WS4D Smart-* Demonstrator

February 21st, 2011

As we already posted, the CEBIT in Hannover and the Embedded World on Nürnberg are getting closer. So we posted a preview on the CEBIT demonstrator a few days ago, showing WS4D-uDPWS in action (see the SpO2 finger clip sensor).

Now would like to give a preview on the Embedded World demonstrator here. The video shows our Smart-Window, opening and closing depending on the humidity. The involved technologies are 6LoWPAN, IPv6, CoAP, DPWS, Digitalstrom and several of our existing WS4D tools. Feel free to comment…


February 21st, 2011

In January, the Internet Architecture Board announced the ‘Interconnecting Smart Objects with the Internet Workshop‘ to be held in conjunction with the IETF80 in Prague. While the workshop requires a selection of participants, the additional held ‘Tutorial on Interconnecting Smart Objects with the Internet’ is open for everyone. WS4D will join both the workshop and the tutorial. So feel free to join the tutorial and meet the strange IETF folk in Prague!

Background: WS4D participates in the IETF mainly in the 6LoWPAN and CoRE working groups, published I-Ds about DPWS for 6LoWPAN and SOAP over CoAP and has developed WS4D-uDPWS, an Open Source DPWS stack for mote class devices.

Security Extension for Mobile Devices in WS4D-gSOAP

December 13th, 2010

The WS4D group developed an alternative security profile for DPWS, the WS4D Security Profile. Its purpose is to enable mobile devices – such as smart phones or netbooks – to securely communicate over DPWS. An implementation in alpha state as well as documentation on how to secure your applications is available in the WS4D-gSOAP trunk. The highlights are

  • direct authentication between devices (no authentication server, no certificate authorities)
  • highly flexible authorization subsystem
  • in nearest future: fine-grained configuration of security constraints

Of course, we provide an additional version of the well-known air conditioner example – this time using the security profile’s implementation. Check it out!


November 25th, 2010

The TeKoMed project evaluates the deployment of Service-oriented Architectures also in medical applications like operating-rooms. DPWS is the core technology, of course. From 23.-24.11. the 2nd TeKoMed workshop was held in Luebeck and the WS4D folk was represented strong there. Main discussions were around security of patients data, which is a significant challenge and a major requirement in medical applications. But also semantic concerns and discussions about moral and ethical issues like the ‘best DPWS framework’ have been raised. So the variety of topics lead to fruitful discussions.
There will be two more workshops of the TeKoMed project so stay tuned and feel free to join!

WS4Dsec – Reliably Secure Web Services for Devices

September 22nd, 2010

There is a new research project investigating into security issues of the WS4D technology. Therefore the project will realize a toolkit called WS4Dsec that enables a combined development and verification process for WS4D-enabled devices ensembles.

For more information please visit

New Stack: WS4D uDPWS (Micro DPWS)

August 4th, 2010

We are happy to announce the release of the newest DPWS stack at WS4D. uDPWS (Micro DPWS) is designed to run on deeply embedded devices with only tens of kB RAM and ROM and thus enables seamless connectivity of deeply embedded devices and resource richer devices. For more information visit the project website at

WS4D JMEDS v2.0 beta 3 released

July 15th, 2010

The new beta 3 of the JMEDS v2.0 framework was released today. The release includes but is not limited to the following new features:

  • Support for dynamic generation of local web pages for devices and services (Presentation)
  • Basic support for service generation by WSDL
  • Support for streaming via attachments (MTOM)

Follow this link to futher information about the JMEDS v2.0 framework.

A new version of the DPWS-Explorer v3 based on the JMEDS framework v2.0 beta 3 was released, too. It features the selection of communication interfaces used for searching devices and services.

All necessary references for quick access:

New Internet-Draft at IETF

June 17th, 2010

Most of you may already know the emerging 6LoWPAN (IPv6 over Low power Wireless Personal Area Networks) protocols, pushing IPv6 based communication also down to wireless sensor networks. In the IETF, there are working groups like 6LoWAPP and CORE that are focusing design and development of application layer protocols on top of 6LoWPAN. One approach is of course usage of DPWS ;). There is an Internet-Draft at IETF 6LoWAPP and CORE, discussing this topic of DPWS for 6LoWPAN. So feel free to read the I-D and give feedback!

WS4D @ Web of Things Workshop in Mannheim

May 3rd, 2010

The First International Workshop on the Web of Things (WoT 2010) this year in Mannheim was held in conjunction with  PerCom 2010. It was a great event with highly fruitful discussions about future smart cooperating objects, characterized by tremendous resource constraints. Nevertheless, the trend towards 6LoWPAN (see and is gaining in momentum. During WoT there were of course also nice presentation about DPWS and WS4D related stuff like the WS4D port for SunSpots. For a complete program overview visit the WoT 2010 website. Let’s hope for a WoT 2011 and many more papers about the cool stuff around DPWS!

WS4D JMEDS port for SunSPOTs

April 21st, 2010

There is a port of the WS4D JMEDS Stack for the SunSPOTs. For more information on the port visit

You don’t know SunSPOTs? Visit!