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Date: Fri, 01 Mar 2019 04:10:05 -0500
From: "Robert Stepanek" <rsto@fastmailteam.com>
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Subject: Re: [calsify] jscalendar, alarm and related
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The next RFC update will define a SignedDuration type for alert triggers.

Cheers,
Robert

On Thu, Feb 28, 2019, at 9:06 PM, Andrew Laurence wrote:
> IIRC, negative durations are in the 8601-2 draft.
> 
> -Andrew
> 
>> On Feb 28, 2019, at 4:08 AM, Ken Murchison <murch@fastmail.com> wrote:
>> 
>> I'm in agreement with Mike and Alexander in that we should allow negative durations in jcalendar in the same fashion as iCalendar.

>> 

>> On 2/25/19 10:19 PM, Michael Douglass wrote:
>>> 

>>> On 2/25/19 22:14, Neil Jenkins wrote:
>>>> On Tue, 26 Feb 2019, at 14:12, Michael Douglass wrote:
>>>>> I don't think it needs a new syntax - it's (["+"] | "-") followed by duration.
>>>> 
>>>> That's a new syntax by definition. And that doesn't go in to the point of existing object interpretations may not support negative durations (e.g. may use an unsigned int for the internal representation); the point is you may now have compatibility issues with existing code and whether this is sufficiently better to be worth that tradeoff.
>>> What existing code? This is in reference to alarms which in icalendar are specified by negative or positive trigger values. Any reimplementation of alarm code for jscalendar will have to take account of the difference.

>>> From icalendar 3.3.6

>>>        dur-value  = (["+"] / "-") "P" (dur-date / dur-time / dur-week)
>>> 
>>> I already have a parser which handles negative durations. I already check for and disallow negative durations for events.
>>> 
>>>> Neil.
>>>> 
>>>> _______________________________________________
calsify mailing list
>>>> calsify@ietf.org
>>>> https://www.ietf.org/mailman/listinfo/calsify
>>>> 
>>> 
>>> _______________________________________________
calsify mailing list
>>> calsify@ietf.org
>>> https://www.ietf.org/mailman/listinfo/calsify
>>> 
>> -- 
Ken Murchison
Cyrus Development Team
FastMail US LLC
>> <murch.vcf>_______________________________________________
>> calsify mailing list
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>> https://www.ietf.org/mailman/listinfo/calsify
> _______________________________________________
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<!DOCTYPE html><html><head><title></title><style type="text/css">#fastmail-quoted #fastmail-quoted-fastmail-quoted p.fastmail-quoted-fastmail-quoted-MsoNormal,#fastmail-quoted  #fastmail-quoted-fastmail-quoted p.fastmail-quoted-fastmail-quoted-MsoNoSpacing{margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0px;}
#fastmail-quoted p.fastmail-quoted-MsoNormal,#fastmail-quoted  p.fastmail-quoted-MsoNoSpacing{margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0px;}

p.MsoNormal,p.MsoNoSpacing{margin:0}</style></head><body><div>The next RFC update will define a SignedDuration type for alert triggers.<br></div><div><br></div><div>Cheers,<br></div><div>Robert</div><div><br></div><div>On Thu, Feb 28, 2019, at 9:06 PM, Andrew Laurence wrote:<br></div><blockquote type="cite" id="fastmail-quoted"><div>IIRC, negative durations are in the 8601-2 draft.<br></div><div class="fastmail-quoted-"><br></div><div class="fastmail-quoted-"><div>-Andrew<br></div><div><div><br></div><blockquote class="fastmail-quoted-" type="cite"><div class="fastmail-quoted-">On Feb 28, 2019, at 4:08 AM, Ken Murchison &lt;<a class="fastmail-quoted-" href="mailto:murch@fastmail.com">murch@fastmail.com</a>&gt; wrote:<br></div><div><br></div><div class="fastmail-quoted-"><div class="fastmail-quoted-" bgcolor="#FFFFFF"><p class="fastmail-quoted-">I'm in agreement with Mike and Alexander in that we should allow
      negative durations in jcalendar in the same fashion as iCalendar.<br></p><p class="fastmail-quoted-"><br></p><div class="fastmail-quoted-moz-cite-prefix">On 2/25/19 10:19 PM, Michael Douglass
      wrote:<br></div><blockquote class="fastmail-quoted-" cite="mid:c34900f1-0af9-3264-7e31-89cdc90894a2@gmail.com" type="cite"><p class="fastmail-quoted-"><br></p><div class="fastmail-quoted-moz-cite-prefix">On 2/25/19 22:14, Neil Jenkins wrote:<br></div><blockquote class="fastmail-quoted-" cite="mid:ae20897a-939f-46f1-9dc3-22bd392a7156@beta.fastmail.com" type="cite"><div class="fastmail-quoted-">On Tue, 26 Feb 2019, at 14:12, Michael Douglass wrote:<br></div><blockquote class="fastmail-quoted-" id="fastmail-quoted-fastmail-quoted" type="cite"><div class="fastmail-quoted-">I don't think it needs a new syntax - it's (["+"] | "-")
            followed by duration.<br></div></blockquote><div class="fastmail-quoted-"><br></div><div class="fastmail-quoted-">That's a new syntax by definition. And that doesn't go in
          to the point of existing object interpretations may not
          support negative durations (e.g. may use an unsigned int for
          the internal representation); the point is you may now have
          compatibility issues with existing code and whether this is
          sufficiently better to be worth that tradeoff.<br></div></blockquote><p class="fastmail-quoted-">What existing code? This is in reference to alarms which in
        icalendar are specified by negative or positive trigger values.
        Any reimplementation of alarm code for jscalendar will have to
        take account of the difference.<br></p><p class="fastmail-quoted-">From icalendar 3.3.6<br></p><pre class="fastmail-quoted-newpage">       dur-value  = (["+"] / "-") "P" (dur-date / dur-time / dur-week)
<br></pre><div>I already have a parser which handles negative durations. I
      already check for and disallow negative durations for events.<br></div><div> <br></div><blockquote class="fastmail-quoted-" cite="mid:ae20897a-939f-46f1-9dc3-22bd392a7156@beta.fastmail.com" type="cite"><div class="fastmail-quoted-">Neil.<br></div><div><br></div><pre wrap="" class="fastmail-quoted-moz-quote-pre">_______________________________________________
calsify mailing list
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<a href="https://www.ietf.org/mailman/listinfo/calsify" class="fastmail-quoted-moz-txt-link-freetext">https://www.ietf.org/mailman/listinfo/calsify</a>
<br></pre></blockquote><div><br></div><pre wrap="" class="fastmail-quoted-moz-quote-pre">_______________________________________________
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<a href="https://www.ietf.org/mailman/listinfo/calsify" class="fastmail-quoted-moz-txt-link-freetext">https://www.ietf.org/mailman/listinfo/calsify</a>
<br></pre></blockquote><pre cols="72" class="fastmail-quoted-moz-signature">-- 
Ken Murchison
Cyrus Development Team
FastMail US LLC<br></pre></div><div><span id="fastmail-quoted-cid:BDA37FB3-B365-4905-8A51-DF2E68B13689">&lt;murch.vcf&gt;</span>_______________________________________________<br></div><div>calsify mailing list<br></div><div><a class="fastmail-quoted-" href="mailto:calsify@ietf.org">calsify@ietf.org</a><br></div><div>https://www.ietf.org/mailman/listinfo/calsify<br></div></div></blockquote></div></div><div>_______________________________________________<br></div><div>calsify mailing list<br></div><div>calsify@ietf.org<br></div><div>https://www.ietf.org/mailman/listinfo/calsify<br></div><div><br></div></blockquote><div><br></div></body></html>
--854e33f6f1c146ac936c350d922ec8ea--


From nobody Fri Mar  1 13:18:21 2019
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Subject: [calsify] calext - Requested session has been scheduled for IETF 104
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Dear Bron Gondwana,

The session(s) that you have requested have been scheduled.
Below is the scheduled session information followed by
the original request. 


    calext Session 1 (1:00 requested)
    Monday, 25 March 2019, Morning Session II 1120-1220
    Room Name: Athens/Barcelona size: 100
    ---------------------------------------------


iCalendar: https://datatracker.ietf.org/meeting/104/sessions/calext.ics

Request Information:


---------------------------------------------------------
Working Group Name: Calendaring Extensions
Area Name: Applications and Real-Time Area
Session Requester: Bron Gondwana

Number of Sessions: 1
Length of Session(s):  1 Hour
Number of Attendees: 6
Conflicts to Avoid: 
 First Priority: jmap extra dispatch




People who must be present:
  Alexey Melnikov
  Donald E. Eastlake 3rd
  Daniel Migault
  Bron Gondwana

Resources Requested:

Special Requests:
  We have some people would like to participate remotely from the USA, so please give us an afternoon slot.
---------------------------------------------------------


From nobody Tue Mar  5 04:42:46 2019
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Subject: [calsify] I-D Action: draft-ietf-calext-jscalendar-12.txt
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A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Calendaring Extensions WG of the IETF.

        Title           : JSCalendar: A JSON representation of calendar data
        Authors         : Neil Jenkins
                          Robert Stepanek
	Filename        : draft-ietf-calext-jscalendar-12.txt
	Pages           : 58
	Date            : 2019-03-05

Abstract:
   This specification defines a data model and JSON representation of
   calendar data that can be used for storage and data exchange in a
   calendaring and scheduling environment.  It aims to be an alternative
   to the widely deployed iCalendar data format and to be unambiguous,
   extendable and simple to process.  In contrast to the JSON-based jCal
   format, it is not a direct mapping from iCalendar and expands
   semantics where appropriate.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-calext-jscalendar/

There are also htmlized versions available at:
https://tools.ietf.org/html/draft-ietf-calext-jscalendar-12
https://datatracker.ietf.org/doc/html/draft-ietf-calext-jscalendar-12

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-calext-jscalendar-12


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/


From nobody Tue Mar  5 04:48:39 2019
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Date: Tue, 05 Mar 2019 07:48:31 -0500
From: "Robert Stepanek" <rsto@fastmailteam.com>
To: calsify@ietf.org
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Archived-At: <https://mailarchive.ietf.org/arch/msg/calsify/GOOMMCTSu2CQnLZptgUKMxU-e9w>
Subject: [calsify] Updated JSCalendar RFC draft version 12
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--a91ff14f54114d01aa7a955ecc537cbc
Content-Type: text/plain

Hi All,

I have just submitted version 12 <https://tools.ietf.org/html/draft-ietf-calext-jscalendar-12> of the JSCalendar RFC draft. This version includes all feedback received on this list as well as CalConnect XLIV last month in Zurich.

*Main changes:*
 * *timeZones*: this new property allows to embed custom time zones in JSCalendar objects
 * *alerts*: the alerts{offset} property has been respecified to define alert trigger offsets using negative durations, as done in iCalendar. 

*Other changes:*
 * Identifiers need only be unique within the JSCalendar object, if not noted otherwise. This has always been the case, but it is now explicitly mentioned.
 * The replyTo and participants either must both be defined, or neither.
 * Added note that the iCalendar RFC 7986 URL property should be mapped to a Link object.
 * All-day objects MUST NOT have a time zone.
 * The recurrence rule "until" property may have a non-zero time value even for all-day objects.

*Open items:*
 * None.

Please let us know of any remaining feedback as soon as possible.

Cheers,
Robert
--a91ff14f54114d01aa7a955ecc537cbc
Content-Type: text/html
Content-Transfer-Encoding: quoted-printable

<!DOCTYPE html><html><head><title></title><style type=3D"text/css">p.Mso=
Normal,p.MsoNoSpacing{margin:0}
p.MsoNormal,p.MsoNoSpacing{margin:0}</style></head><body><div>Hi All,<br=
></div><div><br></div><div>I have just submitted version <a href=3D"http=
s://tools.ietf.org/html/draft-ietf-calext-jscalendar-12">12</a> of the J=
SCalendar RFC draft. This version includes all feedback received on this=
 list as well as CalConnect XLIV last month in Zurich.<br></div><div><br=
></div><div><b>Main changes:</b><br></div><ul><li><b>timeZones</b>: this=
 new property allows to embed custom time zones in JSCalendar objects<br=
></li><li><b>alerts</b>: the alerts{offset} property has been respecifie=
d to define alert trigger offsets using negative durations, as done in i=
Calendar. <br></li></ul><div><br></div><div><b>Other changes:</b><br></d=
iv><ul><li>Identifiers need only be unique within the JSCalendar object,=
 if not noted otherwise. This has always been the case, but it is now ex=
plicitly mentioned.<br></li><li>The replyTo and participants either must=
 both be defined, or neither.<br></li><li>Added note that the iCalendar =
RFC 7986 URL property should be mapped to a Link object.<br></li><li>All=
-day objects MUST NOT have a time zone.<br></li><li>The recurrence rule =
"until" property may have a non-zero time value even for all-day objects=
.<br></li></ul><div><br></div><div><b>Open items:</b><br></div><ul><li>N=
one.<br></li></ul><div><br></div><div>Please let us know of any remainin=
g feedback as soon as possible.<br></div><div><br></div><div>Cheers,<br>=
</div><div>Robert<br></div></body></html>
--a91ff14f54114d01aa7a955ecc537cbc--


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Subject: [calsify] I-D Action: draft-ietf-calext-caldav-attachments-04.txt
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A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Calendaring Extensions WG of the IETF.

        Title           : CalDAV Managed Attachments
        Authors         : Cyrus Daboo
                          Arnaud Quillaud
                          Kenneth Murchison
	Filename        : draft-ietf-calext-caldav-attachments-04.txt
	Pages           : 39
	Date            : 2019-03-05

Abstract:
   This specification defines an extension to the calendar access
   protocol (CalDAV) to allow attachments associated with iCalendar data
   to be stored and managed on the server.

   This specification documents existing code deployed by multiple
   vendors.  It is published as an Informational specification rather
   than Standards Track due to its noncompliance with multiple best
   current practices of HTTP.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-calext-caldav-attachments/

There are also htmlized versions available at:
https://tools.ietf.org/html/draft-ietf-calext-caldav-attachments-04
https://datatracker.ietf.org/doc/html/draft-ietf-calext-caldav-attachments-04

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-calext-caldav-attachments-04


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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To: calsify@ietf.org
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From: Ken Murchison <murch@fastmail.com>
Organization: FastMail US LLC
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Subject: Re: [calsify] I-D Action: draft-ietf-calext-caldav-attachments-04.txt
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This is a multi-part message in MIME format.
--------------68F1D718DA96C2F28DA8D77A
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All,

I hope this version addresses all of the WGLC and IESG comments. If not, 
please provided suggested textto address any outstanding issues.


On 3/5/19 11:45 AM, internet-drafts@ietf.org wrote:
> A New Internet-Draft is available from the on-line Internet-Drafts directories.
> This draft is a work item of the Calendaring Extensions WG of the IETF.
>
>          Title           : CalDAV Managed Attachments
>          Authors         : Cyrus Daboo
>                            Arnaud Quillaud
>                            Kenneth Murchison
> 	Filename        : draft-ietf-calext-caldav-attachments-04.txt
> 	Pages           : 39
> 	Date            : 2019-03-05
>
> Abstract:
>     This specification defines an extension to the calendar access
>     protocol (CalDAV) to allow attachments associated with iCalendar data
>     to be stored and managed on the server.
>
>     This specification documents existing code deployed by multiple
>     vendors.  It is published as an Informational specification rather
>     than Standards Track due to its noncompliance with multiple best
>     current practices of HTTP.
>
>
> The IETF datatracker status page for this draft is:
> https://datatracker.ietf.org/doc/draft-ietf-calext-caldav-attachments/
>
> There are also htmlized versions available at:
> https://tools.ietf.org/html/draft-ietf-calext-caldav-attachments-04
> https://datatracker.ietf.org/doc/html/draft-ietf-calext-caldav-attachments-04
>
> A diff from the previous version is available at:
> https://www.ietf.org/rfcdiff?url2=draft-ietf-calext-caldav-attachments-04
>
>
> 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/
>
> _______________________________________________
> calsify mailing list
> calsify@ietf.org
> https://www.ietf.org/mailman/listinfo/calsify

-- 
Ken Murchison
Cyrus Development Team
FastMail US LLC


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Subject: Re: [calsify] JSCalendar duration vs. end time
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On 2/14/19 9:02 AM, Robert Stepanek wrote:
> During CalConnect XLIV in Zurich last week,=C2=A0discussion arose if th=
e=20
> JSCalendar duration property is enough to define the time span of an=20
> event, or if an end time should be allowed as well (see the latest=20
> spec here <https://tools.ietf.org/html/draft-ietf-calext-jscalendar-11>=
).

This was a big debate at the time 2445 was coming out. The argument was=20
that DURATION is a finite length of time. And that DTEND is a variable=20
amount of time.

My argument against DTEND was:

DTSTART:2am DTEND:2am looks meaningless, except on the date when the=20
clock kicks back 1 hour in which case it is a 1 hour meeting. And for=20
recurring meetings, 6 months later it is a zero seconds long meeting.

Similar with: DTSTART:2am DTEND:1:30am for a 30-minute meeting on=20
daylight saving change date.

Now throw in recurrences that happen to span those two dates and time=20
zone change issues per year.

DTSTART:2am DURATION:1-hour makes sense to a person reading it.

Many argued that the ~odd~ DTSTART/DTEND may be desirable. I doubt=20
anyone ever used it on purpose.

So they are not always equal. I argued for only one to exist, obviously=20
I was in the minority.

I have always been in favor of deprecating DTEND.

However - iCalendar is the spec, and other representations of it, must=20
adhere to whatever the latest spec says, or the result will be the IETF=20
has 2 or more 'iCalendar' specifications.

--=20

--
Doug Royer (http://DougRoyer.US http://SoftwareAndServices.US)


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    <div class="moz-cite-prefix">On 2/14/19 9:02 AM, Robert Stepanek
      wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:1550160126.3602072.1658018976.28709BD3@webmail.messagingengine.com">
      <meta http-equiv="content-type" content="text/html; charset=UTF-8">
      <title></title>
      <style type="text/css">p.MsoNormal,p.MsoNoSpacing{margin:0}</style>
      <div>During CalConnect XLIV in Zurich last week, discussion arose
        if the JSCalendar duration property is enough to define the time
        span of an event, or if an end time should be allowed as well
        (see the latest spec <a
          href="https://tools.ietf.org/html/draft-ietf-calext-jscalendar-11"
          moz-do-not-send="true">here</a>).<br>
      </div>
    </blockquote>
    <p>This was a big debate at the time 2445 was coming out. The
      argument was that DURATION is a finite length of time. And that
      DTEND is a variable amount of time.<br>
    </p>
    <p>My argument against DTEND was:<br>
    </p>
    <p>DTSTART:2am DTEND:2am looks meaningless, except on the date when
      the clock kicks back 1 hour in which case it is a 1 hour meeting. 
      And for recurring meetings, 6 months later it is a zero seconds
      long meeting.</p>
    <p>Similar with: DTSTART:2am DTEND:1:30am for a 30-minute meeting on
      daylight saving change date.</p>
    <p>Now throw in recurrences that happen to span those two dates and
      time zone change issues per year.<br>
    </p>
    <p>DTSTART:2am DURATION:1-hour makes sense to a person reading it.</p>
    <p>Many argued that the ~odd~ DTSTART/DTEND may be desirable. I
      doubt anyone ever used it on purpose.<br>
    </p>
    <p>So they are not always equal. I argued for only one to exist,
      obviously I was in the minority.</p>
    <p>I have always been in favor of deprecating DTEND.</p>
    <p>However - iCalendar is the spec, and other representations of it,
      must adhere to whatever the latest spec says, or the result will
      be the IETF has 2 or more 'iCalendar' specifications.<br>
    </p>
    <pre class="moz-signature" cols="72">-- 

--
Doug Royer (<a class="moz-txt-link-freetext" href="http://DougRoyer.US">http://DougRoyer.US</a> <a class="moz-txt-link-freetext" href="http://SoftwareAndServices.US">http://SoftwareAndServices.US</a>)
</pre>
  </body>
</html>

--------------6397BEFE7B7659F64DE4E4F2--


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On Thu, Mar 7, 2019, at 2:25 AM, Doug Royer wrote:
> On 2/14/19 9:02 AM, Robert Stepanek wrote:
>> During CalConnect XLIV in Zurich last week, discussion arose if the JSCalendar duration property is enough to define the time span of an event, or if an end time should be allowed as well (see the latest spec here <https://tools.ietf.org/html/draft-ietf-calext-jscalendar-11>).
> This was a big debate at the time 2445 was coming out. The argument was that DURATION is a finite length of time. And that DTEND is a variable amount of time.

> [...]


Thanks for the insight, Doug. Much appreciated to understand the history of this.

> However - iCalendar is the spec, and other representations of it, must adhere to whatever the latest spec says, or the result will be the IETF has 2 or more 'iCalendar' specifications


JSCalendar isn't another representation of iCalendar. While the two data models have much in common, we do not aim at 100% compatibility. The spec explicitly aims to avoid ambiguities and pitfalls of iCalendar.

Cheers,
Robert
--fa9419a689714d23ad5f9e0283be0c00
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<!DOCTYPE html><html><head><title></title><style type="text/css">#fastmail-quoted p.fastmail-quoted-MsoNormal,#fastmail-quoted  p.fastmail-quoted-MsoNoSpacing{margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0px;}

p.MsoNormal,p.MsoNoSpacing{margin:0}</style></head><body><div>On Thu, Mar 7, 2019, at 2:25 AM, Doug Royer wrote:<br></div><blockquote type="cite" id="fastmail-quoted"><div class="fastmail-quoted-moz-cite-prefix">On 2/14/19 9:02 AM, Robert Stepanek
      wrote:<br></div><blockquote cite="mid:1550160126.3602072.1658018976.28709BD3@webmail.messagingengine.com" type="cite"><div>During CalConnect XLIV in Zurich last week,&nbsp;discussion arose
        if the JSCalendar duration property is enough to define the time
        span of an event, or if an end time should be allowed as well
        (see the latest spec <a href="https://tools.ietf.org/html/draft-ietf-calext-jscalendar-11">here</a>).<br></div></blockquote><p>This was a big debate at the time 2445 was coming out. The
      argument was that DURATION is a finite length of time. And that
      DTEND is a variable amount of time.<br></p><p>[...]<br></p></blockquote><div><br></div><div>Thanks for the insight, Doug. Much appreciated to understand the history of this.<br></div><div><br></div><blockquote type="cite" id="fastmail-quoted"><p>However - iCalendar is the spec, and other representations of it,
      must adhere to whatever the latest spec says, or the result will
      be the IETF has 2 or more 'iCalendar' specifications<br></p></blockquote><div><br></div><div>JSCalendar isn't another representation of iCalendar. While the two data models have much in common, we do not aim at 100% compatibility. The spec explicitly aims to avoid ambiguities and pitfalls of iCalendar.<br></div><div><br></div><div>Cheers,<br></div><div>Robert<br></div></body></html>
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Subject: [calsify] Request for adoption: draft-gondwana-caldav-scheduling-controls
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--c2362e88b3714f9b876a22a459e86298
Content-Type: text/plain

It's a bit cheeky asking this as a recent chair myself, but I had started work on this document as a purely FastMail suggestion, and during discussion at CalConnect last month in Zurich it came up that Google had done much the same thing themselves to handle bulk import, so I ran the idea past Lucia and put this draft together.

There's still some work to do, and I'm happy to hand over authorship to somebody else if anyone wants it, or to continue working on it myself. I've renamed things to be a bit more consistent than our implementation at FastMail, but of course we'd update to match the standard once the spec is done.

https://datatracker.ietf.org/doc/draft-gondwana-caldav-scheduling-controls/

(still plenty of work to do on it, but the bones are there)

I believe this is within the scope of this group's existing charter and would like to see it adopted.

Regards,

Bron.

--
 Bron Gondwana, CEO, FastMail Pty Ltd
 brong@fastmailteam.com


--c2362e88b3714f9b876a22a459e86298
Content-Type: text/html
Content-Transfer-Encoding: quoted-printable

<!DOCTYPE html><html><head><title></title><style type=3D"text/css">p.Mso=
Normal,p.MsoNoSpacing{margin:0}</style></head><body><div style=3D"font-f=
amily:Arial;">It's a bit cheeky asking this as a recent chair myself, bu=
t I had started work on this document as a purely FastMail suggestion, a=
nd during discussion at CalConnect last month in Zurich it came up that =
Google had done much the same thing themselves to handle bulk import, so=
 I ran the idea past Lucia and put this draft together.<br></div><div st=
yle=3D"font-family:Arial;"><br></div><div style=3D"font-family:Arial;">T=
here's still some work to do, and I'm happy to hand over authorship to s=
omebody else if anyone wants it, or to continue working on it myself.&nb=
sp; I've renamed things to be a bit more consistent than our implementat=
ion at FastMail, but of course we'd update to match the standard once th=
e spec is done.<br></div><div style=3D"font-family:Arial;"><br></div><di=
v style=3D"font-family:Arial;"><a href=3D"https://datatracker.ietf.org/d=
oc/draft-gondwana-caldav-scheduling-controls/">https://datatracker.ietf.=
org/doc/draft-gondwana-caldav-scheduling-controls/</a><br></div><div sty=
le=3D"font-family:Arial;"><br></div><div style=3D"font-family:Arial;">(s=
till plenty of work to do on it, but the bones are there)<br></div><div =
style=3D"font-family:Arial;"><br></div><div style=3D"font-family:Arial;"=
>I believe this is within the scope of this group's existing charter and=
 would like to see it adopted.<br></div><div style=3D"font-family:Arial;=
"><br></div><div style=3D"font-family:Arial;">Regards,<br></div><div sty=
le=3D"font-family:Arial;"><br>Bron.<br></div><div style=3D"font-family:A=
rial;"><br></div><div id=3D"sig56629417"><div class=3D"signature">--<br>=
</div><div class=3D"signature">&nbsp; Bron Gondwana, CEO, FastMail Pty L=
td<br></div><div class=3D"signature">&nbsp; brong@fastmailteam.com<br></=
div><div class=3D"signature"><br></div></div><div style=3D"font-family:A=
rial;"><br></div></body></html>
--c2362e88b3714f9b876a22a459e86298--


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Subject: [calsify] Proposed charter update
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--47c13fc9e8174d91841723f3b987f72f
Content-Type: text/plain

Hi all,

As your newest chair, I've been reviewing the existing charter and noticed that it's rather outdated - we've delivered most of the work mentioned in there already, and we are working on things which don't strictly fit within the charter.

This is an early draft for a replacement charter. I'd love feedback on it, and discussing a new charter is something I intend to have on the agenda for Prague.

I welcome feedback on the below!

Thanks,

Bron.

---

The Calendaring Extensions working group is chartered to develop
extensions to the iCalendar (RFC 5545), iTIP (RFC 5546), and
CalDAV (RFC 4791) standards.

This working group will do the following:

- Define a new JSON-based format for calendaring and a mapping from icalendar to the new format.

- Define a new set of iCalendar properties to improve management of alarms and default notifications on calendar events.

- Define a standard way for CalDAV clients to control the creation and delivery of scheduling messages by a server, when cleaning up after abuse, migrating events, or restoring from backups.

- Define a set of new iCalendar properties and parameters to standardise some existing experimental X- properties in common use, based on a survey of existing implementations.

- Define an extension to iCalendar to support consensus scheduling, where members of an event or task vote on alternatives.

- Maintain the existing standards for calendaring by vetting errata, and where necessary writing specifications to clarify, update or replace the existing documents.

The working group will work under the following parameters:

- The extensions developed are expected to be backwards-compatible with the existing calendar standards. Incompatibilities must be identified, minimized, and justified.

- For each set of extensions, examine their impact on the iTIP protocol (RFC 5546), and define any necessary extensions to iTIP to accommodate such impact.

