HTTP supports an ‘OPTIONS’ method describing things supported by the URL.
Returns a property list describing options available for URL. The property list members are:
methodsA list of symbols specifying what HTTP methods the resource supports.
dav ¶A list of numbers specifying what DAV protocol/schema versions are supported.
dasl ¶A list of supported DASL search types supported (string form).
rangesA list of the units available for use in partial document fetches.
p3p ¶The Platform For Privacy Protection description for the resource. Currently this is just the raw header contents.