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CalDAV clients MUST support inline attachments as specified in iCalendar [RFC2445]. CalDAV servers MUST support inline attachments, so clients can rely on being able to create attachments this way. On the other hand, inline attachments have some drawbacks:

o Servers MAY impose limitations on the size of calendar object resources (i.e., refusing PUT requests of very large iCalendar objects). Servers that impose such limitations MUST use the CALDAV:max-resource-size property on a calendar collection to inform the client as to what the limitation is (see Section 5.2.5).

o Servers MAY impose storage quota limitations on calendar collections (See [RFC4331]).

o Any change to a calendar object resource containing an inline attachment requires the entire inline attachment to be re- uploaded.

o Clients synchronizing a changed calendar object resource have to download the entire calendar object resource, even if the attachment is unchanged.

This document was automatically converted to XHTML using an RFC to HTML converter with the original text document at the Internet Engineering Task Force web site at .  The original text document should be referred to if there are any errors or discrepancies found in this document.

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