jabber, the real-time internet, and you peter saint-andre
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Jabber, the Real-Time Internet, and You Peter Saint-Andre. About Me. Executive Director, XMPP Standards Foundation Maintainer, Jabber community Editor, XMPP RFCs Author, ~50 XMPP extensions Blogging at . - PowerPoint PPT PresentationTRANSCRIPT
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Jabber, the Real-Time Internet, and
YouPeter Saint-Andre
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About Me
•Executive Director, XMPP Standards Foundation <http://xmpp.org/>
•Maintainer, Jabber community <http://www.jabber.org/>
•Editor, XMPP RFCs
•Author, ~50 XMPP extensions
•Blogging at <https://stpeter.im/>
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Message + Reply,London to Calcutta•1800: 2 years (sailing ship)
•1914: 1 month (steamship)
•1950: 1 week (air mail)
•1980: 2 days (overnight mail)
•1993: 10 minutes (commercial email)
•1999: 1 second (instant messaging)
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What it Means
•The half-life of information is shrinking
•We need to build a more real-time Internet
•We need to deliver information just-in-time, when and where it is needed
•We need to know when people, devices, and applications are online (“presence”)
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Why Presence?
•A dial-tone for the real-time Internet
•A catalyst for communication
•Basic: network availability
•Advanced: identity, activity, mood, location, capabilities, etc.
•Not just people, also devices & applications
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What is Jabber?
•A set of open XML technologies for...
•Real-time messaging
•Presence
•Multimedia negotiation
•Structured information exchange
•And more...
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Jabber Technologies
•Extensible: streaming XML over TCP
•Open: not patent-encumbered, many open-source implementations
•Standard: formalized via IETF as XMPP (Extensible Messaging & Presence Protocol)
•Secure: TLS/SSL, SASL authentication, etc.
•Decentralized: domain-based routing
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Jabber History•1999: initial release by Jeremie
Miller
•2000: stability for core technology
•2001: Jabber Software Foundation
•2002: XMPP WG @ IETF
•2004: XMPP RFCs published
•2005: Google Talk service
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Technology Ecosystem
•Multiple server codebases
•IM clients for every platform
•Code libraries for every language
•Open, standard protocols
•No license restrictions (open source, commercial, freeware, shareware, etc.)
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Distributed Network
•Client-server architecture
•Inter-domain messaging (like email)
•50+ million end users
•100k+ deployed servers
•All numbers are approximate -- how many email users/servers are there?
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Serious Deployment
•Services: Google Talk, Live Journal, GMX, NTT, Portugal Telecom, BellSouth, etc.
•Enterprises: HP, EDS, FedEx, Oracle, Sun, most Wall Street banks, etc.
•Government: DISA approved, SIPRnet, etc.
•Universities: MIT, Penn, Duke, Wisconsin, etc.
•Web 2.0: Twitter, Jaiku, Joost, OLPC, etc.
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Developer Freedom
•Run your own server
•Write your own components
•Integrate with existing systems
•Mix and match open-source & commercial
•Design your own extensions (it’s just XML)
•Build your own real-time applications
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Interoperability?•Core protocols defined in RFCs: XML
streaming, security, messaging, presence
•XMPP extensions (XEP series) defined by XMPP Standards Foundation
•Strong commitment to interoperability and common standards in developer community
•No vendor lock-in!
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What You Get
•Jabber server = XML router + presence engine
•Application server for the real-time Internet
•Much more than just IM
•Extensibility via XML
•[insert your XML format here]
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Basic Applications•IM and group chat
•Just teen chat, right? Wrong!
•Trading desks on Wall Street
•Incident rooms among first responders
•Chat rooms for military comms
•Expert support (e.g., qunu.com)
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Consumer Applications
•Shared browsing (e.g., me.dium)
•Gaming (e.g., ChessPark)
•Micro-blogging / RSS+Atom notifications (Twitter, Jaiku, etc.)
•Whiteboarding (Inkscape, etc.)
•IP TV (Joost)
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Enterprise Applications
•Financial modeling (RSS to spreadsheet cells)
•Geolocation (e.g., trakm8)
•Workflow processing / supply chain management (e.g., Reynolds & Reynolds)
•Energy trading (e.g., Netenergy)
•Network management (e.g., Oracom)
•Collaborative data objects
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Multimedia Applications
•Negotiate session parameters via XMPP
•Exchange media out of band
•Google Talk / Jingle
•Nokia 770/800, OLPC, FreeSwitch, etc.
•Asterisk federation
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How It Works•Client opens XML stream to server
via TCP on port 5222
•Client authenticates with server
•Client sends unlimited number of XML “stanzas”
•Server may open streams to other servers for dynamic inter-domain federation
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Smart Connections•HTTP “streaming” method similar to
Comet model (no long-lived TCP connection)
•Link-local messaging via zero-configuration networking (Apple Bonjour, OLPC)
•Stream compression results in significant bandwidth savings (up to 90%)
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Security
•Transport Layer Security (TLS) for channel encryption
•Simple Authentication & Security Layer (SASL) for authentication (DIGEST-MD5, Kerberos, X.509 certificates, etc.)
•Server dialback to discourage address spoofing, server certs for strong identity
•S/MIME or PGP for end-to-end encryption
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Look Ma, No Spam
•Domain spoofing is difficult
•Pure XML not friendly to malware
•XHTML subset (no scripts or images)
•Preventive measures defined if spam appears
•Exploring reputation system for servers
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Internationalization
•Full Unicode addresses -- not limited to ASCII
•All XML traffic is UTF-8 encoded
•Multiple languages via xml:lang
•Real-time translation protocol under development (US JFCOM)
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Group Chat
•Chat rooms -- similar to IRC channels
•Room acts as reflector for message and presence traffic
•Defined in XEP-0045
•Very popular in financial and military deployments
•Working on distributed rooms
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Service Discovery
•Easy to locate services on the network (XEP-0030)
•No “crawlers” or directory services yet, but needed
•Dynamic capabilities discovery and notification via presence (XEP-0115)
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Personal Eventing•Ability to use IM account as locus for
notifications
•Any XML payload: activity, location, mood, tune, gaming, browsing, blogging, etc.
•Generalized publish-subscribe services for people, devices, and applications (XEP-0060)
•Real-time RSS and Atom feeds
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Jingle•Flexible framework for management
of multimedia sessions (XEP-0166)
•Signalling via XMPP, media out of band
•Pluggable transports (ICE-UDP, ICE-TCP, direct UDP, etc.)
•Pluggable media types (voice, video, file sharing, etc.)
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Current Focus
•RFC revisions
•Finalizing Jingle for VoIP
•Wide deployment of personal eventing
•Shared XML editing / whiteboarding
•Further spam prevention techniques
•Improved security (end-to-end encryption)
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Get Started
•Download a client
•Create a free account
•Run your own server
•Connect to the network (or not!)
•Build real-time applications
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Why XMPP Matters
•Freedom of conversation
•Not proprietary technologies
•Open IETF/XSF standards
•Innovate at the edges
•Build competitive advantage
•Build the real-time Internet
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Join the Conversation
•Active developer community <http://planet.jabber.org/>
•Lots of open-source projects <http://www.jabber.org/>
•Developer-friendly standards process <http://www.xmpp.org/>
•Contact me directly<http://stpeter.im/>