media type
Click on the red underlined text to get to the source
... XML
network entities, this document standardizes five new media types --
text/xml, application/xml, text/xml-external-parsed-entity ...
... application/xml-dtd -- as
well as a naming convention for identifying XML-based MIME media
types.
...
... WebDAV[RFC2518] protocol for remote web authoring. Thus, there is a
need for a media type to properly label the exchange of XML network
...
... SGML) ISO 8879[SGML], which has been assigned the media types
text/sgml and application/sgml, there are several reasons why use of
text/sgml or application/sgml to label XML ...
...
Similarly, XML will be used as a foundation for other media types,
including types in every branch of the IETF media types ...
... media types,
including types in every branch of the IETF media types tree. To
facilitate the processing of such types, media types ...
... media types tree. To
facilitate the processing of such types, media types based on XML,
but that are not identified using text/xml or application/xml ...
... XML Media Types ...
...
This document standardizes five media types related to XML MIME
entities: text/xml, application/xml ...
... application/xml-dtd.
Registration information for these media types is described in the
sections below.
...
... entities", "external DTD subsets", "external parsed entities", and
"external parameter entities". The media types text/xml and
application/xml MAY be used for "document entities", while text/xml-
...
... application/xml-external-parsed-entity
SHOULD be used for "external parsed entities". The media type
application/xml-dtd SHOULD be used for "external DTD ...
...
The top-level media type "text" has some restrictions on MIME
entities and they are described in [RFC2045] and [RFC2046 ...
... XML provides a general framework for defining sequences of structured
data. In some cases, it may be desirable to define new media types
that use XML but define a specific application of XML ...
... domain-specific security considerations or runtime information.
Furthermore, such media types may allow UTF-8 or UTF-16 only and
...
... UTF-16 only and
prohibit other charsets. This document does not prohibit such media
types and in fact expects them to proliferate. However, developers
of such media types are STRONGLY RECOMMENDED to use this document as
...
... charsets. This document does not prohibit such media
types and in fact expects them to proliferate. However, developers
of such media types are STRONGLY RECOMMENDED to use this document as
a basis for their registration. In particular, the charset parameter ...
...
MIME media type name: text
MIME subtype name ...
... of MIME bodies of the top-level media type "text" without
reference to any of the internal content. Thus, it is possible
that some agent ...
...
Encoding considerations: This media type MAY be encoded as
appropriate for the charset and the capabilities of the underlying
...
...
MIME media type name: application
MIME subtype name ...
...
Encoding considerations: This media type MAY be encoded as
appropriate for the charset and the capabilities of the underlying
...
... Published specification: Same as Section 3.1.
Applications which use this media type: Same as Section 3.1.
Additional information: Same as Section 3.1.
...
...
MIME media type name: text
MIME subtype name ...
... Published specification: Same as Section 3.1.
Applications which use this media type: Same as Section 3.1.
Additional information:
...
...
MIME media type name: application
MIME subtype name ...
... 3.1.
Applications which use this media type: Same as Section 3.1.
Additional information:
...
...
MIME media type name: application
MIME subtype name ...
... entity, and XML-based media types under the top-level type "text"
that define the charset parameter ...
... entity, application/xml-dtd, and XML-based media types under
top-level types other than "text" that define the charset parameter ...
... resulting from a retrieval action, and that the format and
interpretation of fragment identifiers is dependent on the media type
of the retrieval result.
...
...
As of today, no established specifications define identifiers for XML
media types. However, a working draft published by W3C, namely "XML
...
... specifies that the mechanism for embedding the base URI is dependent
on the media type.
...
... A Naming Convention for XML-Based Media Types ...
... suffix of
'+xml') for identifying XML-based MIME media types, whatever their
particular content may represent. This allows the use of generic XML
processors and technologies on a wide variety of different XML
document ...
... XML
processors and technologies on a wide variety of different XML
document types at a minimum cost, using existing frameworks for media
type registration.
...
... rapidly. Many of these XML document types would benefit from the
identification possibilities of a more specific MIME media type than
text/xml or application/xml can provide, and it is likely that many
...
... text/xml or application/xml can provide, and it is likely that many
new media types for XML-based document types will be registered in
the near and ongoing future.
...
... media type is introduced for an XML-based format, the name
of the media type SHOULD end with '+xml'. This convention will allow
applications that can process XML generically to detect that the MIME ...
... MIME entities by comparing the subtype to the pattern '*/*+xml'. (Of
course, 4 of the 5 media types defined in this document -- text/xml,
application/xml, text/xml-external-parsed-entity ...
... XML generic processing is not always appropriate for XML-based media
types. For example, authors of some such media types may wish that
the types remain entirely opaque ...
... XML generic processing is not always appropriate for XML-based media
types. For example, authors of some such media types may wish that
the types remain entirely opaque except to applications that are
...
... the types remain entirely opaque except to applications that are
specifically designed to deal with that media type. By NOT following
the naming convention '+xml', such media types can avoid XML ...
