The Web of ThingsIn practice…

Synetgies Zurich, 5.03.2009Dominique Guinard, ETH Zurich

www.guinard.org

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Not so WoT yet..

HTTP? URI?

Browser?

HTTP? URI?

Browser?

Synetgies Zurich, 05.03.2009 Dominique Guinard, ETH Zurich, webofthings.com 2

Say Hi! to the Web of Things

IPv6(lowpan)

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Web CloudWeb Cloud

ComposeCompose VisualizeVisualizeSearchSearch PhysicalMashups

Smart GatewaySmart Gateway

RESTful API

BTBT ZigbeeZigbee ……API1 API2

Web CloudWeb Cloud

ComposeCompose VisualizeVisualizeSearchSearch PhysicalMashups

Web Server

RESTful APIWeb ServerRESTful API

Web ServerEventing

RESTful Thinking (Hype?)SOA WS-* Approach• HTTP as transporter.• The comp-comp interface is

a WSDL.• User Interface?• Testing: stub generation from

a WSDL and lots of SOAP messages.

• SOA loves XML.• An App Server everywhere.• Heavy.• Through the Web.

ROA REST Approach• HTTP as service platform!• The comp-comp interface is

the URL.• The UI is the URL/browser.• Testing by typing a URL in

your browser (doable?)

• ROA loves JSON.• A Web Server everywhere.• Less heavy.• The WEB!

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Hardware / Software

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RESTful Gateway

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Talk to devices: The WEB Way

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Enable Real-World Mashups

URL

URL

URL

URL

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GWT Interface

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Ambient Energy in 30 Minutes

Dominique Guinard, Vlad Trifa, Thomas Pham

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Great work! But so what?Energy• People want easy and fancy

energy monitoring tools.• The deployment seemed to

influence the office workers.• Could be a product soon

(CurrentCost, etc.).

Architecture• For an Internet of Things,

SOA is not always the right approach:

• The Web of Things alternative seems quite interesting:– Good for ad-hoc, tactical

applications.– Mashup physical devices.– Services become a part of the

web, of the cloud.

Synetgies Zurich, 05.03.2009 11Dominique Guinard, ETH Zurich, webofthings.com