close method

@override Future<void> close()

Closes the channel. Idempotent.

Implementation

@override
Future<void> close() async {
  if (_closed) return;
  _txDroppedBytes += _pendingWriteBytes;
  _pendingWriteBytes = 0;
  _closed = true;
  final alreadyDisconnected = _current == ConnectionState.disconnected;
  _current = ConnectionState.disconnected;
  // Mirror every real transport: emit the terminal state before closing.
  if (!_state.isClosed) {
    if (!alreadyDisconnected) _state.add(ConnectionState.disconnected);
    await _state.close();
  }
  if (!_incoming.isClosed) await _incoming.close();
}