Use function pointers in IISHttpServer

[davidfowl]

Convert these

aspnetcore/src/Servers/IIS/IIS/src/Core/IISHttpServer.cs

Lines 25 to 29 in aaaaf57

	private static readonly NativeMethods.PFN_REQUEST_HANDLER _requestHandler = HandleRequest;
	private static readonly NativeMethods.PFN_SHUTDOWN_HANDLER _shutdownHandler = HandleShutdown;
	private static readonly NativeMethods.PFN_DISCONNECT_HANDLER _onDisconnect = OnDisconnect;
	private static readonly NativeMethods.PFN_ASYNC_COMPLETION _onAsyncCompletion = OnAsyncCompletion;
	private static readonly NativeMethods.PFN_REQUESTS_DRAINED_HANDLER _requestsDrainedHandler = OnRequestsDrained;

to use the new function pointers feature in C#

cc @jkotas

[BrennanConroy]

Cool. Point to the feature please?

[davidfowl]

oops https://github.com/dotnet/csharplang/blob/master/proposals/function-pointers.md

[ghost]

Thanks for contacting us.
We're moving this issue to the Next sprint planning milestone for future evaluation / consideration. We will evaluate the request when we are planning the work for the next milestone. To learn more about what to expect next and how this issue will be handled you can read more about our triage process here.