Closes the WebSocket connection. Set the optional code
and reason
arguments to send close information to the remote peer. If they are omitted, the peer will see WebSocketStatus.NO_STATUS_RECEIVED code with no reason.
Future close([int code, String reason]);
© 2012 the Dart project authors
Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dartlang.org/stable/2.0.0/dart-io/WebSocket/close.html