jms, websocket, and the internet of things - controlling physical devices on the real time web

© 2013 Kaazing Corporation. All Rights Reserved. 1

Controlling Physical Devices on the Real Time Web

David Witherspoon Prashant Khanal Sep 25, 2013

© 2013 Kaazing Corporation. All Rights Reserved.

About Us

§  Prashant Khanal §  Software Engineer – Kaazing §  [email protected] §  Twitter: @ipras

§  David Witherspoon §  Software Engineer – Kaazing §  [email protected] §  Twitter: @dpwspoon


Demo!


Agenda

§  Requirements for the IoT

§  Creating a reference architecture for IoT

§  Live Demos, Live Demos, Live Demos

§  Source Code, Source Code, Source Code

§  WoT and IoT


Internet of Things

Ubiquitous/Pervasive

Heterogeneous

Highly Interconnected

Event-Driven/Real Time

Identifiable Components

Always On

Scalable

Manageable


Raspberry Pi

Image source: http://www.oracle.com/technetwork/articles/java/raspberrypi-1704896.html


Raspberry Pi Resources

§  RaspberryPi.org

§  Wheezy (OS)

§  Oracle JVM

§  Pi4J (Raspberry Pi Java Library)


Demo!


Demo Setup


Raspberry Pi Controlling the Light Directly


Demo Setup


Raspberry Pi Reading from a Toggle Switch


Demo Setup


Messaging for the IoT

§  Messaging Style

§  Interconnected / Bidirectional

§  Dynamic States (Could be on or off)

§  Messaging Protocol Requirements

§  Identity

§  Data formats

§  Transactions

§  Acknowledgments

§  And more …


Message Systems/Protocols for the IoT

§  Java Message Service (JMS) § Standard messaging API

§ Vendor independent

§ Pub / Sub

§ Loosely Coupled


Controlling the Light Remotely Using Pub-Sub


Demo!


LightJmsTcpController Using JMS to Control a Light


ToggleJmsTcpListener Using JMS to Send Events


Controlling the Light Remotely Using Pub-Sub


Challenges with TCP

§  Isolated networks

§  Firewalls

§  Ports

§  Web browsers


How to Extend This to the Web


Controlling the Light Remotely Using Pub-Sub Over the Web


HTML5 WebSocket: TCP for the Web

§  Standard Protocol (IETF): RFC-6455

§  Standard API:

§  W3C: JavaScript

§  JSR 356: Java EE

§  Single socket, full-duplex

§  Low overhead: <1% of HTTP

§  Low latency: low milliseconds

§  SSL support Full duplex


Protocol Layering

TCP

JMS XMPP AMQP B2B FTP VNC mktdata etc

Browsers, Native Applications and IoT Devices

WebSocket Gateway

Internet

WebSocket Gateway


Controlling the Light Remotely Using Pub-Sub Over the Web


Demo!


WebSocket with Brokers


Internet of Things


Internet of Things == Web of Things


The Architecture


The Web of Things


WebSocket Powering the Web of Things

WS

WS

WS WS WS WS

WS

WS

WS


Extending Protocols to the Web of Things

MQTT/WS

AMQP/WS

JMS/WS STOMP/WS

XMPP/WS


Raspberry Pi Resources

§  RaspberryPi.org

§  http://www.raspberrypi.org/

§  Wheezy (OS)

§  http://www.raspberrypi.org/downloads

§  Oracle JVM on the Pi

§  http://www.oracle.com/technetwork/articles/java/raspberrypi-1704896.html

§  Pi4J (Raspberry Pi Java Library)

§  http://pi4j.com/


Find Out More

§  The Zinger – Blog: §  http://blog.kaazing.com

§  HTML5 Developer Conference §  October 22-23, 2013, San Francisco, Moscone North

§  JMS WebSocket Tutorial §  http://tutorial.kaazing.com

§  More developer content §  http://developer.kaazing.com

§  RC Car / Light and Switch Code §  https://github.com/dpwspoon/kaazingPi

§  The Definitive Guide to HTML5 WebSocket, (Apress, 2013) §  First comprehensive guide on WebSocket

§  Use WSK214 for 40% of the e-book

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The End

jms, websocket, and the internet of things - controlling physical devices on the real time web

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