My thoughts on this : 1.) For the test harness activeMQ brokers, install an Interceptor based on BrokerFilter.
http://activemq.apache.org/interceptors.html Install my interceptor into the broker. On inspection of the accessible methods on BrokerFilter, I am not sure which methods would allow my interceptor to "hold" a message, let one or two thru, and then let the "held" message through. I see send, but there is not obvious ways to have a message be "held" there is also preProcessDispatch. Any guidance would be greatly appreciated. -- View this message in context: http://activemq.2283324.n4.nabble.com/Test-harness-to-verify-Message-Order-Preservation-tp4655158p4655402.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.