Xmpp
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Extensible Messaging and Presence Protocol
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Xmpp
- 1. Mahdi Ataeyan Extensible Messaging and Presence Protocol http://www.ataeyan.com
- 6. Why XMPP? ● HTTP API ● http polling ● real time ● Channel encryption ● Authentication ● Presence ● Contact lists (roster) ● Multi-party messaging (room configuration, in-room voting) ● Notifications (one-to-many) ● Service discovery (features support entity)
- 9. usage ● near real-time, instant messaging ● Group chat ● publish-subscribe systems ● signalling for VoIP, video, file transfer ● Multi user Gaming ● Internet of Things m2m communication ● social networking services
- 10. usage ● System control, alerts, notifications ● Geolocation ● Middleware and cloud computing ● Intelligent workflows ● Real-time collaboration ● Data syndication ● Voice over IP ● Identity services
- 13. Service A Service B DB XMPP server Web server XMPP server DB Web server XMPP S2S HTTP HTTP
- 21. Federation
- 24. Server Server Server to Server Server
- 27. XMPP messages ● Message ● i.q. or identification query ● Presence
- 29. jingle ● Jingle is an extension to the XMPP ● adds P2P session control (signaling) for multimedia interactions such as in VoIP or videoconferencing communications ● designed by Google and the XMPP Standards Foundation ● The multimedia streams are delivered using the Real-time Transport Protocol (RTP). ● NAT traversal is assisted using Interactive Connectivity Establishment (ICE).
- 30. NAT Traversal ● Universal Plug and Play (UpnP) ● Simple Traversal of UDP through Network Address Translators (STUN) ● Application Layer Gateway (ALG) ● Manual Settings ● Tunneling ● Proxy Server
- 31. DNS SRV
- 32. Push-Server push
- 34. Http Polling HTTP long-polling Http Streaming WebSockets Uni-directional Bi-direcitonal
- 36. Pub-sub
Editor's Notes
- Xmpp یک پروتکل باز است که بوسیله بنیاد real-time communication Jabber
- پروتوکل پیامرسانی و حضور گسترشپذیر
- Is the entity online and available for communication, or offline and not available?
- Real time
- Channel encryption Authentication
- Federating Social Networks
- Point-to-point Publish/Subscribe Message is broadcasted to all consumers
- geolocation
- Xmpp in cloudcomputing
- Jabber ID JID
- Message can also contain audio, flickr enclosures or location Iq: for subscribing, unsubscribing and error messages Presence online, offline, busy
- an extension to the XMPP adds P2P session control (signaling) for multimedia interactions such as in Voice over IP (VoIP) or videoconferencing communications designed by Google and the XMPP Standards Foundation The multimedia streams are delivered using the Real-time Transport Protocol (RTP)
- NAT traversal is of importance for peer-to-peer and Voice over IP (VoIP) deployments Many techniques exist, but no single method works in every situation since NAT behavior is not standardized. Many NAT traversal techniques require assistance from a server at a publicly routable IP address. Some methods use the server only when establishing the connection, while others are based on relaying all data throug
- sender initiates the data transfer rather than the recipient
- client/server model Web client is always the initiator of transactions In http polling: A connection is held open between the web client and the web server so that when the server has new information it can push it to the client. That connection is then closed. A new connection is then established between the client and the server and then wait for another update from the server.
- Bidirectional-streams Over Synchronous HTTP (BOSH) is a transport protocol that emulates a bidirectional stream between two entities (such as a client and a server) by using multiple synchronous HTTP request/response pairs without requiring the use of polling or asynchronous chunking.
- In software architecture, publish–subscribe is a messaging pattern where senders of messages, called publishers, do not program the messages to be sent directly to specific receivers, called subscribers. Instead, published messages are characterized into classes, without knowledge of what, if any, subscribers there may be. Similarly, subscribers express interest in one or more classes, and only receive messages that are of interest, without knowledge of what, if any, publishers there are.