1 free Chapter of Microsoft's "Inside Indigo" book
Inside "Indigo," Chapter 2: The Journey of a Message
Microsoft has made the 2nd chapter of an upcoming book on Indigo available on their website here. IT's full of juicy bits of code and a good technical run through. In case you don't know what Indigo is (from Microsoft's site)...
"Indigo" is a set of .NET technologies for building and running connected systems. It is a new breed of communications infrastructure built around the Web services architecture. Advanced Web services support in Indigo provides secure, reliable, and transacted messaging along with interoperability. Indigo's service-oriented programming model is built on the Microsoft .NET Framework and simplifies development of connected systems. Indigo unifies a broad array of distributed systems capabilities in a composable and extensible architecture, spanning transports, security systems, messaging patterns, encodings, network topologies and hosting models. Indigo will be an integral capability of Windows "Longhorn" and will also be supported on Windows XP and Windows Server 2003.