"tom.elrod(a)jboss.com" wrote : About the only thing can know for sure is if get a CannotConnectException, the call never reached the server. Anything else would be difficult to know for sure (i.e. if get SocketException, can't be certain that call didn't make it to server). Why does org.jboss.remoting.Client.invoke() throw Exception when client is not connected? According to the above description it should be CannotConnectExcetption. I was really disappointed when I got it. My code catches CannotConnectException to handle connection issues. Since Client is usually wrapped in a proxy, under some circumstances proxy class can wrap it into UndeclaredThrowableException making things even worse. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4057730#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...