This forces any pending data to be sent to the remote party before
emitting the 0-length EOF message, to make sure it appears as a seperate
message.
This fixes the "TestEchoWithMessaging" test
Signed-off-by: Simon Ferquel <simon.ferquel@docker.com>
This includes Reader, Writer, and Closer interfaces on top of
Windows file handles in a way that does not block the system thread
while the IO is outstanding.
This also includes net.Listener and net.Conn for named pipes.