- For each set of extensions, examine their impact on the CalDAV protocol (RFC 4791), and define any necessary extensions to CalDAV to accommodate such impact. Interface with the httpbis working group to ensure that any CalDAV changes are consistent with good http practices.

- Where any implementations already exist and have been shipping for some time, either document existing behaviour as well as the preferred standard, or just document the existing behaviour as an informational RFC.

The following are out of scope for the working group:

- Any change that impacts backwards compatibility with existing deployed iCalendar/iTIP/CalDAV clients and servers will be discussed by the working group with a view to minimizing disruption to deployed implementations without compromising desirable new function.

- Any attempt to develop non-Gregorian calendar systems/calculations.

---

--
 Bron Gondwana, CEO, FastMail Pty Ltd
 brong@fastmailteam.com


--47c13fc9e8174d91841723f3b987f72f
Content-Type: text/html
Content-Transfer-Encoding: quoted-printable

<!DOCTYPE html><html><head><title></title><style type=3D"text/css">p.Mso=
Normal,p.MsoNoSpacing{margin:0}</style></head><body><div style=3D"font-f=
amily:Arial;">Hi all,<br></div><div style=3D"font-family:Arial;"><br></d=
iv><div style=3D"font-family:Arial;">As your newest chair, I've been rev=
iewing the existing charter and noticed that it's rather outdated - we'v=
e delivered most of the work mentioned in there already, and we are work=
ing on things which don't strictly fit within the charter.<br></div><div=
 style=3D"font-family:Arial;"><br></div><div style=3D"font-family:Arial;=
">This is an early draft for a replacement charter.&nbsp; I'd love feedb=
ack on it, and discussing a new charter is something I intend to have on=
 the agenda for Prague.<br></div><div style=3D"font-family:Arial;"><br><=
/div><div style=3D"font-family:Arial;">I welcome feedback on the below!<=
br></div><div style=3D"font-family:Arial;"><br>Thanks,</div><div style=3D=
"font-family:Arial;"><br></div><div style=3D"font-family:Arial;">Bron.<b=
r></div><div style=3D"font-family:Arial;"><br></div><div style=3D"font-f=
amily:Arial;"><div style=3D"font-family:Arial;">---<br></div><div style=3D=
"font-family:Arial;"><br></div><div style=3D"font-family:Arial;">The Cal=
endaring Extensions working group is chartered to develop<br></div></div=
><div style=3D"font-family:Arial;">extensions to the iCalendar (RFC 5545=
), iTIP (RFC 5546), and<br></div><div style=3D"font-family:Arial;">CalDA=
V (RFC 4791) standards.<br></div><div style=3D"font-family:Arial;"><br><=
/div><div style=3D"font-family:Arial;">This working group will do the fo=
llowing:<br></div><div style=3D"font-family:Arial;"><br></div><div style=
=3D"font-family:Arial;">- Define a new JSON-based format for calendaring=
 and a mapping from icalendar to the new format.<br></div><div style=3D"=
font-family:Arial;"><br></div><div style=3D"font-family:Arial;">- Define=
 a new set of iCalendar properties to improve management of alarms and d=
efault notifications on calendar events.<br></div><div style=3D"font-fam=
ily:Arial;"><br></div><div style=3D"font-family:Arial;">- Define a stand=
ard way for CalDAV clients to control the creation and delivery of sched=
uling messages by a server, when cleaning up after abuse, migrating even=
ts, or restoring from backups.<br></div><div style=3D"font-family:Arial;=
"><br></div><div style=3D"font-family:Arial;">- Define a set of new iCal=
endar properties and parameters to standardise some existing experimenta=
l X- properties in common use, based on a survey of existing implementat=
ions.<br></div><div style=3D"font-family:Arial;"><br></div><div style=3D=
"font-family:Arial;">- Define an extension to iCalendar to support conse=
nsus scheduling, where members of an event or task vote on alternatives.=
<br></div><div style=3D"font-family:Arial;"><br></div><div style=3D"font=
-family:Arial;">- Maintain the existing standards for calendaring by vet=
ting errata, and where necessary writing specifications to clarify, upda=
te or replace the existing documents.<br></div><div style=3D"font-family=
:Arial;"><br></div><div style=3D"font-family:Arial;">The working group w=
ill work under the following parameters:<br></div><div style=3D"font-fam=
ily:Arial;"><br></div><div style=3D"font-family:Arial;">- The extensions=
 developed are expected to be backwards-compatible with the existing cal=
endar standards.&nbsp; Incompatibilities must be identified, minimized, =
and justified.<br></div><div style=3D"font-family:Arial;"><br></div><div=
 style=3D"font-family:Arial;">- For each set of extensions, examine thei=
r impact on the iTIP protocol (RFC 5546), and define any necessary exten=
sions to iTIP to accommodate such impact.<br></div><div style=3D"font-fa=
mily:Arial;"><br></div><div style=3D"font-family:Arial;">- For each set =
of extensions, examine their impact on the CalDAV protocol (RFC 4791), a=
nd define any necessary extensions to CalDAV to accommodate such impact.=
&nbsp; Interface with the httpbis working group to ensure that any CalDA=
V changes are consistent with good http practices.<br></div><div style=3D=
"font-family:Arial;"><br></div><div style=3D"font-family:Arial;">- Where=
 any implementations already exist and have been shipping for some time,=
 either document existing behaviour as well as the preferred standard, o=
r just document the existing behaviour as an informational RFC.<br></div=
><div style=3D"font-family:Arial;"><br></div><div style=3D"font-family:A=
rial;">The following are out of scope for the working group:<br></div><d=
iv style=3D"font-family:Arial;"><br></div><div style=3D"font-family:Aria=
l;">- Any change that impacts backwards compatibility with existing depl=
oyed iCalendar/iTIP/CalDAV clients and servers will be discussed by the =
working group with a view to minimizing disruption to deployed implement=
ations without compromising desirable new function.<br></div><div style=3D=
"font-family:Arial;"><br></div><div style=3D"font-family:Arial;">- Any a=
ttempt to develop non-Gregorian calendar systems/calculations.<br></div>=
<div style=3D"font-family:Arial;"><br></div><div style=3D"font-family:Ar=
ial;">---<br></div><div style=3D"font-family:Arial;"><br></div><div id=3D=
"sig56629417"><div class=3D"signature">--<br></div><div class=3D"signatu=
re">&nbsp; Bron Gondwana, CEO, FastMail Pty Ltd<br></div><div class=3D"s=
ignature">&nbsp; brong@fastmailteam.com<br></div><div class=3D"signature=
"><br></div></div><div style=3D"font-family:Arial;"><br></div></body></h=
tml>
--47c13fc9e8174d91841723f3b987f72f--


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To: Bron Gondwana <brong@fastmailteam.com>, calsify <calsify@ietf.org>
Date: Fri, 08 Mar 2019 19:00:01 +0000
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Subject: Re: [calsify] draft-gondwana-caldav-scheduling-controls
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Hello Bron,

irrespective of the WG-addoptation, CALDAV:calendar-user-address-set (https://tools.ietf.org/html/rfc6638#section-2.4.1)
defines per principal all the aliases a user has, so the server does not have to guess anything.

When the Schedule-User-Address header is skipped, your draft says, that the CALDAV:schedule-user-address property on a
calendar or user/principal shall be used.  The draft references only RFC6638 “Scheduling Extensions to CalDAV” and the
latter does not say anything about CALDAV:schedule-user-address.  Where is CALDAV:schedule-user-address defined?

Are CALDAV:schedule-user-address and CALDAV:calendar-user-address-set supposed to mean the same?

In any case, it would be good to be able to specify several addresses in the Schedule-User-Address header: an invitation
having Organizer and Attendee, where the same person is both the organizer and the attendee, but uses different
addresses for both, is supposed not to trigger any scheduling to the same person.  This assumes that the system can
match the addresses as Attendee and Organizer belonging to the same person and both addresses could arrive as headers.

Section 7:
The "Scheduling" header only allows reduction of the cases in which the server will ??? creating scheduling requests.

Regards
  Дилян

What is the difference between Scheduling: NO and 
On Fri, 2019-03-08 at 07:07 -0500, Bron Gondwana wrote:
> It's a bit cheeky asking this as a recent chair myself, but I had started work on this document as a purely FastMail suggestion, and during discussion at CalConnect last month in Zurich it came up that Google had done much the same thing themselves to handle bulk import, so I ran the idea past Lucia and put this draft together.
> 
> There's still some work to do, and I'm happy to hand over authorship to somebody else if anyone wants it, or to continue working on it myself.  I've renamed things to be a bit more consistent than our implementation at FastMail, but of course we'd update to match the standard once the spec is done.
> 
> https://datatracker.ietf.org/doc/draft-gondwana-caldav-scheduling-controls/
> 
> (still plenty of work to do on it, but the bones are there)
> 
> I believe this is within the scope of this group's existing charter and would like to see it adopted.
> 
> Regards,
> 
> Bron.
> 
> --
>   Bron Gondwana, CEO, FastMail Pty Ltd
>   brong@fastmailteam.com
> 
> 
> _______________________________________________
> calsify mailing list
> calsify@ietf.org
> https://www.ietf.org/mailman/listinfo/calsify


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To: Robert Stepanek <rsto@fastmailteam.com>, calsify@ietf.org
Date: Fri, 08 Mar 2019 19:37:50 +0000
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Subject: Re: [calsify] JSCalendar duration vs. end time
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Hello,

imagine you book a room for 3:45 hours, and want to have there a session “Topic A” for one hour, a 0:15 hours for
coffee-break and then a session “Topic B” for two hours.  You map this in iCalendar/CalDAV as (imprecise syntax):

--
DTSTART: 8am
DTEND: 9am (or if you prefer DURATION: 1h) 
SUMMARY: Topic A
UID: 1
--
DTSTART;RELTYPE=FINISHTOSTART;REL-TO=UID:1 (per https://tools.ietf.org/html/draft-ietf-calext-ical-relations - the start
is defined as the end of the other event)
DURATION: 15minutes
SUMMARY: Tee time
UID: 2
--
DTSTART:RELTYPE=FINISHTOSTAR;REL-TO=UID:2
DTEND: 11:45am
SUMMARY: Topic B
UID: 3
--

So far so good.

Now, imagine the first session get longer as expected, e.g. 75 minutes.  The last session has to end in 11:45am, because
the room is booked only until then.  Under circumstances, the only event that needs to be updated is the first one, and 
the rest of the agenda will magically align, provided draft-ietf-calext-ical-relations makes progress.

In this case, for UID:2 you have to use DURATION and for UID:3 you have to use DTEND → Both are needed.

Regards
  Дилян

On Thu, 2019-02-14 at 17:02 +0100, Robert Stepanek wrote:
> During CalConnect XLIV in Zurich last week, discussion arose if the JSCalendar duration property is enough to define the time span of an event, or if an end time should be allowed as well (see the latest spec here).
> 
> Two arguments were raised in favor of adding an end time
> It simplifies translation of VEVENTs with DTSTART/DTEND from iCalendar.
> It allows to specify recurring events with a fixed end time even in case of time gaps (e.g. a recurring night club that has to close at a fixed time for legal reasons).
> 
> Our main concerns with adding an end time are:
> Having two representations to define an event time span adds complexity. This contradicts the stated goals of JSCalendar.
> Translation of DTSTART/DTEND to duration for one-time events is in almost all cases trivial. It does not require to rewrite existing calendar data.
> The "night club scenario" isn't covered by iCalendar either, as the same exact duration of a recurring even with DTEND must be applied to all members of the generated recurrence set (see RFC 5545, section 3.8.5.3). If anything, this scenario speaks for a new parameter on the RRULE.
> Durations are guaranteed to be zero or positive, which makes it harder to produce invalid events.
> 
> As it currently stands we therefore see no need for an end time property. Please let us know if you disagree.
> 
> Thanks,
> Robert
> 
> 
> 
> 
> 
> 
> 
> _______________________________________________
> calsify mailing list
> calsify@ietf.org
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From: Steve Crocker <steve@shinkuro.com>
Date: Fri, 8 Mar 2019 14:40:22 -0500
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Subject: Re: [calsify] Timezone Service Protocol not quite complete
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Bron, et al,

In response to your note about the charter and direction of the working
group, here's a note I sent more than five(!) years ago that garnered no
response at all.  Nonetheless, I think including some sort of expected
propagation time in the specification is -- or least ought to be -- within
scope.

Steve Crocker

On Tue, Nov 5, 2013 at 5:38 PM Steve Crocker <Steve@shinkuro.com> wrote:

> I was very pleased to see the work on the Timezone Service Protocol.  I
> have no argument about the format of the data elements or actions, but the
> timing model is incomplete.  One of the motivations is make sure accurate
> timezone data is distributed in a timely fashion.  In order to make good on
> this, we need to say more about the timing.  As noted in the anecdote cited
> below, time zone changes are sometimes abrupt.  How much notice is required
> in order to make sure time zone changes are guaranteed to be propagated to
> all devices?  And on the other end of the system, how frequently do devices
> need to poll or otherwise be notified of changes?
>
> Historically, IETF protocols have tended to be a bit vague about timing
> parameters and it's been left to operational practice.  The results are
> frequently messy.  We have a chance for this one to be much clearer.  The
> timezone database now maintained by IANA is a pretty solid solution for the
> source of reliable, authoritative information, but there's not been much
> written other than anecdotes about how often the data changes and how much
> lead time is required to distribute the information.
>
> In the present draft, the only wording I could find is at the section
> 4.1.3:
>
> > Clients SHOULD NOT poll for such changes too frequently, typically once
> a day ought to be sufficient.  See Section 8 on expected client and server
> behavior regarding high request rates.
>
> and the cautions in Section 8.
>
> I don't have an axe to grind regarding the design of the protocol, but I
> will note that if the timezone data were published via DNS, both the
> throttling problem and the model of propagation time would be dealt with
> automatically.  In any case, even if there's no desire to distribute this
> data over DNS, I do believe we need to provide much stronger statements
> about the expected time to propagate changes and to be clearer about how
> the design implements such statements.
>
> Steve
>
>
>
>
> On Oct 30, 2013, at 11:23 AM, Cyrus Daboo <cyrus@daboo.name> wrote:
>
> > Hi ned+ietf@mauve.mrochek.com,
> >
> > --On October 30, 2013 at 7:52:55 AM -0700 ned+ietf@mauve.mrochek.com
> wrote:
> >
> >>>> Which argues for including the local time when the event will take
> >>>> place. If you want to mandate that the time also appear in UTC, great,
> >>>> but it's quite important that the local time also be there.
> >>
> >>> And local time should be normative to deal with such unforeseen
> >>> circumstances as a papal visit.  From the southamerica file in the TZ
> >>> database:
> >>
> >>> # From Daniel C. Sobral (1998-02-12):
> >>> # In 1997, the DS began on October 6. The stated reason was that
> >>> # because international television networks ignored Brazil's policy on
> >>> # DS, they bought the wrong times on satellite for coverage of Pope's
> >>> # visit. This year, the ending date of DS was postponed to March 1
> >>> # to help dealing with the shortages of electric power.
> >>
> >>> ;-)
> >>
> >> Good point. I agree.
> >
> > Timezones can (and do) change at very short notice in different parts of
> the world. Typically computer systems have timezone data cached as part of
> the OS, and only get updates when the OS is itself updated - often long
> after a timezone change has occurred or long after future events were
> booked but are now out of sync for participants in different timezones. To
> address that a number of folks in the calendaring and scheduling community
> have been working om a timezone service protocol - <
> https://datatracker.ietf.org/doc/draft-douglass-timezone-service/> - our
> initial focus for that has been iCalendar (RFC5545) based VTIMEZONE
> component delivery to calendar and scheduling clients and servers. However,
> we would like to also deliver OS-style timezone data to devices to break
> out of the requirement for those to be updated only when the OS itself
> updates. For unix-based OS's that means being able to deliver "raw"
> zoneinfo" data over that protocol.
> >
> > Anyway, if you are interested in that work please comment over on the
> ietf-calsify list (cc'd) - we (the authors of that draft) - intend to get
> it moving to last call soon. There are already several implementations that
> have undergone testing at the Calendaring and Scheduling Consortium
> (CalConnect) interop events, so we are happy with it, but would appreciate
> more feedback.
> >
> > --
> > Cyrus Daboo
> >
>
> _______________________________________________
> calsify mailing list
> calsify@ietf.org
> https://www.ietf.org/mailman/listinfo/calsify
>

--000000000000f98dd805839a7227
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><div dir=3D"ltr">Bron, et al,<div><br></div><div>In respon=
se to your note about the charter and direction of the working group, here&=
#39;s a note I sent more than five(!) years ago that garnered no response a=
t all.=C2=A0 Nonetheless, I think including some sort of expected propagati=
on time in the specification is -- or least ought to be -- within scope.</d=
iv><div><br></div><div>Steve Crocker</div></div><br><div class=3D"gmail_quo=
te"><div dir=3D"ltr" class=3D"gmail_attr">On Tue, Nov 5, 2013 at 5:38 PM St=
eve Crocker &lt;<a href=3D"mailto:Steve@shinkuro.com">Steve@shinkuro.com</a=
>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0px=
 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">I w=
as very pleased to see the work on the Timezone Service Protocol.=C2=A0 I h=
ave no argument about the format of the data elements or actions, but the t=
iming model is incomplete.=C2=A0 One of the motivations is make sure accura=
te timezone data is distributed in a timely fashion.=C2=A0 In order to make=
 good on this, we need to say more about the timing.=C2=A0 As noted in the =
anecdote cited below, time zone changes are sometimes abrupt.=C2=A0 How muc=
h notice is required in order to make sure time zone changes are guaranteed=
 to be propagated to all devices?=C2=A0 And on the other end of the system,=
 how frequently do devices need to poll or otherwise be notified of changes=
?<br>
<br>
Historically, IETF protocols have tended to be a bit vague about timing par=
ameters and it&#39;s been left to operational practice.=C2=A0 The results a=
re frequently messy.=C2=A0 We have a chance for this one to be much clearer=
.=C2=A0 The timezone database now maintained by IANA is a pretty solid solu=
tion for the source of reliable, authoritative information, but there&#39;s=
 not been much written other than anecdotes about how often the data change=
s and how much lead time is required to distribute the information.<br>
<br>
In the present draft, the only wording I could find is at the section 4.1.3=
:<br>
<br>
&gt; Clients SHOULD NOT poll for such changes too frequently, typically onc=
e a day ought to be sufficient.=C2=A0 See Section 8 on expected client and =
server behavior regarding high request rates.<br>
<br>
and the cautions in Section 8.<br>
<br>
I don&#39;t have an axe to grind regarding the design of the protocol, but =
I will note that if the timezone data were published via DNS, both the thro=
ttling problem and the model of propagation time would be dealt with automa=
tically.=C2=A0 In any case, even if there&#39;s no desire to distribute thi=
s data over DNS, I do believe we need to provide much stronger statements a=
bout the expected time to propagate changes and to be clearer about how the=
 design implements such statements.<br>
<br>
Steve<br>
<br>
<br>
<br>
<br>
On Oct 30, 2013, at 11:23 AM, Cyrus Daboo &lt;<a href=3D"mailto:cyrus@daboo=
.name" target=3D"_blank">cyrus@daboo.name</a>&gt; wrote:<br>
<br>
&gt; Hi <a href=3D"mailto:ned%2Bietf@mauve.mrochek.com" target=3D"_blank">n=
ed+ietf@mauve.mrochek.com</a>,<br>
&gt; <br>
&gt; --On October 30, 2013 at 7:52:55 AM -0700 <a href=3D"mailto:ned%2Bietf=
@mauve.mrochek.com" target=3D"_blank">ned+ietf@mauve.mrochek.com</a> wrote:=
<br>
&gt; <br>
&gt;&gt;&gt;&gt; Which argues for including the local time when the event w=
ill take<br>
&gt;&gt;&gt;&gt; place. If you want to mandate that the time also appear in=
 UTC, great,<br>
&gt;&gt;&gt;&gt; but it&#39;s quite important that the local time also be t=
here.<br>
&gt;&gt; <br>
&gt;&gt;&gt; And local time should be normative to deal with such unforesee=
n<br>
&gt;&gt;&gt; circumstances as a papal visit.=C2=A0 From the southamerica fi=
le in the TZ<br>
&gt;&gt;&gt; database:<br>
&gt;&gt; <br>
&gt;&gt;&gt; # From Daniel C. Sobral (1998-02-12):<br>
&gt;&gt;&gt; # In 1997, the DS began on October 6. The stated reason was th=
at<br>
&gt;&gt;&gt; # because international television networks ignored Brazil&#39=
;s policy on<br>
&gt;&gt;&gt; # DS, they bought the wrong times on satellite for coverage of=
 Pope&#39;s<br>
&gt;&gt;&gt; # visit. This year, the ending date of DS was postponed to Mar=
ch 1<br>
&gt;&gt;&gt; # to help dealing with the shortages of electric power.<br>
&gt;&gt; <br>
&gt;&gt;&gt; ;-)<br>
&gt;&gt; <br>
&gt;&gt; Good point. I agree.<br>
&gt; <br>
&gt; Timezones can (and do) change at very short notice in different parts =
of the world. Typically computer systems have timezone data cached as part =
of the OS, and only get updates when the OS is itself updated - often long =
after a timezone change has occurred or long after future events were booke=
d but are now out of sync for participants in different timezones. To addre=
ss that a number of folks in the calendaring and scheduling community have =
been working om a timezone service protocol - &lt;<a href=3D"https://datatr=
acker.ietf.org/doc/draft-douglass-timezone-service/" rel=3D"noreferrer" tar=
get=3D"_blank">https://datatracker.ietf.org/doc/draft-douglass-timezone-ser=
vice/</a>&gt; - our initial focus for that has been iCalendar (RFC5545) bas=
ed VTIMEZONE component delivery to calendar and scheduling clients and serv=
ers. However, we would like to also deliver OS-style timezone data to devic=
es to break out of the requirement for those to be updated only when the OS=
 itself updates. For unix-based OS&#39;s that means being able to deliver &=
quot;raw&quot; zoneinfo&quot; data over that protocol.<br>
&gt; <br>
&gt; Anyway, if you are interested in that work please comment over on the =
ietf-calsify list (cc&#39;d) - we (the authors of that draft) - intend to g=
et it moving to last call soon. There are already several implementations t=
hat have undergone testing at the Calendaring and Scheduling Consortium (Ca=
lConnect) interop events, so we are happy with it, but would appreciate mor=
e feedback.<br>
&gt; <br>
&gt; -- <br>
&gt; Cyrus Daboo<br>
&gt; <br>
<br>
_______________________________________________<br>
calsify mailing list<br>
<a href=3D"mailto:calsify@ietf.org" target=3D"_blank">calsify@ietf.org</a><=
br>
<a href=3D"https://www.ietf.org/mailman/listinfo/calsify" rel=3D"noreferrer=
" target=3D"_blank">https://www.ietf.org/mailman/listinfo/calsify</a><br>
</blockquote></div></div>

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From: Michael Douglass <mikeadouglass@gmail.com>
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Subject: Re: [calsify] Request for adoption: draft-gondwana-caldav-scheduling-controls
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Cyrus wrote a spec for bulk import/updates

https://github.com/apple/ccs-calendarserver/blob/master/doc/Extensions/calendarserver-bulk-change.xml

I have the impression it's used but not certain.

The spec says nothing about scheduling.

On 3/8/19 07:07, Bron Gondwana wrote:
> It's a bit cheeky asking this as a recent chair myself, but I had 
> started work on this document as a purely FastMail suggestion, and 
> during discussion at CalConnect last month in Zurich it came up that 
> Google had done much the same thing themselves to handle bulk import, 
> so I ran the idea past Lucia and put this draft together.
>
> There's still some work to do, and I'm happy to hand over authorship 
> to somebody else if anyone wants it, or to continue working on it 
> myself.  I've renamed things to be a bit more consistent than our 
> implementation at FastMail, but of course we'd update to match the 
> standard once the spec is done.
>
> https://datatracker.ietf.org/doc/draft-gondwana-caldav-scheduling-controls/
>
> (still plenty of work to do on it, but the bones are there)
>
> I believe this is within the scope of this group's existing charter 
> and would like to see it adopted.
>
> Regards,
>
> Bron.
>
> --
>   Bron Gondwana, CEO, FastMail Pty Ltd
>   brong@fastmailteam.com
>
>
>
> _______________________________________________
> calsify mailing list
> calsify@ietf.org
> https://www.ietf.org/mailman/listinfo/calsify

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<html>
  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
  </head>
  <body text="#000000" bgcolor="#FFFFFF">
    <p>Cyrus wrote a spec for bulk import/updates</p>
    <p><a class="moz-txt-link-freetext" href="https://github.com/apple/ccs-calendarserver/blob/master/doc/Extensions/calendarserver-bulk-change.xml">https://github.com/apple/ccs-calendarserver/blob/master/doc/Extensions/calendarserver-bulk-change.xml</a></p>
    <p>I have the impression it's used but not certain.</p>
    <p>The spec says nothing about scheduling.<br>
    </p>
    <div class="moz-cite-prefix">On 3/8/19 07:07, Bron Gondwana wrote:<br>
    </div>
    <blockquote type="cite"
      cite="mid:f2e29443-b5bb-42d3-bf42-6865a46ab5cf@www.fastmail.com">
      <meta http-equiv="content-type" content="text/html; charset=UTF-8">
      <title></title>
      <style type="text/css">p.MsoNormal,p.MsoNoSpacing{margin:0}</style>
      <div style="font-family:Arial;">It's a bit cheeky asking this as a
        recent chair myself, but I had started work on this document as
        a purely FastMail suggestion, and during discussion at
        CalConnect last month in Zurich it came up that Google had done
        much the same thing themselves to handle bulk import, so I ran
        the idea past Lucia and put this draft together.<br>
      </div>
      <div style="font-family:Arial;"><br>
      </div>
      <div style="font-family:Arial;">There's still some work to do, and
        I'm happy to hand over authorship to somebody else if anyone
        wants it, or to continue working on it myself.  I've renamed
        things to be a bit more consistent than our implementation at
        FastMail, but of course we'd update to match the standard once
        the spec is done.<br>
      </div>
      <div style="font-family:Arial;"><br>
      </div>
      <div style="font-family:Arial;"><a
href="https://datatracker.ietf.org/doc/draft-gondwana-caldav-scheduling-controls/"
          moz-do-not-send="true">https://datatracker.ietf.org/doc/draft-gondwana-caldav-scheduling-controls/</a><br>
      </div>
      <div style="font-family:Arial;"><br>
      </div>
      <div style="font-family:Arial;">(still plenty of work to do on it,
        but the bones are there)<br>
      </div>
      <div style="font-family:Arial;"><br>
      </div>
      <div style="font-family:Arial;">I believe this is within the scope
        of this group's existing charter and would like to see it
        adopted.<br>
      </div>
      <div style="font-family:Arial;"><br>
      </div>
      <div style="font-family:Arial;">Regards,<br>
      </div>
      <div style="font-family:Arial;"><br>
        Bron.<br>
      </div>
      <div style="font-family:Arial;"><br>
      </div>
      <div id="sig56629417">
        <div class="signature">--<br>
        </div>
        <div class="signature">  Bron Gondwana, CEO, FastMail Pty Ltd<br>
        </div>
        <div class="signature">  <a class="moz-txt-link-abbreviated" href="mailto:brong@fastmailteam.com">brong@fastmailteam.com</a><br>
        </div>
        <div class="signature"><br>
        </div>
      </div>
      <div style="font-family:Arial;"><br>
      </div>
      <br>
      <fieldset class="mimeAttachmentHeader"></fieldset>
      <pre class="moz-quote-pre" wrap="">_______________________________________________
calsify mailing list
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    </blockquote>
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From: Doug Royer <douglasroyer@gmail.com>
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Subject: Re: [calsify] JSCalendar duration vs. end time
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On 3/8/19 12:37 PM, =C3=83=C2=90=C3=82=C2=94=C3=83=C2=90=C3=82=C2=B8=C3=83=
=C2=90=C3=82=C2=BB=C3=83=C2=91=C3=82=C2=8F=C3=83=C2=90=C3=82=C2=BD=20
=C3=83=C2=90=C3=82=C2=9F=C3=83=C2=90=C3=82=C2=B0=C3=83=C2=90=C3=82=C2=BB=C3=
=83=C2=90=C3=82=C2=B0=C3=83=C2=91=C3=82=C2=83=C3=83=C2=90=C3=82=C2=B7=C3=83=
=C2=90=C3=82=C2=BE=C3=83=C2=90=C3=82=C2=B2 [Masked] wrote:
>=20
>=20
> Hello,
>=20
> imagine you book a room for 3:45 hours, and want to have there a sessio=
n =E2=80=9CTopic A=E2=80=9D for one hour, a 0:15 hours for
> coffee-break and then a session =E2=80=9CTopic B=E2=80=9D for two hours=
=2E  You map this in iCalendar/CalDAV as (imprecise syntax):
>=20
> --
> DTSTART: 8am
> DTEND: 9am (or if you prefer DURATION: 1h)
> SUMMARY: Topic A
> UID: 1
> --
> DTSTART;RELTYPE=3DFINISHTOSTART;REL-TO=3DUID:1 (per https://tools.ietf.=
org/html/draft-ietf-calext-ical-relations - the start
> is defined as the end of the other event)
> DURATION: 15minutes
> SUMMARY: Tee time
> UID: 2
> --
> DTSTART:RELTYPE=3DFINISHTOSTAR;REL-TO=3DUID:2
> DTEND: 11:45am
> SUMMARY: Topic B
> UID: 3
> --
>=20
> So far so good.
>=20
> Now, imagine the first session get longer as expected, e.g. 75 minutes.=
  The last session has to end in 11:45am, because
> the room is booked only until then.  Under circumstances, the only even=
t that needs to be updated is the first one, and
> the rest of the agenda will magically align, provided draft-ietf-calext=
-ical-relations makes progress.
>=20
> In this case, for UID:2 you have to use DURATION and for UID:3 you have=
 to use DTEND =E2=86=92 Both are needed.

