This document specifies how to use Message Archive Management (XEP-0313) [1] in combination with Publish-Subscribe (XEP-0060) [2] to host and query archives on pubsub nodes.
When querying a pubsub node's archive, the 'node' attribute is added to the <query> element.
<iq to='pubsub.shakespeare.lit' type='set' id='juliet1'> <query xmlns='urn:xmpp:mam:2' queryid='f28' node='fdp/submitted/capulet.lit/sonnets'/> </iq>
<message id='iasd208' to='juliet@capulet.lit/chamber'>
<result xmlns='urn:xmpp:mam:2' queryid='g28' id='28482-20987-73623'>
<forwarded xmlns='urn:xmpp:forward:0'>
<delay xmlns='urn:xmpp:delay' stamp='2010-07-10T23:08:25Z'/>
<message xmlns="jabber:client">
<event xmlns='http://jabber.org/protocol/pubsub#event'>
<items node='princely_musings'>
<item id='ae890ac52d0df67ed7cfdf51b644e901'>
<entry xmlns='http://www.w3.org/2005/Atom'>
<title>Soliloquy</title>
<summary>
To be, or not to be: that is the question:
Whether 'tis nobler in the mind to suffer
The slings and arrows of outrageous fortune,
Or to take arms against a sea of troubles,
And by opposing end them?
</summary>
<link rel='alternate' type='text/html'
href='http://denmark.lit/2003/12/13/atom03'/>
<id>tag:denmark.lit,2003:entry-32397</id>
<published>2003-12-13T18:30:02Z</published>
<updated>2003-12-13T18:30:02Z</updated>
</entry>
</item>
</items>
</event>
</message>
</forwarded>
</result>
</message>A PubSub service offering MAM SHOULD store each of the items published to each node. When responding to MAM requests it MUST construct the message stanza within the <forwarded> element in the same manner as the notifications sent to subscribers for the item, except that specifying the 'from' 'to' and 'id' attributes are OPTIONAL. Pubsub items must be returned one per message stanza (i.e. there MUST NOT be multiple <item> elements within the <items> element).
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The following requirements keywords as used in this document are to be interpreted as described in RFC 2119: "MUST", "SHALL", "REQUIRED"; "MUST NOT", "SHALL NOT"; "SHOULD", "RECOMMENDED"; "SHOULD NOT", "NOT RECOMMENDED"; "MAY", "OPTIONAL".
1. XEP-0313: Message Archive Management <https://xmpp.org/extensions/xep-0313.html>.
2. XEP-0060: Publish-Subscribe <https://xmpp.org/extensions/xep-0060.html>.
Note: Older versions of this specification might be available at https://xmpp.org/extensions/attic/
Split off from XEP-0313 v0.6.3 to ease advancement of that XEP and allow further clarification and expansion of pubsub use cases.
@report{wild2020pubsub-mam,
title = {Pubsub Message Archive Management},
author = {Wild, Matthew and Smith, Kevin},
type = {XEP},
number = {0442},
version = {0.2.0},
institution = {XMPP Standards Foundation},
url = {https://xmpp.org/extensions/xep-0442.html},
date = {2020-03-30/2020-08-25},
}END