mirror of
https://github.com/moparisthebest/xeps
synced 2024-11-22 01:02:17 -05:00
56412aa8c0
git-svn-id: file:///home/ksmith/gitmigration/svn/xmpp/trunk@51 4b5297f7-1745-476d-ba37-a9c6900126ab
315 lines
11 KiB
XML
315 lines
11 KiB
XML
<?xml version='1.0' encoding='UTF-8'?>
|
|
<!DOCTYPE xep SYSTEM 'xep.dtd' [
|
|
<!ENTITY % ents SYSTEM 'xep.ent'>
|
|
%ents;
|
|
]>
|
|
<?xml-stylesheet type='text/xsl' href='xep.xsl'?>
|
|
<xep>
|
|
<header>
|
|
<title>User Tune</title>
|
|
<abstract>This document defines an XMPP protocol extension for communicating information about the music to which a user is listening.</abstract>
|
|
&LEGALNOTICE;
|
|
<number>0118</number>
|
|
<status>Draft</status>
|
|
<type>Standards Track</type>
|
|
<jig>Standards JIG</jig>
|
|
<dependencies>
|
|
<spec>XMPP Core</spec>
|
|
<spec>XMPP IM</spec>
|
|
<spec>XEP-0060</spec>
|
|
</dependencies>
|
|
<supersedes/>
|
|
<supersededby/>
|
|
<shortname>tune</shortname>
|
|
<schemaloc>
|
|
<url>http://www.xmpp.org/schemas/tune.xsd</url>
|
|
</schemaloc>
|
|
&stpeter;
|
|
<revision>
|
|
<version>1.0</version>
|
|
<date>2004-11-12</date>
|
|
<initials>psa</initials>
|
|
<remark>Per a vote of the Jabber Council, advanced status to Draft.</remark>
|
|
</revision>
|
|
<revision>
|
|
<version>0.10</version>
|
|
<date>2004-10-29</date>
|
|
<initials>psa</initials>
|
|
<remark>Added example with URL.</remark>
|
|
</revision>
|
|
<revision>
|
|
<version>0.9</version>
|
|
<date>2004-10-27</date>
|
|
<initials>psa</initials>
|
|
<remark>Changed recommendation to not include the <length/> element if the track time is unknown.</remark>
|
|
</revision>
|
|
<revision>
|
|
<version>0.8</version>
|
|
<date>2004-10-26</date>
|
|
<initials>psa</initials>
|
|
<remark>Added implementation notes; clarified nature of <source/> and <track/> elements; if length is unknown, set to zero.</remark>
|
|
</revision>
|
|
<revision>
|
|
<version>0.7</version>
|
|
<date>2004-05-20</date>
|
|
<initials>psa</initials>
|
|
<remark>Changed <length/> datatype from xs:duration to xs:unsignedShort.</remark>
|
|
</revision>
|
|
<revision>
|
|
<version>0.6</version>
|
|
<date>2004-04-25</date>
|
|
<initials>psa</initials>
|
|
<remark>Corrected several errors; added reference to XEP-0033.</remark>
|
|
</revision>
|
|
<revision>
|
|
<version>0.5</version>
|
|
<date>2004-02-19</date>
|
|
<initials>psa</initials>
|
|
<remark>Reverted from infobits to tune elements.</remark>
|
|
</revision>
|
|
<revision>
|
|
<version>0.4</version>
|
|
<date>2003-12-14</date>
|
|
<initials>psa</initials>
|
|
<remark>Slight modifications to track changes to infobits specifications.</remark>
|
|
</revision>
|
|
<revision>
|
|
<version>0.3</version>
|
|
<date>2003-10-23</date>
|
|
<initials>psa</initials>
|
|
<remark>Replaced tune elements with infobits.</remark>
|
|
</revision>
|
|
<revision>
|
|
<version>0.2</version>
|
|
<date>2003-09-10</date>
|
|
<initials>psa</initials>
|
|
<remark>Added "stop" function via empty <tune/> element.</remark>
|
|
</revision>
|
|
<revision>
|
|
<version>0.1</version>
|
|
<date>2003-09-08</date>
|
|
<initials>psa</initials>
|
|
<remark>Initial version.</remark>
|
|
</revision>
|
|
</header>
|
|
<section1 topic='Introduction' anchor='intro'>
|
|
