mirror of
https://github.com/moparisthebest/xeps
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247 lines
8.1 KiB
XML
247 lines
8.1 KiB
XML
<?xml version='1.0' encoding='UTF-8'?>
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<!DOCTYPE xep SYSTEM 'xep.dtd' [
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<!ENTITY % ents SYSTEM 'xep.ent'>
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%ents;
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]>
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<?xml-stylesheet type='text/xsl' href='xep.xsl'?>
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<xep>
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<header>
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<title>Extensible Status Conditions for Multi-User Chat</title>
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<abstract>This document defines an extensible format for status conditions in Multi-User Chat, similar to the error format used in the core of XMPP.</abstract>
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&LEGALNOTICE;
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<number>0306</number>
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<status>Deferred</status>
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<type>Standards Track</type>
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<sig>Standards</sig>
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<dependencies>
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<spec>RFC 6120</spec>
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<spec>XEP-0045</spec>
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</dependencies>
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<supersedes/>
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<supersededby/>
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<shortname>N/A</shortname>
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&stpeter;
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<revision>
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<version>0.2</version>
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<date>2011-12-14</date>
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<initials>psa</initials>
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<remark><p>Modified format to make it more backward compatible; incremented protocol namespace.</p></remark>
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</revision>
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<revision>
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<version>0.1</version>
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<date>2011-08-26</date>
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<initials>psa</initials>
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<remark><p>Initial published version.</p></remark>
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</revision>
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<revision>
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<version>0.0.1</version>
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<date>2011-08-12</date>
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<initials>psa</initials>
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<remark><p>Rough draft.</p></remark>
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</revision>
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</header>
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<section1 topic='Introduction' anchor='intro'>
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<p>Traditionally, &xep0045; has used numerical status codes similar to those used in HTTP and SMTP. Numerical codes were deprecated in the core of XMPP by &rfc3920; and are no longer even defined in the core schemas provided in &rfc6120; (see also &xep0086;). In an effort to modernize the Multi-User Chat (MUC) protocol, this document defines an extensible format for status conditions in MUC.</p>
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</section1>
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<section1 topic='Format' anchor='format'>
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<p>XML elements describing status conditions defined by this specification SHALL be qualified by the 'urn:xmpp:muc:conditions:1' namespace.</p>
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<p>The structure is as follows:</p>
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<code><![CDATA[
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<status xmlns='http://jabber.org/protocol/muc#user'>
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<DEFINED-CONDITION>
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[<text xml:lang='langcode'>OPTIONAL descriptive text</text>]
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[OPTIONAL application-specific condition element]
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</DEFINED-CONDITION>
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[<DEFINED-CONDITION/>]
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[OPTIONAL application-specific condition element or elements]
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</status>
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]]></code>
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<p>That is, any <status/> element qualified by the existing http://jabber.org/protocol/muc#user' namespace (from XEP-0045) MAY contain one or more condition elements defined in this document (each of which MAY contain a human-readable <text/> element and MAY contain an application-specific condition element) and MAY contain one or more application-specific condition elements.</p>
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<p>An example follows.</p>
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<example caption="Service Sends New Occupant's Presence to New Occupant"><![CDATA[
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<presence
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from='coven@chat.shakespeare.lit/thirdwitch'
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id='n13mt3l'
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to='hag66@shakespeare.lit/pda'>
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<x xmlns='http://jabber.org/protocol/muc#user'>
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<item affiliation='member' role='participant'/>
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<status code='100'/>
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<realjid-public xmlns='urn:xmpp:muc:conditions:1'/>
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</status>
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<status code='110'/>
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<self-presence xmlns='urn:xmpp:muc:conditions:1'/>
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</status>
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</x>
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</presence>
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]]></example>
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</section1>
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<section1 topic='Mapping of Existing Codes' anchor='mapping'>
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<p>The following table maps the existing numerical status codes (registered with the ®ISTRAR; at &MUCSTATUS;) to XML elements.</p>
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<table caption='Error Codes for http://jabber.org/protocol/muc#user Namespace'>
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<tr>
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<th>Code</th>
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<th>Element</th>
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</tr>
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<tr>
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<td>100</td>
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<td><realjid-public/></td>
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</tr>
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<tr>
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<td>101</td>
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<td><affiliation-changed/></td>
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</tr>
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<tr>
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<td>102</td>
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<td><unavailable-shown/></td>
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</tr>
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<tr>
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<td>103</td>
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<td><unavailable-not-shown/></td>
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</tr>
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<tr>
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<td>104</td>
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<td><configuration-changed/></td>
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</tr>
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<tr>
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<td>110</td>
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<td><self-presence/></td>
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</tr>
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<tr>
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<td>170</td>
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<td><logging-enabled/></td>
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</tr>
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<tr>
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<td>171</td>
