The Devices Profile for Web Services (DPWS) defines a minimal set of implementation constraints to enable secure web service messaging, discovery, description, and eventing on resource-constrained devices. Its objectives are similar to those of

Universal Plug and Play Universal Plug and Play (UPnP) is a set of networking protocols that permits networked devices, such as personal computers, printers, Internet gateways, Wi-Fi access points and mobile devices to seamlessly discover each other's presence on the ...

(UPnP) but, in addition, DPWS is fully aligned with Web Services technology and includes numerous extension points allowing for seamless integration of device-provided services in enterprise-wide application scenarios.

DPWS standardization

The DPWS specification was initially published in May 2004 and was submitted for standardization to

OASIS In ecology, an oasis (; ) is a fertile area of a desert or semi-desert environment WSDL The Web Services Description Language (WSDL ) is an XML-based interface description language that is used for describing the functionality offered by a web service. The acronym is also used for any specific WSDL description of a web service (also ...

1.1,

XML Schema An XML schema is a description of a type of Extensible Markup Language, XML document, typically expressed in terms of constraints on the structure and content of documents of that type, above and beyond the basic syntactical constraints imposed ...

SOAP Soap is a salt of a fatty acid used in a variety of cleansing and lubricating products. In a domestic setting, soaps are surfactants usually used for washing, bathing, and other types of housekeeping. In industrial settings, soaps are used ...

1.2,

WS-Addressing Web Services Addressing (WS-Addressing) is a specification of transport-neutral mechanism that allows web services to communicate addressing information. It essentially consists of two parts: a structure for communicating a reference to a Web ser ...

, and further comprises WS-MetadataExchange, WS-Transfer, WS-Policy,

WS-Security Web Services Security (WS-Security, WSS) is an extension to SOAP to apply security to Web services. It is a member of the Web service specifications and was published by OASIS. The protocol specifies how integrity and confidentiality can be enfo ...

WS-Discovery Web Services Dynamic Discovery (WS-Discovery) is a technical specification that defines a multicast discovery protocol to locate services on a local network. It operates over TCP and UDP port 3702 and uses IP multicast address or . As the name su ...

and WS-Eventing.

Microsoft Microsoft Corporation is an American multinational corporation, multinational technology company, technology corporation producing Software, computer software, consumer electronics, personal computers, and related services headquartered at th ...

Windows Vista Windows Vista is a major release of the Windows NT operating system developed by Microsoft. It was the direct successor to Windows XP, which was released five years before, at the time being the longest time span between successive releases of ...

and Windows Embedded CE6R2 platforms natively integrate DPWS with a stack called WSDAPI, included as part of the

Windows Rally Windows Rally is a set of technologies from Microsoft intended to simplify the setup and maintenance of wired and wireless network-connected devices. They aim to increase reliability and security of connectivity for users who connect the devices ...

technologies. Support for

OSGi OSGi is an open specification and open source project under the Eclipse Foundation. It is a continuation of the work done by the OSGi Alliance (formerly known as the Open Services Gateway initiative), which was an open standards organization for ...

is on the way.

Use cases

Because DPWS supports dynamic discovery, and is part of the evolving vision of distributed applications that leverage WS-* standards, its application to automation environments is clear. At the 2007

Consumer Electronics Show CES (; formerly an initialism for Consumer Electronics Show) is an annual trade show organized by the Consumer Technology Association (CTA). Held in January at the Las Vegas Convention Center in Winchester, Nevada, United States, the event ty ...

, a “Next Gen” home was highlighted by an automation system, Life, ware from Exceptional Innovation, that uses DPWS to communicate with a lighting system, audio distribution system, security system, motorized shades, security cameras, thermostats, washers and dryers, and a motorized television mount. The show demonstrated tremendous consumer interest in the prospect of bringing controllable devices into the same environment as digital entertainment, and manufacturers are taking notice. For many manufacturers, the first step towards DPWS adoption is the creation of a small “device bridge” between their native, usually proprietary, code and Web Services. At least 117 automation and AV products from 37 different vendors currently support DPWS either natively or through a bridge. At the International Security Controls (ISC) trade show, a major security company demonstrated a security system that supported DPWS, while the Kitchen and Bath Show (KBIS) saw two major appliance manufacturers demonstrating washers and dryers that communicated using DPWS. A communicative oven has been demonstrated at the International Building Show for the past two years. An even greater sign of the drive towards market acceptance of DPWS is the introduced-in-2006 "ConnectedLife.Home" home automation package offered by US retailer Best Buy. The package uses automation software and controllable devices that leverage DPWS for communications.

Research projects driving DPWS adoption

Within the SIRENA project, under the auspices of the European research initiative ITEA, Schneider Electric produced an early DPWS implementation targeted at embedded devices. This implementation was open-sourced through the SOA4D.org (SOA for Devices) Website, from which the DPWS stack (both C and Java versions) and its add-ons (like WS-Management and WS-Security implementations) can be freely downloaded. Also stemming from the SIRENA project, the "Web Services for Devices" (WS4D.org) website provides information, downloads and news about three DPWS implementations: one C implementation integrating gSOAP, one Java implementation using Axis, and another Java implementation that can use different Java editions, including Java ME. Following the SIRENA project, a new European research project from ITEA, named SODA (Service Oriented Device and Delivery Architecture), went further into the development and implementation of an embedded DPWS stack for devices and associated tools. The EU Research Projec
SOCRADES
composed by heavyweights like ABB, SAP, Schneider Electric, and Siemens, are focusing on implementing, testing and piloting prototypes of DPWS-enabled devices in the industrial automation domain. Further extending this work is the
EU AESOP
project. There are several proposals and/or projects having worked on an integration of DPWS with

, i.e. mainly providing an implementation for this

Java Java (; id, Jawa, ; jv, ꦗꦮ; su, ) is one of the Greater Sunda Islands in Indonesia. It is bordered by the Indian Ocean to the south and the Java Sea to the north. With a population of 151.6 million people, Java is the world's mo ...

framework.

External links

The DPWS SpecificationOASIS Web Services Discovery and Web Services Devices Profile (WS-DD) Technical Committee

References

{{DEFAULTSORT:Devices Profile For Web Services Network protocols Web services

DPWS standardization

Use cases

Research projects driving DPWS adoption

See also

External links

References