Re: caldav question

On Dec 4, 2007, at 6:25 AM, Randy Letness wrote:

> hank williams wrote:
>> Can anyone tell me if cosmo is *just* a caldav server as it relates  
>> to
>> calendar events, or are there extensions.
>>
>> Also I note a discussion on the website of a cardDav spec. does
>> cardDav + calDav = cosmo (not including the web UI). In other words  
>> if
>> one had a caldav and carddav server, would that server be a complete
>> back end for chandler
>
> Cosmo started out as mainly a caldav server with the thought being  
> that chandler would be using caldav as the synchronization  
> protocol.  The problem is that caldav's synchronization process was  
> a little inefficient as it involved sending a bunch of data even if  
> there were no changes.  That, and chandler's data model involved  
> more than just calendar events pushed us to come up with a new way  
> of storing the data (as items with stamps and attributes) and a new  
> protocol to access it (morse code).
>
> So cosmo is not just a caldav server, rather an item store that  
> supports several protocols of accessing/updating the data (morse  
> code/caldav/atom/webcal).  Chandler for the most part uses morse  
> code to share data to a cosmo server, but I'm pretty sure it can be  
> configured to publish data using caldav, meaning you could use  
> another caldav server as a back end for chandler.  I"m not sure if  
> there are any limitations.  Neither cosmo nor chandler supports  
> carddav yet.
>
> -Randy

The bare minimum required for Chandler to share collections with other  
Chandlers is a plain old WebDAV server.  In this scenario, publishing  
a collection to the server means Chandler MKCOL's a DAV collection and  
then PUTs an XML file for each item in the collection; or optionally  
Chandler can instead PUT/GET a monolithic .ics file representing a  
collection.  If you have a CalDAV server, Chandler should support that  
too for the most part.  By far the most tested path for sharing is the  
Chandler <-Morsecode-> Cosmo way.
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