... specifically designed to deal with that media type. By NOT following
the naming convention '+xml', such media types can avoid XML-generic
processing. Since generic processing will be useful in many cases,
...
... processing. Since generic processing will be useful in many cases,
however -- including in some situations that are difficult to predict
ahead of time -- those registering media types SHOULD use the '+xml'
convention unless they have a particularly compelling reason not to.
...
...
The registration process for these media types is described in
[RFC2048]. The registrar for the IETF ...
... Registrations for new XML-based media types under the top-level type
"text" SHOULD, in specifying the charset parameter ...
... Registrations for new XML-based media types under top-level types
other than "text" SHOULD, in specifying the charset parameter ...
... These registrations SHOULD specify that the XML-based media type
being registered has all of the security considerations described in
...
... security considerations described in
RFC 3023prop plus any additional considerations specific to that media
type.
...
... 3023prop in specifying interoperability considerations, if these
considerations are not overridden by issues specific to that media
type.
...
... RFC2781], the UTF-16 family MUST NOT be
used with media types under the top-level type "text" except over
HTTP ...
... charset is "us-
ascii", the default charset value for text media types specified in
[RFC2046]. The default of "us-ascii" holds even if the text/xml
...
... identifier. However, no content type has yet
been registered for MathML and so this media type should not be used
until such registration has been completed.
...
... content type has yet been registered for
XSLT and so this media type should not be used until such
registration has been completed.
...
... content type has yet
been registered for RDF and so this media type should not be used
until such registration has been completed.
...
... identifier. However, no
content type has yet been registered for SVG and so this media type
should not be used until such registration has been completed.
...
... Freed, N. and N. Borenstein, "Multipurpose Internet Mail Extensions (MIME) Part Two: Media Types", RFC 2046draft, November 1996. ...
... XML-based format
such as image/svg+xml fits the definition of a MIME media type
exactly as well as image/png[PNG ...
... processors that are also XML processors, XML-based media types
-- even when treated as opaque, non-XML media types ...
... media types
-- even when treated as opaque, non-XML media types -- are just as
useful as any other media type and should be treated as such.
...
... opaque, non-XML media types -- are just as
useful as any other media type and should be treated as such.
...
... MIME type, use of text/xml or
application/xml to label discrete media types will hinder correct
dispatching and general interoperability. Finally, many XML
documents ...
... (*/vnd.*), or personal (*/prs.*); see [RFC2048] for details -- is
completely orthogonal from whether the media type uses XML syntax or
not. The suffix ...
... image/* to signal acceptance of any image format should
certainly be given access to media type image/svg+xml, which is in
all respects a standard image ...
... image subtype. It just happens to use XML to
describe its syntax. The two aspects of the media type are
completely orthogonal.
...
...
Rather than explicitly labeling XML-based media types, the processor
could look inside each type and see whether or not it is XML ...
... media subtype, and as such do not fundamentally affect the nature of
the content". However, all XML-based media types are by their nature
always XML. Parameters, as they have been defined in the MIME ...
... architecture, are never invariant across all instantiations of a
media type.
...
... XML processing, it has been suggested that
it is easier to implement this functionality when acting off of the
media type rather than a parameter. More important, sending agents
require no update ...
... content type (e.g., an ecommerce engine for
application/iotp+xml[RFC2801], once this media type is registered).
...
... content type, the top-level for
the kind of content and the second-level for the specific media type.
[RFC2048] extends this in an interoperable way by using prefixes ...
... semantics be
assigned to its presence. Therefore, application/foo and
application/foo+xml SHOULD be treated as completely independent media
types. Although, for example, text/calendar+xml could be an XML
version of text/calendar ...
... text/calendar[RFC2445], it is possible that this
(hypothetical) new media type would include new semantics as well as
new syntax, and in any case, there would be many applications that
...
...
Whether the inventors of a media type, today, design it for dispatch
to generic XML processing machinery (and most won't) is not the
...
... critical issue. The core notion is that the knowledge that some
media type happens to use XML syntax opens the door to unanticipated
kinds of processing beyond those envisioned by its inventors, and on
...
...
Developers of new media types are often tightly focused on a
particular type of processing that meets current needs. But there is
no need to rule out generic processing as well, which could make your
...
... particular type of processing that meets current needs. But there is
no need to rule out generic processing as well, which could make your
media type more valuable over time. It is believed that registering
with the '+xml' suffix will cause no interoperability ...
... application/xml-external-
parsed-entity are added as media types for external parsed entities,
and text/xml and application/xml are now prohibited.
...
...
Second, application/xml-dtd is added as a media type for external DTD
subsets and external parameter entities, and text/xml and
...
...
Fourth, a naming convention ('+xml') for XML-based media types has
been added, which also updates [RFC2048] as described in Section 7.
...
... RFC2048] as described in Section 7.
By following this convention, an XML-based media type can be easily
recognized as such.
...