@Test(expected = Exception.class)
public void testConnectionRefusedOneWay() throws IOException {
Transceiver client = new HttpTransceiver(new URL("http://localhost:4444"));
SpecificRequestor req = new SpecificRequestor(Simple.class, client);
addRpcPlugins(req);
Simple proxy = SpecificRequestor.getClient(Simple.class, (SpecificRequestor)req);
proxy.ack();
}