prosody
dcf38ac6a38c
spec/scansion/presence_preapproval.scs

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spec/scansion/presence_preapproval.scs @ 11741:dcf38ac6a38c

net.server: Add a predrain callaback just before writes Allows sneaking in things in the write buffer just before it's sent to the network stack. For example ack requests, compression flushes or other things that make sense to send after stanzas or other things. This ensures any additional trailing data sent is included in the same write, and possibly the same TCP packet. Other methods used such as timers or nextTick might not have the same effect as it depends on scheduling.
author Kim Alvefur <zash@zash.se>
date Mon, 16 Aug 2021 12:34:52 +0200
parent 10515:35bf3b80480f
line wrap: on
line source

# server supports contact subscription pre-approval (RFC 6121 3.4)

[Client] Alice
	jid: preappove-a@localhost
	password: password

[Client] Bob
	jid: preapprove-b@localhost
	password: password

---------

Alice connects

Alice sends:
	<presence/>

Alice receives:
	<presence/>

Alice sends:
	<presence to="${Bob's JID}" type="subscribed"/>

Bob connects

Bob sends:
	<iq type="get" id="roster1">
		<query xmlns="jabber:iq:roster"/>
	</iq>

Bob receives:
	<iq type="result" id="roster1">
		<query xmlns="jabber:iq:roster" ver="{scansion:any}">
		</query>
	</iq>

Bob sends:
	<presence/>

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

Bob sends:
	<presence to="${Alice's JID}" type="subscribe" />

Bob receives:
	<iq type='set' id='{scansion:any}'>
		<query ver='1' xmlns='jabber:iq:roster'>
			<item jid="${Alice's JID}" subscription='none' ask='subscribe' />
		</query>
	</iq>



Bob receives:
	<presence from="${Alice's JID}" type="subscribed" />

Bob disconnects

Alice sends:
	<iq type="get" id="roster1">
		<query xmlns="jabber:iq:roster"/>
	</iq>

Alice receives:
	<iq type="result" id="roster1">
		<query xmlns="jabber:iq:roster" ver="{scansion:any}">
			<item jid="${Bob's JID}" subscription="from" />
		</query>
	</iq>

Alice disconnects

Bob disconnects