So your choice is to make the calendar not match reality, or reissue=20
some new instances with the corrected values. When you re-issue new=20
instances, simply adjust them to be correct.

If you do not re-issue instances, the calendar does not match reality=20
anyway - so the point is really not relevant. Your simply picking which=20
properties in which components are incorrect.

If you reissue, simply set the 1st session end time to an accurate limit =

(or ignore it is wrong). Set the break time to the correct start time=20
and 15 minute duration (or ignore it is wrong). And set the 2nd session=20
time to the correct values.

There is no one way to solve these issues. I think that makes it=20
ambiguous and poorly designed. There is no wrong way to get it done. The =

meetings over times zone changes is a pain when implementations change=20
everything to DTEND, and relative entries are kind of correct in the=20
example you provide - or you have to reissue them anyway to make them=20
correct.

In both ways of thinking, the changed VEVENT components need to be=20
updated. It is just a matter of one of several ways of getting it done.
Which is why I say it is ambiguous. There should be one way to get it=20
done recognized by all implementations.

I assert that all VEVENTs have some kind of duration, even when zero,=20
and can never be negative. However DTEND when not in UTC, is not always=20
obvious and a real pain over time zone changes.

I have found that developers will push for the method that makes any=20
changes to their current implementation easier. And sometimes, that=20
makes for ambiguous or difficult to understand specifications.

--=20

Doug Royer - (http://DougRoyer.US)
Douglas.Royer@gmail.com
714-989-6135


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To: Doug Royer <douglasroyer@gmail.com>, calsify@ietf.org
Date: Sat, 09 Mar 2019 19:52:10 +0000
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Subject: Re: [calsify] JSCalendar duration vs. end time
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Hello Doug,

for an event with five slots, each slot containig six parallel meetings, there are 4 breaks and 30 sessions (so 34
events).  If the first slot gets prolonged/shortened, 28 events (4 breaks and 24 sessions) that are in the future, need
to be reissued, unless they have relative times.

If for each of the five slot, one of the events has relative time to the previous break, and the other parallel events
have start/stop/duration as that event, only one event per slot needs adjustment.

The benefit of having relative times (start/end) is to reissue less changes.  In this case it could be reissuing
one..four event(s) versus reissuing 28 events.  The latter option is … error prone.

Regards
  Дилян

On Fri, 2019-03-08 at 19:30 -0700, Doug Royer wrote:
> On 3/8/19 12:37 PM, ÃÂ”ÃÂ¸ÃÂ»Ã‘ÂÃÂ½ 
> ÃÂŸÃÂ°ÃÂ»ÃÂ°Ã‘ÂƒÃÂ·ÃÂ¾ÃÂ² [Masked] wrote:
> > 
> > Hello,
> > 
> > imagine you book a room for 3:45 hours, and want to have there a session “Topic A” for one hour, a 0:15 hours for
> > coffee-break and then a session “Topic B” for two hours.  You map this in iCalendar/CalDAV as (imprecise syntax):
> > 
> > --
> > DTSTART: 8am
> > DTEND: 9am (or if you prefer DURATION: 1h)
> > SUMMARY: Topic A
> > UID: 1
> > --
> > DTSTART;RELTYPE=FINISHTOSTART;REL-TO=UID:1 (per https://tools.ietf.org/html/draft-ietf-calext-ical-relations - the start
> > is defined as the end of the other event)
> > DURATION: 15minutes
> > SUMMARY: Tee time
> > UID: 2
> > --
> > DTSTART:RELTYPE=FINISHTOSTAR;REL-TO=UID:2
> > DTEND: 11:45am
> > SUMMARY: Topic B
> > UID: 3
> > --
> > 
> > So far so good.
> > 
> > Now, imagine the first session get longer as expected, e.g. 75 minutes.  The last session has to end in 11:45am, because
> > the room is booked only until then.  Under circumstances, the only event that needs to be updated is the first one, and
> > the rest of the agenda will magically align, provided draft-ietf-calext-ical-relations makes progress.
> > 
> > In this case, for UID:2 you have to use DURATION and for UID:3 you have to use DTEND → Both are needed.
> 
> So your choice is to make the calendar not match reality, or reissue 
> some new instances with the corrected values. When you re-issue new 
> instances, simply adjust them to be correct.
> 
> If you do not re-issue instances, the calendar does not match reality 
> anyway - so the point is really not relevant. Your simply picking which 
> properties in which components are incorrect.
> 
> If you reissue, simply set the 1st session end time to an accurate limit 
> (or ignore it is wrong). Set the break time to the correct start time 
> and 15 minute duration (or ignore it is wrong). And set the 2nd session 
> time to the correct values.
> 
> There is no one way to solve these issues. I think that makes it 
> ambiguous and poorly designed. There is no wrong way to get it done. The 
> meetings over times zone changes is a pain when implementations change 
> everything to DTEND, and relative entries are kind of correct in the 
> example you provide - or you have to reissue them anyway to make them 
> correct.
> 
> In both ways of thinking, the changed VEVENT components need to be 
> updated. It is just a matter of one of several ways of getting it done.
> Which is why I say it is ambiguous. There should be one way to get it 
> done recognized by all implementations.
> 
> I assert that all VEVENTs have some kind of duration, even when zero, 
> and can never be negative. However DTEND when not in UTC, is not always 
> obvious and a real pain over time zone changes.
> 
> I have found that developers will push for the method that makes any 
> changes to their current implementation easier. And sometimes, that 
> makes for ambiguous or difficult to understand specifications.
> 
> _______________________________________________
> calsify mailing list
> calsify@ietf.org
> https://www.ietf.org/mailman/listinfo/calsify


From nobody Sat Mar  9 12:02:12 2019
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Subject: Re: [calsify] JSCalendar duration vs. end time
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--------------ms040902090207060909020005
Content-Type: text/plain; charset=utf-8; format=flowed
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On 3/9/19 12:52 PM, =D0=94=D0=B8=D0=BB=D1=8F=D0=BD =D0=9F=D0=B0=D0=BB=D0=B0=
=D1=83=D0=B7=D0=BE=D0=B2 wrote:
> Hello Doug,
>=20
> for an event with five slots, each slot containig six parallel meetings=
, there are 4 breaks and 30 sessions (so 34
> events).  If the first slot gets prolonged/shortened, 28 events (4 brea=
ks and 24 sessions) that are in the future, need
> to be reissued, unless they have relative times.
>=20
> If for each of the five slot, one of the events has relative time to th=
e previous break, and the other parallel events
> have start/stop/duration as that event, only one event per slot needs a=
djustment.
>=20
> The benefit of having relative times (start/end) is to reissue less cha=
nges.  In this case it could be reissuing
> one..four event(s) versus reissuing 28 events.  The latter option is =E2=
=80=A6 error prone.
>=20
> Regards
>    =D0=94=D0=B8=D0=BB=D1=8F=D0=BD

And when they end across time zone changes, it is still a mess and=20
ambiguous. Coming up with more of the same examples  does not make it=20
unambiguous.

--=20

Doug Royer - (http://DougRoyer.US)
Douglas.Royer@gmail.com
714-989-6135


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From: Daniel Migault <daniel.migault@ericsson.com>
Date: Tue, 12 Mar 2019 20:16:49 -0400
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To: Steve Crocker <steve@shinkuro.com>
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Subject: Re: [calsify] Timezone Service Protocol not quite complete
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Thanks Steve for raising this point. Anyone opposed to add this item to the
charter ? At least that would be good to provide guidance and
quantification of the propagation so "best effort" becomes more specific.
Please provide your thoughts on how we could probably address this on the
mailing list.

Yours,
Daniel

On Fri, Mar 8, 2019 at 2:44 PM Steve Crocker <steve@shinkuro.com> wrote:

> Bron, et al,
>
> In response to your note about the charter and direction of the working
> group, here's a note I sent more than five(!) years ago that garnered no
> response at all.  Nonetheless, I think including some sort of expected
> propagation time in the specification is -- or least ought to be -- within
> scope.
>
> Steve Crocker
>
> On Tue, Nov 5, 2013 at 5:38 PM Steve Crocker <Steve@shinkuro.com> wrote:
>
>> I was very pleased to see the work on the Timezone Service Protocol.  I
>> have no argument about the format of the data elements or actions, but the
>> timing model is incomplete.  One of the motivations is make sure accurate
>> timezone data is distributed in a timely fashion.  In order to make good on
>> this, we need to say more about the timing.  As noted in the anecdote cited
>> below, time zone changes are sometimes abrupt.  How much notice is required
>> in order to make sure time zone changes are guaranteed to be propagated to
>> all devices?  And on the other end of the system, how frequently do devices
>> need to poll or otherwise be notified of changes?
>>
>> Historically, IETF protocols have tended to be a bit vague about timing
>> parameters and it's been left to operational practice.  The results are
>> frequently messy.  We have a chance for this one to be much clearer..  The
>> timezone database now maintained by IANA is a pretty solid solution for the
>> source of reliable, authoritative information, but there's not been much
>> written other than anecdotes about how often the data changes and how much
>> lead time is required to distribute the information.
>>
>> In the present draft, the only wording I could find is at the section
>> 4.1.3:
>>
>> > Clients SHOULD NOT poll for such changes too frequently, typically once
>> a day ought to be sufficient.  See Section 8 on expected client and server
>> behavior regarding high request rates.
>>
>> and the cautions in Section 8.
>>
>> I don't have an axe to grind regarding the design of the protocol, but I
>> will note that if the timezone data were published via DNS, both the
>> throttling problem and the model of propagation time would be dealt with
>> automatically.  In any case, even if there's no desire to distribute this
>> data over DNS, I do believe we need to provide much stronger statements
>> about the expected time to propagate changes and to be clearer about how
>> the design implements such statements.
>>
>> Steve
>>
>>
>>
>>
>> On Oct 30, 2013, at 11:23 AM, Cyrus Daboo <cyrus@daboo.name
>> <cyrus@daboo..name>> wrote:
>>
>> > Hi ned+ietf@mauve.mrochek.com,
>> >
>> > --On October 30, 2013 at 7:52:55 AM -0700 ned+ietf@mauve.mrochek.com
>> wrote:
>> >
>> >>>> Which argues for including the local time when the event will take
>> >>>> place. If you want to mandate that the time also appear in UTC,
>> great,
>> >>>> but it's quite important that the local time also be there.
>> >>
>> >>> And local time should be normative to deal with such unforeseen
>> >>> circumstances as a papal visit.  From the southamerica file in the TZ
>> >>> database:
>> >>
>> >>> # From Daniel C. Sobral (1998-02-12):
>> >>> # In 1997, the DS began on October 6. The stated reason was that
>> >>> # because international television networks ignored Brazil's policy on
>> >>> # DS, they bought the wrong times on satellite for coverage of Pope's
>> >>> # visit. This year, the ending date of DS was postponed to March 1
>> >>> # to help dealing with the shortages of electric power.
>> >>
>> >>> ;-)
>> >>
>> >> Good point. I agree.
>> >
>> > Timezones can (and do) change at very short notice in different parts
>> of the world. Typically computer systems have timezone data cached as part
>> of the OS, and only get updates when the OS is itself updated - often long
>> after a timezone change has occurred or long after future events were
>> booked but are now out of sync for participants in different timezones. To
>> address that a number of folks in the calendaring and scheduling community
>> have been working om a timezone service protocol - <
>> https://datatracker.ietf.org/doc/draft-douglass-timezone-service/> - our
>> initial focus for that has been iCalendar (RFC5545) based VTIMEZONE
>> component delivery to calendar and scheduling clients and servers. However,
>> we would like to also deliver OS-style timezone data to devices to break
>> out of the requirement for those to be updated only when the OS itself
>> updates. For unix-based OS's that means being able to deliver "raw"
>> zoneinfo" data over that protocol.
>> >
>> > Anyway, if you are interested in that work please comment over on the
>> ietf-calsify list (cc'd) - we (the authors of that draft) - intend to get
>> it moving to last call soon. There are already several implementations that
>> have undergone testing at the Calendaring and Scheduling Consortium
>> (CalConnect) interop events, so we are happy with it, but would appreciate
>> more feedback.
>> >
>> > --
>> > Cyrus Daboo
>> >
>>
>> _______________________________________________
>> calsify mailing list
>> calsify@ietf.org
>> https://www.ietf.org/mailman/listinfo/calsify
>>
> _______________________________________________
> calsify mailing list
> calsify@ietf.org
> https://www.ietf.org/mailman/listinfo/calsify
>

--0000000000007e291c0583eeb938
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Thanks Steve for raising this point. Anyone opposed to add=
 this item to the charter ? At least that would be good to provide guidance=
 and quantification of the propagation so &quot;best effort&quot; becomes m=
ore specific. Please provide your thoughts on how we could probably address=
 this on the mailing list.<div><div><br><div>Yours,=C2=A0</div><div>Daniel<=
/div></div></div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" clas=
s=3D"gmail_attr">On Fri, Mar 8, 2019 at 2:44 PM Steve Crocker &lt;<a href=
=3D"mailto:steve@shinkuro.com">steve@shinkuro.com</a>&gt; wrote:<br></div><=
blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-l=
eft:1px solid rgb(204,204,204);padding-left:1ex"><div dir=3D"ltr"><div dir=
=3D"ltr">Bron, et al,<div><br></div><div>In response to your note about the=
 charter and direction of the working group, here&#39;s a note I sent more =
than five(!) years ago that garnered no response at all.=C2=A0 Nonetheless,=
 I think including some sort of expected propagation time in the specificat=
ion is -- or least ought to be -- within scope.</div><div><br></div><div>St=
eve Crocker</div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" clas=
s=3D"gmail_attr">On Tue, Nov 5, 2013 at 5:38 PM Steve Crocker &lt;<a href=
=3D"mailto:Steve@shinkuro.com" target=3D"_blank">Steve@shinkuro.com</a>&gt;=
 wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px =
0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">I was ve=
ry pleased to see the work on the Timezone Service Protocol.=C2=A0 I have n=
o argument about the format of the data elements or actions, but the timing=
 model is incomplete.=C2=A0 One of the motivations is make sure accurate ti=
mezone data is distributed in a timely fashion.=C2=A0 In order to make good=
 on this, we need to say more about the timing.=C2=A0 As noted in the anecd=
ote cited below, time zone changes are sometimes abrupt.=C2=A0 How much not=
ice is required in order to make sure time zone changes are guaranteed to b=
e propagated to all devices?=C2=A0 And on the other end of the system, how =
frequently do devices need to poll or otherwise be notified of changes?<br>
<br>
Historically, IETF protocols have tended to be a bit vague about timing par=
ameters and it&#39;s been left to operational practice.=C2=A0 The results a=
re frequently messy.=C2=A0 We have a chance for this one to be much clearer=
..=C2=A0 The timezone database now maintained by IANA is a pretty solid sol=
ution for the source of reliable, authoritative information, but there&#39;=
s not been much written other than anecdotes about how often the data chang=
es and how much lead time is required to distribute the information.<br>
<br>
In the present draft, the only wording I could find is at the section 4.1.3=
:<br>
<br>
&gt; Clients SHOULD NOT poll for such changes too frequently, typically onc=
e a day ought to be sufficient.=C2=A0 See Section 8 on expected client and =
server behavior regarding high request rates.<br>
<br>
and the cautions in Section 8.<br>
<br>
I don&#39;t have an axe to grind regarding the design of the protocol, but =
I will note that if the timezone data were published via DNS, both the thro=
ttling problem and the model of propagation time would be dealt with automa=
tically.=C2=A0 In any case, even if there&#39;s no desire to distribute thi=
s data over DNS, I do believe we need to provide much stronger statements a=
bout the expected time to propagate changes and to be clearer about how the=
 design implements such statements.<br>
<br>
Steve<br>
<br>
<br>
<br>
<br>
On Oct 30, 2013, at 11:23 AM, Cyrus Daboo &lt;<a href=3D"mailto:cyrus@daboo=
..name" target=3D"_blank">cyrus@daboo.name</a>&gt; wrote:<br>
<br>
&gt; Hi <a href=3D"mailto:ned%2Bietf@mauve.mrochek.com" target=3D"_blank">n=
ed+ietf@mauve.mrochek.com</a>,<br>
&gt; <br>
&gt; --On October 30, 2013 at 7:52:55 AM -0700 <a href=3D"mailto:ned%2Bietf=
@mauve.mrochek.com" target=3D"_blank">ned+ietf@mauve.mrochek.com</a> wrote:=
<br>
&gt; <br>
&gt;&gt;&gt;&gt; Which argues for including the local time when the event w=
ill take<br>
&gt;&gt;&gt;&gt; place. If you want to mandate that the time also appear in=
 UTC, great,<br>
&gt;&gt;&gt;&gt; but it&#39;s quite important that the local time also be t=
here.<br>
&gt;&gt; <br>
&gt;&gt;&gt; And local time should be normative to deal with such unforesee=
n<br>
&gt;&gt;&gt; circumstances as a papal visit.=C2=A0 From the southamerica fi=
le in the TZ<br>
&gt;&gt;&gt; database:<br>
&gt;&gt; <br>
&gt;&gt;&gt; # From Daniel C. Sobral (1998-02-12):<br>
&gt;&gt;&gt; # In 1997, the DS began on October 6. The stated reason was th=
at<br>
&gt;&gt;&gt; # because international television networks ignored Brazil&#39=
;s policy on<br>
&gt;&gt;&gt; # DS, they bought the wrong times on satellite for coverage of=
 Pope&#39;s<br>
&gt;&gt;&gt; # visit. This year, the ending date of DS was postponed to Mar=
ch 1<br>
&gt;&gt;&gt; # to help dealing with the shortages of electric power.<br>
&gt;&gt; <br>
&gt;&gt;&gt; ;-)<br>
&gt;&gt; <br>
&gt;&gt; Good point. I agree.<br>
&gt; <br>
&gt; Timezones can (and do) change at very short notice in different parts =
of the world. Typically computer systems have timezone data cached as part =
of the OS, and only get updates when the OS is itself updated - often long =
after a timezone change has occurred or long after future events were booke=
d but are now out of sync for participants in different timezones. To addre=
ss that a number of folks in the calendaring and scheduling community have =
been working om a timezone service protocol - &lt;<a href=3D"https://datatr=
acker.ietf.org/doc/draft-douglass-timezone-service/" rel=3D"noreferrer" tar=
get=3D"_blank">https://datatracker.ietf.org/doc/draft-douglass-timezone-ser=
vice/</a>&gt; - our initial focus for that has been iCalendar (RFC5545) bas=
ed VTIMEZONE component delivery to calendar and scheduling clients and serv=
ers. However, we would like to also deliver OS-style timezone data to devic=
es to break out of the requirement for those to be updated only when the OS=
 itself updates. For unix-based OS&#39;s that means being able to deliver &=
quot;raw&quot; zoneinfo&quot; data over that protocol.<br>
&gt; <br>
&gt; Anyway, if you are interested in that work please comment over on the =
ietf-calsify list (cc&#39;d) - we (the authors of that draft) - intend to g=
et it moving to last call soon. There are already several implementations t=
hat have undergone testing at the Calendaring and Scheduling Consortium (Ca=
lConnect) interop events, so we are happy with it, but would appreciate mor=
e feedback.<br>
&gt; <br>
&gt; -- <br>
&gt; Cyrus Daboo<br>
&gt; <br>
<br>
_______________________________________________<br>
calsify mailing list<br>
<a href=3D"mailto:calsify@ietf.org" target=3D"_blank">calsify@ietf.org</a><=
br>
<a href=3D"https://www.ietf.org/mailman/listinfo/calsify" rel=3D"noreferrer=
" target=3D"_blank">https://www.ietf.org/mailman/listinfo/calsify</a><br>
</blockquote></div></div>
_______________________________________________<br>
calsify mailing list<br>
<a href=3D"mailto:calsify@ietf.org" target=3D"_blank">calsify@ietf.org</a><=
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Date: Wed, 13 Mar 2019 00:45:33 -0400
From: "Bron Gondwana" <brong@fastmailteam.com>
To: calsify@ietf.org
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Subject: Re: [calsify] Timezone Service Protocol not quite complete
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Thanks Daniel - and thanks Steve for bringing this up. It was pinned for me to reply to, but I've been moving house over the last week, so not dealing with things quickly!

Shooting from the hip (I actually spent a while thinking about this while I was unpacking boxes) I would put a minimum bound of "once per day" and a maximum bound of "once per month" on how often devices should check for changes, with a sensible idea being something like: "once per week, on Friday".

Anyways, I certainly support adding this to the charter and talking about it in a more structured way rather than me guessing stuff.

Bron.

On Wed, Mar 13, 2019, at 11:17, Daniel Migault wrote:
> Thanks Steve for raising this point. Anyone opposed to add this item to the charter ? At least that would be good to provide guidance and quantification of the propagation so "best effort" becomes more specific. Please provide your thoughts on how we could probably address this on the mailing list.
> 
> Yours, 
> Daniel
> 
> On Fri, Mar 8, 2019 at 2:44 PM Steve Crocker <steve@shinkuro.com> wrote:
>> Bron, et al,
>> 
>> In response to your note about the charter and direction of the working group, here's a note I sent more than five(!) years ago that garnered no response at all. Nonetheless, I think including some sort of expected propagation time in the specification is -- or least ought to be -- within scope.
>> 
>> Steve Crocker
>> 
>> On Tue, Nov 5, 2013 at 5:38 PM Steve Crocker <Steve@shinkuro.com> wrote:
>>> I was very pleased to see the work on the Timezone Service Protocol. I have no argument about the format of the data elements or actions, but the timing model is incomplete. One of the motivations is make sure accurate timezone data is distributed in a timely fashion. In order to make good on this, we need to say more about the timing. As noted in the anecdote cited below, time zone changes are sometimes abrupt. How much notice is required in order to make sure time zone changes are guaranteed to be propagated to all devices? And on the other end of the system, how frequently do devices need to poll or otherwise be notified of changes?
>>> 
>>>  Historically, IETF protocols have tended to be a bit vague about timing parameters and it's been left to operational practice. The results are frequently messy. We have a chance for this one to be much clearer... The timezone database now maintained by IANA is a pretty solid solution for the source of reliable, authoritative information, but there's not been much written other than anecdotes about how often the data changes and how much lead time is required to distribute the information.
>>> 
>>>  In the present draft, the only wording I could find is at the section 4.1.3:
>>> 
>>>  > Clients SHOULD NOT poll for such changes too frequently, typically once a day ought to be sufficient. See Section 8 on expected client and server behavior regarding high request rates.
>>> 
>>>  and the cautions in Section 8.
>>> 
>>>  I don't have an axe to grind regarding the design of the protocol, but I will note that if the timezone data were published via DNS, both the throttling problem and the model of propagation time would be dealt with automatically. In any case, even if there's no desire to distribute this data over DNS, I do believe we need to provide much stronger statements about the expected time to propagate changes and to be clearer about how the design implements such statements.
>>> 
>>>  Steve
>>> 
>>> 
>>> 
>>> 
>>>  On Oct 30, 2013, at 11:23 AM, Cyrus Daboo <cyrus@daboo.name <mailto:cyrus@daboo...name>> wrote:
>>> 
>>>  > Hi ned+ietf@mauve.mrochek.com <mailto:ned%2Bietf@mauve.mrochek.com>,
>>>  > 
>>>  > --On October 30, 2013 at 7:52:55 AM -0700 ned+ietf@mauve.mrochek.com <mailto:ned%2Bietf@mauve.mrochek.com> wrote:
>>>  > 
>>>  >>>> Which argues for including the local time when the event will take
>>>  >>>> place. If you want to mandate that the time also appear in UTC, great,
>>>  >>>> but it's quite important that the local time also be there.
>>>  >> 
>>>  >>> And local time should be normative to deal with such unforeseen
>>>  >>> circumstances as a papal visit. From the southamerica file in the TZ
>>>  >>> database:
>>>  >> 
>>>  >>> # From Daniel C. Sobral (1998-02-12):
>>>  >>> # In 1997, the DS began on October 6. The stated reason was that
>>>  >>> # because international television networks ignored Brazil's policy on
>>>  >>> # DS, they bought the wrong times on satellite for coverage of Pope's
>>>  >>> # visit. This year, the ending date of DS was postponed to March 1
>>>  >>> # to help dealing with the shortages of electric power.
>>>  >> 
>>>  >>> ;-)
>>>  >> 
>>>  >> Good point. I agree.
>>>  > 
>>>  > Timezones can (and do) change at very short notice in different parts of the world. Typically computer systems have timezone data cached as part of the OS, and only get updates when the OS is itself updated - often long after a timezone change has occurred or long after future events were booked but are now out of sync for participants in different timezones. To address that a number of folks in the calendaring and scheduling community have been working om a timezone service protocol - <https://datatracker.ietf.org/doc/draft-douglass-timezone-service/> - our initial focus for that has been iCalendar (RFC5545) based VTIMEZONE component delivery to calendar and scheduling clients and servers. However, we would like to also deliver OS-style timezone data to devices to break out of the requirement for those to be updated only when the OS itself updates. For unix-based OS's that means being able to deliver "raw" zoneinfo" data over that protocol.
>>>  > 
>>>  > Anyway, if you are interested in that work please comment over on the ietf-calsify list (cc'd) - we (the authors of that draft) - intend to get it moving to last call soon. There are already several implementations that have undergone testing at the Calendaring and Scheduling Consortium (CalConnect) interop events, so we are happy with it, but would appreciate more feedback.
>>>  > 
>>>  > -- 
>>>  > Cyrus Daboo
>>>  > 
>>> 
>>>  _______________________________________________
>>>  calsify mailing list
>>> calsify@ietf.org
>>> https://www.ietf.org/mailman/listinfo/calsify
>> _______________________________________________
>>  calsify mailing list
>> calsify@ietf.org
>> https://www.ietf.org/mailman/listinfo/calsify
> _______________________________________________
> calsify mailing list
> calsify@ietf.org
> https://www.ietf.org/mailman/listinfo/calsify
> 

