HttpClientHandler.PreAuthenticate Property
Gets or sets a value that indicates whether the handler sends an Authorization header with the request.
Namespace: System.Net.Http
Assembly: System.Net.Http (in System.Net.Http.dll)
After a client request to a specific Uri is successfully authenticated, if the PreAuthenticate property is true and credentials are supplied, HttpClientHandler matches against the credential list supplied in the Credentials property. The Authorization header is sent with each request to any Uri that matches the specific Uri up to the last forward slash.
If the client request to a specific Uri is not successfully authenticated, the request uses standard authentication procedures.
With the exception of the first request, the PreAuthenticate property indicates whether to send authentication information with subsequent requests to a Uri that matches the specific Uri up to the last forward slash without waiting to be challenged by the server.
Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
