sendDrained property

@override Future<void> get sendDrained

Completes when the send backlog drains — immediately when not backlogged, and always on close (a gated host must never wait forever on a dead peer).

Implementation

@override
Future<void> get sendDrained {
  if (!isSendBacklogged) return Future<void>.value();
  return (_drained ??= Completer<void>()).future;
}