// Set up callback handler.
TestCallbackHandler callbackHandler = new TestCallbackHandler();
HashMap metadata = new HashMap();
metadata.put(Bisocket.IS_CALLBACK_SERVER, "true");
client.addListener(callbackHandler, metadata);
assertEquals(1, callbackHandler.counter);
// Verify ControlMonitorTimerTask is not created.
Set callbackConnectors = client.getCallbackConnectors(callbackHandler);
assertEquals(1, callbackConnectors.size());