mirror of
https://github.com/moparisthebest/xeps
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571 lines
21 KiB
XML
571 lines
21 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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<!ENTITY component "<note>Support can be enabled via an external component or an internal server module/plugin. If claiming compliance using such an addition, the necessary components/modules/plugins MUST be detailed.</note>">
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<!ENTITY usecases "<note>Support for the Entity Use Cases and Occupant Use Cases is REQUIRED; support for the remaining use cases is RECOMMENDED.</note>">
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<!ENTITY onlyone "<note>Only one of the recommended providers must be implemented for compliance.</note>">
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<!ENTITY nocli "<note>Not required for command line or terminal based interfaces.</note>">
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<!ENTITY avatar "<note>While 'User Avatars' is more modern, 'vCard-Based Avatars' is more widely deployed. Although it is suggested that to maximise interoperability with existing software a client fully supports both it is sufficient to claim compliance with this suite if the support for 'vCard-Based Avatars' is read-only.</note>">
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<!ENTITY pubsubjid "<note>While 'Personal Eventing Protocol' does not require all the features of 'Publish-Subscribe' to be available on the users' JIDs, and nor does this suite, it is desirable for this to be the case and it is expected that this will a requirement of future Compliance Suites.</note>">
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<!ENTITY yes "✓">
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<!ENTITY no "✕">
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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>XMPP Compliance Suites 2021</title>
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<abstract>
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This document defines XMPP application categories for different use cases
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(Core, Web, IM, and Mobile), and specifies the required XEPs that client and
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server software needs to implement for compliance with the use cases.
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</abstract>
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&LEGALNOTICE;
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<number>0443</number>
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<status>Proposed</status>
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<lastcall>2020-11-03</lastcall>
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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>RFC 6121</spec>
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<spec>RFC 7395</spec>
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<spec>RFC 7590</spec>
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<spec>RFC 7622</spec>
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<spec>XEP-0030</spec>
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<spec>XEP-0045</spec>
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<spec>XEP-0048</spec>
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<spec>XEP-0049</spec>
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<spec>XEP-0084</spec>
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<spec>XEP-0085</spec>
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<spec>XEP-0114</spec>
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<spec>XEP-0115</spec>
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<spec>XEP-0124</spec>
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<spec>XEP-0163</spec>
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<spec>XEP-0191</spec>
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<spec>XEP-0198</spec>
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<spec>XEP-0206</spec>
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<spec>XEP-0223</spec>
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<spec>XEP-0249</spec>
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<spec>XEP-0280</spec>
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<spec>XEP-0313</spec>
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<spec>XEP-0352</spec>
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<spec>XEP-0368</spec>
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</dependencies>
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<supersedes>
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<spec>XEP-0423</spec>
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</supersedes>
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<supersededby/>
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<shortname>CS2021</shortname>
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<author>
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<firstname>Georg</firstname>
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<surname>Lukas</surname>
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<email>georg@op-co.de</email>
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<jid>georg@yax.im</jid>
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</author>
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<revision>
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<version>0.2.0</version>
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<date>2020-10-20</date>
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<initials>dg</initials>
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<remark>Added section about A/V calls</remark>
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</revision>
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<revision>
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<version>0.1.0</version>
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<date>2020-10-06</date>
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<initials>XEP Editor (jsc)</initials>
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<remark>Accepted by vote of Council on 2020-09-30.</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>2020-09-02</date>
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<initials>gl</initials>
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<remark>
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<p>First draft based on XEP-0423.</p>
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</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>
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There is a growing number of XMPP Extension Protocols (XEPs) that provide
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different building blocks for XMPP-based applications. XMPP software
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developers are confronted with the challenge of finding the right
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combination of XEPs for a given application profile. Users need a way to
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compare applications without resorting to comparing for individual XEP
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numbers.
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</p>
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<p>
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This document defines XMPP application <strong>Categories</strong> based on
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typical use cases (Core, Web, IM, Mobile) and <strong>Levels</strong>
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(Core, Advanced) based on functionality in the respective category. For
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each combination of those, the required XEPs are referenced. As the
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protocol landscape changes over time, this document is updated roughly
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once a year.
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</p>
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<p>
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For developers, this document provides guidance on which specifications
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they need to consider when implementing an application of a certain kind.
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By completing a compliance test or performing a self-assessment, they can
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advertise their implementation as compliant with a given Category and
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Level.
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</p>
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<p>
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For users, this provides an easy way to compare implementations based on
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their respective advertised compliance levels and year.
