callbackConnector.start();
assertTrue(callbackConnector.isStarted());
assertTrue(callbackConnector.getServerInvoker().isStarted());
assertFalse(MultiplexServerInvoker.getSocketGroupMap().containsKey("id"));
AddressPair addressPair = new AddressPair("localhost", connectPort, "localhost", freePort);
assertTrue(MultiplexServerInvoker.getAddressPairMap().containsKey(addressPair));
String params = "/?clientMultiplexId=id&multiplexBindHost=localhost&multiplexBindPort=" + freePort;
String locatorURI = serverLocatorURI + params;
InvokerLocator locatorClient = new InvokerLocator(locatorURI);