New Features/Enhancements
- OData Formatter
- Dependency refactoring from host common code
- Support for Batch with mime/mixed content where every part has a full HTTP request
- Web API code-based configuration (simplifications)
- Web-based test client for WCF Web API
- HTTP File upload
- Refactored formatters
- Better IoC support
- Additional samples for specific features such as file upload
- Content negotiation now supports qualifiers
- ActionOfStreamContent - Enables accessing the raw content stream
- New HttpMemoryBinding to enable in-memory hosting and invoking of Web APIs
New Prototype Features (on WebAPI-Prototype branch)
- WebApiConfiguration includes conventions for WebGet/WebInvoke
- WebApiRoute provides better side by side integration with MVC routes
- MapServiceRoute extension method simplified registration and usage of WebApiConfiguration
- SetDefaultHttpConfiguration / GetDefaultHttpConfiguration extension methods enable the getting and setting of a global configuration object that will be used by default by
- MapServiceRoute unless a specific one is provided
- MediaTypeFormatterCollectionExtensions.AddRange enables a more compact way to add formatters
- FormUrlEncodingMediaTypeFormatter
- Task<T> for Web API operations and sample
Breaking Changes
- DelegatingChannel renamed to DelegatingHandler
- HttpChannel renamed to HttpMessageHandler
- FormUrlEncodingMediaTypeFormatter and JsonValueMediaTypeFormatter were moved from the default branch to the WebAPI-Prototype branch as they are not currently part of the core product source
- DelegatingHandler no longer require passing in a channel in the constructor making it more friendly to inversion of control (IoC) containers
- New constructor overload on HttpMessageHandlerFactory overload which accepts a Func<IEnumerable<DelegatingHandler>> to allow user code or IoC containers to construct handlers.
- IQueryable previously supported case-insensitive matches on operators. In the current drop we only will match on lowercase operators i.e. "$top" but not "$Top". According to the spec this is correct behavior however we could relax it in the future.
Nuget
Like I mentioned above, preview 5 is also being released on Nuget today. Here's the breakdown of the Nuget packages that will be available:
- HttpClient : like it sounds, this gives you the HttpClient object model, which can be used by both the server and the client for a symmetric HTTP programming experience.
- JsonValue : Contains JsonValue API for typeless / dynamic access to Json.
- WebApi : The server-side object model for Web API
- WebApi.All : Preserved for backwards compatibility; basically just pulls in everything.
- WebApi.Core : Preserved for backwards compatibility; pulls in WebApi.0.5.0
- WebApi.Enhancements : Gives you the Web API core product code plus the enhancements library (from the prototype branch)
- WebApi.OData : Enables returning OData from a Web API.
In addition to the core Nuget packages, we're also pushing up a set of symbol packages so that you can more easily debug through Web API source code.
- HttpClient.0.5.0.symbols.nupkg
- JsonValue.0.5.0.symbols.nupkg
- WebApi.0.5.0.symbols.nupkg
- WebApi.Enhancements.0.5.0.symbols.nupkg
- WebApi.OData.0.5.0.symbols.nupkg
Reference:
http://codebetter.com/howarddierking/2011/09/15/web-api-preview-5-is-now-available/
http://nuget.org/packages?q=webapi
http://wcf.codeplex.com/releases/view/73423