Attachments can be stored as data for an event. Use the sendattach parameter to specify whether an actual attachment is being sent as part of the iTIP invitation data, "0" for none, and "1" for attachment present in data.
Attachments can be stored as part of the event on the Calendar Server through the storeevents.wcap command. This command is enhanced with following new arguments:
deleteattach=attach-id1;attach-id2;attach-id3 : Deletes existing attachments from an event using the parameter without deleting the event itself. The attachid1, attachid2, and so on should be the attachment id values emitted in the X-S1CS-ATTACH-ID x-token as part of the VEVENT returned for a fetch command. You can use the delete_by_* commands to delete the events as well as the associated attachments.
sendattach = 0/1 : Determines whether the actual attachments are sent as part of the iTIP invitation or not.
In earlier versions of Calendar Server, attachments could only be sent as a reference (URL) to a Web location. The attachments parameter was used to hold the URL.
The attachments parameter has been deprecated. It remains functional in this release only for backward compatibility. Change any scripts you have that use the old parameter to the new attachment model.