[ietf-types] Registration of media type application/opensearchdescription+xml

[Frank Ellermann <[e-mail]>]

   Type name:      application

   Subtype name:   opensearchdescription+xml

   Required parameters:
                   There are no required parameters.

   Optional parameters:
                   charset (defaults to "UTF-8")

   Encoding considerations:
                   Identical to those of "application/xml" as described
                   in RFC 3023; especially "UTF-8" (RFC 3629) and its
                   proper subset "US-ASCII" are supposed to work.
                   For non-ASCII documents served as "text/xml" the
                   "charset" parameter is required; this might be
                   relevant when authors are unable to configure the
                   server hosting their OSDD (OpenSearch Description
                   Document).

   Security considerations:
                   All general security and privacy considerations for
                   sending queries to servers specified in an URL are
                   applicable.

                   Where clients support the optional update feature in
                   OSDDs it affects the privacy of users.

                   The Ecmascript API AddSearchProvider() typically
                   enforces a "same origin" policy for the OSDD; the URL
                   element within the OSDD can designate a third party
                   as search provider.

                   An OSDD can claim to be a search description for X,
                   but actually do something else.

   Interoperability considerations:
                   OSDDs use the <http://a9.com/-/spec/opensearch/1.1/>
                   XML name space, optionally in conjunction with other
                   XML name spaces for extensions or application specific
                   purposes.

   Published specification:
                   <http://www.opensearch.org/Specifications/OpenSearch/1.1>

   Applications that use this media type:
                   Various Web browsers, search engines, and software
                   libraries support OSDDs.  The "search" link relation
                   is used on many Web pages with this media type.

                   The Ecmascript API AddSearchProvider() documented for
                   WhatWG HTML uses this media type.

   Additional information:
                   OSDDs have no "magic numbers" as defined in RFC 4288.
                   There are no special "common file name extensions" for
                   OSDDs, OSDDs are XML documents.  If specific extensions
                   are desired ".a9.xml" (or similar) might do the trick.

   Person & email address to contact for further information:
                   <http://groups.google.com/group/opensearch>
                   <http://www.opensearch.org/Community/Guidelines>

   Intended usage: COMMON

   Restrictions on usage:
                   None

   Author:         DeWitt Clinton

   Change controller:
                   <http://www.opensearch.org/>