<PackageReference Include="System.Net.Http.WinHttpHandler" Version="11.0.0-preview.3.26207.106" />

System.Net.Http.WinHttpRequestCallback

static class WinHttpRequestCallback
namespace System.Net.Http { internal static class WinHttpRequestCallback { public static global::Interop.WinHttp.WINHTTP_STATUS_CALLBACK StaticCallbackDelegate; public static void WinHttpCallback(IntPtr handle, IntPtr context, uint internetStatus, IntPtr statusInformation, uint statusInformationLength); } }