An Introduction to the SOAP Service Description Language
Savas Parastatidis, Jim Webber, Simon Woodman · 2005
The SOAP Service Description Language (SSDL) is a SOAP-centric contract definition language for Web Services. SSDL provides the base framework for a range of protocol description frameworks which at one end of the spectrum can be a simpler, SOAP-focussed, direct replacement for WSDL while at the other end of the spectrum a more expressive contract definition language that can enable formal validation and reasoning about the protocols that a Web Service supports. Four protocol description frameworks are provided with the base SSDL specification though thirdparties are free to implement others to fit their needs.