Hvsock_lwt.Flow_shutdown
Adds a layer of signalling over Hyper-V sockets to simulate unidirectional shutdown. This implements the same protocol as:
https://github.com/rneugeba/virtsock/tree/master/go/hvsock
module Make (Fn : S.FN) (Socket_family : Hvsock.Af_common.S) : sig ... end
A Mirage FLOW over a hypervisor socket with an additional protocol layer to workaround bugs where in-flight data is lost after a shutdown_write or a close.