--
 Bron Gondwana, CEO, FastMail Pty Ltd
 brong@fastmailteam.com


--758110d7e8d04cb7a83d4878f1b1a673
Content-Type: text/html
Content-Transfer-Encoding: quoted-printable

<!DOCTYPE html><html><head><title></title><style type=3D"text/css">p.Mso=
Normal,p.MsoNoSpacing{margin:0}</style></head><body><div style=3D"font-f=
amily:Arial;">Thanks Daniel - and thanks Steve for bringing this up.&nbs=
p; It was pinned for me to reply to, but I've been moving house over the=
 last week, so not dealing with things quickly!<br></div><div style=3D"f=
ont-family:Arial;"><br></div><div style=3D"font-family:Arial;">Shooting =
from the hip (I actually spent a while thinking about this while I was u=
npacking boxes) I would put a minimum bound of "once per day" and a maxi=
mum bound of "once per month" on how often devices should check for chan=
ges, with a sensible idea being something like: "once per week, on Frida=
y".<br></div><div style=3D"font-family:Arial;"><br></div><div style=3D"f=
ont-family:Arial;">Anyways, I certainly support adding this to the chart=
er and talking about it in a more structured way rather than me guessing=
 stuff.<br></div><div style=3D"font-family:Arial;"><br></div><div style=3D=
"font-family:Arial;">Bron.<br></div><div style=3D"font-family:Arial;"><b=
r></div><div style=3D"font-family:Arial;">On Wed, Mar 13, 2019, at 11:17=
, Daniel Migault wrote:<br></div><blockquote type=3D"cite" id=3D"fastmai=
l-quoted"><div dir=3D"ltr"><div style=3D"font-family:Arial;">Thanks Stev=
e for raising this point. Anyone opposed to add this item to the charter=
 ? At least that would be good to provide guidance and quantification of=
 the propagation so "best effort" becomes more specific. Please provide =
your thoughts on how we could probably address this on the mailing list.=
<br></div><div><div><div style=3D"font-family:Arial;"><br></div><div>You=
rs,&nbsp;<br></div><div>Daniel<br></div></div></div></div><div style=3D"=
font-family:Arial;"><br></div><div class=3D"fastmail-quoted-gmail_quote"=
><div class=3D"fastmail-quoted-gmail_attr" dir=3D"ltr">On Fri, Mar 8, 20=
19 at 2:44 PM Steve Crocker &lt;<a href=3D"mailto:steve@shinkuro.com">st=
eve@shinkuro.com</a>&gt; wrote:<br></div><blockquote style=3D"margin-top=
:0px;margin-right:0px;margin-bottom:0px;margin-left:0.8ex;border-left-co=
lor:rgb(204, 204, 204);border-left-style:solid;border-left-width:1px;pad=
ding-left:1ex;" class=3D"fastmail-quoted-gmail_quote"><div dir=3D"ltr"><=
div dir=3D"ltr"><div style=3D"font-family:Arial;">Bron, et al,<br></div>=
<div><br></div><div>In response to your note about the charter and direc=
tion of the working group, here's a note I sent more than five(!) years =
ago that garnered no response at all.&nbsp; Nonetheless, I think includi=
ng some sort of expected propagation time in the specification is -- or =
least ought to be -- within scope.<br></div><div><br></div><div>Steve Cr=
ocker<br></div></div><div style=3D"font-family:Arial;"><br></div><div cl=
ass=3D"fastmail-quoted-gmail_quote"><div class=3D"fastmail-quoted-gmail_=
attr" dir=3D"ltr">On Tue, Nov 5, 2013 at 5:38 PM Steve Crocker &lt;<a hr=
ef=3D"mailto:Steve@shinkuro.com">Steve@shinkuro.com</a>&gt; wrote:<br></=
div><blockquote style=3D"margin-top:0px;margin-right:0px;margin-bottom:0=
px;margin-left:0.8ex;border-left-color:rgb(204, 204, 204);border-left-st=
yle:solid;border-left-width:1px;padding-left:1ex;" class=3D"fastmail-quo=
ted-gmail_quote"><div style=3D"font-family:Arial;">I was very pleased to=
 see the work on the Timezone Service Protocol.&nbsp; I have no argument=
 about the format of the data elements or actions, but the timing model =
is incomplete.&nbsp; One of the motivations is make sure accurate timezo=
ne data is distributed in a timely fashion.&nbsp; In order to make good =
on this, we need to say more about the timing.&nbsp; As noted in the ane=
cdote cited below, time zone changes are sometimes abrupt.&nbsp; How muc=
h notice is required in order to make sure time zone changes are guarant=
eed to be propagated to all devices?&nbsp; And on the other end of the s=
ystem, how frequently do devices need to poll or otherwise be notified o=
f changes?<br></div><div style=3D"font-family:Arial;"> <br></div><div st=
yle=3D"font-family:Arial;"> Historically, IETF protocols have tended to =
be a bit vague about timing parameters and it's been left to operational=
 practice.&nbsp; The results are frequently messy.&nbsp; We have a chanc=
e for this one to be much clearer...&nbsp; The timezone database now mai=
ntained by IANA is a pretty solid solution for the source of reliable, a=
uthoritative information, but there's not been much written other than a=
necdotes about how often the data changes and how much lead time is requ=
ired to distribute the information.<br></div><div style=3D"font-family:A=
rial;"> <br></div><div style=3D"font-family:Arial;"> In the present draf=
t, the only wording I could find is at the section 4.1.3:<br></div><div =
style=3D"font-family:Arial;"> <br></div><div style=3D"font-family:Arial;=
"> &gt; Clients SHOULD NOT poll for such changes too frequently, typical=
ly once a day ought to be sufficient.&nbsp; See Section 8 on expected cl=
ient and server behavior regarding high request rates.<br></div><div sty=
le=3D"font-family:Arial;"> <br></div><div style=3D"font-family:Arial;"> =
and the cautions in Section 8.<br></div><div style=3D"font-family:Arial;=
"> <br></div><div style=3D"font-family:Arial;"> I don't have an axe to g=
rind regarding the design of the protocol, but I will note that if the t=
imezone data were published via DNS, both the throttling problem and the=
 model of propagation time would be dealt with automatically.&nbsp; In a=
ny case, even if there's no desire to distribute this data over DNS, I d=
o believe we need to provide much stronger statements about the expected=
 time to propagate changes and to be clearer about how the design implem=
ents such statements.<br></div><div style=3D"font-family:Arial;"> <br></=
div><div style=3D"font-family:Arial;"> Steve<br></div><div style=3D"font=
-family:Arial;"> <br></div><div style=3D"font-family:Arial;"> <br></div>=
<div style=3D"font-family:Arial;"> <br></div><div style=3D"font-family:A=
rial;"> <br></div><div style=3D"font-family:Arial;"> On Oct 30, 2013, at=
 11:23 AM, Cyrus Daboo &lt;<a href=3D"mailto:cyrus@daboo...name">cyrus@d=
aboo.name</a>&gt; wrote:<br></div><div style=3D"font-family:Arial;"> <br=
></div><div style=3D"font-family:Arial;"> &gt; Hi <a href=3D"mailto:ned%=
2Bietf@mauve.mrochek.com">ned+ietf@mauve.mrochek.com</a>,<br></div><div =
style=3D"font-family:Arial;"> &gt; <br></div><div style=3D"font-family:A=
rial;"> &gt; --On October 30, 2013 at 7:52:55 AM -0700 <a href=3D"mailto=
:ned%2Bietf@mauve.mrochek.com">ned+ietf@mauve.mrochek.com</a> wrote:<br>=
</div><div style=3D"font-family:Arial;"> &gt; <br></div><div style=3D"fo=
nt-family:Arial;"> &gt;&gt;&gt;&gt; Which argues for including the local=
 time when the event will take<br></div><div style=3D"font-family:Arial;=
"> &gt;&gt;&gt;&gt; place. If you want to mandate that the time also app=
ear in UTC, great,<br></div><div style=3D"font-family:Arial;"> &gt;&gt;&=
gt;&gt; but it's quite important that the local time also be there.<br><=
/div><div style=3D"font-family:Arial;"> &gt;&gt; <br></div><div style=3D=
"font-family:Arial;"> &gt;&gt;&gt; And local time should be normative to=
 deal with such unforeseen<br></div><div style=3D"font-family:Arial;"> &=
gt;&gt;&gt; circumstances as a papal visit.&nbsp; From the southamerica =
file in the TZ<br></div><div style=3D"font-family:Arial;"> &gt;&gt;&gt; =
database:<br></div><div style=3D"font-family:Arial;"> &gt;&gt; <br></div=
><div style=3D"font-family:Arial;"> &gt;&gt;&gt; # From Daniel C. Sobral=
 (1998-02-12):<br></div><div style=3D"font-family:Arial;"> &gt;&gt;&gt; =
# In 1997, the DS began on October 6. The stated reason was that<br></di=
v><div style=3D"font-family:Arial;"> &gt;&gt;&gt; # because internationa=
l television networks ignored Brazil's policy on<br></div><div style=3D"=
font-family:Arial;"> &gt;&gt;&gt; # DS, they bought the wrong times on s=
atellite for coverage of Pope's<br></div><div style=3D"font-family:Arial=
;"> &gt;&gt;&gt; # visit. This year, the ending date of DS was postponed=
 to March 1<br></div><div style=3D"font-family:Arial;"> &gt;&gt;&gt; # t=
o help dealing with the shortages of electric power.<br></div><div style=
=3D"font-family:Arial;"> &gt;&gt; <br></div><div style=3D"font-family:Ar=
ial;"> &gt;&gt;&gt; ;-)<br></div><div style=3D"font-family:Arial;"> &gt;=
&gt; <br></div><div style=3D"font-family:Arial;"> &gt;&gt; Good point. I=
 agree.<br></div><div style=3D"font-family:Arial;"> &gt; <br></div><div =
style=3D"font-family:Arial;"> &gt; Timezones can (and do) change at very=
 short notice in different parts of the world. Typically computer system=
s have timezone data cached as part of the OS, and only get updates when=
 the OS is itself updated - often long after a timezone change has occur=
red or long after future events were booked but are now out of sync for =
participants in different timezones. To address that a number of folks i=
n the calendaring and scheduling community have been working om a timezo=
ne service protocol - &lt;<a rel=3D"noreferrer" href=3D"https://datatrac=
ker.ietf.org/doc/draft-douglass-timezone-service/">https://datatracker.i=
etf.org/doc/draft-douglass-timezone-service/</a>&gt; - our initial focus=
 for that has been iCalendar (RFC5545) based VTIMEZONE component deliver=
y to calendar and scheduling clients and servers. However, we would like=
 to also deliver OS-style timezone data to devices to break out of the r=
equirement for those to be updated only when the OS itself updates. For =
unix-based OS's that means being able to deliver "raw" zoneinfo" data ov=
er that protocol.<br></div><div style=3D"font-family:Arial;"> &gt; <br><=
/div><div style=3D"font-family:Arial;"> &gt; Anyway, if you are interest=
ed in that work please comment over on the ietf-calsify list (cc'd) - we=
 (the authors of that draft) - intend to get it moving to last call soon=
. There are already several implementations that have undergone testing =
at the Calendaring and Scheduling Consortium (CalConnect) interop events=
, so we are happy with it, but would appreciate more feedback.<br></div>=
<div style=3D"font-family:Arial;"> &gt; <br></div><div style=3D"font-fam=
ily:Arial;"> &gt; -- <br></div><div style=3D"font-family:Arial;"> &gt; C=
yrus Daboo<br></div><div style=3D"font-family:Arial;"> &gt; <br></div><d=
iv style=3D"font-family:Arial;"> <br></div><div style=3D"font-family:Ari=
al;"> _______________________________________________<br></div><div styl=
e=3D"font-family:Arial;"> calsify mailing list<br></div><div style=3D"fo=
nt-family:Arial;"> <a href=3D"mailto:calsify@ietf.org">calsify@ietf.org<=
/a><br></div><div style=3D"font-family:Arial;"> <a rel=3D"noreferrer" hr=
ef=3D"https://www.ietf.org/mailman/listinfo/calsify">https://www.ietf.or=
g/mailman/listinfo/calsify</a><br></div></blockquote></div></div><div st=
yle=3D"font-family:Arial;">_____________________________________________=
__<br></div><div style=3D"font-family:Arial;"> calsify mailing list<br><=
/div><div style=3D"font-family:Arial;"> <a href=3D"mailto:calsify@ietf.o=
rg">calsify@ietf.org</a><br></div><div style=3D"font-family:Arial;"> <a =
rel=3D"noreferrer" href=3D"https://www.ietf.org/mailman/listinfo/calsify=
">https://www.ietf.org/mailman/listinfo/calsify</a><br></div></blockquot=
e></div><div>_______________________________________________<br></div><d=
iv>calsify mailing list<br></div><div>calsify@ietf.org<br></div><div>htt=
ps://www.ietf.org/mailman/listinfo/calsify<br></div><div><br></div></blo=
ckquote><div style=3D"font-family:Arial;"><br></div><div id=3D"sig566294=
17"><div class=3D"signature">--<br></div><div class=3D"signature">&nbsp;=
 Bron Gondwana, CEO, FastMail Pty Ltd<br></div><div class=3D"signature">=
&nbsp; brong@fastmailteam.com<br></div><div class=3D"signature"><br></di=
v></div><div style=3D"font-family:Arial;"><br></div></body></html>
--758110d7e8d04cb7a83d4878f1b1a673--


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Date: Sat, 23 Mar 2019 06:29:47 -0400
From: "Bron Gondwana" <brong@fastmailteam.com>
To: =?UTF-8?Q?=D0=94=D0=B8=D0=BB=D1=8F=D0=BD_=D0=9F=D0=B0=D0=BB=D0=B0=D1=83?= =?UTF-8?Q?=D0=B7=D0=BE=D0=B2?= <dilyan.palauzov@aegee.org>, calsify <calsify@ietf.org>
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Subject: Re: [calsify] draft-gondwana-caldav-scheduling-controls
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--c217ab4885134138950d534c3765efd7
Content-Type: text/plain;charset=utf-8
Content-Transfer-Encoding: quoted-printable

On Sat, Mar 9, 2019, at 06:00, =D0=94=D0=B8=D0=BB=D1=8F=D0=BD =D0=9F=D0=B0=
=D0=BB=D0=B0=D1=83=D0=B7=D0=BE=D0=B2 wrote:
> Hello Bron,
>=20
> irrespective of the WG-addoptation, CALDAV:calendar-user-address-set (=
https://tools.ietf.org/html/rfc6638#section-2.4.1)
> defines per principal all the aliases a user has, so the server does n=
ot have to guess anything.
>=20
> When the Schedule-User-Address header is skipped, your draft says, tha=
t the CALDAV:schedule-user-address property on a
> calendar or user/principal shall be used. The draft references only RF=
C6638 =E2=80=9CScheduling Extensions to CalDAV=E2=80=9D and the
> latter does not say anything about CALDAV:schedule-user-address. Where=
 is CALDAV:schedule-user-address defined?
>=20
> Are CALDAV:schedule-user-address and CALDAV:calendar-user-address-set =
supposed to mean the same?

Yes - I expect that was an early mistake that I just didn't notice. Oops=
. I'll fix that up in the next one.

> In any case, it would be good to be able to specify several addresses =
in the Schedule-User-Address header: an invitation
> having Organizer and Attendee, where the same person is both the organ=
izer and the attendee, but uses different
> addresses for both, is supposed not to trigger any scheduling to the s=
ame person. This assumes that the system can
> match the addresses as Attendee and Organizer belonging to the same pe=
rson and both addresses could arrive as headers.

The server will always have you acting as a particular user when you're =
updating the record - but yeah, to avoid scheduling to multiple addresse=
s makes sense. This will also be something interesting to discuss in JMA=
P calendars.

Bron.

--
 Bron Gondwana, CEO, FastMail Pty Ltd
 brong@fastmailteam.com


--c217ab4885134138950d534c3765efd7
Content-Type: text/html;charset=utf-8
Content-Transfer-Encoding: quoted-printable

<!DOCTYPE html><html><head><title></title><style type=3D"text/css">p.Mso=
Normal,p.MsoNoSpacing{margin:0}
p.MsoNormal,p.MsoNoSpacing{margin:0}</style></head><body><div style=3D"f=
ont-family:Arial;">On Sat, Mar 9, 2019, at 06:00, =D0=94=D0=B8=D0=BB=D1=8F=
=D0=BD =D0=9F=D0=B0=D0=BB=D0=B0=D1=83=D0=B7=D0=BE=D0=B2 wrote:<br></div>=
<blockquote id=3D"fastmail-quoted" type=3D"cite"><div style=3D"font-fami=
ly:Arial;">Hello Bron,<br></div><div style=3D"font-family:Arial;"><br></=
div><div style=3D"font-family:Arial;">irrespective of the WG-addoptation=
, CALDAV:calendar-user-address-set (https://tools.ietf.org/html/rfc6638#=
section-2.4.1)<br></div><div style=3D"font-family:Arial;">defines per pr=
incipal all the aliases a user has, so the server does not have to guess=
 anything.<br></div><div style=3D"font-family:Arial;"><br></div><div sty=
le=3D"font-family:Arial;">When the Schedule-User-Address header is skipp=
ed, your draft says, that the CALDAV:schedule-user-address property on a=
<br></div><div style=3D"font-family:Arial;">calendar or user/principal s=
hall be used.&nbsp; The draft references only RFC6638 =E2=80=9CSchedulin=
g Extensions to CalDAV=E2=80=9D and the<br></div><div style=3D"font-fami=
ly:Arial;">latter does not say anything about CALDAV:schedule-user-addre=
ss.&nbsp; Where is CALDAV:schedule-user-address defined?<br></div><div s=
tyle=3D"font-family:Arial;"><br></div><div style=3D"font-family:Arial;">=
Are CALDAV:schedule-user-address and CALDAV:calendar-user-address-set su=
pposed to mean the same?<br></div></blockquote><div style=3D"font-family=
:Arial;"><br></div><div style=3D"font-family:Arial;">Yes - I expect that=
 was an early mistake that I just didn't notice.&nbsp; Oops.&nbsp; I'll =
fix that up in the next one.<br></div><div style=3D"font-family:Arial;">=
<br></div><blockquote id=3D"fastmail-quoted" type=3D"cite"><div style=3D=
"font-family:Arial;">In any case, it would be good to be able to specify=
 several addresses in the Schedule-User-Address header: an invitation<br=
></div><div style=3D"font-family:Arial;">having Organizer and Attendee, =
where the same person is both the organizer and the attendee, but uses d=
ifferent<br></div><div style=3D"font-family:Arial;">addresses for both, =
is supposed not to trigger any scheduling to the same person.&nbsp; This=
 assumes that the system can<br></div><div style=3D"font-family:Arial;">=
match the addresses as Attendee and Organizer belonging to the same pers=
on and both addresses could arrive as headers.<br></div></blockquote><di=
v style=3D"font-family:Arial;"><br></div><div style=3D"font-family:Arial=
;">The server will always have you acting as a particular user when you'=
re updating the record - but yeah, to avoid scheduling to multiple addre=
sses makes sense.&nbsp; This will also be something interesting to discu=
ss in JMAP calendars.<br></div><div style=3D"font-family:Arial;"><br></d=
iv><div style=3D"font-family:Arial;">Bron.<br></div><div style=3D"font-f=
amily:Arial;"><br></div><div id=3D"sig56629417"><div class=3D"signature"=
>--<br></div><div class=3D"signature">&nbsp; Bron Gondwana, CEO, FastMai=
l Pty Ltd<br></div><div class=3D"signature">&nbsp; brong@fastmailteam.co=
m<br></div><div class=3D"signature"><br></div></div><div style=3D"font-f=
amily:Arial;"><br></div></body></html>
--c217ab4885134138950d534c3765efd7--


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Date: Sat, 23 Mar 2019 10:32:06 -0400
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To: calsify@ietf.org
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Subject: [calsify] Prague session agenda uploaded
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--9062f5bc741f443484f9822b79c964ba
Content-Type: text/plain

Hi all,

I've just uploaded an agenda for our session on Monday here:

https://datatracker.ietf.org/meeting/104/materials/agenda-104-calext-00

Here's some useful reading material before the meeting:

In publication queue drafts:

https://datatracker.ietf.org/doc/draft-ietf-calext-caldav-attachments/?include_text=1
https://datatracker.ietf.org/doc/draft-ietf-calext-eventpub-extensions/?include_text=1

Active drafts:

https://datatracker.ietf.org/doc/draft-ietf-calext-jscalendar/?include_text=1

Proposed new documents:

https://datatracker.ietf.org/doc/draft-gondwana-caldav-scheduling-controls/?include_text=1
https://datatracker.ietf.org/doc/draft-daboo-valarm-extensions/?include_text=1
https://datatracker.ietf.org/doc/draft-stepanek-jscontact/?include_text=1

CalConnect items:

https://github.com/CalConnect/PUBLIC_DRAFTS/tree/master/subscription-upgrade 
( or https://www.ietf.org/archive/id/draft-douglass-subscription-upgrade-03.txt )
https://github.com/CalConnect/PUBLIC_DRAFTS/tree/master/vpoll
( or https://www.ietf.org/archive/id/draft-york-vpoll-04.txt )

https://www.ietf.org/archive/id/draft-pot-caldav-sharing-01.txt (unsure if source code still exists!)

Charter draft:

https://datatracker.ietf.org/meeting/104/materials/slides-104-calext-calext-charter-00


Cheers,

Bron.

--
 Bron Gondwana, CEO, FastMail Pty Ltd
 brong@fastmailteam.com


--9062f5bc741f443484f9822b79c964ba
Content-Type: text/html
Content-Transfer-Encoding: quoted-printable

<!DOCTYPE html><html><head><title></title><style type=3D"text/css">p.Mso=
Normal,p.MsoNoSpacing{margin:0}
p.MsoNormal,p.MsoNoSpacing{margin:0}</style></head><body><div style=3D"f=
ont-family:Arial;">Hi all,<br></div><div style=3D"font-family:Arial;"><b=
r></div><div style=3D"font-family:Arial;">I've just uploaded an agenda f=
or our session on Monday here:<br></div><div style=3D"font-family:Arial;=
"><br></div><div style=3D"font-family:Arial;"><a href=3D"https://datatra=
cker.ietf.org/meeting/104/materials/agenda-104-calext-00">https://datatr=
acker.ietf.org/meeting/104/materials/agenda-104-calext-00</a><br></div><=
div style=3D"font-family:Arial;"><br></div><div style=3D"font-family:Ari=
al;">Here's some useful reading material before the meeting:<br></div><d=
iv style=3D"font-family:Arial;"><br></div><div style=3D"font-family:Aria=
l;">In publication queue drafts:<br></div><div style=3D"font-family:Aria=
l;"><br></div><div style=3D"font-family:Arial;"><a href=3D"https://datat=
racker.ietf.org/doc/draft-ietf-calext-caldav-attachments/?include_text=3D=
1">https://datatracker.ietf.org/doc/draft-ietf-calext-caldav-attachments=
/?include_text=3D1</a><br></div><div style=3D"font-family:Arial;"><a hre=
f=3D"https://datatracker.ietf.org/doc/draft-ietf-calext-eventpub-extensi=
ons/?include_text=3D1">https://datatracker.ietf.org/doc/draft-ietf-calex=
t-eventpub-extensions/?include_text=3D1</a><br></div><div style=3D"font-=
family:Arial;"><br></div><div style=3D"font-family:Arial;">Active drafts=
:<br></div><div style=3D"font-family:Arial;"><br></div><div style=3D"fon=
t-family:Arial;"><a href=3D"https://datatracker.ietf.org/doc/draft-ietf-=
calext-jscalendar/?include_text=3D1">https://datatracker.ietf.org/doc/dr=
aft-ietf-calext-jscalendar/?include_text=3D1</a><br></div><div style=3D"=
font-family:Arial;"><br></div><div style=3D"font-family:Arial;">Proposed=
 new documents:<br></div><div style=3D"font-family:Arial;"><br></div><di=
v style=3D"font-family:Arial;"><a href=3D"https://datatracker.ietf.org/d=
oc/draft-gondwana-caldav-scheduling-controls/?include_text=3D1">https://=
datatracker.ietf.org/doc/draft-gondwana-caldav-scheduling-controls/?incl=
ude_text=3D1</a><br></div><div style=3D"font-family:Arial;"><a href=3D"h=
ttps://datatracker.ietf.org/doc/draft-daboo-valarm-extensions/?include_t=
ext=3D1">https://datatracker.ietf.org/doc/draft-daboo-valarm-extensions/=
?include_text=3D1</a><br></div><div style=3D"font-family:Arial;"><a href=
=3D"https://datatracker.ietf.org/doc/draft-stepanek-jscontact/?include_t=
ext=3D1">https://datatracker.ietf.org/doc/draft-stepanek-jscontact/?incl=
ude_text=3D1</a><br></div><div style=3D"font-family:Arial;"><br></div><d=
iv style=3D"font-family:Arial;">CalConnect items:<br></div><div style=3D=
"font-family:Arial;"><br></div><div style=3D"font-family:Arial;"><a href=
=3D"https://github.com/CalConnect/PUBLIC_DRAFTS/tree/master/subscription=
-upgrade">https://github.com/CalConnect/PUBLIC_DRAFTS/tree/master/subscr=
iption-upgrade</a> <br></div><div style=3D"font-family:Arial;">( or <a h=
ref=3D"https://www.ietf.org/archive/id/draft-douglass-subscription-upgra=
de-03.txt">https://www.ietf.org/archive/id/draft-douglass-subscription-u=
pgrade-03.txt</a> )<br></div><div style=3D"font-family:Arial;"><a href=3D=
"https://github.com/CalConnect/PUBLIC_DRAFTS/tree/master/vpoll">https://=
github.com/CalConnect/PUBLIC_DRAFTS/tree/master/vpoll</a><br></div><div =
style=3D"font-family:Arial;">( or <a href=3D"https://www.ietf.org/archiv=
e/id/draft-york-vpoll-04.txt">https://www.ietf.org/archive/id/draft-york=
-vpoll-04.txt</a> )<br></div><div style=3D"font-family:Arial;"><br></div=
><div style=3D"font-family:Arial;"><a href=3D"https://www.ietf.org/archi=
ve/id/draft-pot-caldav-sharing-01.txt">https://www.ietf.org/archive/id/d=
raft-pot-caldav-sharing-01.txt</a> (unsure if source code still exists!)=
<br></div><div style=3D"font-family:Arial;"><br></div><div style=3D"font=
-family:Arial;"><div style=3D"font-family:Arial;">Charter draft:<br></di=
v><div style=3D"font-family:Arial;"><div style=3D"font-family:Arial;"><b=
r></div></div><div style=3D"font-family:Arial;"><a href=3D"https://datat=
racker.ietf.org/meeting/104/materials/slides-104-calext-calext-charter-0=
0">https://datatracker.ietf.org/meeting/104/materials/slides-104-calext-=
calext-charter-00</a><br></div><div style=3D"font-family:Arial;"><div st=
yle=3D"font-family:Arial;"><br></div><div style=3D"font-family:Arial;"><=
br></div><div style=3D"font-family:Arial;">Cheers,<br></div><div style=3D=
"font-family:Arial;"><br>Bron.<br></div></div></div><div style=3D"font-f=
amily:Arial;"><br></div><div id=3D"sig56629417"><div class=3D"signature"=
>--<br></div><div class=3D"signature">&nbsp; Bron Gondwana, CEO, FastMai=
l Pty Ltd<br></div><div class=3D"signature">&nbsp; brong@fastmailteam.co=
m<br></div><div class=3D"signature"><br></div></div><div style=3D"font-f=
amily:Arial;"><br></div></body></html>
--9062f5bc741f443484f9822b79c964ba--


