Shuts down the socket in the direction.
Calling shutdown will never throw an exception and calling it several times is supported. Calling shutdown with either SocketDirection.both or SocketDirection.receive can result in a RawSocketEvent.readClosed event.
void shutdown(SocketDirection direction);
© 2012 the Dart project authors
Licensed under the BSD 3-Clause "New" or "Revised" License.
https://api.dart.dev/stable/2.18.5/dart-io/RawSocket/shutdown.html