prosody
cfeb0077c9e9
spec/scansion/basic_message.scs

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spec/scansion/basic_message.scs @ 10571:cfeb0077c9e9

net.server_epoll: Avoid concatenating buffer with single item Saves creating a string that'll be identical to buffer[1] anyways, as well as a C function call. Depending on Lua version and length of the string, this could be reusing an interned string, but a longer one would probably be duplicated for no reason. Having exactly one item in the buffer seems like it would be fairly common, but I have not done an extensive study. If opportunistic writes are enabled then it will be even more likely. This special case could be optimized like this in table.concat but it does not look like it is.
author Kim Alvefur <zash@zash.se>
date Sat, 28 Dec 2019 06:18:58 +0100
parent 10515:35bf3b80480f
line wrap: on
line source

# Basic message routing and delivery

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

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

[Client] Juliet's phone
	jid: juliet@localhost
	password: password
	resource: mobile

---------

# Act 1, scene 1
# The clients connect

Romeo connects

Juliet connects

Juliet's phone connects

# Romeo publishes his presence. Juliet has not, and so does not receive presence.

Romeo sends:
	<presence/>

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

# Romeo sends a message to Juliet's full JID

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

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

# Romeo sends a message to Juliet's phone

Romeo sends:
	<message to="${Juliet's phone's full JID}" type="chat">
		<body>Hello Juliet, on your phone.</body>
	</message>

Juliet's phone receives:
	<message to="${Juliet's phone's full JID}" from="${Romeo's full JID}" type="chat">
		<body>Hello Juliet, on your phone.</body>
	</message>

# Scene 2
# This requires the server to support offline messages (which is optional).

# Romeo sends a message to Juliet's bare JID. This is not immediately delivered, as she
# has not published presence on either of her resources.

Romeo sends:
	<message to="juliet@localhost" type="chat">
		<body>Hello Juliet, are you there?</body>
	</message>

# Juliet sends presence on her phone, and should receive the message there

Juliet's phone sends:
	<presence/>

Juliet's phone receives:
	<presence/>

Juliet's phone receives:
	<message from="${Romeo's full JID}" type="chat">
		<body>Hello Juliet, are you there?</body>
		<delay xmlns='urn:xmpp:delay' from='localhost' stamp='{scansion:any}' />
	</message>

# Romeo sends another bare-JID message, it should be delivered
# instantly to Juliet's phone

Romeo sends:
	<message to="juliet@localhost" type="chat">
		<body>Oh, hi!</body>
	</message>

Juliet's phone receives:
	<message from="${Romeo's full JID}" type="chat">
		<body>Oh, hi!</body>
	</message>

# Juliet's laptop goes online, but with a negative priority

Juliet sends:
	<presence>
		<priority>-1</priority>
	</presence>

Juliet receives:
	<presence from="${Juliet's full JID}">
		<priority>-1</priority>
	</presence>

Juliet's phone receives:
	<presence from="${Juliet's full JID}">
		<priority>-1</priority>
	</presence>

# Again, Romeo sends a message to her bare JID, but it should
# only get delivered to her phone:

Romeo sends:
	<message to="juliet@localhost" type="chat">
		<body>How are you?</body>
	</message>

Juliet's phone receives:
	<message from="${Romeo's full JID}" type="chat">
		<body>How are you?</body>
	</message>

# Romeo sends direct to Juliet's full JID, and she should receive it

Romeo sends:
	<message to="${Juliet's full JID}" type="chat">
		<body>Are you hiding?</body>
	</message>

Juliet receives:
	<message from="${Romeo's full JID}" type="chat">
		<body>Are you hiding?</body>
	</message>

# Juliet publishes non-negative presence

Juliet sends:
	<presence/>

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

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

# And now Romeo's bare JID messages get delivered to both resources
# (server behaviour may vary here)

Romeo sends:
	<message to="juliet@localhost" type="chat">
		<body>There!</body>
	</message>

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

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

# The End

Romeo disconnects

Juliet disconnects

Juliet's phone disconnects