f8/sdk/dart/package-fidl_fidl/ProxyController/sendMessage.md

# sendMessage method








void sendMessage
([OutgoingMessage](../../package-fidl_fidl/OutgoingMessage-class.md) message)





<p>Sends the given messages over the bound channel.</p>
<p>Used by subclasses of <a href="../../package-fidl_fidl/Proxy-class.md">Proxy&lt;T&gt;</a> to send encoded messages.</p>



## Implementation

```dart
void sendMessage(OutgoingMessage message) {
  if (!_reader.isBound) {
    proxyError('The proxy is closed.');
    return;
  }
  final int status =
      _reader.channel!.writeEtc(message.data, message.handleDispositions);
  if (status != ZX.OK)
    proxyError(
        'Failed to write to channel: ${_reader.channel} (status: $status)');
}
```