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</p>
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<p>
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Unless explicitly noted, support for the listed specifications is REQUIRED
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for compliance purposes.
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A feature is considered supported if all comma separated feature providers
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listed in the "Providers" column are implemented (unless otherwise noted).
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</p>
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<section2 topic='Changes since 2020' anchor='changes-2020'>
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<p>The following changes were made to the Compliance Suites since &xep0423;:</p>
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<ul>
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<li>Introduced new category for <strong>A/V Calling</strong>.</li>
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</ul>
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</section2>
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<section2 topic='Changes since 2019' anchor='changes'>
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<p>The following changes were made to the Compliance Suites since &xep0412;:</p>
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<ul>
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<li>IM Category:
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<ul>
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<li>Core Client: added &xep0245;</li>
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<li>Core Client and Server: added &xep0363;</li>
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<li>Advanced Client: added &xep0234;, &xep0261;</li>
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<li>Advanced Client and Server: added &xep0411;</li>
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<li>Specifications of note: added &xep0077; and &xep0157;, &xep0392;, &xep0066; and &xep0385;</li>
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</ul>
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</li>
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<li>Mobile Category:
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<ul>
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<li>Specifications of note: added &xep0286;</li>
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</ul>
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</li>
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<li>Web Category:
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<ul>
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<li>Advanced Web: added &xep0156;</li>
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</ul>
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</li>
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</ul>
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</section2>
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</section1>
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<section1 topic='Compliance Categories' anchor='categories'>
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<section2 topic='Core Compliance Suite' anchor='core'>
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<table caption='XMPP Core Compliance Levels'>
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<tr>
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<th>Feature</th>
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<th>Core Server</th>
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<th>Core Client</th>
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<th>Advanced Server</th>
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<th>Advanced Client</th>
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<th>Providers</th>
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</tr>
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<tr>
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<td><strong>Core features</strong></td>
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<td align='center'>&yes;</td>
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<td align='center'>&yes;</td>
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<td align='center'>&yes;</td>
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<td align='center'>&yes;</td>
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<td>&rfc6120; <note>&rfc7622; is not listed due to the unclear interoperability impact of using PRECIS and Stringprep in the same ecosystem.</note></td>
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</tr>
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<tr>
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<td><strong>TLS</strong></td>
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<td align='center'>&yes;</td>
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<td align='center'>&yes;</td>
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<td align='center'>&yes;</td>
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<td align='center'>&yes;</td>
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<td>&rfc7590;</td>
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</tr>
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<tr>
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<td><strong>Direct TLS</strong></td>
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<td align='center'>&no;</td>
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<td align='center'>&no;</td>
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<td align='center'>&yes;<note>Server support of XEP-0368 means having the ability to accept direct TLS connections.</note></td>
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<td align='center'>&yes;</td>
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<td>&xep0368;</td>
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</tr>
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<tr>
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<td><strong>Feature discovery</strong></td>
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<td align='center'>&yes;</td>
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<td align='center'>&yes;</td>
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<td align='center'>&yes;</td>
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<td align='center'>&yes;</td>
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<td>&xep0030;</td>
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</tr>
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<tr>
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<td><strong>Feature broadcasts</strong></td>
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<td align='center'>&no;</td>
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<td align='center'>&yes;</td>
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<td align='center'>&yes;</td>
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<td align='center'>&yes;</td>
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<td>&xep0115;</td>
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</tr>
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<tr>
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<td><strong>Server Extensibility</strong></td>
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<td align='center'>&yes;</td>
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<td align='center'>N/A</td>
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<td align='center'>&yes;</td>
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<td align='center'>N/A</td>
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<td>&xep0114;</td>
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</tr>
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<tr>
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<td><strong>Event publishing</strong></td>
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<td align='center'>&no;</td>
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<td align='center'>&no;</td>
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<td align='center'>&yes;&pubsubjid;</td>
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<td align='center'>&yes;</td>
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<td>&xep0163;</td>
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</tr>
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</table>
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</section2>
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<section2 topic='Web Compliance Suite' anchor='web'>
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<p>
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To be considered XMPP web compliant, all features from the core
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compliance category must be met, as well as all features in this suite.
