// custom filter that applies to a certain hostname only
FilterType filter = SysmonUtil.wrapFilterString(filterString);
}
// invoke subscription request
SubscribeResponse subscriptionTicket = subscriptionPort.subscribeOp(request);
// check message constraints
AddressingProperties resProps = SysmonUtil.getResponseProperties((BindingProvider)subscriptionPort);
assertEquals(reqProps.getMessageID().getURI(), resProps.getRelatesTo()[0].getID());