url: HTTP URL Options

 
 4.1.3 HTTP URL Options
 ----------------------
 
 HTTP supports an ‘OPTIONS’ method describing things supported by the
 URL.
 
  -- Function: url-http-options url
      Returns a property list describing options available for URL.  The
      property list members are:
 
      ‘methods’
           A 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).
 
      ‘ranges’
           A 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.