<p>This document defines a protocol for communicating information about the music to which a user is listening. Such information may be seen as a kind of "extended presence", and users may want to communicate such information to their contacts on the network as a fun add-on to traditional IM applications or to provide integration with common music-player applications.</p>
|
|
</section1>
|
|
<section1 topic='Protocol' anchor='protocol'>
|
|
<section2 topic='Container Element and Child Elements' anchor='protocol-elements'>
|
|
<p>Information about tunes is provided by the user and propagated on the network by the user's client. The information container for tune data is a <tune/> element that is qualified by the 'http://jabber.org/protocol/tune' namespace. The tune information itself is provided as the XML character data of the following children of the <tune/> element:</p>
|
|
<table caption='Child Elements'>
|
|
<tr>
|
|
<th>Element</th>
|
|
<th>Description</th>
|
|
<th>Example</th>
|
|
<th>Datatype</th>
|
|
</tr>
|
|
<tr>
|
|
<td>artist</td>
|
|
<td>The artist or performer of the song or piece</td>
|
|
<td>Yes</td>
|
|
<td>xs:string</td>
|
|
</tr>
|
|
<tr>
|
|
<td>title</td>
|
|
<td>The title of the song or piece</td>
|
|
<td>Heart of the Sunrise</td>
|
|
<td>xs:string</td>
|
|
</tr>
|
|
<tr>
|
|
<td>source</td>
|
|
<td>The collection (e.g., album) or other source (e.g., a band website that hosts streams or audio files)</td>
|
|
<td>Yessongs</td>
|
|
<td>xs:string</td>
|
|
</tr>
|
|
<tr>
|
|
<td>track</td>
|
|
<td>A unique identifier for the tune; e.g., the track number within a collection or the specific URI for the object (e.g., a stream or audio file)</td>
|
|
<td>3</td>
|
|
<td>xs:string</td>
|
|
</tr>
|
|
<tr>
|
|
<td>length</td>
|
|
<td>The duration of the song or piece in seconds</td>
|
|
<td>686</td>
|
|
<td>xs:unsignedShort</td>
|
|
</tr>
|
|
</table>
|
|
<p>NOTE: The datatypes specified above are defined in &w3xmlschema2;.</p>
|
|
</section2>
|
|
<section2 topic='Transport Mechanism' anchor='protocol-transport'>
|
|
<p>Tune information SHOULD be communicated and transported by means of the &xep0060; protocol. Because tune information is not pure presence information and can change independently of the user's availability, it SHOULD NOT be provided as an extension to &PRESENCE;.</p>
|
|
<example caption='User Publishes Tune Information'><![CDATA[
|
|
<iq type='set'
|
|
from='stpeter@jabber.org/work'
|
|
to='pubsub.jabber.org'
|
|
id='tunes123'>
|
|
<pubsub xmlns='http://jabber.org/protocol/pubsub'>
|
|
<publish node='generic/tunes/stpeter@jabber.org'>
|
|
<item id='current'>
|
|
<tune xmlns='http://jabber.org/protocol/tune'>
|
|
<artist>Yes</artist>
|
|
<title>Heart of the Sunrise</title>
|
|
<source>Yessongs</source>
|
|
<track>3</track>
|
|
<length>686</length>
|
|
</tune>
|
|
</item>
|
|
</publish>
|
|
</pubsub>
|
|
</iq>
|
|
]]></example>
|
|
<p>The tune information is then delivered to all subscribers:</p>
|
|
<example caption='Tune Information is Delivered to All Subscribers'><![CDATA[
|
|
<message
|
|
from='pubsub.jabber.org'
|
|
to='maineboy@jabber.org'>
|
|
<event xmlns='http://jabber.org/protocol/pubsub#event'>
|
|
<items node='generic/tunes/stpeter@jabber.org'>
|
|
<item id='current'>
|
|
<tune xmlns='http://jabber.org/protocol/tune'>
|
|
<artist>Yes</artist>
|
|
<title>Heart of the Sunrise</title>
|
|
<source>Yessongs</source>
|
|
<track>3</track>
|
|
<length>686</length>
|
|
</tune>
|
|
</item>
|
|
</items>
|
|
</event>
|
|
</message>
|
|
.
|
|
.
|
|
.
