title: Cancelling a server-side GWT call
body: <p>I'm using <code>RequestBuilder</code> to time out GWT requests which take too long:</p>
  
  <pre><code>RequestBuilder requestBuilder = _service.getStatistics(callback);
  requestBuilder.setTimeoutMillis(5000);
  try {
      requestBuilder.send();
  } catch (RequestException e) {
      GWT.getUncaughtExceptionHandler().onUncaughtException(e);
  }
  </code></pre>
  
  <p>Is there a way of notifying the invoked remote service that the call has timeout out on the client and that it should be cancelled?</p>