Re: DTSTART for recurrence instances

On 5 déc. 03, at 21:27, Doug Royer wrote:
> So, if the ORGANIZER sends the following iTIP object to ATTENDEE:
>
>    BEGIN:VEVENT
>    UID:XXX
>    SEQUENCE:0
>    ...
>    METHOD:REQUEST
>    ATTENDEE:attendee
>    ...
>    DTSTART: 1-dec-2003 at noon
>    DTEND: 1-dec-2003 at 1pm
>    ...
>    RRULE:FREQ=DAILY;COUNT=3
>    ...
>    END:VEVENT
>
> (And 'attendee' sends a  reply saying yes).
>
> Now later ORGANIZER sends an iTIP update to move the 2nd instance from 
>  noon->1pm
> and have it at 2pm->3:30pm:
>
>    BEGIN:VEVENT
>    UID:XXX
>    SEQUENCE:1
>    ...
>    METHOD:REQUEST
>    DTSTART:2-dec-2003 at 2pm
>    DTEND:2-dec-2003 at 3:30pm
>    RECURRENCE-ID:2-dec-2003 at noon
>    ..
>    END:VEVENT
>
> Do you agree that is a valid object to tell the ATTENDEE of the single 
> instance change?

I agree. iTIP to request that the instance identified by UID xxx and 
RECURRENCE-ID 2-dec-2003 noon (occurrence time) has now a DTSTART of 
2-dec-2003 2pm (and DTEND of 3:30pm). Although this was the first 
solution, let's call that 'method D' to differentiate it from the A, B, 
C proposals of your next mail.

Ol.