prosody
39991e40d1dc
spec/scansion/blocking.scs

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Software / code / prosody

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spec/scansion/blocking.scs @ 10973:39991e40d1dc

util.dbuffer: dynamic string buffer Similar to util.ringbuffer (and shares almost identical API). Differences: - size limit is optional and dynamic - does not allocate a fixed buffer of max_size bytes - focus on simply storing references to existing string objects where possible, avoiding unnecessary allocations - references are still stored in a ring buffer to enable use as a fast FIFO Optional second parameter to new() provides the number of ring buffer segments. On Lua 5.2 on my laptop, a segment is ~19 bytes. If the ring buffer fills up, the next write will compact all strings into a single item.
author Matthew Wild <mwild1@gmail.com>
date Fri, 26 Jun 2020 16:41:31 +0100
parent 10812:3bd846c76701
line wrap: on
line source

# XEP-0191: Blocking Command

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

[Client] Juliet
	jid: blockee@localhost
	password: password

-----

# The parties connect
Romeo connects

Romeo sends:
	<presence/>

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

Juliet connects

Juliet sends:
	<presence/>

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

# They add each other
Romeo sends:
	<presence type="subscribe" to="${Juliet's JID}"/>

Romeo receives:
	<presence from="${Juliet's JID}" to="${Romeo's JID}" type="unavailable"/>

Juliet receives:
	<presence type="subscribe" to="${Juliet's JID}" from="${Romeo's JID}"/>

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

Romeo receives:
	<presence from="${Juliet's full JID}" to="${Romeo's JID}">
	  <delay xmlns="urn:xmpp:delay" stamp="{scansion:any}" from="localhost"/>
	</presence>

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

Juliet receives:
	<presence from="${Romeo's JID}" to="${Juliet's JID}" type="unavailable"/>

Romeo receives:
	<presence type="subscribe" to="${Romeo's JID}" from="${Juliet's JID}"/>

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

Juliet receives:
	<presence from="${Romeo's full JID}" to="${Juliet's JID}">
	  <delay xmlns="urn:xmpp:delay" stamp="{scansion:any}" from="localhost"/>
	</presence>

Romeo receives:
	<presence from="${Juliet's full JID}" to="${Romeo's JID}">
	  <delay xmlns="urn:xmpp:delay" stamp="{scansion:any}" from="localhost"/>
	</presence>

# They can now talk
Juliet sends:
	<message type="chat" to="${Romeo's JID}">
	  <body>ohai</body>
	</message>

Romeo receives:
	<message type="chat" to="${Romeo's JID}" from="${Juliet's full JID}">
	  <body>ohai</body>
	</message>

# And now to the blockining

Romeo sends:
	<iq type="set" id="lx2">
	  <block xmlns="urn:xmpp:blocking">
	    <item jid="${Juliet's JID}"/>
	  </block>
	</iq>

Romeo receives:
	<iq type="result" id="lx2"/>

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

# Can"t talk anymore
Romeo sends:
	<message type="chat" to="${Juliet's JID}">
	  <body>hello?</body>
	</message>

Romeo receives:
	<message type="error" from="${Juliet's JID}">
	  <error type="cancel">
	    <not-acceptable xmlns="urn:ietf:params:xml:ns:xmpp-stanzas"/>
	    <text xmlns="urn:ietf:params:xml:ns:xmpp-stanzas">You have blocked this JID</text>
	    <blocked xmlns="urn:xmpp:blocking:errors"/>
	  </error>
	</message>

Juliet sends:
	<message type="chat" to="${Romeo's JID}"/>

Juliet receives:
	<message type="error" from="${Romeo's JID}">
	  <error type="cancel">
	    <service-unavailable xmlns="urn:ietf:params:xml:ns:xmpp-stanzas"/>
	  </error>
	</message>

Romeo sends:
	<iq type="set" id="lx3">
	  <unblock xmlns="urn:xmpp:blocking">
	    <item jid="${Juliet's JID}"/>
	  </unblock>
	</iq>

Juliet receives:
	<presence to="${Juliet's JID}" from="${Romeo's full JID}">
	  <delay xmlns="urn:xmpp:delay" stamp="{scansion:any}" from="localhost"/>
	</presence>

Romeo receives:
	<iq type="result" id="lx3"/>

# Can talk again
Romeo sends:
	<message type="chat" to="${Juliet's JID}">
	  <body>hello!</body>
	</message>

Juliet receives:
	<message type="chat" to="${Juliet's JID}" from="${Romeo's full JID}">
	  <body>hello!</body>
	</message>

# Bye
Juliet sends:
	<presence type="unavailable"/>

Juliet disconnects

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

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

Romeo disconnects