prosody
affaf6d08d26
spec/scansion/lastactivity.scs

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spec/scansion/lastactivity.scs @ 13186:affaf6d08d26

util.datamanager: Pad list writes to avoid crossing block boundaries By padding items so that they do not cross block boundaries, it becomes eaiser to delete whole blocks with fallocate() without cutting items in half, improving efficiency of such operations. Since list stores are used for message archives, where the most common deletion operation would be of the oldest entires, at the top of the file. With this, all blocks that contain items to be removed could be deleted without needing to read, delete and write out the whole file.
author Kim Alvefur <zash@zash.se>
date Wed, 07 Jun 2023 00:39:30 +0200
parent 10732:f5d88ad24b30
child 13405:c8f3cfe59e90
line wrap: on
line source

# XEP-0012: Last Activity / mod_lastactivity

[Client] Romeo
	jid: romeo@localhost
	password: password

-----

Romeo connects

Romeo sends:
	<presence>
		<status>Hello</status>
	</presence>

Romeo receives:
	<presence from="${Romeo's full JID}">
		<status>Hello</status>
	</presence>

Romeo sends:
	<presence type="unavailable">
		<status>Goodbye</status>
	</presence>

Romeo receives:
	<presence from="${Romeo's full JID}" type="unavailable">
		<status>Goodbye</status>
	</presence>

# mod_lastlog saves time + status message from the last unavailable presence

Romeo sends:
	<iq id='a' type='get'>
		<query xmlns='jabber:iq:last'/>
	</iq>

Romeo receives:
	<iq type='result' id='a'>
		<query xmlns='jabber:iq:last' seconds='0'>Goodbye</query>
	</iq>

Romeo disconnects

# recording ended on 2020-04-20T14:39:47Z