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</p>
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<table caption='XMPP Web Compliance Levels'>
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<tr>
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<th>Feature</th>
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<th>Core Server</th>
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<th>Core Client</th>
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<th>Advanced Server</th>
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<th>Advanced Client</th>
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<th>Providers</th>
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</tr>
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<tr>
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<td><strong>Web Connection Mechanisms</strong></td>
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<td align='center'>&yes;&component;</td>
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<td align='center'>&yes;&onlyone;</td>
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<td align='center'>&yes;&component;</td>
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<td align='center'>&yes;&onlyone;</td>
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<td>&rfc7395;, &xep0206; (See also: &xep0124;)</td>
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</tr>
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<tr>
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<td><strong>Connection Mechanism Discovery</strong></td>
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<td align='center'>&no;</td>
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<td align='center'>&no;</td>
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<td align='center'>N/A</td>
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<td align='center'>&yes;</td>
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<td>&xep0156;</td>
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</tr>
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</table>
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</section2>
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<section2 topic='IM Compliance Suite' anchor='im'>
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<p>
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To be considered XMPP IM compliant, all features from the core
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compliance category must be met, as well as all features in this suite.
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</p>
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<table caption='XMPP IM Compliance Levels'>
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<tr>
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<th>Feature</th>
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<th>Core Server</th>
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<th>Core Client</th>
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<th>Advanced Server</th>
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<th>Advanced Client</th>
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<th>Providers</th>
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</tr>
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<tr>
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<td><strong>Core features</strong></td>
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<td align='center'>&yes;</td>
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<td align='center'>&yes;</td>
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<td align='center'>&yes;</td>
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<td align='center'>&yes;</td>
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<td>&rfc6121;</td>
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</tr>
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<tr>
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<td><strong>The /me Command</strong></td>
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<td align='center'>N/A</td>
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<td align='center'>&yes;</td>
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<td align='center'>N/A</td>
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<td align='center'>&yes;</td>
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<td>&xep0245;</td>
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</tr>
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<tr>
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<td><strong>User Avatars</strong></td>
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<td align='center'>N/A</td>
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<td align='center'>&no;</td>
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<td align='center'>N/A</td>
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<td align='center'>&yes;&nocli;</td>
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<td>&xep0084;</td>
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</tr>
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<tr>
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<td><strong>User Avatar Compatibility</strong></td>
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<td align='center'>&no;</td>
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<td align='center'>&no;</td>
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<td align='center'>&yes;</td>
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<td align='center'>&yes;&nocli;</td>
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<td>&xep0398;, &xep0153;</td>
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</tr>
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<tr>
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<td><strong>vcard-temp</strong></td>
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<td align='center'>&yes;</td>
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<td align='center'>&yes;</td>
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<td align='center'>&yes;</td>
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<td align='center'>&yes;</td>
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<td>&xep0054;</td>
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</tr>
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<tr>
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<td><strong>Outbound Message Synchronization</strong></td>
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<td align='center'>&yes;</td>
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<td align='center'>&yes;</td>
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<td align='center'>&yes;</td>
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<td align='center'>&yes;</td>
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<td>&xep0280;</td>
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</tr>
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<tr>
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<td><strong>User Blocking</strong></td>
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<td align='center'>&no;</td>
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<td align='center'>&no;</td>
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<td align='center'>&yes;</td>
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<td align='center'>&yes;</td>
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<td>&xep0191;</td>
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</tr>
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<tr>
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<td><strong>Group Chat</strong></td>
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<td align='center'>&yes;&component;</td>
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<td align='center'>&yes;&usecases;</td>
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<td align='center'>&yes;&component;</td>
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<td align='center'>&yes;&usecases;</td>
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<td>&xep0045;<note>Implementations should take note that future versions of these compliance suites may rely on &xep0369; instead.</note>, &xep0249;</td>
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</tr>
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<tr>
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<td><strong>Advanced Group Chat</strong></td>
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<td align='center'>&no;</td>
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<td align='center'>&no;</td>
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<td align='center'>&yes;&component;</td>
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<td align='center'>&yes;</td>
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<td>&xep0048;, &xep0313;<note>Support for requesting history from a MUC archive as opposed to from the user's account.</note>, &xep0410;, &xep0411;</td>
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</tr>