|
|
]]></example>
|
|
<p>As mentioned in XEP-0060, the stanza containing the event notification or payload MAY also include 'replyto' data (as specified by the &xep0033; protocol) to provide an explicit association between the published data and the user:</p>
|
|
<example caption="Event notification with extended stanza addressing"><![CDATA[
|
|
<message
|
|
from='pubsub.jabber.org'
|
|
to='maineboy@jabber.org'>
|
|
<event xmlns='http://jabber.org/protocol/pubsub#event'>
|
|
<items node='generic/tunes/stpeter@jabber.org'>
|
|
<item id='current'>
|
|
<tune xmlns='http://jabber.org/protocol/tune'>
|
|
<artist>Yes</artist>
|
|
<title>Heart of the Sunrise</title>
|
|
<source>Yessongs</source>
|
|
<track>3</track>
|
|
<length>686</length>
|
|
</tune>
|
|
</item>
|
|
</items>
|
|
</event>
|
|
<addresses xmlns='http://jabber.org/protocol/address'>
|
|
<address type='replyto' jid='juliet@capulet.com'/>
|
|
</addresses>
|
|
</message>
|
|
]]></example>
|
|
<p>Naturally, further extensions could be included, e.g., using &xep0066; to specify a URL where one could buy the recording.</p>
|
|
<example caption="Tune info with URL"><![CDATA[
|
|
<message
|
|
from='pubsub.jabber.org'
|
|
to='maineboy@jabber.org'>
|
|
<event xmlns='http://jabber.org/protocol/pubsub#event'>
|
|
<items node='generic/tunes/stpeter@jabber.org'>
|
|
<item id='current'>
|
|
<tune xmlns='http://jabber.org/protocol/tune'>
|
|
<artist>Yes</artist>
|
|
<title>Heart of the Sunrise</title>
|
|
<source>Yessongs</source>
|
|
<track>3</track>
|
|
<length>686</length>
|
|
<x xmlns='jabber:x:oob'>
|
|
<url>http://www.amazon.com/exec/obidos/ASIN/B000002J1Y</url>
|
|
</x>
|
|
</tune>
|
|
</item>
|
|
</items>
|
|
</event>
|
|
</message>
|
|
]]></example>
|
|
</section2>
|
|
<section2 topic='Stop Command' anchor='protocol-stop'>
|
|
<p>In order to indicate that the user is no longer listening to any tunes, the user's client SHOULD send an empty <tune/> element, which can be considered a "stop command" for user tunes:</p>
|
|
<example caption='User Publishes "Stop Playing" Information'><![CDATA[
|
|
<iq type='set'
|
|
from='stpeter@jabber.org/work'
|
|
to='pubsub.jabber.org'
|
|
id='tunes345'>
|
|
<pubsub xmlns='http://jabber.org/protocol/pubsub'>
|
|
<publish node='generic/tunes/stpeter@jabber.org'>
|
|
<item id='current'>
|
|
<tune xmlns='http://jabber.org/protocol/tune'/>
|
|
</item>
|
|
</publish>
|
|
</pubsub>
|
|
</iq>
|
|
]]></example>
|
|
<example caption='Empty Tune Information is Delivered to All Subscribers'><![CDATA[
|
|
<message
|
|
from='pubsub.jabber.org'
|
|
to='maineboy@jabber.org'>
|
|
<event xmlns='http://jabber.org/protocol/pubsub#event'>
|
|
<items node='generic/tunes/stpeter@jabber.org'>
|
|
<item id='current'>
|
|
<tune xmlns='http://jabber.org/protocol/tune'/>
|
|
</item>
|
|
</items>
|
|
</event>
|
|
</message>
|
|
.
|
|
.
|
|
.
|
|
]]></example>
|
|
</section2>
|
|
</section1>
|
|
<section1 topic='Implementation Notes' anchor='impl'>
|
|
<p>To prevent a large number of updates when a user is skipping through tracks, an implementation may wait several seconds before publishing new tune information.</p>
|
|
<p>If the length is unknown (e.g., the user is listening to a stream), the <length/> element SHOULD NOT be included.</p>
|
|
</section1>
|
|
<section1 topic='Security Considerations' anchor='security'>
|
|
<p>This protocol introduces no security considerations above and beyond those defined in <cite>Publish-Subscribe</cite> (XEP-0060).</p>
|
|
</section1>
|
|
<section1 topic='IANA Considerations' anchor='iana'>
|
|
<p>This document requires no interaction with &IANA;.</p>
|
|
</section1>
|
|
<section1 topic='XMPP Registrar Considerations' anchor='registrar'>
|
|
<section2 topic='Protocol Namespaces' anchor='registrar-ns'>
|
|
<p>The ®ISTRAR; includes 'http://jabber.org/protocol/tune' in its registry of protocol namespaces.</p>
|
|
</section2>
|
|
</section1>
|
|
<section1 topic='XML Schema' anchor='schema'>
|
|
<code><![CDATA[
|
|
<?xml version='1.0' encoding='UTF-8'?>
|
|
|
|
<xs:schema
|
|
xmlns:xs='http://www.w3.org/2001/XMLSchema'
|
|
targetNamespace='http://jabber.org/protocol/tune'
|
|
xmlns='http://jabber.org/protocol/tune'
|
|
elementFormDefault='qualified'>
|
|
|
|
<xs:annotation>
|
|
<xs:documentation>
|
|
The protocol documented by this schema is defined in
|
|
XEP-0118: http://www.xmpp.org/extensions/xep-0118.html
|
|
</xs:documentation>
|
|
</xs:annotation>
|
|
|
|
<xs:element name='tune'>
|
|
<xs:complexType>
|
|
<xs:sequence minOccurs='0'>
|
|
<xs:element name='artist' type='xs:string' minOccurs='0'/>
|
|
<xs:element name='title' type='xs:string' minOccurs='0'/>
|
|
<xs:element name='source' type='xs:string' minOccurs='0'/>
|
|
<xs:element name='track' type='xs:string' minOccurs='0'/>
|
|
<xs:element name='length' type='xs:unsignedShort' minOccurs='0'/>
|
|
</xs:sequence>
|
|
</xs:complexType>
|
|
</xs:element>
|
|
|
|
</xs:schema>
|
|
]]></code>
|
|
</section1>
|
|
</xep>
|