Properly CloseWrite() the client socket once done with stdin when using
TLS connection (this used to rely on an erroneous type assertion).
Fixes#8658.
Fixes#8642.
Signed-off-by: Arnaud Porterie <arnaud.porterie@docker.com>
Signed-off-by: Michael Crosby <crosby.michael@gmail.com>
Upstream-commit: e98e56bb1edc3835bc835c9e034780845c64d797
Component: engine