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<tr>
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<td><strong>Persistent Storage of Private Data via PubSub</strong></td>
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<td align='center'>&no;</td>
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<td align='center'>&no;</td>
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<td align='center'>&yes;&component;</td>
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<td align='center'>&yes;</td>
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<td>&xep0223;</td>
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</tr>
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<tr>
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<td><strong>Private XML Storage</strong></td>
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<td align='center'>&no;</td>
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<td align='center'>&no;</td>
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<td align='center'>&yes;&component;</td>
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<td align='center'>&yes;</td>
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<td>&xep0049; (only recommended for legacy bookmarks support)</td>
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</tr>
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<tr>
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<td><strong>Stream Management</strong></td>
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<td align='center'>&no;</td>
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<td align='center'>&no;</td>
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<td align='center'>&yes;</td>
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<td align='center'>&yes;</td>
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<td>&xep0198;</td>
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</tr>
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<tr>
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<td><strong>Message Acknowledgements</strong></td>
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<td align='center'>N/A</td>
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<td align='center'>&no;</td>
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<td align='center'>N/A</td>
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<td align='center'>&yes;</td>
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<td>&xep0184;</td>
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</tr>
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<tr>
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<td><strong>History Storage / Retrieval</strong></td>
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<td align='center'>&no;</td>
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<td align='center'>&no;</td>
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<td align='center'>&yes;</td>
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<td align='center'>&yes;</td>
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<td>&xep0313;</td>
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</tr>
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<tr>
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<td><strong>Chat States</strong></td>
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<td align='center'>N/A</td>
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<td align='center'>&no;</td>
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<td align='center'>N/A</td>
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<td align='center'>&yes;</td>
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<td>&xep0085;</td>
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</tr>
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<tr>
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<td><strong>Message Correction</strong></td>
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<td align='center'>N/A</td>
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<td align='center'>&no;</td>
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<td align='center'>N/A</td>
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<td align='center'>&yes;</td>
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<td>&xep0308;</td>
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</tr>
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<tr>
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<td><strong>File Upload</strong></td>
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<td align='center'>&yes;&component;</td>
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<td align='center'>&yes;</td>
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<td align='center'>&yes;&component;</td>
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<td align='center'>&yes;</td>
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<td>&xep0363;</td>
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</tr>
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<tr>
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<td><strong>Direct File Transfer</strong></td>
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<td align='center'>N/A</td>
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<td align='center'>&no;</td>
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<td align='center'>N/A</td>
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<td align='center'>&yes;</td>
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<td>&xep0234;, &xep0261;</td>
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</tr>
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</table>
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<p>
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Further specifications of note, which are not required for compliance:
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|
</p>
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<ul>
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<li>For public IM networks: &xep0077; (should be supported, but not enabled in default server configurations) and &xep0157;</li>
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<li>File uploads should be indicated using &xep0066;, optionally also using &xep0385;</li>
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<li>&xep0392; for cross-client consistency of user names</li>
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</ul>
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</section2>
|
|
<section2 topic='Mobile Compliance Suite' anchor='mobile'>
|
|
<p>
|
|
To be considered XMPP mobile compliant, all features from the core
|
|
compliance category must be met, as well as all features in this suite.
|
|
</p>
|
|
<table caption='XMPP Mobile Compliance Levels'>
|
|
<tr>
|
|
<th>Feature</th>
|
|
<th>Core Server</th>
|
|
<th>Core Client</th>
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|
<th>Advanced Server</th>
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|
<th>Advanced Client</th>
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|
<th>Providers</th>
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</tr>
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<tr>
|
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<td><strong>Stream Management</strong></td>
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<td align='center'>&yes;</td>
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<td align='center'>&yes;</td>
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<td align='center'>&yes;</td>
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<td align='center'>&yes;</td>
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<td>&xep0198;</td>
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</tr>
|
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<tr>
|
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<td><strong>Client State Indication</strong></td>
|
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<td align='center'>&yes;</td>
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<td align='center'>&yes;</td>
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<td align='center'>&yes;</td>
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|
<td align='center'>&yes;</td>
|
|
<td>&xep0352;</td>
|
|
</tr>
|
|
<tr>
|
|
<td><strong>Third Party Push Notifications</strong></td>
|
|
<td align='center'>&no;</td>
|
|
<td align='center'>&no;</td>
|
|
<td align='center'>&yes;&component;</td>
|
|
<td align='center'>&yes;<note>Only on platforms that disallow long-lasting background connections.</note></td>
|
|
<td>&xep0357;</td>
|
|
</tr>
|
|
</table>
|
|
<p>
|
|
Further specifications of note, which are not required for compliance:
|
|
</p>
|
|
<ul>
|
|
<li>&xep0286;</li>
|
|
</ul>
|
|
</section2>
|
|
<section2 topic='A/V Calling Compliance Suite' anchor='av'>
|
|
<p>
|
|
To be considered XMPP A/V calling compliant, all features from the core
|
|
compliance category must be met, as well as all features in this suite.