From nobody Mon Mar 25 01:17:28 2019
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In-Reply-To: <2805845a-0613-4f01-96fe-25baca76d670@www.fastmail.com>
From: Daniel Migault <daniel.migault@ericsson.com>
Date: Mon, 25 Mar 2019 04:17:05 -0400
Message-ID: <CADZyTkmpTCGN8Bb_pN+aEQb=vAk+AoJmet4SLuh6exZ1pFnCTQ@mail.gmail.com>
To: Bron Gondwana <brong@fastmailteam.com>
Cc: IETF-Calsify <calsify@ietf.org>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/calsify/w5W1Vpn5v0uOJ5kSiH7cSYZDsBI>
Subject: Re: [calsify] Prague session agenda uploaded
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--00000000000032c5970584e6d59e
Content-Type: text/plain; charset="UTF-8"

We are looking for minute takers and jabber scribes. Please raise your hand!
Yours,
Bron and Daniel

On Sat, Mar 23, 2019 at 10:32 AM Bron Gondwana <brong@fastmailteam.com>
wrote:

> Hi all,
>
> I've just uploaded an agenda for our session on Monday here:
>
> https://datatracker.ietf.org/meeting/104/materials/agenda-104-calext-00
>
> Here's some useful reading material before the meeting:
>
> In publication queue drafts:
>
>
> https://datatracker.ietf.org/doc/draft-ietf-calext-caldav-attachments/?include_text=1
>
> https://datatracker.ietf.org/doc/draft-ietf-calext-eventpub-extensions/?include_text=1
>
> Active drafts:
>
>
> https://datatracker.ietf.org/doc/draft-ietf-calext-jscalendar/?include_text=1
>
> Proposed new documents:
>
>
> https://datatracker.ietf.org/doc/draft-gondwana-caldav-scheduling-controls/?include_text=1
>
> https://datatracker.ietf.org/doc/draft-daboo-valarm-extensions/?include_text=1
> https://datatracker.ietf.org/doc/draft-stepanek-jscontact/?include_text=1
>
> CalConnect items:
>
>
> https://github.com/CalConnect/PUBLIC_DRAFTS/tree/master/subscription-upgrade
> ( or
> https://www.ietf.org/archive/id/draft-douglass-subscription-upgrade-03.txt
> )
> https://github.com/CalConnect/PUBLIC_DRAFTS/tree/master/vpoll
> ( or https://www.ietf.org/archive/id/draft-york-vpoll-04.txt )
>
> https://www.ietf.org/archive/id/draft-pot-caldav-sharing-01.txt (unsure
> if source code still exists!)
>
> Charter draft:
>
>
> https://datatracker.ietf.org/meeting/104/materials/slides-104-calext-calext-charter-00
>
>
> Cheers,
>
> Bron.
>
> --
>   Bron Gondwana, CEO, FastMail Pty Ltd
>   brong@fastmailteam.com
>
>
> _______________________________________________
> calsify mailing list
> calsify@ietf.org
> https://www.ietf.org/mailman/listinfo/calsify
>

--00000000000032c5970584e6d59e
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">We are looking for minute takers and jabber scribes. Pleas=
e raise your hand!<div>Yours,=C2=A0</div><div>Bron and Daniel</div></div><b=
r><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Sat, =
Mar 23, 2019 at 10:32 AM Bron Gondwana &lt;<a href=3D"mailto:brong@fastmail=
team.com">brong@fastmailteam.com</a>&gt; wrote:<br></div><blockquote class=
=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rg=
b(204,204,204);padding-left:1ex"><u></u><div><div style=3D"font-family:Aria=
l">Hi all,<br></div><div style=3D"font-family:Arial"><br></div><div style=
=3D"font-family:Arial">I&#39;ve just uploaded an agenda for our session on =
Monday here:<br></div><div style=3D"font-family:Arial"><br></div><div style=
=3D"font-family:Arial"><a href=3D"https://datatracker.ietf.org/meeting/104/=
materials/agenda-104-calext-00" target=3D"_blank">https://datatracker.ietf.=
org/meeting/104/materials/agenda-104-calext-00</a><br></div><div style=3D"f=
ont-family:Arial"><br></div><div style=3D"font-family:Arial">Here&#39;s som=
e useful reading material before the meeting:<br></div><div style=3D"font-f=
amily:Arial"><br></div><div style=3D"font-family:Arial">In publication queu=
e drafts:<br></div><div style=3D"font-family:Arial"><br></div><div style=3D=
"font-family:Arial"><a href=3D"https://datatracker.ietf.org/doc/draft-ietf-=
calext-caldav-attachments/?include_text=3D1" target=3D"_blank">https://data=
tracker.ietf.org/doc/draft-ietf-calext-caldav-attachments/?include_text=3D1=
</a><br></div><div style=3D"font-family:Arial"><a href=3D"https://datatrack=
er.ietf.org/doc/draft-ietf-calext-eventpub-extensions/?include_text=3D1" ta=
rget=3D"_blank">https://datatracker.ietf.org/doc/draft-ietf-calext-eventpub=
-extensions/?include_text=3D1</a><br></div><div style=3D"font-family:Arial"=
><br></div><div style=3D"font-family:Arial">Active drafts:<br></div><div st=
yle=3D"font-family:Arial"><br></div><div style=3D"font-family:Arial"><a hre=
f=3D"https://datatracker.ietf.org/doc/draft-ietf-calext-jscalendar/?include=
_text=3D1" target=3D"_blank">https://datatracker.ietf.org/doc/draft-ietf-ca=
lext-jscalendar/?include_text=3D1</a><br></div><div style=3D"font-family:Ar=
ial"><br></div><div style=3D"font-family:Arial">Proposed new documents:<br>=
</div><div style=3D"font-family:Arial"><br></div><div style=3D"font-family:=
Arial"><a href=3D"https://datatracker.ietf.org/doc/draft-gondwana-caldav-sc=
heduling-controls/?include_text=3D1" target=3D"_blank">https://datatracker.=
ietf.org/doc/draft-gondwana-caldav-scheduling-controls/?include_text=3D1</a=
><br></div><div style=3D"font-family:Arial"><a href=3D"https://datatracker.=
ietf.org/doc/draft-daboo-valarm-extensions/?include_text=3D1" target=3D"_bl=
ank">https://datatracker.ietf.org/doc/draft-daboo-valarm-extensions/?includ=
e_text=3D1</a><br></div><div style=3D"font-family:Arial"><a href=3D"https:/=
/datatracker.ietf.org/doc/draft-stepanek-jscontact/?include_text=3D1" targe=
t=3D"_blank">https://datatracker.ietf.org/doc/draft-stepanek-jscontact/?inc=
lude_text=3D1</a><br></div><div style=3D"font-family:Arial"><br></div><div =
style=3D"font-family:Arial">CalConnect items:<br></div><div style=3D"font-f=
amily:Arial"><br></div><div style=3D"font-family:Arial"><a href=3D"https://=
github.com/CalConnect/PUBLIC_DRAFTS/tree/master/subscription-upgrade" targe=
t=3D"_blank">https://github.com/CalConnect/PUBLIC_DRAFTS/tree/master/subscr=
iption-upgrade</a> <br></div><div style=3D"font-family:Arial">( or <a href=
=3D"https://www.ietf.org/archive/id/draft-douglass-subscription-upgrade-03.=
txt" target=3D"_blank">https://www.ietf.org/archive/id/draft-douglass-subsc=
ription-upgrade-03.txt</a> )<br></div><div style=3D"font-family:Arial"><a h=
ref=3D"https://github.com/CalConnect/PUBLIC_DRAFTS/tree/master/vpoll" targe=
t=3D"_blank">https://github.com/CalConnect/PUBLIC_DRAFTS/tree/master/vpoll<=
/a><br></div><div style=3D"font-family:Arial">( or <a href=3D"https://www.i=
etf.org/archive/id/draft-york-vpoll-04.txt" target=3D"_blank">https://www.i=
etf.org/archive/id/draft-york-vpoll-04.txt</a> )<br></div><div style=3D"fon=
t-family:Arial"><br></div><div style=3D"font-family:Arial"><a href=3D"https=
://www.ietf.org/archive/id/draft-pot-caldav-sharing-01.txt" target=3D"_blan=
k">https://www.ietf.org/archive/id/draft-pot-caldav-sharing-01.txt</a> (uns=
ure if source code still exists!)<br></div><div style=3D"font-family:Arial"=
><br></div><div style=3D"font-family:Arial"><div style=3D"font-family:Arial=
">Charter draft:<br></div><div style=3D"font-family:Arial"><div style=3D"fo=
nt-family:Arial"><br></div></div><div style=3D"font-family:Arial"><a href=
=3D"https://datatracker.ietf.org/meeting/104/materials/slides-104-calext-ca=
lext-charter-00" target=3D"_blank">https://datatracker.ietf.org/meeting/104=
/materials/slides-104-calext-calext-charter-00</a><br></div><div style=3D"f=
ont-family:Arial"><div style=3D"font-family:Arial"><br></div><div style=3D"=
font-family:Arial"><br></div><div style=3D"font-family:Arial">Cheers,<br></=
div><div style=3D"font-family:Arial"><br>Bron.<br></div></div></div><div st=
yle=3D"font-family:Arial"><br></div><div id=3D"gmail-m_-6115010463435807898=
sig56629417"><div class=3D"gmail-m_-6115010463435807898signature">--<br></d=
iv><div class=3D"gmail-m_-6115010463435807898signature">=C2=A0 Bron Gondwan=
a, CEO, FastMail Pty Ltd<br></div><div class=3D"gmail-m_-611501046343580789=
8signature">=C2=A0 <a href=3D"mailto:brong@fastmailteam.com" target=3D"_bla=
nk">brong@fastmailteam.com</a><br></div><div class=3D"gmail-m_-611501046343=
5807898signature"><br></div></div><div style=3D"font-family:Arial"><br></di=
v></div>_______________________________________________<br>
calsify mailing list<br>
<a href=3D"mailto:calsify@ietf.org" target=3D"_blank">calsify@ietf.org</a><=
br>
<a href=3D"https://www.ietf.org/mailman/listinfo/calsify" rel=3D"noreferrer=
" target=3D"_blank">https://www.ietf.org/mailman/listinfo/calsify</a><br>
</blockquote></div>

--00000000000032c5970584e6d59e--


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From: Daniel Migault <daniel.migault@ericsson.com>
To: Calsify <calsify@ietf.org>
CC: Jim Fenton <fenton@bluepopcorn.net>, "calext-chairs@ietf.org" <calext-chairs@ietf.org>
Thread-Topic: Note from wg meeting
Thread-Index: AQHU4vsl+Rtj46zo+Uy3DjLqbVOfT6YcU8iA
Date: Mon, 25 Mar 2019 13:28:59 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/calsify/t8Wu0W64iTDQ983UTNTBADBb60o>
Subject: Re: [calsify] Note from wg meeting
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Date: Tue, 26 Mar 2019 05:54:08 -0400
From: "Bron Gondwana" <brong@fastmailteam.com>
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--c7e331e530894ebabdf4c558ad6a4d84
Content-Type: text/plain

Thanks Mike - sorry about the delay in replying.

Do you think we should progress bulk-change as a separate document, or merge it into scheduling controls?

Ken implemented it in the Cyrus IMAPd server, but we aren't using it ourselves. I guess you could "bulk update" a single item to avoid scheduling as an alternative method.

Bron.

On Sat, Mar 9, 2019, at 07:38, Michael Douglass wrote:
> Cyrus wrote a spec for bulk import/updates

> https://github.com/apple/ccs-calendarserver/blob/master/doc/Extensions/calendarserver-bulk-change.xml

> I have the impression it's used but not certain.

> The spec says nothing about scheduling.

> On 3/8/19 07:07, Bron Gondwana wrote:
>> It's a bit cheeky asking this as a recent chair myself, but I had started work on this document as a purely FastMail suggestion, and during discussion at CalConnect last month in Zurich it came up that Google had done much the same thing themselves to handle bulk import, so I ran the idea past Lucia and put this draft together.
>> 
>> There's still some work to do, and I'm happy to hand over authorship to somebody else if anyone wants it, or to continue working on it myself. I've renamed things to be a bit more consistent than our implementation at FastMail, but of course we'd update to match the standard once the spec is done.
>> 
>> https://datatracker.ietf.org/doc/draft-gondwana-caldav-scheduling-controls/
>> 
>> (still plenty of work to do on it, but the bones are there)
>> 
>> I believe this is within the scope of this group's existing charter and would like to see it adopted.
>> 
>> Regards,
>> 
>> Bron.
>> 
>> --
>>  Bron Gondwana, CEO, FastMail Pty Ltd
>> brong@fastmailteam.com
>> 
>> 
>> 
>> _______________________________________________
calsify mailing list
>> calsify@ietf.org
>> https://www.ietf.org/mailman/listinfo/calsify
>> 
> _______________________________________________
> calsify mailing list
> calsify@ietf.org
> https://www.ietf.org/mailman/listinfo/calsify
> 

--
 Bron Gondwana, CEO, FastMail Pty Ltd
 brong@fastmailteam.com


--c7e331e530894ebabdf4c558ad6a4d84
Content-Type: text/html
Content-Transfer-Encoding: quoted-printable

<!DOCTYPE html><html><head><title></title><style type=3D"text/css">#fast=
mail-quoted p.fastmail-quoted-MsoNormal,#fastmail-quoted  p.fastmail-quo=
ted-MsoNoSpacing{margin-top:0px;margin-right:0px;margin-bottom:0px;margi=
n-left:0px;}

p.MsoNormal,p.MsoNoSpacing{margin:0}</style></head><body><div style=3D"f=
ont-family:Arial;">Thanks Mike - sorry about the delay in replying.<br><=
/div><div style=3D"font-family:Arial;"><br></div><div style=3D"font-fami=
ly:Arial;">Do you think we should progress bulk-change as a separate doc=
ument, or merge it into scheduling controls?<br></div><div style=3D"font=
-family:Arial;"><br></div><div style=3D"font-family:Arial;">Ken implemen=
ted it in the Cyrus IMAPd server, but we aren't using it ourselves.&nbsp=
; I guess you could "bulk update" a single item to avoid scheduling as a=
n alternative method.<br></div><div style=3D"font-family:Arial;"><br></d=
iv><div style=3D"font-family:Arial;">Bron.<br></div><div style=3D"font-f=
amily:Arial;"><br></div><div style=3D"font-family:Arial;">On Sat, Mar 9,=
 2019, at 07:38, Michael Douglass wrote:<br></div><blockquote type=3D"ci=
te" id=3D"fastmail-quoted"><p>Cyrus wrote a spec for bulk import/updates=
<br></p><p><a href=3D"https://github.com/apple/ccs-calendarserver/blob/m=
aster/doc/Extensions/calendarserver-bulk-change.xml" class=3D"fastmail-q=
uoted-moz-txt-link-freetext">https://github.com/apple/ccs-calendarserver=
/blob/master/doc/Extensions/calendarserver-bulk-change.xml</a><br></p><p=
>I have the impression it's used but not certain.<br></p><p>The spec say=
s nothing about scheduling.<br></p><div class=3D"fastmail-quoted-moz-cit=
e-prefix">On 3/8/19 07:07, Bron Gondwana wrote:<br></div><blockquote cit=
e=3D"mid:f2e29443-b5bb-42d3-bf42-6865a46ab5cf@www.fastmail.com" type=3D"=
cite"><div style=3D"font-family:Arial;">It's a bit cheeky asking this as=
 a
        recent chair myself, but I had started work on this document as
        a purely FastMail suggestion, and during discussion at
        CalConnect last month in Zurich it came up that Google had done
        much the same thing themselves to handle bulk import, so I ran
        the idea past Lucia and put this draft together.<br></div><div s=
tyle=3D"font-family:Arial;"><br></div><div style=3D"font-family:Arial;">=
There's still some work to do, and
        I'm happy to hand over authorship to somebody else if anyone
        wants it, or to continue working on it myself.&nbsp; I've rename=
d
        things to be a bit more consistent than our implementation at
        FastMail, but of course we'd update to match the standard once
        the spec is done.<br></div><div style=3D"font-family:Arial;"><br=
></div><div style=3D"font-family:Arial;"><a href=3D"https://datatracker.=
ietf.org/doc/draft-gondwana-caldav-scheduling-controls/">https://datatra=
cker.ietf.org/doc/draft-gondwana-caldav-scheduling-controls/</a><br></di=
v><div style=3D"font-family:Arial;"><br></div><div style=3D"font-family:=
Arial;">(still plenty of work to do on it,
        but the bones are there)<br></div><div style=3D"font-family:Aria=
l;"><br></div><div style=3D"font-family:Arial;">I believe this is within=
 the scope
        of this group's existing charter and would like to see it
        adopted.<br></div><div style=3D"font-family:Arial;"><br></div><d=
iv style=3D"font-family:Arial;">Regards,<br></div><div style=3D"font-fam=
ily:Arial;"><div style=3D"font-family:Arial;"><br></div><div style=3D"fo=
nt-family:Arial;">Bron.<br></div></div><div style=3D"font-family:Arial;"=
><br></div><div id=3D"fastmail-quoted-sig56629417"><div class=3D"fastmai=
l-quoted-signature">--<br></div><div class=3D"fastmail-quoted-signature"=
>&nbsp; Bron Gondwana, CEO, FastMail Pty Ltd<br></div><div class=3D"fast=
mail-quoted-signature">&nbsp; <a href=3D"mailto:brong@fastmailteam.com" =
class=3D"fastmail-quoted-moz-txt-link-abbreviated">brong@fastmailteam.co=
m</a><br></div><div class=3D"fastmail-quoted-signature"><br></div></div>=
<div style=3D"font-family:Arial;"><br></div><div style=3D"font-family:Ar=
ial;"><br></div><pre class=3D"fastmail-quoted-moz-quote-pre" wrap=3D"">_=
______________________________________________
calsify mailing list
<a href=3D"mailto:calsify@ietf.org" class=3D"fastmail-quoted-moz-txt-lin=
k-abbreviated">calsify@ietf.org</a>
<a href=3D"https://www.ietf.org/mailman/listinfo/calsify" class=3D"fastm=
ail-quoted-moz-txt-link-freetext">https://www.ietf.org/mailman/listinfo/=
calsify</a>
<br></pre></blockquote><div>____________________________________________=
___<br></div><div>calsify mailing list<br></div><div>calsify@ietf.org<br=
></div><div>https://www.ietf.org/mailman/listinfo/calsify<br></div><div>=
<br></div></blockquote><div style=3D"font-family:Arial;"><br></div><div =
id=3D"sig56629417"><div class=3D"signature">--<br></div><div class=3D"si=
gnature">&nbsp; Bron Gondwana, CEO, FastMail Pty Ltd<br></div><div class=
=3D"signature">&nbsp; brong@fastmailteam.com<br></div><div class=3D"sign=
ature"><br></div></div><div style=3D"font-family:Arial;"><br></div></bod=
y></html>
--c7e331e530894ebabdf4c558ad6a4d84--


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Date: Tue, 26 Mar 2019 06:02:32 -0400
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To: calsify@ietf.org
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Subject: [calsify] Call for adoption of vpoll - please reply by April 15
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--03cd0390cec74e51a735e58e5829bf5c
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Hi All,

As discussed in the Prague meeting, this is a formal call for adoption of work on a mechanism for consensus scheduling of events, based on the VPOLL work which can be seen in:

https://github.com/CalConnect/PUBLIC_DRAFTS/tree/master/vpoll

and

https://www.ietf.org/archive/id/draft-york-vpoll-04.txt

It is expected that after adopting this work, we would aim for Q3 2019 as a milestone for working group last call, with a possibility of dealing with it earlier if the current documents process quickly!

Please reply to this message by April 15th if you do not wish the working group to adopt this work.

Regards,

Bron.

--
 Bron Gondwana, CEO, FastMail Pty Ltd
 brong@fastmailteam.com


--03cd0390cec74e51a735e58e5829bf5c
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<!DOCTYPE html><html><head><title></title><style type=3D"text/css">p.Mso=
Normal,p.MsoNoSpacing{margin:0}</style></head><body><div style=3D"font-f=
amily:Arial;">Hi All,<br></div><div style=3D"font-family:Arial;"><br></d=
iv><div style=3D"font-family:Arial;">As discussed in the Prague meeting,=
 this is a formal call for adoption of work on a mechanism for consensus=
 scheduling of events, based on the VPOLL work which can be seen in:<br>=
</div><div style=3D"font-family:Arial;"><br></div><div style=3D"font-fam=
ily:Arial;"><a href=3D"https://github.com/CalConnect/PUBLIC_DRAFTS/tree/=
master/vpoll">https://github.com/CalConnect/PUBLIC_DRAFTS/tree/master/vp=
oll</a><br></div><div style=3D"font-family:Arial;"><br></div><div style=3D=
"font-family:Arial;">and<br></div><div style=3D"font-family:Arial;"><br>=
</div><div style=3D"font-family:Arial;"><a href=3D"https://www.ietf.org/=
archive/id/draft-york-vpoll-04.txt">https://www.ietf.org/archive/id/draf=
t-york-vpoll-04.txt</a><br></div><div style=3D"font-family:Arial;"><br><=
/div><div style=3D"font-family:Arial;">It is expected that after adoptin=
g this work, we would aim for Q3 2019 as a milestone for working group l=
ast call, with a possibility of dealing with it earlier if the current d=
ocuments process quickly!<br></div><div style=3D"font-family:Arial;"><br=
></div><div style=3D"font-family:Arial;">Please reply to this message by=
 April 15th if you do not wish the working group to adopt this work.<br>=
</div><div style=3D"font-family:Arial;"><br></div><div style=3D"font-fam=
ily:Arial;">Regards,<br></div><div style=3D"font-family:Arial;"><br></di=
v><div style=3D"font-family:Arial;">Bron.<br></div><div style=3D"font-fa=
mily:Arial;"><br></div><div id=3D"sig56629417"><div class=3D"signature">=
--<br></div><div class=3D"signature">&nbsp; Bron Gondwana, CEO, FastMail=
 Pty Ltd<br></div><div class=3D"signature">&nbsp; brong@fastmailteam.com=
<br></div><div class=3D"signature"><br></div></div><div style=3D"font-fa=
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--03cd0390cec74e51a735e58e5829bf5c--


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Subject: [calsify] Call for adoption of subscription upgrade - please reply by April 15
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--80d5890e54c7407bbff867c9766f17c1
Content-Type: text/plain

Hi All,

As discussed in the Prague meeting, this is a formal call for adoption of work on a mechanism for upgrading .ics calendar feeds to more efficient sychronisation mechanisms, based on the documents here:

https://github.com/CalConnect/PUBLIC_DRAFTS/tree/master/subscription-upgrade

and

https://www.ietf.org/archive/id/draft-douglass-subscription-upgrade-03.txt

It is expected that after adopting this work, we would aim for Q3 2019 as a milestone for working group last call, with a possibility of dealing with it earlier if the current documents process quickly!

Please reply to this message by April 15th if you do not wish the working group to adopt this work.

Regards,

Bron.

--
 Bron Gondwana, CEO, FastMail Pty Ltd
 brong@fastmailteam.com


--80d5890e54c7407bbff867c9766f17c1
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<!DOCTYPE html><html><head><title></title><style type=3D"text/css">p.Mso=
Normal,p.MsoNoSpacing{margin:0}
p.MsoNormal,p.MsoNoSpacing{margin:0}</style></head><body><div style=3D"f=
ont-family:Arial;">Hi All,<br></div><div style=3D"font-family:Arial;"><b=
r></div><div style=3D"font-family:Arial;">As discussed in the Prague mee=
ting, this is a formal call for adoption of work on a mechanism for upgr=
ading .ics calendar feeds to more efficient sychronisation mechanisms, b=
ased on the documents here:<br></div><div style=3D"font-family:Arial;">
<br></div><div style=3D"font-family:Arial;"><a href=3D"https://github.co=
m/CalConnect/PUBLIC_DRAFTS/tree/master/subscription-upgrade" rel=3D"nofo=
llow">https://github.com/CalConnect/PUBLIC_DRAFTS/tree/master/subscripti=
on-upgrade</a><br></div><div style=3D"font-family:Arial;"><br></div><div=
 style=3D"font-family:Arial;">and<br></div><div style=3D"font-family:Ari=
al;"><br></div><div style=3D"font-family:Arial;"><div style=3D"font-fami=
ly:Arial;"><a href=3D"https://www.ietf.org/archive/id/draft-douglass-sub=
scription-upgrade-03.txt" rel=3D"nofollow">https://www.ietf.org/archive/=
id/draft-douglass-subscription-upgrade-03.txt</a><br></div><div style=3D=
"font-family:Arial;"><br></div></div><div style=3D"font-family:Arial;">I=
t is expected that after adopting this work, we would aim for Q3 2019 as=
 a milestone for working group last call, with a possibility of dealing =
with it earlier if the current documents process quickly!<br></div><div =
style=3D"font-family:Arial;"><br></div><div style=3D"font-family:Arial;"=
>Please reply to this message by April 15th if you do not wish the worki=
ng group to adopt this work.<br></div><div style=3D"font-family:Arial;">=
<br></div><div style=3D"font-family:Arial;">Regards,<br></div><div style=
=3D"font-family:Arial;"><br></div><div style=3D"font-family:Arial;">Bron=
.<br></div><div style=3D"font-family:Arial;"><br></div><div id=3D"sig566=
29417"><div class=3D"signature">--<br></div><div class=3D"signature">&nb=
sp; Bron Gondwana, CEO, FastMail Pty Ltd<br></div><div class=3D"signatur=
e">&nbsp; brong@fastmailteam.com<br></div><div class=3D"signature"><br><=
/div></div><div style=3D"font-family:Arial;"><br></div></body></html>
--80d5890e54c7407bbff867c9766f17c1--


From nobody Tue Mar 26 04:00:32 2019
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Subject: [calsify] Milestones changed for calext WG
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Changed milestone "Send attachment dratf to IESG", set due date to April 2019
from June 2019.

URL: https://datatracker.ietf.org/wg/calext/about/


From nobody Tue Mar 26 04:07:15 2019
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A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Calendaring Extensions WG of the IETF.

        Title           : CalDAV Extension for scheduling controls
        Author          : Bron Gondwana
	Filename        : draft-ietf-calext-caldav-scheduling-controls-00.txt
	Pages           : 6
	Date            : 2019-03-26

Abstract:
   This document adds headers to control and restrict the scheduling
   behaviour of CalDAV servers when updating calendaring resources.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-calext-caldav-scheduling-controls/

There are also htmlized versions available at:
https://tools.ietf.org/html/draft-ietf-calext-caldav-scheduling-controls-00
https://datatracker.ietf.org/doc/html/draft-ietf-calext-caldav-scheduling-controls-00


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From: Ken Murchison <murch@fastmail.com>
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Subject: Re: [calsify] Request for adoption: draft-gondwana-caldav-scheduling-controls
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To clarify, I implemented bulk import only.  I haven't implemented bulk 
update.


