss mailing list
>> Apps-Discuss@ietf.org
>> https://www.ietf.org/mailman/listinfo/apps-discuss
>
> _______________________________________________
> Apps-Discuss mailing list
> Apps-Discuss@ietf.org
> https://www.ietf.org/mailman/listinfo/apps-discuss

_______________________________________________
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From apps-discuss-bounces@ietf.org  Thu Jul 24 14:10:31 2008
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From: "Douglas J. Papenthien" <douglas.papenthien@rhinosoft.com>
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Hello-

As one of the authors of Streamlined FTP Command Extensions draft
(draft-peterson-streamlined-ftp-command-extensions), I wanted to take a
moment to express my support for the open meeting on Monday, July 28th to
discuss pending work on the FTP protocol.  Obviously, I have a personal
interest in seeing this work to completion, however my motivations for doing
so go beyond this.

The FTP protocol may be one of the oldest protocols still in use today, but
my experiences working with the protocol over the past 9 years have shown
that it is far from being dead, irrelevant, or unimportant.  If anything,
I've seen competition for market share of FTP protocol implementations
greatly increase in that time frame.  If you believe that competition is at
all any indication of the importance of this work, then I can assure you
that it is there.  I believe that a concerted effort to consolidate some of
the additions and changes made to the protocol over the years would be
greatly beneficial to the community and welcomed by many who rely upon this
protocol for various purposes.

Unfortunately, I will not be in attendance for the meeting this coming
Monday, which is why I felt the need to express my support for it in this
forum.  However I will make full use of the Jabber room so that I can
participate in whatever capacity necessary.

Douglas J. Papenthien - Vice President
http://www.RhinoSoft.com
Voice: +1(262) 560-9627
FAX: +1(262) 560-9628



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From apps-discuss-bounces@ietf.org  Sat Jul 26 14:28:45 2008
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After the Application Area Architecture Workshop, we have continued to
discuss the App & Net Interaction model and submitted the two
Internet-Drafts.

The Model for Net and App Interaction
http://www.ietf.org/internet-drafts/draft-atarashi-netappmodel-00.txt

The VLAN Model for Applications
http://www.ietf.org/internet-drafts/draft-ninomiya-netappvlan-00.txt


Best Regards,
Ray
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After the Application Area Architecture Workshop, we have continued to
discuss the App & Net Interaction model and submitted the two
Internet-Drafts.

The Model for Net and App Interaction
http://www.ietf.org/internet-drafts/draft-atarashi-netappmodel-00.txt

The VLAN Model for Applications
http://www.ietf.org/internet-drafts/draft-ninomiya-netappvlan-00.txt


Best Regards,
Ray

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