A first look at the Windows Web Services API

The article shows how to interop between a WCF service and a WWS client, and also how to rewrite the WCF service in WWS retaining compatibility with existing WCF clients.

Introduction

The Windows Web Services API is a native implementation of SOAP and can be used to interop transparently with existing WCF services and clients, in addition to offering the ability to completely achieve a client-server implementation in pure native code. I have been longing to play with it ever since I heard Nikola Dudar talk about it at the MVP Summit earlier this year. It’s natively included with Windows 7, but can also be installed and used from older OSes such as XP, Vista, 2003 and 2008. You can write pure native clients using WWS that can connect to an existing managed WCF service, and also write a WWS native service that can be consumed by a WCF client. It’s so compatible that you can replace either a WCF client or a WCF service with a WWS equivalent without the other party being aware of it. In this article, I'll talk about a simple WCF service and its WCF client, and then show how to use WWS to write a native client that can consume the WCF service. I'll then show how the WCF service itself can be replaced transparently with an equivalent WWS service, and how both the WCF and WWS clients can connect to this WWS service without any changes in code.

Note : The examples were written on a 64 bit Windows 7 RC machine running VS 2010 beta 1.

The example WCF service

The first thing to do is to create a very simple WCF service. For our example I'll use a string reversing service that exposes a single method that accepts a string and returns the reversed string.

Read more: Codeproject

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