|
|
</p>
|
|
<table caption='A/V Calling Compliance Levels'>
|
|
<tr>
|
|
<th>Feature</th>
|
|
<th>Core Server</th>
|
|
<th>Core Client</th>
|
|
<th>Advanced Server</th>
|
|
<th>Advanced Client</th>
|
|
<th>Providers</th>
|
|
</tr>
|
|
<tr>
|
|
<td><strong>Call Setup</strong></td>
|
|
<td align='center'>N/A</td>
|
|
<td align='center'>&yes;</td>
|
|
<td align='center'>N/A</td>
|
|
<td align='center'>&yes;</td>
|
|
<td>&xep0167;, &xep0353;</td>
|
|
</tr>
|
|
<tr>
|
|
<td><strong>Transport</strong></td>
|
|
<td align='center'>N/A</td>
|
|
<td align='center'>&yes;</td>
|
|
<td align='center'>N/A</td>
|
|
<td align='center'>&yes;</td>
|
|
<td>&xep0176;</td>
|
|
</tr>
|
|
<tr>
|
|
<td><strong>Encryption</strong></td>
|
|
<td align='center'>N/A</td>
|
|
<td align='center'>&yes;</td>
|
|
<td align='center'>N/A</td>
|
|
<td align='center'>&yes;</td>
|
|
<td>&xep0320;</td>
|
|
</tr>
|
|
<tr>
|
|
<td><strong>STUN/TURN server discovery</strong></td>
|
|
<td align='center'>&yes;</td>
|
|
<td align='center'>&yes;</td>
|
|
<td align='center'>&yes;</td>
|
|
<td align='center'>&yes;</td>
|
|
<td>&xep0215;</td>
|
|
</tr>
|
|
<tr>
|
|
<td><strong>Quality and Performance improvements</strong></td>
|
|
<td align='center'>N/A</td>
|
|
<td align='center'>&no;</td>
|
|
<td align='center'>N/A</td>
|
|
<td align='center'>&yes;</td>
|
|
<td>&xep0293;, &xep0294;, &xep0338;, &xep0339;</td>
|
|
</tr>
|
|
</table>
|
|
</section2>
|
|
</section1>
|
|
<section1 topic='Future Development' anchor='future'>
|
|
<p>This section outlines the protocol specifications that are relevant for
|
|
developers, but are not ready yet to be required for Compliance.
|
|
Developers are encouraged to implement those and
|
|
to share their experience and feedback.</p>
|
|
<ul>
|
|
<li>Client connection optimizations: &xep0386; and &xep0409;, maybe also &xep0397;</li>
|
|
<li>&xep0333;</li>
|
|
<li>&xep0369;</li>
|
|
<li>End-to-End Encryption (E2EE): &xep0380; for tagging encrypted messages, &xep0420; to protect all payloads; and also one or multiple of the following for actual encryption:
|
|
<ul>
|
|
<li>&xep0384; and &xep0396;</li>
|
|
<li>&xep0374;</li>
|
|
</ul>
|
|
</li>
|
|
<li>&xep0402; to phase out &xep0048;, &xep0049;, and &xep0411;</li>
|
|
<li>&xep0225; to phase out &xep0114;</li>
|
|
<li>&xep0390; to phase out &xep0115;</li>
|
|
</ul>
|
|
</section1>
|
|
<section1 topic='Implementation Notes' anchor='impl'>
|
|
<p>
|
|
Some of the protocol specifications referenced herein have their own
|
|
dependencies; developers need to consult the relevant specifications for
|
|
further information.
|
|
</p>
|
|
</section1>
|
|
<section1 topic='Security Considerations' anchor='security'>
|
|
<p>
|
|
This document introduces no additional security considerations above and
|
|
beyond those defined in the documents on which it depends.
|
|
</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'>
|
|
<p>This document requires no interaction with the ®ISTRAR;.</p>
|
|
</section1>
|
|
<section1 topic='Acknowledgements' anchor='ack'>
|
|
<p>
|
|
The author would like to thank Guus der Kinderen, Dele Olajide, Marc
|
|
Laporte, Dave Cridland, Daniel Gultsch, Florian Schmaus, Tobias Markmann,
|
|
and Jonas Schäfer for their suggestions.
|
|
</p>
|
|
</section1>
|
|
</xep>
|