On 3/26/19 5:54 AM, Bron Gondwana wrote:
> Thanks Mike - sorry about the delay in replying.
>
> Do you think we should progress bulk-change as a separate document, or 
> merge it into scheduling controls?
>
> Ken implemented it in the Cyrus IMAPd server, but we aren't using it 
> ourselves.  I guess you could "bulk update" a single item to avoid 
> scheduling as an alternative method.
>
> Bron.
>
> On Sat, Mar 9, 2019, at 07:38, Michael Douglass wrote:
>>
>> Cyrus wrote a spec for bulk import/updates
>>
>> https://github.com/apple/ccs-calendarserver/blob/master/doc/Extensions/calendarserver-bulk-change.xml
>>
>> I have the impression it's used but not certain.
>>
>> The spec says nothing about scheduling.
>>
>> On 3/8/19 07:07, Bron Gondwana wrote:
>>> It's a bit cheeky asking this as a recent chair myself, but I had 
>>> started work on this document as a purely FastMail suggestion, and 
>>> during discussion at CalConnect last month in Zurich it came up that 
>>> Google had done much the same thing themselves to handle bulk 
>>> import, so I ran the idea past Lucia and put this draft together.
>>>
>>> There's still some work to do, and I'm happy to hand over authorship 
>>> to somebody else if anyone wants it, or to continue working on it 
>>> myself.  I've renamed things to be a bit more consistent than our 
>>> implementation at FastMail, but of course we'd update to match the 
>>> standard once the spec is done.
>>>
>>> https://datatracker.ietf.org/doc/draft-gondwana-caldav-scheduling-controls/
>>>
>>> (still plenty of work to do on it, but the bones are there)
>>>
>>> I believe this is within the scope of this group's existing charter 
>>> and would like to see it adopted.
>>>
>>> Regards,
>>>
>>> Bron.
>>>
>>> --
>>>   Bron Gondwana, CEO, FastMail Pty Ltd
>>> brong@fastmailteam.com <mailto:brong@fastmailteam.com>
>>>
>>>
>>>
>>> _______________________________________________
>>> calsify mailing list
>>> calsify@ietf.org  <mailto:calsify@ietf.org>
>>> https://www.ietf.org/mailman/listinfo/calsify
>>>
>> _______________________________________________
>> calsify mailing list
>> calsify@ietf.org
>> https://www.ietf.org/mailman/listinfo/calsify
>>
>
> --
>   Bron Gondwana, CEO, FastMail Pty Ltd
>   brong@fastmailteam.com
>
>
>
> _______________________________________________
> calsify mailing list
> calsify@ietf.org
> https://www.ietf.org/mailman/listinfo/calsify

-- 
Ken Murchison
Cyrus Development Team
FastMail US LLC


--------------59B137188B3D3C6E59D3F1C0
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<html>
  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
  </head>
  <body text="#000000" bgcolor="#FFFFFF">
    <p>To clarify, I implemented bulk import only.  I haven't
      implemented bulk update.</p>
    <p><br>
    </p>
    <div class="moz-cite-prefix">On 3/26/19 5:54 AM, Bron Gondwana
      wrote:<br>
    </div>
    <blockquote type="cite"
      cite="mid:3bc83990-7ffe-45ff-81f7-ac5c987d45fa@www.fastmail.com">
      <meta http-equiv="content-type" content="text/html; charset=UTF-8">
      <title></title>
      <style type="text/css">#fastmail-quoted p.fastmail-quoted-MsoNormal,#fastmail-quoted  p.fastmail-quoted-MsoNoSpacing{margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0px;}

p.MsoNormal,p.MsoNoSpacing{margin:0}</style>
      <div style="font-family:Arial;">Thanks Mike - sorry about the
        delay in replying.<br>
      </div>
      <div style="font-family:Arial;"><br>
      </div>
      <div style="font-family:Arial;">Do you think we should progress
        bulk-change as a separate document, or merge it into scheduling
        controls?<br>
      </div>
      <div style="font-family:Arial;"><br>
      </div>
      <div style="font-family:Arial;">Ken implemented it in the Cyrus
        IMAPd server, but we aren't using it ourselves.  I guess you
        could "bulk update" a single item to avoid scheduling as an
        alternative method.<br>
      </div>
      <div style="font-family:Arial;"><br>
      </div>
      <div style="font-family:Arial;">Bron.<br>
      </div>
      <div style="font-family:Arial;"><br>
      </div>
      <div style="font-family:Arial;">On Sat, Mar 9, 2019, at 07:38,
        Michael Douglass wrote:<br>
      </div>
      <blockquote type="cite" id="fastmail-quoted">
        <p>Cyrus wrote a spec for bulk import/updates<br>
        </p>
        <p><a
href="https://github.com/apple/ccs-calendarserver/blob/master/doc/Extensions/calendarserver-bulk-change.xml"
            class="fastmail-quoted-moz-txt-link-freetext"
            moz-do-not-send="true">https://github.com/apple/ccs-calendarserver/blob/master/doc/Extensions/calendarserver-bulk-change.xml</a><br>
        </p>
        <p>I have the impression it's used but not certain.<br>
        </p>
        <p>The spec says nothing about scheduling.<br>
        </p>
        <div class="fastmail-quoted-moz-cite-prefix">On 3/8/19 07:07,
          Bron Gondwana wrote:<br>
        </div>
        <blockquote
          cite="mid:f2e29443-b5bb-42d3-bf42-6865a46ab5cf@www.fastmail.com"
          type="cite">
          <div style="font-family:Arial;">It's a bit cheeky asking this
            as a recent chair myself, but I had started work on this
            document as a purely FastMail suggestion, and during
            discussion at CalConnect last month in Zurich it came up
            that Google had done much the same thing themselves to
            handle bulk import, so I ran the idea past Lucia and put
            this draft together.<br>
          </div>
          <div style="font-family:Arial;"><br>
          </div>
          <div style="font-family:Arial;">There's still some work to do,
            and I'm happy to hand over authorship to somebody else if
            anyone wants it, or to continue working on it myself.  I've
            renamed things to be a bit more consistent than our
            implementation at FastMail, but of course we'd update to
            match the standard once the spec is done.<br>
          </div>
          <div style="font-family:Arial;"><br>
          </div>
          <div style="font-family:Arial;"><a
href="https://datatracker.ietf.org/doc/draft-gondwana-caldav-scheduling-controls/"
              moz-do-not-send="true">https://datatracker.ietf.org/doc/draft-gondwana-caldav-scheduling-controls/</a><br>
          </div>
          <div style="font-family:Arial;"><br>
          </div>
          <div style="font-family:Arial;">(still plenty of work to do on
            it, but the bones are there)<br>
          </div>
          <div style="font-family:Arial;"><br>
          </div>
          <div style="font-family:Arial;">I believe this is within the
            scope of this group's existing charter and would like to see
            it adopted.<br>
          </div>
          <div style="font-family:Arial;"><br>
          </div>
          <div style="font-family:Arial;">Regards,<br>
          </div>
          <div style="font-family:Arial;">
            <div style="font-family:Arial;"><br>
            </div>
            <div style="font-family:Arial;">Bron.<br>
            </div>
          </div>
          <div style="font-family:Arial;"><br>
          </div>
          <div id="fastmail-quoted-sig56629417">
            <div class="fastmail-quoted-signature">--<br>
            </div>
            <div class="fastmail-quoted-signature">  Bron Gondwana, CEO,
              FastMail Pty Ltd<br>
            </div>
            <div class="fastmail-quoted-signature">  <a
                href="mailto:brong@fastmailteam.com"
                class="fastmail-quoted-moz-txt-link-abbreviated"
                moz-do-not-send="true">brong@fastmailteam.com</a><br>
            </div>
            <div class="fastmail-quoted-signature"><br>
            </div>
          </div>
          <div style="font-family:Arial;"><br>
          </div>
          <div style="font-family:Arial;"><br>
          </div>
          <pre class="fastmail-quoted-moz-quote-pre" wrap="">_______________________________________________
calsify mailing list
<a href="mailto:calsify@ietf.org" class="fastmail-quoted-moz-txt-link-abbreviated" moz-do-not-send="true">calsify@ietf.org</a>
<a href="https://www.ietf.org/mailman/listinfo/calsify" class="fastmail-quoted-moz-txt-link-freetext" moz-do-not-send="true">https://www.ietf.org/mailman/listinfo/calsify</a>

</pre>
        </blockquote>
        <div>_______________________________________________<br>
        </div>
        <div>calsify mailing list<br>
        </div>
        <div><a class="moz-txt-link-abbreviated" href="mailto:calsify@ietf.org">calsify@ietf.org</a><br>
        </div>
        <div><a class="moz-txt-link-freetext" href="https://www.ietf.org/mailman/listinfo/calsify">https://www.ietf.org/mailman/listinfo/calsify</a><br>
        </div>
        <div><br>
        </div>
      </blockquote>
      <div style="font-family:Arial;"><br>
      </div>
      <div id="sig56629417">
        <div class="signature">--<br>
        </div>
        <div class="signature">  Bron Gondwana, CEO, FastMail Pty Ltd<br>
        </div>
        <div class="signature">  <a class="moz-txt-link-abbreviated" href="mailto:brong@fastmailteam.com">brong@fastmailteam.com</a><br>
        </div>
        <div class="signature"><br>
        </div>
      </div>
      <div style="font-family:Arial;"><br>
      </div>
      <br>
      <fieldset class="mimeAttachmentHeader"></fieldset>
      <pre class="moz-quote-pre" wrap="">_______________________________________________
calsify mailing list
<a class="moz-txt-link-abbreviated" href="mailto:calsify@ietf.org">calsify@ietf.org</a>
<a class="moz-txt-link-freetext" href="https://www.ietf.org/mailman/listinfo/calsify">https://www.ietf.org/mailman/listinfo/calsify</a>
</pre>
    </blockquote>
    <pre class="moz-signature" cols="72">-- 
Ken Murchison
Cyrus Development Team
FastMail US LLC</pre>
  </body>
</html>

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From nobody Tue Mar 26 05:17:26 2019
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Changed milestone "Adopt a document for consensus scheduling", set state to
active from review, accepting new milestone.

Changed milestone "Adopt a document for subscription upgrade", set state to
active from review, accepting new milestone.

Changed milestone "Submit scheduling controls document to IESG for
publication", set state to active from review, accepting new milestone.

URL: https://datatracker.ietf.org/wg/calext/about/


From nobody Tue Mar 26 09:39:22 2019
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From: Michael Douglass <mikeadouglass@gmail.com>
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Subject: Re: [calsify] Request for adoption: draft-gondwana-caldav-scheduling-controls
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I think it probably would bear some investigation.

I suspect the bulk import would work better for the special cases you 
mentioned.

My recollection is that you get some sort of per record status and that 
would be helpful.

Maybe we should talk about this - I see some other less importy uses - 
for example updating a whole bunch of related resources. That gets very 
messy if it has to be done as a bunch of requests and one of them fails.

On 3/26/19 07:16, Ken Murchison wrote:
>
> To clarify, I implemented bulk import only.  I haven't implemented 
> bulk update.
>
>
> On 3/26/19 5:54 AM, Bron Gondwana wrote:
>> Thanks Mike - sorry about the delay in replying.
>>
>> Do you think we should progress bulk-change as a separate document, 
>> or merge it into scheduling controls?
>>
>> Ken implemented it in the Cyrus IMAPd server, but we aren't using it 
>> ourselves.  I guess you could "bulk update" a single item to avoid 
>> scheduling as an alternative method.
>>
>> Bron.
>>
>> On Sat, Mar 9, 2019, at 07:38, Michael Douglass wrote:
>>>
>>> Cyrus wrote a spec for bulk import/updates
>>>
>>> https://github.com/apple/ccs-calendarserver/blob/master/doc/Extensions/calendarserver-bulk-change.xml
>>>
>>> I have the impression it's used but not certain.
>>>
>>> The spec says nothing about scheduling.
>>>
>>> On 3/8/19 07:07, Bron Gondwana wrote:
>>>> It's a bit cheeky asking this as a recent chair myself, but I had 
>>>> started work on this document as a purely FastMail suggestion, and 
>>>> during discussion at CalConnect last month in Zurich it came up 
>>>> that Google had done much the same thing themselves to handle bulk 
>>>> import, so I ran the idea past Lucia and put this draft together.
>>>>
>>>> There's still some work to do, and I'm happy to hand over 
>>>> authorship to somebody else if anyone wants it, or to continue 
>>>> working on it myself. I've renamed things to be a bit more 
>>>> consistent than our implementation at FastMail, but of course we'd 
>>>> update to match the standard once the spec is done.
>>>>
>>>> https://datatracker.ietf.org/doc/draft-gondwana-caldav-scheduling-controls/
>>>>
>>>> (still plenty of work to do on it, but the bones are there)
>>>>
>>>> I believe this is within the scope of this group's existing charter 
>>>> and would like to see it adopted.
>>>>
>>>> Regards,
>>>>
>>>> Bron.
>>>>
>>>> --
>>>>   Bron Gondwana, CEO, FastMail Pty Ltd
>>>> brong@fastmailteam.com <mailto:brong@fastmailteam.com>
>>>>
>>>>
>>>>
>>>> _______________________________________________
>>>> calsify mailing list
>>>> calsify@ietf.org  <mailto:calsify@ietf.org>
>>>> https://www.ietf.org/mailman/listinfo/calsify
>>>>
>>> _______________________________________________
>>> calsify mailing list
>>> calsify@ietf.org
>>> https://www.ietf.org/mailman/listinfo/calsify
>>>
>>
>> --
>>   Bron Gondwana, CEO, FastMail Pty Ltd
>> brong@fastmailteam.com
>>
>>
>>
>> _______________________________________________
>> calsify mailing list
>> calsify@ietf.org
>> https://www.ietf.org/mailman/listinfo/calsify
> -- 
> Ken Murchison
> Cyrus Development Team
> FastMail US LLC
>
> _______________________________________________
> calsify mailing list
> calsify@ietf.org
> https://www.ietf.org/mailman/listinfo/calsify

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    <p>I think it probably would bear some investigation.</p>
    <p>I suspect the bulk import would work better for the special cases
      you mentioned.</p>
    <p>My recollection is that you get some sort of per record status
      and that would be helpful.</p>
    <p>Maybe we should talk about this - I see some other less importy
      uses - for example updating a whole bunch of related resources.
      That gets very messy if it has to be done as a bunch of requests
      and one of them fails.<br>
    </p>
    <div class="moz-cite-prefix">On 3/26/19 07:16, Ken Murchison wrote:<br>
    </div>
    <blockquote type="cite"
      cite="mid:6474185c-9f34-7cbe-8875-790cb866058e@fastmail.com">
      <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
      <p>To clarify, I implemented bulk import only.  I haven't
        implemented bulk update.</p>
      <p><br>
      </p>
      <div class="moz-cite-prefix">On 3/26/19 5:54 AM, Bron Gondwana
        wrote:<br>
      </div>
      <blockquote type="cite"
        cite="mid:3bc83990-7ffe-45ff-81f7-ac5c987d45fa@www.fastmail.com">
        <meta http-equiv="content-type" content="text/html;
          charset=UTF-8">
        <title></title>
        <style type="text/css">#fastmail-quoted p.fastmail-quoted-MsoNormal,#fastmail-quoted  p.fastmail-quoted-MsoNoSpacing{margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0px;}

p.MsoNormal,p.MsoNoSpacing{margin:0}</style>
        <div style="font-family:Arial;">Thanks Mike - sorry about the
          delay in replying.<br>
        </div>
        <div style="font-family:Arial;"><br>
        </div>
        <div style="font-family:Arial;">Do you think we should progress
          bulk-change as a separate document, or merge it into
          scheduling controls?<br>
        </div>
        <div style="font-family:Arial;"><br>
        </div>
        <div style="font-family:Arial;">Ken implemented it in the Cyrus
          IMAPd server, but we aren't using it ourselves.  I guess you
          could "bulk update" a single item to avoid scheduling as an
          alternative method.<br>
        </div>
        <div style="font-family:Arial;"><br>
        </div>
        <div style="font-family:Arial;">Bron.<br>
        </div>
        <div style="font-family:Arial;"><br>
        </div>
        <div style="font-family:Arial;">On Sat, Mar 9, 2019, at 07:38,
          Michael Douglass wrote:<br>
        </div>
        <blockquote type="cite" id="fastmail-quoted">
          <p>Cyrus wrote a spec for bulk import/updates<br>
          </p>
          <p><a
href="https://github.com/apple/ccs-calendarserver/blob/master/doc/Extensions/calendarserver-bulk-change.xml"
              class="fastmail-quoted-moz-txt-link-freetext"
              moz-do-not-send="true">https://github.com/apple/ccs-calendarserver/blob/master/doc/Extensions/calendarserver-bulk-change.xml</a><br>
          </p>
          <p>I have the impression it's used but not certain.<br>
          </p>
          <p>The spec says nothing about scheduling.<br>
          </p>
          <div class="fastmail-quoted-moz-cite-prefix">On 3/8/19 07:07,
            Bron Gondwana wrote:<br>
          </div>
          <blockquote
            cite="mid:f2e29443-b5bb-42d3-bf42-6865a46ab5cf@www.fastmail.com"
            type="cite">
            <div style="font-family:Arial;">It's a bit cheeky asking
              this as a recent chair myself, but I had started work on
              this document as a purely FastMail suggestion, and during
              discussion at CalConnect last month in Zurich it came up
              that Google had done much the same thing themselves to
              handle bulk import, so I ran the idea past Lucia and put
              this draft together.<br>
            </div>
            <div style="font-family:Arial;"><br>
            </div>
            <div style="font-family:Arial;">There's still some work to
              do, and I'm happy to hand over authorship to somebody else
              if anyone wants it, or to continue working on it myself. 
              I've renamed things to be a bit more consistent than our
              implementation at FastMail, but of course we'd update to
              match the standard once the spec is done.<br>
            </div>
            <div style="font-family:Arial;"><br>
            </div>
            <div style="font-family:Arial;"><a
href="https://datatracker.ietf.org/doc/draft-gondwana-caldav-scheduling-controls/"
                moz-do-not-send="true">https://datatracker.ietf.org/doc/draft-gondwana-caldav-scheduling-controls/</a><br>
            </div>
            <div style="font-family:Arial;"><br>
            </div>
            <div style="font-family:Arial;">(still plenty of work to do
              on it, but the bones are there)<br>
            </div>
            <div style="font-family:Arial;"><br>
            </div>
            <div style="font-family:Arial;">I believe this is within the
              scope of this group's existing charter and would like to
              see it adopted.<br>
            </div>
            <div style="font-family:Arial;"><br>
            </div>
            <div style="font-family:Arial;">Regards,<br>
            </div>
            <div style="font-family:Arial;">
              <div style="font-family:Arial;"><br>
              </div>
              <div style="font-family:Arial;">Bron.<br>
              </div>
            </div>
            <div style="font-family:Arial;"><br>
            </div>
            <div id="fastmail-quoted-sig56629417">
              <div class="fastmail-quoted-signature">--<br>
              </div>
              <div class="fastmail-quoted-signature">  Bron Gondwana,
                CEO, FastMail Pty Ltd<br>
              </div>
              <div class="fastmail-quoted-signature">  <a
                  href="mailto:brong@fastmailteam.com"
                  class="fastmail-quoted-moz-txt-link-abbreviated"
                  moz-do-not-send="true">brong@fastmailteam.com</a><br>
              </div>
              <div class="fastmail-quoted-signature"><br>
              </div>
            </div>
            <div style="font-family:Arial;"><br>
            </div>
            <div style="font-family:Arial;"><br>
            </div>
            <pre class="fastmail-quoted-moz-quote-pre" wrap="">_______________________________________________
calsify mailing list
<a href="mailto:calsify@ietf.org" class="fastmail-quoted-moz-txt-link-abbreviated" moz-do-not-send="true">calsify@ietf.org</a>
<a href="https://www.ietf.org/mailman/listinfo/calsify" class="fastmail-quoted-moz-txt-link-freetext" moz-do-not-send="true">https://www.ietf.org/mailman/listinfo/calsify</a>

</pre>
          </blockquote>
          <div>_______________________________________________<br>
          </div>
          <div>calsify mailing list<br>
          </div>
          <div><a class="moz-txt-link-abbreviated"
              href="mailto:calsify@ietf.org" moz-do-not-send="true">calsify@ietf.org</a><br>
          </div>
          <div><a class="moz-txt-link-freetext"
              href="https://www.ietf.org/mailman/listinfo/calsify"
              moz-do-not-send="true">https://www.ietf.org/mailman/listinfo/calsify</a><br>
          </div>
          <div><br>
          </div>
        </blockquote>
        <div style="font-family:Arial;"><br>
        </div>
        <div id="sig56629417">
          <div class="signature">--<br>
          </div>
          <div class="signature">  Bron Gondwana, CEO, FastMail Pty Ltd<br>
          </div>
          <div class="signature">  <a class="moz-txt-link-abbreviated"
              href="mailto:brong@fastmailteam.com"
              moz-do-not-send="true">brong@fastmailteam.com</a><br>
          </div>
          <div class="signature"><br>
          </div>
        </div>
        <div style="font-family:Arial;"><br>
        </div>
        <br>
        <fieldset class="mimeAttachmentHeader"></fieldset>
        <pre class="moz-quote-pre" wrap="">_______________________________________________
calsify mailing list
<a class="moz-txt-link-abbreviated" href="mailto:calsify@ietf.org" moz-do-not-send="true">calsify@ietf.org</a>
<a class="moz-txt-link-freetext" href="https://www.ietf.org/mailman/listinfo/calsify" moz-do-not-send="true">https://www.ietf.org/mailman/listinfo/calsify</a>
</pre>
      </blockquote>
      <pre class="moz-signature" cols="72">-- 
Ken Murchison
Cyrus Development Team
FastMail US LLC</pre>
      <br>
      <fieldset class="mimeAttachmentHeader"></fieldset>
      <pre class="moz-quote-pre" wrap="">_______________________________________________
calsify mailing list
<a class="moz-txt-link-abbreviated" href="mailto:calsify@ietf.org">calsify@ietf.org</a>
<a class="moz-txt-link-freetext" href="https://www.ietf.org/mailman/listinfo/calsify">https://www.ietf.org/mailman/listinfo/calsify</a>
</pre>
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To: calsify@ietf.org
References: <f2e29443-b5bb-42d3-bf42-6865a46ab5cf@www.fastmail.com> <d7a70c82-ff9f-2564-5646-5e365c489903@gmail.com> <3bc83990-7ffe-45ff-81f7-ac5c987d45fa@www.fastmail.com> <6474185c-9f34-7cbe-8875-790cb866058e@fastmail.com> <e4abd165-927a-05c9-f4b6-0a32a47c2e93@gmail.com>
From: Ken Murchison <murch@fastmail.com>
Organization: FastMail US LLC
Message-ID: <89e06e3c-d617-e198-5c69-e502045355a9@fastmail.com>
Date: Tue, 26 Mar 2019 12:41:24 -0400
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Subject: Re: [calsify] Request for adoption: draft-gondwana-caldav-scheduling-controls
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On 3/26/19 12:39 PM, Michael Douglass wrote:
>
> I think it probably would bear some investigation.
>
> I suspect the bulk import would work better for the special cases you 
> mentioned.
>
> My recollection is that you get some sort of per record status and 
> that would be helpful.
>

Yes, bulk import as defined in the Daboo draft uses a 207 (Multi-status) 
response.



> Maybe we should talk about this - I see some other less importy uses - 
> for example updating a whole bunch of related resources. That gets 
> very messy if it has to be done as a bunch of requests and one of them 
> fails.
>
> On 3/26/19 07:16, Ken Murchison wrote:
>>
>> To clarify, I implemented bulk import only.  I haven't implemented 
>> bulk update.
>>
>>
>> On 3/26/19 5:54 AM, Bron Gondwana wrote:
>>> Thanks Mike - sorry about the delay in replying.
>>>
>>> Do you think we should progress bulk-change as a separate document, 
>>> or merge it into scheduling controls?
>>>
>>> Ken implemented it in the Cyrus IMAPd server, but we aren't using it 
>>> ourselves.  I guess you could "bulk update" a single item to avoid 
>>> scheduling as an alternative method.
>>>
>>> Bron.
>>>
>>> On Sat, Mar 9, 2019, at 07:38, Michael Douglass wrote:
>>>>
>>>> Cyrus wrote a spec for bulk import/updates
>>>>
>>>> https://github.com/apple/ccs-calendarserver/blob/master/doc/Extensions/calendarserver-bulk-change.xml
>>>>
>>>> I have the impression it's used but not certain.
>>>>
>>>> The spec says nothing about scheduling.
>>>>
>>>> On 3/8/19 07:07, Bron Gondwana wrote:
>>>>> It's a bit cheeky asking this as a recent chair myself, but I had 
>>>>> started work on this document as a purely FastMail suggestion, and 
>>>>> during discussion at CalConnect last month in Zurich it came up 
>>>>> that Google had done much the same thing themselves to handle bulk 
>>>>> import, so I ran the idea past Lucia and put this draft together.
>>>>>
>>>>> There's still some work to do, and I'm happy to hand over 
>>>>> authorship to somebody else if anyone wants it, or to continue 
>>>>> working on it myself.  I've renamed things to be a bit more 
>>>>> consistent than our implementation at FastMail, but of course we'd 
>>>>> update to match the standard once the spec is done.
>>>>>
>>>>> https://datatracker.ietf.org/doc/draft-gondwana-caldav-scheduling-controls/
>>>>>
>>>>> (still plenty of work to do on it, but the bones are there)
>>>>>
>>>>> I believe this is within the scope of this group's existing 
>>>>> charter and would like to see it adopted.
>>>>>
>>>>> Regards,
>>>>>
>>>>> Bron.
>>>>>
>>>>> --
>>>>>   Bron Gondwana, CEO, FastMail Pty Ltd
>>>>> brong@fastmailteam.com <mailto:brong@fastmailteam.com>
>>>>>
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> calsify mailing list
>>>>> calsify@ietf.org  <mailto:calsify@ietf.org>
>>>>> https://www.ietf.org/mailman/listinfo/calsify
>>>>>
>>>> _______________________________________________
>>>> calsify mailing list
>>>> calsify@ietf.org
>>>> https://www.ietf.org/mailman/listinfo/calsify
>>>>
>>>
>>> --
>>>   Bron Gondwana, CEO, FastMail Pty Ltd
>>> brong@fastmailteam.com
>>>
>>>
>>>
>>> _______________________________________________
>>> calsify mailing list
>>> calsify@ietf.org
>>> https://www.ietf.org/mailman/listinfo/calsify
>> -- 
>> Ken Murchison
>> Cyrus Development Team
>> FastMail US LLC
>>
>> _______________________________________________
>> calsify mailing list
>> calsify@ietf.org
>> https://www.ietf.org/mailman/listinfo/calsify
>
> _______________________________________________
> calsify mailing list
> calsify@ietf.org
> https://www.ietf.org/mailman/listinfo/calsify

