This package includes HttpClient for sending requests over HTTP, as well as HttpRequestMessage and HttpResponseMessage for processing HTTP messages.
This package is not supported in Visual Studio 2010, and is only required for projects targeting .NET Framework 4.5, Windows 8, or Windows Phone 8.1...
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An implementation of HttpMessageHandler for use with HttpClient that invokes requests directly against an OWIN application. Useful for testing and embedded scenarios.