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<td><logging-disabled/></td>
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</tr>
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<tr>
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<td>172</td>
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<td><non-anonymous/></td>
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</tr>
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<tr>
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<td>173</td>
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<td><semi-anonymous/></td>
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</tr>
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<tr>
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<td>174</td>
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<td><fully-anonymous/></td>
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</tr>
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<tr>
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<td>201</td>
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<td><room-created/></td>
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</tr>
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<tr>
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<td>210</td>
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<td><nick-assigned/></td>
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</tr>
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<tr>
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<td>301</td>
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<td><banned/></td>
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</tr>
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<tr>
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<td>303</td>
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<td><new-nick/></td>
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</tr>
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<tr>
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<td>307</td>
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<td><kicked/></td>
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</tr>
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<tr>
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<td>321</td>
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<td><removed-affiliation/></td>
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</tr>
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<tr>
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<td>322</td>
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<td><removed-membership/></td>
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</tr>
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<tr>
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<td>332</td>
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<td><removed-shutdown/></td>
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</tr>
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</table>
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</section1>
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<section1 topic='Security Considerations' anchor='security'>
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<p>The security considerations of <cite>XEP-0045</cite> apply.</p>
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</section1>
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<section1 topic='IANA Considerations' anchor='iana'>
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<p>This document requires no interaction with &IANA;.</p>
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</section1>
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<section1 topic='XMPP Registrar Considerations' anchor='registrar'>
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<section2 topic='Protocol Namespaces' anchor='registrar-ns'>
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<p>This specification defines the following XML namespace:</p>
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<ul>
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<li>urn:xmpp:muc:conditions:1</li>
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</ul>
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<p>Upon advancement of this specification from a status of Experimental to a status of Draft, the ®ISTRAR; shall add the foregoing namespace to the registry located at &NAMESPACES;, as described in Section 4 of &xep0053;.</p>
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</section2>
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<section2 topic='Protocol Versioning' anchor='registrar-versioning'>
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&NSVER;
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</section2>
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<section2 topic='MUC Status Codes Registry' anchor='registrar-mucstatus'>
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<p>The XMPP Registrar is requested to add the elements defined in this specification to the existing registry for MUC status codes at &MUCSTATUS;.</p>
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</section2>
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</section1>
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<section1 topic='XML Schema' anchor='schema'>
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<code><![CDATA[
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<?xml version='1.0' encoding='UTF-8'?>
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<xs:schema
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xmlns:xs='http://www.w3.org/2001/XMLSchema'
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targetNamespace='urn:xmpp:muc:conditions:1'
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xmlns='urn:xmpp:muc:conditions:1'
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elementFormDefault='qualified'>
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<xs:element name='affiliation-changed' type='MucStatusType'/>
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<xs:element name='banned' type='MucStatusType'/>
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<xs:element name='configuration-changed' type='MucStatusType'/>
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<xs:element name='fully-anonymous' type='MucStatusType'/>
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<xs:element name='kicked' type='MucStatusType'/>
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<xs:element name='logging-disabled' type='MucStatusType'/>
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<xs:element name='logging-enabled' type='MucStatusType'/>
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<xs:element name='new-nick' type='MucStatusType'/>
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<xs:element name='nick-assigned' type='MucStatusType'/>
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<xs:element name='non-anonymous' type='MucStatusType'/>
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<xs:element name='realjid-public' type='MucStatusType'/>
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<xs:element name='removed-affiliation' type='MucStatusType'/>
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<xs:element name='removed-membership' type='MucStatusType'/>
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<xs:element name='removed-shutdown' type='MucStatusType'/>
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<xs:element name='room-created' type='MucStatusType'/>
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<xs:element name='self-presence' type='MucStatusType'/>
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<xs:element name='semi-anonymous' type='MucStatusType'/>
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<xs:element name='unavailable-not-shown' type='MucStatusType'/>
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<xs:element name='unavailable-shown' type='MucStatusType'/>
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<xs:complexType name='MucStatusType'>
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<xs:sequence>
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<xs:element ref='text'/>
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<xs:any namespace='##other' minOccurs='0' maxOccurs='unbounded' processContents='lax'/>
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</xs:sequence>
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</xs:complexType>
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</xs:schema>
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<xs:element name='text'>
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<xs:complexType>
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<xs:simpleContent>
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<xs:extension base='xs:string'>
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<xs:attribute ref='xml:lang' use='optional'/>
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</xs:extension>
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</xs:simpleContent>
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</xs:complexType>
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</xs:element>
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]]></code>
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</section1>
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<section1 topic='Acknowledgements' anchor='ack'>
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<p>Thanks to Dave Cridland and Ralph Meijer for their feedback.</p>
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</section1>
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</xep>
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