-- 
Ken Murchison
Cyrus Development Team
FastMail US LLC


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<html>
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  </head>
  <body text="#000000" bgcolor="#FFFFFF">
    <p><br>
    </p>
    <div class="moz-cite-prefix">On 3/26/19 12:39 PM, Michael Douglass
      wrote:<br>
    </div>
    <blockquote type="cite"
      cite="mid:e4abd165-927a-05c9-f4b6-0a32a47c2e93@gmail.com">
      <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
      <p>I think it probably would bear some investigation.</p>
      <p>I suspect the bulk import would work better for the special
        cases you mentioned.</p>
      <p>My recollection is that you get some sort of per record status
        and that would be helpful.</p>
    </blockquote>
    <p><br>
    </p>
    <p>Yes, bulk import as defined in the Daboo draft uses a 207
      (Multi-status) response.</p>
    <p><br>
    </p>
    <p><br>
    </p>
    <blockquote type="cite"
      cite="mid:e4abd165-927a-05c9-f4b6-0a32a47c2e93@gmail.com">
      <p>Maybe we should talk about this - I see some other less importy
        uses - for example updating a whole bunch of related resources.
        That gets very messy if it has to be done as a bunch of requests
        and one of them fails.<br>
      </p>
      <div class="moz-cite-prefix">On 3/26/19 07:16, Ken Murchison
        wrote:<br>
      </div>
      <blockquote type="cite"
        cite="mid:6474185c-9f34-7cbe-8875-790cb866058e@fastmail.com">
        <meta http-equiv="Content-Type" content="text/html;
          charset=UTF-8">
        <p>To clarify, I implemented bulk import only.  I haven't
          implemented bulk update.</p>
        <p><br>
        </p>
        <div class="moz-cite-prefix">On 3/26/19 5:54 AM, Bron Gondwana
          wrote:<br>
        </div>
        <blockquote type="cite"
          cite="mid:3bc83990-7ffe-45ff-81f7-ac5c987d45fa@www.fastmail.com">
          <meta http-equiv="content-type" content="text/html;
            charset=UTF-8">
          <title></title>
          <style type="text/css">#fastmail-quoted p.fastmail-quoted-MsoNormal,#fastmail-quoted  p.fastmail-quoted-MsoNoSpacing{margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0px;}

p.MsoNormal,p.MsoNoSpacing{margin:0}</style>
          <div style="font-family:Arial;">Thanks Mike - sorry about the
            delay in replying.<br>
          </div>
          <div style="font-family:Arial;"><br>
          </div>
          <div style="font-family:Arial;">Do you think we should
            progress bulk-change as a separate document, or merge it
            into scheduling controls?<br>
          </div>
          <div style="font-family:Arial;"><br>
          </div>
          <div style="font-family:Arial;">Ken implemented it in the
            Cyrus IMAPd server, but we aren't using it ourselves.  I
            guess you could "bulk update" a single item to avoid
            scheduling as an alternative method.<br>
          </div>
          <div style="font-family:Arial;"><br>
          </div>
          <div style="font-family:Arial;">Bron.<br>
          </div>
          <div style="font-family:Arial;"><br>
          </div>
          <div style="font-family:Arial;">On Sat, Mar 9, 2019, at 07:38,
            Michael Douglass wrote:<br>
          </div>
          <blockquote type="cite" id="fastmail-quoted">
            <p>Cyrus wrote a spec for bulk import/updates<br>
            </p>
            <p><a
href="https://github.com/apple/ccs-calendarserver/blob/master/doc/Extensions/calendarserver-bulk-change.xml"
                class="fastmail-quoted-moz-txt-link-freetext"
                moz-do-not-send="true">https://github.com/apple/ccs-calendarserver/blob/master/doc/Extensions/calendarserver-bulk-change.xml</a><br>
            </p>
            <p>I have the impression it's used but not certain.<br>
            </p>
            <p>The spec says nothing about scheduling.<br>
            </p>
            <div class="fastmail-quoted-moz-cite-prefix">On 3/8/19
              07:07, Bron Gondwana wrote:<br>
            </div>
            <blockquote
              cite="mid:f2e29443-b5bb-42d3-bf42-6865a46ab5cf@www.fastmail.com"
              type="cite">
              <div style="font-family:Arial;">It's a bit cheeky asking
                this as a recent chair myself, but I had started work on
                this document as a purely FastMail suggestion, and
                during discussion at CalConnect last month in Zurich it
                came up that Google had done much the same thing
                themselves to handle bulk import, so I ran the idea past
                Lucia and put this draft together.<br>
              </div>
              <div style="font-family:Arial;"><br>
              </div>
              <div style="font-family:Arial;">There's still some work to
                do, and I'm happy to hand over authorship to somebody
                else if anyone wants it, or to continue working on it
                myself.  I've renamed things to be a bit more consistent
                than our implementation at FastMail, but of course we'd
                update to match the standard once the spec is done.<br>
              </div>
              <div style="font-family:Arial;"><br>
              </div>
              <div style="font-family:Arial;"><a
href="https://datatracker.ietf.org/doc/draft-gondwana-caldav-scheduling-controls/"
                  moz-do-not-send="true">https://datatracker.ietf.org/doc/draft-gondwana-caldav-scheduling-controls/</a><br>
              </div>
              <div style="font-family:Arial;"><br>
              </div>
              <div style="font-family:Arial;">(still plenty of work to
                do on it, but the bones are there)<br>
              </div>
              <div style="font-family:Arial;"><br>
              </div>
              <div style="font-family:Arial;">I believe this is within
                the scope of this group's existing charter and would
                like to see it adopted.<br>
              </div>
              <div style="font-family:Arial;"><br>
              </div>
              <div style="font-family:Arial;">Regards,<br>
              </div>
              <div style="font-family:Arial;">
                <div style="font-family:Arial;"><br>
                </div>
                <div style="font-family:Arial;">Bron.<br>
                </div>
              </div>
              <div style="font-family:Arial;"><br>
              </div>
              <div id="fastmail-quoted-sig56629417">
                <div class="fastmail-quoted-signature">--<br>
                </div>
                <div class="fastmail-quoted-signature">  Bron Gondwana,
                  CEO, FastMail Pty Ltd<br>
                </div>
                <div class="fastmail-quoted-signature">  <a
                    href="mailto:brong@fastmailteam.com"
                    class="fastmail-quoted-moz-txt-link-abbreviated"
                    moz-do-not-send="true">brong@fastmailteam.com</a><br>
                </div>
                <div class="fastmail-quoted-signature"><br>
                </div>
              </div>
              <div style="font-family:Arial;"><br>
              </div>
              <div style="font-family:Arial;"><br>
              </div>
              <pre class="fastmail-quoted-moz-quote-pre" wrap="">_______________________________________________
calsify mailing list
<a href="mailto:calsify@ietf.org" class="fastmail-quoted-moz-txt-link-abbreviated" moz-do-not-send="true">calsify@ietf.org</a>
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</pre>
            </blockquote>
            <div>_______________________________________________<br>
            </div>
            <div>calsify mailing list<br>
            </div>
            <div><a class="moz-txt-link-abbreviated"
                href="mailto:calsify@ietf.org" moz-do-not-send="true">calsify@ietf.org</a><br>
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            <div><a class="moz-txt-link-freetext"
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                moz-do-not-send="true">https://www.ietf.org/mailman/listinfo/calsify</a><br>
            </div>
            <div><br>
            </div>
          </blockquote>
          <div style="font-family:Arial;"><br>
          </div>
          <div id="sig56629417">
            <div class="signature">--<br>
            </div>
            <div class="signature">  Bron Gondwana, CEO, FastMail Pty
              Ltd<br>
            </div>
            <div class="signature">  <a
                class="moz-txt-link-abbreviated"
                href="mailto:brong@fastmailteam.com"
                moz-do-not-send="true">brong@fastmailteam.com</a><br>
            </div>
            <div class="signature"><br>
            </div>
          </div>
          <div style="font-family:Arial;"><br>
          </div>
          <br>
          <fieldset class="mimeAttachmentHeader"></fieldset>
          <pre class="moz-quote-pre" wrap="">_______________________________________________
calsify mailing list
<a class="moz-txt-link-abbreviated" href="mailto:calsify@ietf.org" moz-do-not-send="true">calsify@ietf.org</a>
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</pre>
        </blockquote>
        <pre class="moz-signature" cols="72">-- 
Ken Murchison
Cyrus Development Team
FastMail US LLC</pre>
        <br>
        <fieldset class="mimeAttachmentHeader"></fieldset>
        <pre class="moz-quote-pre" wrap="">_______________________________________________
calsify mailing list
<a class="moz-txt-link-abbreviated" href="mailto:calsify@ietf.org" moz-do-not-send="true">calsify@ietf.org</a>
<a class="moz-txt-link-freetext" href="https://www.ietf.org/mailman/listinfo/calsify" moz-do-not-send="true">https://www.ietf.org/mailman/listinfo/calsify</a>
</pre>
      </blockquote>
      <br>
      <fieldset class="mimeAttachmentHeader"></fieldset>
      <pre class="moz-quote-pre" wrap="">_______________________________________________
calsify mailing list
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<a class="moz-txt-link-freetext" href="https://www.ietf.org/mailman/listinfo/calsify">https://www.ietf.org/mailman/listinfo/calsify</a>
</pre>
    </blockquote>
    <pre class="moz-signature" cols="72">-- 
Ken Murchison
Cyrus Development Team
FastMail US LLC</pre>
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From: "Bron Gondwana" <brong@fastmailteam.com>
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Thanks Alexey for your work as our AD, and welcome Barry!

Regards,

Bron.

----- Original message -----
From: IETF Secretariat <ietf-secretariat-reply@ietf.org>
To: barryleiba@computer.org, iesg-secretary@ietf.org, calext-chairs@ietf.org, aamelnikov@fastmail.fm
Subject: Personnel change for calext WG
Date: Thursday, March 28, 2019 05:02

Shepherding AD added: Barry Leiba <barryleiba@computer.org>
Shepherding AD deleted: Alexey Melnikov <aamelnikov@fastmail.fm>


--
 Bron Gondwana, CEO, FastMail Pty Ltd
 brong@fastmailteam.com


--77c0aad905394572a12ec3c8052d7ffc
Content-Type: text/html
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<!DOCTYPE html><html><head><title></title><style type=3D"text/css">p.Mso=
Normal,p.MsoNoSpacing{margin:0}</style></head><body><div style=3D"font-f=
amily:Arial;">Thanks Alexey for your work as our AD, and welcome Barry!<=
br></div><div style=3D"font-family:Arial;"><br></div><div style=3D"font-=
family:Arial;">Regards,<br></div><div style=3D"font-family:Arial;"><br>B=
ron.<br></div><div style=3D"font-family:Arial;"><br></div><div style=3D"=
font-family:Arial;">----- Original message -----<br></div><div style=3D"=
font-family:Arial;">From: IETF Secretariat &lt;ietf-secretariat-reply@ie=
tf.org&gt;<br></div><div style=3D"font-family:Arial;">To: barryleiba@com=
puter.org, iesg-secretary@ietf.org, calext-chairs@ietf.org, aamelnikov@f=
astmail.fm<br></div><div style=3D"font-family:Arial;">Subject: Personnel=
 change for calext WG<br></div><div style=3D"font-family:Arial;">Date: T=
hursday, March 28, 2019 05:02<br></div><div style=3D"font-family:Arial;"=
><br></div><div type=3D"cite" id=3D"fastmail-quoted"><div style=3D"font-=
family:Arial;">Shepherding AD added: Barry Leiba &lt;barryleiba@computer=
.org&gt;<br></div><div style=3D"font-family:Arial;">Shepherding AD delet=
ed: Alexey Melnikov &lt;aamelnikov@fastmail.fm&gt;<br></div><div style=3D=
"font-family:Arial;"><br></div></div><div style=3D"font-family:Arial;"><=
br></div><div id=3D"sig56629417"><div class=3D"signature">--<br></div><d=
iv class=3D"signature">&nbsp; Bron Gondwana, CEO, FastMail Pty Ltd<br></=
div><div class=3D"signature">&nbsp; brong@fastmailteam.com<br></div><div=
 class=3D"signature"><br></div></div><div style=3D"font-family:Arial;"><=
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To: calsify@ietf.org
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From: Ken Murchison <murch@fastmail.com>
Organization: FastMail US LLC
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I second both sentiments.



On 3/27/19 2:09 PM, Bron Gondwana wrote:
> Thanks Alexey for your work as our AD, and welcome Barry!
>
> Regards,
>
> Bron.
>
> ----- Original message -----
> From: IETF Secretariat <ietf-secretariat-reply@ietf.org>
> To: barryleiba@computer.org, iesg-secretary@ietf.org, 
> calext-chairs@ietf.org, aamelnikov@fastmail.fm
> Subject: Personnel change for calext WG
> Date: Thursday, March 28, 2019 05:02
>
> Shepherding AD added: Barry Leiba <barryleiba@computer..org>
> Shepherding AD deleted: Alexey Melnikov <aamelnikov@fastmail.fm>
>
>
> --
>   Bron Gondwana, CEO, FastMail Pty Ltd
>   brong@fastmailteam.com
>
>
>
> _______________________________________________
> calsify mailing list
> calsify@ietf.org
> https://www.ietf.org/mailman/listinfo/calsify

-- 
Ken Murchison
Cyrus Development Team
FastMail US LLC


--------------2E75D750DD349EACFCC5AFF0
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    <p>I second both sentiments.</p>
    <p><br>
    </p>
    <p><br>
    </p>
    <div class="moz-cite-prefix">On 3/27/19 2:09 PM, Bron Gondwana
      wrote:<br>
    </div>
    <blockquote type="cite"
      cite="mid:1e5f0d3b-d293-43a1-90ca-661c34c7c6c0@www.fastmail.com">
      <meta http-equiv="content-type" content="text/html; charset=UTF-8">
      <title></title>
      <style type="text/css">p.MsoNormal,p.MsoNoSpacing{margin:0}</style>
      <div style="font-family:Arial;">Thanks Alexey for your work as our
        AD, and welcome Barry!<br>
      </div>
      <div style="font-family:Arial;"><br>
      </div>
      <div style="font-family:Arial;">Regards,<br>
      </div>
      <div style="font-family:Arial;"><br>
        Bron.<br>
      </div>
      <div style="font-family:Arial;"><br>
      </div>
      <div style="font-family:Arial;">----- Original message -----<br>
      </div>
      <div style="font-family:Arial;">From: IETF Secretariat
        <a class="moz-txt-link-rfc2396E" href="mailto:ietf-secretariat-reply@ietf.org">&lt;ietf-secretariat-reply@ietf.org&gt;</a><br>
      </div>
      <div style="font-family:Arial;">To: <a class="moz-txt-link-abbreviated" href="mailto:barryleiba@computer.org">barryleiba@computer.org</a>,
        <a class="moz-txt-link-abbreviated" href="mailto:iesg-secretary@ietf.org">iesg-secretary@ietf.org</a>, <a class="moz-txt-link-abbreviated" href="mailto:calext-chairs@ietf.org">calext-chairs@ietf.org</a>,
        <a class="moz-txt-link-abbreviated" href="mailto:aamelnikov@fastmail.fm">aamelnikov@fastmail.fm</a><br>
      </div>
      <div style="font-family:Arial;">Subject: Personnel change for
        calext WG<br>
      </div>
      <div style="font-family:Arial;">Date: Thursday, March 28, 2019
        05:02<br>
      </div>
      <div style="font-family:Arial;"><br>
      </div>
      <div type="cite" id="fastmail-quoted">
        <div style="font-family:Arial;">Shepherding AD added: Barry
          Leiba <a class="moz-txt-link-rfc2396E" href="mailto:barryleiba@computer..org">&lt;barryleiba@computer..org&gt;</a><br>
        </div>
        <div style="font-family:Arial;">Shepherding AD deleted: Alexey
          Melnikov <a class="moz-txt-link-rfc2396E" href="mailto:aamelnikov@fastmail.fm">&lt;aamelnikov@fastmail.fm&gt;</a><br>
        </div>
        <div style="font-family:Arial;"><br>
        </div>
      </div>
      <div style="font-family:Arial;"><br>
      </div>
      <div id="sig56629417">
        <div class="signature">--<br>
        </div>
        <div class="signature">  Bron Gondwana, CEO, FastMail Pty Ltd<br>
        </div>
        <div class="signature">  <a class="moz-txt-link-abbreviated" href="mailto:brong@fastmailteam.com">brong@fastmailteam.com</a><br>
        </div>
        <div class="signature"><br>
        </div>
      </div>
      <div style="font-family:Arial;"><br>
      </div>
      <br>
      <fieldset class="mimeAttachmentHeader"></fieldset>
      <pre class="moz-quote-pre" wrap="">_______________________________________________
calsify mailing list
<a class="moz-txt-link-abbreviated" href="mailto:calsify@ietf.org">calsify@ietf.org</a>
<a class="moz-txt-link-freetext" href="https://www.ietf.org/mailman/listinfo/calsify">https://www.ietf.org/mailman/listinfo/calsify</a>
</pre>
    </blockquote>
    <pre class="moz-signature" cols="72">-- 
Ken Murchison
Cyrus Development Team
FastMail US LLC</pre>
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Subject: Re: [calsify] Fwd: Personnel change for calext WG
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I would like to thanks Alexey for all the special attention he provided to
the WG and welcome Barry!
Yours,
Daniel

On Wed, Mar 27, 2019 at 2:11 PM Ken Murchison <murch@fastmail.com> wrote:

> I second both sentiments.
>
>
>
> On 3/27/19 2:09 PM, Bron Gondwana wrote:
>
> Thanks Alexey for your work as our AD, and welcome Barry!
>
> Regards,
>
> Bron.
>
> ----- Original message -----
> From: IETF Secretariat <ietf-secretariat-reply@ietf.org>
> <ietf-secretariat-reply@ietf.org>
> To: barryleiba@computer.org, iesg-secretary@ietf.org,
> calext-chairs@ietf.org, aamelnikov@fastmail.fm
> Subject: Personnel change for calext WG
> Date: Thursday, March 28, 2019 05:02
>
> Shepherding AD added: Barry Leiba <barryleiba@computer..org>
> <barryleiba@computer..org>
> Shepherding AD deleted: Alexey Melnikov <aamelnikov@fastmail.fm>
> <aamelnikov@fastmail.fm>
>
>
> --
>   Bron Gondwana, CEO, FastMail Pty Ltd
>   brong@fastmailteam.com
>
>
>
> _______________________________________________
> calsify mailing listcalsify@ietf.orghttps://www.ietf.org/mailman/listinfo/calsify
>
> --
> Ken Murchison
> Cyrus Development Team
> FastMail US LLC
>
> _______________________________________________
> calsify mailing list
> calsify@ietf.org
> https://www.ietf.org/mailman/listinfo/calsify
>

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<div dir=3D"ltr"><div dir=3D"ltr">I would like to thanks Alexey=C2=A0for al=
l the special attention he provided to the WG and welcome Barry!=C2=A0</div=
><div>Yours,=C2=A0</div><div>Daniel</div></div><br><div class=3D"gmail_quot=
e"><div dir=3D"ltr" class=3D"gmail_attr">On Wed, Mar 27, 2019 at 2:11 PM Ke=
n Murchison &lt;<a href=3D"mailto:murch@fastmail.com">murch@fastmail.com</a=
>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0px=
 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
 =20
   =20
 =20
  <div bgcolor=3D"#FFFFFF">
    <p>I second both sentiments.</p>
    <p><br>
    </p>
    <p><br>
    </p>
    <div class=3D"gmail-m_-4389301770734585904moz-cite-prefix">On 3/27/19 2=
:09 PM, Bron Gondwana
      wrote:<br>
    </div>
    <blockquote type=3D"cite">
     =20
     =20
     =20
      <div style=3D"font-family:Arial">Thanks Alexey for your work as our
        AD, and welcome Barry!<br>
      </div>
      <div style=3D"font-family:Arial"><br>
      </div>
      <div style=3D"font-family:Arial">Regards,<br>
      </div>
      <div style=3D"font-family:Arial"><br>
        Bron.<br>
      </div>
      <div style=3D"font-family:Arial"><br>
      </div>
      <div style=3D"font-family:Arial">----- Original message -----<br>
      </div>
      <div style=3D"font-family:Arial">From: IETF Secretariat
        <a class=3D"gmail-m_-4389301770734585904moz-txt-link-rfc2396E" href=
=3D"mailto:ietf-secretariat-reply@ietf.org" target=3D"_blank">&lt;ietf-secr=
etariat-reply@ietf.org&gt;</a><br>
      </div>
      <div style=3D"font-family:Arial">To: <a class=3D"gmail-m_-43893017707=
34585904moz-txt-link-abbreviated" href=3D"mailto:barryleiba@computer.org" t=
arget=3D"_blank">barryleiba@computer.org</a>,
        <a class=3D"gmail-m_-4389301770734585904moz-txt-link-abbreviated" h=
ref=3D"mailto:iesg-secretary@ietf.org" target=3D"_blank">iesg-secretary@iet=
f.org</a>, <a class=3D"gmail-m_-4389301770734585904moz-txt-link-abbreviated=
" href=3D"mailto:calext-chairs@ietf.org" target=3D"_blank">calext-chairs@ie=
tf.org</a>,
        <a class=3D"gmail-m_-4389301770734585904moz-txt-link-abbreviated" h=
ref=3D"mailto:aamelnikov@fastmail.fm" target=3D"_blank">aamelnikov@fastmail=
.fm</a><br>
      </div>
      <div style=3D"font-family:Arial">Subject: Personnel change for
        calext WG<br>
      </div>
      <div style=3D"font-family:Arial">Date: Thursday, March 28, 2019
        05:02<br>
      </div>
      <div style=3D"font-family:Arial"><br>
      </div>
      <div type=3D"cite" id=3D"gmail-m_-4389301770734585904fastmail-quoted"=
>
        <div style=3D"font-family:Arial">Shepherding AD added: Barry
          Leiba <a class=3D"gmail-m_-4389301770734585904moz-txt-link-rfc239=
6E" href=3D"mailto:barryleiba@computer..org" target=3D"_blank">&lt;barrylei=
ba@computer..org&gt;</a><br>
        </div>
        <div style=3D"font-family:Arial">Shepherding AD deleted: Alexey
          Melnikov <a class=3D"gmail-m_-4389301770734585904moz-txt-link-rfc=
2396E" href=3D"mailto:aamelnikov@fastmail.fm" target=3D"_blank">&lt;aamelni=
kov@fastmail.fm&gt;</a><br>
        </div>
        <div style=3D"font-family:Arial"><br>
        </div>
      </div>
      <div style=3D"font-family:Arial"><br>
      </div>
      <div id=3D"gmail-m_-4389301770734585904sig56629417">
        <div class=3D"gmail-m_-4389301770734585904signature">--<br>
        </div>
        <div class=3D"gmail-m_-4389301770734585904signature">=C2=A0 Bron Go=
ndwana, CEO, FastMail Pty Ltd<br>
        </div>
        <div class=3D"gmail-m_-4389301770734585904signature">=C2=A0 <a clas=
s=3D"gmail-m_-4389301770734585904moz-txt-link-abbreviated" href=3D"mailto:b=
rong@fastmailteam.com" target=3D"_blank">brong@fastmailteam.com</a><br>
        </div>
        <div class=3D"gmail-m_-4389301770734585904signature"><br>
        </div>
      </div>
      <div style=3D"font-family:Arial"><br>
      </div>
      <br>
      <fieldset class=3D"gmail-m_-4389301770734585904mimeAttachmentHeader">=
</fieldset>
      <pre class=3D"gmail-m_-4389301770734585904moz-quote-pre">____________=
___________________________________
calsify mailing list
<a class=3D"gmail-m_-4389301770734585904moz-txt-link-abbreviated" href=3D"m=
ailto:calsify@ietf.org" target=3D"_blank">calsify@ietf.org</a>
<a class=3D"gmail-m_-4389301770734585904moz-txt-link-freetext" href=3D"http=
s://www.ietf.org/mailman/listinfo/calsify" target=3D"_blank">https://www.ie=
tf.org/mailman/listinfo/calsify</a>
</pre>
    </blockquote>
    <pre class=3D"gmail-m_-4389301770734585904moz-signature" cols=3D"72">--=
=20
Ken Murchison
Cyrus Development Team
FastMail US LLC</pre>
  </div>

_______________________________________________<br>
calsify mailing list<br>
<a href=3D"mailto:calsify@ietf.org" target=3D"_blank">calsify@ietf.org</a><=
br>
<a href=3D"https://www.ietf.org/mailman/listinfo/calsify" rel=3D"noreferrer=
" target=3D"_blank">https://www.ietf.org/mailman/listinfo/calsify</a><br>
</blockquote></div>

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Subject: Re: [calsify] Fwd: Personnel change for calext WG
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+1


> On Mar 27, 2019, at 11:11, Ken Murchison <murch@fastmail.com> wrote:
>=20
> I second both sentiments.
>=20
>=20
>=20
>=20
>=20
> On 3/27/19 2:09 PM, Bron Gondwana wrote:
>> Thanks Alexey for your work as our AD, and welcome Barry!
>>=20
>> Regards,
>>=20
>> Bron.
>>=20
>> ----- Original message -----
>> From: IETF Secretariat <ietf-secretariat-reply@ietf.org> =
<mailto:ietf-secretariat-reply@ietf.org>
>> To: barryleiba@computer.org <mailto:barryleiba@computer.org>, =
iesg-secretary@ietf.org <mailto:iesg-secretary@ietf.org>, =
calext-chairs@ietf.org <mailto:calext-chairs@ietf.org>, =
aamelnikov@fastmail.fm <mailto:aamelnikov@fastmail.fm>
>> Subject: Personnel change for calext WG
>> Date: Thursday, March 28, 2019 05:02
>>=20
>> Shepherding AD added: Barry Leiba <barryleiba@computer..org> =
<mailto:barryleiba@computer..org>
>> Shepherding AD deleted: Alexey Melnikov <aamelnikov@fastmail.fm> =
<mailto:aamelnikov@fastmail.fm>
>>=20
>>=20
>> --
>>   Bron Gondwana, CEO, FastMail Pty Ltd
>>   brong@fastmailteam.com <mailto:brong@fastmailteam.com>
>>=20
>>=20
>>=20
>>=20
>> _______________________________________________
>> calsify mailing list
>> calsify@ietf.org <mailto:calsify@ietf.org>
>> https://www.ietf.org/mailman/listinfo/calsify =
<https://www.ietf.org/mailman/listinfo/calsify>
> --=20
> Ken Murchison
> Cyrus Development Team
> FastMail US LLC
> <murch.vcf>_______________________________________________
> calsify mailing list
> calsify@ietf.org
> https://www.ietf.org/mailman/listinfo/calsify


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<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html; =
charset=3Dus-ascii"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; line-break: after-white-space;" =
class=3D"">+1<div class=3D""><br class=3D""><div><br =
class=3D""><blockquote type=3D"cite" class=3D""><div class=3D"">On Mar =
27, 2019, at 11:11, Ken Murchison &lt;<a =
href=3D"mailto:murch@fastmail.com" class=3D"">murch@fastmail.com</a>&gt; =
wrote:</div><br class=3D"Apple-interchange-newline"><div class=3D"">
 =20
    <meta http-equiv=3D"Content-Type" content=3D"text/html; =
charset=3DUTF-8" class=3D"">
 =20
  <div text=3D"#000000" bgcolor=3D"#FFFFFF" class=3D""><p class=3D"">I =
second both sentiments.</p><p class=3D""><br class=3D"">
    </p><p class=3D""><br class=3D"">
    </p>
    <div class=3D"moz-cite-prefix">On 3/27/19 2:09 PM, Bron Gondwana
      wrote:<br class=3D"">
    </div>
    <blockquote type=3D"cite" =
cite=3D"mid:1e5f0d3b-d293-43a1-90ca-661c34c7c6c0@www.fastmail.com" =
class=3D"">
      <meta http-equiv=3D"content-type" content=3D"text/html; =
charset=3DUTF-8" class=3D"">
      <title class=3D""></title>
      <style type=3D"text/css" =
class=3D"">p.MsoNormal,p.MsoNoSpacing{margin:0}</style>
      <div style=3D"font-family:Arial;" class=3D"">Thanks Alexey for =
your work as our
        AD, and welcome Barry!<br class=3D"">
      </div>
      <div style=3D"font-family:Arial;" class=3D""><br class=3D"">
      </div>
      <div style=3D"font-family:Arial;" class=3D"">Regards,<br class=3D"">=

