Why is it important?

Fundamentals

Stanzas

...are snippets of XML

There are three types:
<message/>, <presence/>, & <iq/>

The JID

[user@] example.org [/mobile-phone]

• local: The user/device (i.e. client)
• domain: Server you are addressing
• resource: Multiple connections?

Clients

Thin clients, leave the work to the server

Connect over TCP/BOSH (Long polling)/WebSockets

Data is pushed to clients, clients push data

Servers

Routes messages

Allow users to talk across servers

Handles authentication and security

Components

Custom business logic

Server agnostic

See node-xmpp-component