In his latest Service Station column, Aaron Skonnard writes about how to use the HttpListener class which comes with Whidbey which allows code running on XP SP2 and Windows Server 2003 to wrap the functionality of HTTP.SYS without having to have IIS on the box.  This means it’s possible to listen for incoming HTTP requests within any .NET application domain (e.g windows form, console app, Windows service, serviced component etc) without having to install IIS.  Picture being able to ‘call back’ into Windows Forms applications with ASMX web services.  While WSE 2.0 has already given us support for web service endpoints on TCP, I’m really excited to see this HTTP support in Whidbey because I think it will be more widely used and deployed.  Go and read the article and download the sample code.