      </div>
      <div style=3D"font-family:Arial;" class=3D""><br class=3D"">
        Bron.<br class=3D"">
      </div>
      <div style=3D"font-family:Arial;" class=3D""><br class=3D"">
      </div>
      <div style=3D"font-family:Arial;" class=3D"">----- Original =
message -----<br class=3D"">
      </div>
      <div style=3D"font-family:Arial;" class=3D"">From: IETF =
Secretariat
        <a class=3D"moz-txt-link-rfc2396E" =
href=3D"mailto:ietf-secretariat-reply@ietf.org">&lt;ietf-secretariat-reply=
@ietf.org&gt;</a><br class=3D"">
      </div>
      <div style=3D"font-family:Arial;" class=3D"">To: <a =
class=3D"moz-txt-link-abbreviated" =
href=3D"mailto:barryleiba@computer.org">barryleiba@computer.org</a>,
        <a class=3D"moz-txt-link-abbreviated" =
href=3D"mailto:iesg-secretary@ietf.org">iesg-secretary@ietf.org</a>, <a =
class=3D"moz-txt-link-abbreviated" =
href=3D"mailto:calext-chairs@ietf.org">calext-chairs@ietf.org</a>,
        <a class=3D"moz-txt-link-abbreviated" =
href=3D"mailto:aamelnikov@fastmail.fm">aamelnikov@fastmail.fm</a><br =
class=3D"">
      </div>
      <div style=3D"font-family:Arial;" class=3D"">Subject: Personnel =
change for
        calext WG<br class=3D"">
      </div>
      <div style=3D"font-family:Arial;" class=3D"">Date: Thursday, March =
28, 2019
        05:02<br class=3D"">
      </div>
      <div style=3D"font-family:Arial;" class=3D""><br class=3D"">
      </div>
      <div type=3D"cite" id=3D"fastmail-quoted" class=3D"">
        <div style=3D"font-family:Arial;" class=3D"">Shepherding AD =
added: Barry
          Leiba <a class=3D"moz-txt-link-rfc2396E" =
href=3D"mailto:barryleiba@computer..org">&lt;barryleiba@computer..org&gt;<=
/a><br class=3D"">
        </div>
        <div style=3D"font-family:Arial;" class=3D"">Shepherding AD =
deleted: Alexey
          Melnikov <a class=3D"moz-txt-link-rfc2396E" =
href=3D"mailto:aamelnikov@fastmail.fm">&lt;aamelnikov@fastmail.fm&gt;</a><=
br class=3D"">
        </div>
        <div style=3D"font-family:Arial;" class=3D""><br class=3D"">
        </div>
      </div>
      <div style=3D"font-family:Arial;" class=3D""><br class=3D"">
      </div>
      <div id=3D"sig56629417" class=3D"">
        <div class=3D"signature">--<br class=3D"">
        </div>
        <div class=3D"signature">&nbsp; Bron Gondwana, CEO, FastMail Pty =
Ltd<br class=3D"">
        </div>
        <div class=3D"signature">&nbsp; <a =
class=3D"moz-txt-link-abbreviated" =
href=3D"mailto:brong@fastmailteam.com">brong@fastmailteam.com</a><br =
class=3D"">
        </div>
        <div class=3D"signature"><br class=3D"">
        </div>
      </div>
      <div style=3D"font-family:Arial;" class=3D""><br class=3D"">
      </div>
      <br class=3D"">
      <fieldset class=3D"mimeAttachmentHeader"></fieldset>
      <pre class=3D"moz-quote-pre" =
wrap=3D"">_______________________________________________
calsify mailing list
<a class=3D"moz-txt-link-abbreviated" =
href=3D"mailto:calsify@ietf.org">calsify@ietf.org</a>
<a class=3D"moz-txt-link-freetext" =
href=3D"https://www.ietf.org/mailman/listinfo/calsify">https://www.ietf.or=
g/mailman/listinfo/calsify</a>
</pre>
    </blockquote>
    <pre class=3D"moz-signature" cols=3D"72">--=20
Ken Murchison
Cyrus Development Team
FastMail US LLC</pre>
  </div>

<span =
id=3D"cid:326E2F60-8061-4378-AF7C-77B0E16B98C9">&lt;murch.vcf&gt;</span>__=
_____________________________________________<br class=3D"">calsify =
mailing list<br class=3D""><a href=3D"mailto:calsify@ietf.org" =
class=3D"">calsify@ietf.org</a><br =
class=3D"">https://www.ietf.org/mailman/listinfo/calsify<br =
class=3D""></div></blockquote></div><br class=3D""><div class=3D"">
<div dir=3D"auto" style=3D"caret-color: rgb(0, 0, 0); color: rgb(0, 0, =
0); letter-spacing: normal; text-align: start; text-indent: 0px; =
text-transform: none; white-space: normal; word-spacing: 0px; =
-webkit-text-stroke-width: 0px; text-decoration: none; word-wrap: =
break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" =
class=3D""><div style=3D"caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); =
font-family: Helvetica; font-size: 14px; font-style: normal; =
font-variant-caps: normal; letter-spacing: normal; text-align: start; =
text-indent: 0px; text-transform: none; white-space: normal; =
word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: =
none;" class=3D""><br class=3D"Apple-interchange-newline">--<br =
class=3D""><b class=3D"">Dave Thewlis, Executive&nbsp;Director</b><br =
class=3D""><b class=3D"">CalConnect - The Calendaring&nbsp;and =
Scheduling Consortium</b><br class=3D"">+1 707 840 9391 voice | +1 =
707&nbsp;498 2238 mobile | +1 415 946&nbsp;3454 fax<br class=3D""><a =
href=3D"http://www.calconnect.org" =
class=3D"">http://www.calconnect.org</a> |&nbsp;<a =
href=3D"mailto:Dave.Thewlis@calconnect.org" =
class=3D"">Dave.Thewlis@calconnect.org</a></div></div>
</div>
<br class=3D""></div></body></html>=

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From: "Tim Hare" <TimHare@comcast.net>
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1.       Does CalConnect have any guidance on a "discovery mechanism" for
discovering an iCalendar "feed" for a website?  Something like <link
rel="calendar" href= >  or something like an icon and link as is used for
RSS?

2.       Are there guidelines/recommendations for organizations publishing
calendar information?

 

Thanks
Tim Hare
Interested Bystander, Non-Inc.


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style=3D'font:7.0pt "Times New =
Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
</span></span><![endif]>Does CalConnect have any guidance on a =
&#8220;discovery mechanism&#8221; for discovering an iCalendar =
&#8220;feed&#8221; for a website?&nbsp; Something like &lt;link =
rel=3D&#8221;calendar&#8221; href=3D &gt; &nbsp;or something like an =
icon and link as is used for RSS?<o:p></o:p></p><p =
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style=3D'font:7.0pt "Times New =
Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span><![endif]>Are =
there guidelines/recommendations for organizations publishing calendar =
information?<o:p></o:p></p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p =
class=3DMsoNormal>Thanks<br>Tim Hare<br>Interested Bystander, =
Non-Inc.<o:p></o:p></p></div></body></html>
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From: Michael Douglass <mikeadouglass@gmail.com>
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Subject: Re: [calsify] A few questions
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On 3/28/19 00:01, Tim Hare wrote:
>
> 1.Does CalConnect have any guidance on a “discovery mechanism” for 
> discovering an iCalendar “feed” for a website?  Something like <link 
> rel=”calendar” href= >  or something like an icon and link as is used 
> for RSS?
>

We are actually working on exactly that. We have the outlines of a query 
that will return interesting public calendars.

Something like - send a query with the terms "baseball movies" and you 
get a response back showing a sorted result of matching calendars 
(possibly 0 in that case)


> 2.Are there guidelines/recommendations for organizations publishing 
> calendar information?
>
Looks like we don't - but this

https://devguide.calconnect.org/Table-of-Contents/

would be the place to put it.


> Thanks
> Tim Hare
> Interested Bystander, Non-Inc.
>
>
> _______________________________________________
> calsify mailing list
> calsify@ietf.org
> https://www.ietf.org/mailman/listinfo/calsify

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    On 3/28/19 00:01, Tim Hare wrote:<br>
    <blockquote type="cite"
      cite="mid:06d001d4e51a$e94a7b70$bbdf7250$@comcast.net">
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            style="mso-list:Ignore">1.<span style="font:7.0pt
              &quot;Times New Roman&quot;">       </span></span><!--[endif]-->Does
          CalConnect have any guidance on a “discovery mechanism” for
          discovering an iCalendar “feed” for a website?  Something like
          &lt;link rel=”calendar” href= &gt;  or something like an icon
          and link as is used for RSS?<o:p></o:p></p>
        <p class="MsoListParagraph"
          style="text-indent:-.25in;mso-list:l0 level1 lfo1"><!--[if !supportLists]--></p>
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    <br>
    <p>We are actually working on exactly that. We have the outlines of
      a query that will return interesting public calendars.</p>
    <p>Something like - send a query with the terms "baseball movies"
      and you get a response back showing a sorted result of matching
      calendars (possibly 0 in that case)<br>
    </p>
    <p><br>
    </p>
    <blockquote type="cite"
      cite="mid:06d001d4e51a$e94a7b70$bbdf7250$@comcast.net">
      <div class="WordSection1">
        <p class="MsoListParagraph"
          style="text-indent:-.25in;mso-list:l0 level1 lfo1"><span
            style="mso-list:Ignore">2.<span style="font:7.0pt
              &quot;Times New Roman&quot;">       </span></span><!--[endif]-->Are
          there guidelines/recommendations for organizations publishing
          calendar information?</p>
      </div>
    </blockquote>
    <p>Looks like we don't - but this <br>
    </p>
    <p><a class="moz-txt-link-freetext" href="https://devguide.calconnect.org/Table-of-Contents/">https://devguide.calconnect.org/Table-of-Contents/</a> <br>
    </p>
    <p>would be the place to put it.</p>
    <br>
    <blockquote type="cite"
      cite="mid:06d001d4e51a$e94a7b70$bbdf7250$@comcast.net">
      <div class="WordSection1">
        <p class="MsoListParagraph"
          style="text-indent:-.25in;mso-list:l0 level1 lfo1"><o:p></o:p></p>
        <p class="MsoNormal"><o:p> </o:p></p>
        <p class="MsoNormal">Thanks<br>
          Tim Hare<br>
          Interested Bystander, Non-Inc.<o:p></o:p></p>
      </div>
      <br>
      <fieldset class="mimeAttachmentHeader"></fieldset>
      <pre class="moz-quote-pre" wrap="">_______________________________________________
calsify mailing list
<a class="moz-txt-link-abbreviated" href="mailto:calsify@ietf.org">calsify@ietf.org</a>
<a class="moz-txt-link-freetext" href="https://www.ietf.org/mailman/listinfo/calsify">https://www.ietf.org/mailman/listinfo/calsify</a>
</pre>
    </blockquote>
  </body>
</html>

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From nobody Thu Mar 28 05:06:21 2019
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Subject: [calsify] Document Action: 'CalDAV Managed Attachments' to Informational RFC (draft-ietf-calext-caldav-attachments-04.txt)
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The IESG has approved the following document:
- 'CalDAV Managed Attachments'
  (draft-ietf-calext-caldav-attachments-04.txt) as Informational RFC

This document is the product of the Calendaring Extensions Working Group.

The IESG contact persons are Adam Roach, Alexey Melnikov and Barry Leiba.

A URL of this Internet Draft is:
https://datatracker.ietf.org/doc/draft-ietf-calext-caldav-attachments/




Technical Summary

  This specification defines an extension to the calendar access
  protocol (CalDAV) to allow attachments associated with iCalendar data
  to be stored and managed on the server. The attachments are not stored
  inline in the RFC5545 ATTACH property, but instead a link is created
  in a managed fashion.

Working Group Summary

  Version -00 was created in October 2016. As far as I can see there
  have been no major discussions on the calsify mailing list until draft
  -01 was uploaded. At this point, multiple vendors have voiced their
  support and indicated that they have implemented this draft on their
  servers.

  The document originates from draft-daboo-caldav-attachments, which was
  originally created in 2011. Since then the document has been discussed
  and developed within the CalConnect organization among relevant
  vendors in the sector.

  Some concerns were raised by ARTART reviewer about use of HTTP.
  As this specification has multiple interoperable implementations,
  the decision was made to downgrade it to Informational specification.

Document Quality
  
  Multiple vendors have indicated that they have already implemented
  this draft and successfully tested it with clients. The operations of
  this draft are part of the CalDAVTester suite, which is being run by
  multiple vendors during CalConnect interoperability testing sessions.

Personnel

  The Document Shepard is Philipp Kewisch,
  the Responsible Area Director is Alexey Melnikov.


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To: Alexey Melnikov <alexey.melnikov@isode.com>
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Subject: Re: [calsify] AD review of draft-ietf-calext-eventpub-extensions-10
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Hi Alexey- sorry I missed this. Some questions and comments below:

On 10/29/18 08:37, Alexey Melnikov wrote:
> Hi,
>
> I've done my review of the document. Other people found some of the 
> same issues, so you might have already fixed some of them.
> Also note that I might ask for an extra review from people more 
> familiar with use of geo-location in IETF protocols.
>
> In Section 3: XML and JSON need Informative References.

The text I have is

these extensions as a component rather than a property.  This is a
better match for the way XML and JSON handles such structures and
allows richer definitions.

This is just a reference to the hierarchical nature of XML and JSON 
rather than any particular data representation. What should I be 
referencing?

>
> In 7.3:
> Due to use of RFC 2119 "SHOULD": "text/html" needs an Normative 
> Reference, most likely to HTML5.

I have:

resource is not given by the "FMTTYPE" parameter.  If the media
type remains unknown, calendar applications SHOULD treat it as
type "text/html".




>
> In 7.6:
>    Property Name:  STRUCTURED-DATA
>
>    Purpose:  This property specifies ancillary data associated with the
>       calendar component.
>
> This is rather vague and I think this has implications for Security 
> Considerations (so you should mention something there), because 
> anything can be stuffed here, including executable content.
>
>    Value Type:  TEXT, BINARY or URI
>
> But the ABNF:
>
>      sdataprop   = "STRUCTURED-DATA" sdataparam
>                        (":" text) /
>                        (
>                          ";" "ENCODING" "=" "BASE64"
>                          ";" "VALUE" "=" "BINARY"
>                          ":" binary
>                        ) /
>                        (
>                          ";" "VALUE" "=" "URI"
>                          ":" uri
>                        )
>                        CRLF
>
> doesn't include TEXT "value" choice
>
> 8.1.  Participant
>
>    Component name:  PARTICIPANT
>
>    Purpose:  This component provides information about a participant in
>       an event or optionally a plain text typed value.
>
> What does "or optionally a plain text typed value" mean here? This is 
> a component, not a single property.

Yes - hangover from earlier. Changed to

This component provides information about a participant
in an event or task.

> Format Definition:
>
>    This property is defined by the following notation:
>
>      participantc  = "BEGIN" ":" "PARTICIPANT" CRLF
>                    partprop *alarmc
>                    "END" ":" "PARTICIPANT" CRLF
>
> Is inclusion of "alarmc" intentional? (If it is, that is fine. I just 
> think I check.)
That I can't remember - it has the flavor of per-user properties. 
However I can remove it.
>
>    Example:
>
>    The following is an example of this component.  It contains a SOURCE
>    property which points to a VCARD providing information about the
>    event participant.
>
>                      BEGIN:PARTICIPANT
>                      PARTICIPANT-TYPE:PRINCIPAL_PERFORMER
>
> PRINCIPAL_PERFORMER is not defined as a valid value for PARTICIPANT-TYPE.
>
> SOURCE:http://dir.example.com/vcard/aviolinist.vcf
>                      END:PARTICIPANT
>
>
>    The following is an example for the primary contact.
>
>                      BEGIN: PARTICIPANT
>                      SOURCE;FMTTYPE=text/vcard;
> http://dir.example.com/vcard/contacts/contact1.vcf
>                      PARTICIPANT-TYPE:PRIMARY-CONTACT
>
> PRIMARY-CONTACT is not defined either.
>
>                      DESCRIPTION:A contact:
>                      END:PARTICIPANT
Changed to PERFORMER and CONTACT
>
>
>
> In Section 9.1:
>
>    STRUCTURED-LOCATION;LABEL="The venue":
>     http://dir.example.com/venues/big-hall.vcf
>    STRUCTURED-LOCATION;LABEL="The venue":
>     http://dir.example.com/venues/parking.vcf
>
> Should different instances have different LABEL values?
Done in v-11
>
>
>
> 11.  Privacy Considerations
>
> I think this section needs to talk about unintended exposure of Geo 
> location.
>
Could you elaborate - are we talking about geo location of participants?

That's beginning to sound like an update to 5546

>
>
> 12.2.  New Registration Tables
>
>    This section defines new registration tables for PARTICIPANT-TYPE and
>    RESTYPE values.  These tables may be updated using the same
>    approaches laid down in Section 8.2.1 of [RFC5545]
>
> Section 8.2.1 of [RFC5545] implies that IANA registration procedure is 
> "Expert Review"
> or "Specification Required" (which implies "Expert Review"). Please 
> clarify this for IANA here.

And it looks like that section has an error. It states...

    designated expert and published in an RFC.  A Standards Track RFC is
    REQUIRED for the registration of new value data types that modify
    existing properties, as well as for the registration of participation
    status values to be used in "VEVENT" calendar components.

partstat is used for tasks so it should really have been less specific.

Returning to your comment...

I duplicated the approach taken in e.g. 
https://tools.ietf.org/html/rfc6638 so I think that the text ought to be 
fine. However - I have to admit I hadn't fully absorbed the implications 
so I do need to send emails to the specified lists


>
>
> Best Regards,
>
> Alexey
>
>

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<html>
  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
  </head>
  <body text="#000000" bgcolor="#FFFFFF">
    <p>Hi Alexey- sorry I missed this. Some questions and comments
      below:<br>
    </p>
    <div class="moz-cite-prefix">On 10/29/18 08:37, Alexey Melnikov
      wrote:<br>
    </div>
    <blockquote type="cite"
      cite="mid:009b5762-3b36-61c7-86a4-716391b6ed43@isode.com">Hi,
      <br>
      <br>
      I've done my review of the document. Other people found some of
      the same issues, so you might have already fixed some of them.
      <br>
      Also note that I might ask for an extra review from people more
      familiar with use of geo-location in IETF protocols.
      <br>
      <br>
      In Section 3: XML and JSON need Informative References.
      <br>
    </blockquote>
    <p>The text I have is</p>
    <pre>these extensions as a component rather than a property.  This is a
better match for the way XML and JSON handles such structures and
allows richer definitions.
</pre>
    <p>This is just a reference to the hierarchical nature of XML and
      JSON rather than any particular data representation. What should I
      be referencing? <br>
    </p>
    <blockquote type="cite"
      cite="mid:009b5762-3b36-61c7-86a4-716391b6ed43@isode.com">
      <br>
      In 7.3:
      <br>
      Due to use of RFC 2119 "SHOULD": "text/html" needs an Normative
      Reference, most likely to HTML5.
      <br>
    </blockquote>
    <p>I have:</p>
    <pre>resource is not given by the "FMTTYPE" parameter.  If the media
type remains unknown, calendar applications SHOULD treat it as
type "text/html".
</pre>
    <p><br>
    </p>
    <p><br>
    </p>
    <p><br>
    </p>
    <blockquote type="cite"
      cite="mid:009b5762-3b36-61c7-86a4-716391b6ed43@isode.com">
      <br>
      In 7.6:
      <br>
         Property Name:  STRUCTURED-DATA
      <br>
      <br>
         Purpose:  This property specifies ancillary data associated
      with the
      <br>
            calendar component.
      <br>
      <br>
      This is rather vague and I think this has implications for
      Security Considerations (so you should mention something there),
      because anything can be stuffed here, including executable
      content.
      <br>
      <br>
         Value Type:  TEXT, BINARY or URI
      <br>
      <br>
      But the ABNF:
      <br>
      <br>
           sdataprop   = "STRUCTURED-DATA" sdataparam
      <br>
                             (":" text) /
      <br>
                             (
      <br>
                               ";" "ENCODING" "=" "BASE64"
      <br>
                               ";" "VALUE" "=" "BINARY"
      <br>
                               ":" binary
      <br>
                             ) /
      <br>
                             (
      <br>
                               ";" "VALUE" "=" "URI"
      <br>
                               ":" uri
      <br>
                             )
      <br>
                             CRLF
      <br>
      <br>
      doesn't include TEXT "value" choice
      <br>
      <br>
      8.1.  Participant
      <br>
      <br>
         Component name:  PARTICIPANT
      <br>
      <br>
         Purpose:  This component provides information about a
      participant in
      <br>
            an event or optionally a plain text typed value.
      <br>
      <br>
      What does "or optionally a plain text typed value" mean here? This
      is a component, not a single property.
      <br>
    </blockquote>
    <p>Yes - hangover from earlier. Changed to <br>
    </p>
    <pre style="background-color:#ffffff;color:#000000;font-family:'Menlo';font-size:9.0pt;">This component provides information about a participant
in an event or task.

</pre>
    <blockquote type="cite"
      cite="mid:009b5762-3b36-61c7-86a4-716391b6ed43@isode.com">  
      Format Definition:
      <br>
      <br>
         This property is defined by the following notation:
      <br>
      <br>
           participantc  = "BEGIN" ":" "PARTICIPANT" CRLF
      <br>
                         partprop *alarmc
      <br>
                         "END" ":" "PARTICIPANT" CRLF
      <br>
      <br>
      Is inclusion of "alarmc" intentional? (If it is, that is fine. I
      just think I check.)
      <br>
    </blockquote>
    That I can't remember - it has the flavor of per-user properties.
    However I can remove it.<br>
    <blockquote type="cite"
      cite="mid:009b5762-3b36-61c7-86a4-716391b6ed43@isode.com">
      <br>
         Example:
      <br>
      <br>
         The following is an example of this component.  It contains a
      SOURCE
      <br>
         property which points to a VCARD providing information about
      the
      <br>
         event participant.
      <br>
      <br>
                           BEGIN:PARTICIPANT
      <br>
                           PARTICIPANT-TYPE:PRINCIPAL_PERFORMER
      <br>
      <br>
      PRINCIPAL_PERFORMER is not defined as a valid value for
      PARTICIPANT-TYPE.
      <br>
      <br>
      SOURCE:<a class="moz-txt-link-freetext" href="http://dir.example.com/vcard/aviolinist.vcf">http://dir.example.com/vcard/aviolinist.vcf</a>
      <br>
                           END:PARTICIPANT
      <br>
      <br>
      <br>
         The following is an example for the primary contact.
      <br>
      <br>
                           BEGIN: PARTICIPANT
      <br>
                           SOURCE;FMTTYPE=text/vcard;
      <br>
      <a class="moz-txt-link-freetext" href="http://dir.example.com/vcard/contacts/contact1.vcf">http://dir.example.com/vcard/contacts/contact1.vcf</a>
      <br>
                           PARTICIPANT-TYPE:PRIMARY-CONTACT
      <br>
      <br>
      PRIMARY-CONTACT is not defined either.
      <br>
      <br>
                           DESCRIPTION:A contact:
      <br>
                           END:PARTICIPANT
      <br>
    </blockquote>
    Changed to PERFORMER and CONTACT<br>
    <blockquote type="cite"
      cite="mid:009b5762-3b36-61c7-86a4-716391b6ed43@isode.com">
      <br>
      <br>
      <br>
      In Section 9.1:
      <br>
      <br>
         STRUCTURED-LOCATION;LABEL="The venue":
      <br>
          <a class="moz-txt-link-freetext" href="http://dir.example.com/venues/big-hall.vcf">http://dir.example.com/venues/big-hall.vcf</a>
      <br>
         STRUCTURED-LOCATION;LABEL="The venue":
      <br>
          <a class="moz-txt-link-freetext" href="http://dir.example.com/venues/parking.vcf">http://dir.example.com/venues/parking.vcf</a>
      <br>
      <br>
      Should different instances have different LABEL values?
      <br>
    </blockquote>
    Done in v-11<br>
    <blockquote type="cite"
      cite="mid:009b5762-3b36-61c7-86a4-716391b6ed43@isode.com">
      <br>
      <br>
      <br>
      11.  Privacy Considerations
      <br>
      <br>
      I think this section needs to talk about unintended exposure of
      Geo location.
      <br>
      <br>
    </blockquote>
    <p>Could you elaborate - are we talking about geo location of
      participants?</p>
    <p>That's beginning to sound like an update to 5546<br>
    </p>
    <blockquote type="cite"
      cite="mid:009b5762-3b36-61c7-86a4-716391b6ed43@isode.com">
      <br>
      <br>
      12.2.  New Registration Tables
      <br>
      <br>
         This section defines new registration tables for
      PARTICIPANT-TYPE and
      <br>
         RESTYPE values.  These tables may be updated using the same
      <br>
         approaches laid down in Section 8.2.1 of [RFC5545]
      <br>
      <br>
      Section 8.2.1 of [RFC5545] implies that IANA registration
      procedure is "Expert Review"
      <br>
      or "Specification Required" (which implies "Expert Review").
      Please clarify this for IANA here.
      <br>
    </blockquote>
    <p>And it looks like that section has an error. It states...</p>
    <pre>   designated expert and published in an RFC.  A Standards Track RFC is
   REQUIRED for the registration of new value data types that modify
   existing properties, as well as for the registration of participation
   status values to be used in "VEVENT" calendar components.  </pre>
    <p>partstat is used for tasks so it should really have been less
      specific.</p>
    <p>Returning to your comment...</p>
    <p>I duplicated the approach taken in e.g.
      <a class="moz-txt-link-freetext" href="https://tools.ietf.org/html/rfc6638">https://tools.ietf.org/html/rfc6638</a> so I think that the text ought
      to be fine. However - I have to admit I hadn't fully absorbed the
      implications so I do need to send emails to the specified lists<br>
    </p>
    <p> <br>
    </p>
    <blockquote type="cite"
      cite="mid:009b5762-3b36-61c7-86a4-716391b6ed43@isode.com">
      <br>
      <br>
      Best Regards,
      <br>
      <br>
      Alexey
      <br>
      <br>
      <br>
    </blockquote>
  </body>
</html>

--------------4FBB079BD98B6111DE5A904E--


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Subject: [calsify] Scheduling VJOURNAL
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Hello,

iCalendar says VTODO, VEVENT and VJOURNAL can contailn ORGANIZER and ATTENDEEs.

iTIP forsees for VTODO and VEVENT the methods PUBLISH, REQUEST, REPLY, ADD, CANCEL, REFRESH, COUNTER, DECLINECOUNTER.

For VJOURNAL the methods are PUBLISH, ADD and CANCEL and for all methods it says “It MUST NOT have "Attendees".”  For
ADD it says “it updates some instances not sending all the data … as it would have to do if the "REQUEST" method
were used.”.  But there is no REQUEST for VJOURNAL.

iMIP says nothing about VJOURNAL.

Scheduling Extensions for CalDAV mentions VTODO only on two places: in “Appendix A.  Scheduling Privileges
Summary/A.1.  Scheduling Inbox Privileges” and in „A.2.  Scheduling Outbox Privileges” both in the context of the
methods REQUEST, REPLY, ADD and CANCEL.

* Is METHOD: PUBLISH (without attendees, for any component time) the same as METHOD: REQUEST where the ATTENDEEs have
RSVP=FALSE and the other property parameters like PART-STATUS are ignored?

* What is the function of PART-STAT for ATTENDEE in VJOURNAL?

For users on other domains, uploading a VEVENT/VTODO with ATTENDEEs over HTTP sends emails to the attendees.  Shall the
server send also emails to the attendees of VJOURNAL and with which method?

Provided that the PUBLISH method is used for that operation, how shall a VEVENT/VTODO be WebDAV-uploaded, so that the
server uses also the PUBLISH method for iMIP?

Regards
  Дилян

