The moment I have a reponse that matches the following statement, I don't need any more responses. No need to keep list of responses. lookupSucceeded = (response != null) && !(response instanceof Exception) && !(response instanceof NoHandlerForRPC); Hence, currently my only state is a boolean arising from that statement and in needMoreResponses(), all I do is return: return !(lookupSucceeded); Hence, having response and address in needMoreResponses() would avoid me having to cache that boolean because right now, I only have access to the response in isAcceptable. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4223978#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...