iTIP Bug: VFREEBUSY REPLYs

[Bruce_Kahn@xxxxxxxxxxxxxxxx]

In spending some cycles checking something
I noticed a conflict between RFCs 2445 and 2446.  In 2445, Section
4.6.4 Free/Busy Component we wrote:

   When used to reply to a request for free/busy
time, the "ATTENDEE"
   property specifies the calendar user responding to the free/busy
time
   request; the "ORGANIZER" property specifies the calendar
user that
   originally requested the free/busy time; the "FREEBUSY"
property
   specifies the free/busy time information (if it exists); and the
   "UID" and "DTSTAMP" properties are specified
to assist in proper
   sequencing of multiple free/busy time replies.

and in 2446, Section 3.3.2 REPLY we
have the restriction table with:

    DTEND          
1      DateTime values must be in UTC
    DTSTART         1      DateTime
values must be in UTC
    FREEBUSY        1+      (values
MUST all be of the same data
                    
       type. Multiple instances are allowed.
                    
       Multiple instances MUST be sorted in
                    
       ascending order. Values MAY NOT overlap)

There are 2 discrepancies:

1: There is no mention of DTSTART/DTEND
in 2445 but its in the restriction table for 2446
2: The restriction table in 2446 says
1+ for FREEBUSY but 2445 clearly says "if it exists"

For #1, I think we can remove the DTSTART/DTEND
from 2446 since the REQUEST was the one to specify the desired range, the
REPLY only has to return the data for that range.  

For #2, I think that we need to change
the restriction table in 2446 to:
    FREEBUSY        0+
     (values MUST all be of the same data

so that we can accurately return "There
are no entries for the requested range".  Sending back an 'emtpy'
FREEBUSY is a poor hack...

Bruce
PS: Anyone recall why we would say "Values
MAY NOT overlap" in the table since multiple bookings are legit??...
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Bruce Kahn                  
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