You are going to need provide a little more information than this. What are you doing in the C++ code. Can you provide a sample app that demonstrates the problem?
I assume that this is coming out in the ActiveMQ console window, not from the c++ client as a BrokerError? Regards Tim. On Wed, 2007-11-14 at 10:39 -0800, JohnOldman wrote: > Hi > > Running SUSE 10.2 using CMS 2.1.1 with ActiveMQ 4.1 and stomp. > > Set up is one producer and two consumers (for failover). > > We have set JMSXGroupID in the producer, to make failover work, so only one > consumer consumes. > > And on receiving messages the producer dumps the following errors: > > <-----snip-----> > WARN QueueSubscription - Failed to set boolean header: > javax.jms.MessageNotWriteableException: Message properties are read-only > javax.jms.MessageNotWriteableException: Message properties are read-only > at > org.apache.activemq.command.ActiveMQMessage.checkReadOnlyProperties(ActiveMQMessage.java:568) > at > org.apache.activemq.command.ActiveMQMessage.setObjectProperty(ActiveMQMessage.java:382) > at > org.apache.activemq.command.ActiveMQMessage.setBooleanProperty(ActiveMQMessage.java:534) > at > org.apache.activemq.broker.region.QueueSubscription.assignGroupToMe(QueueSubscription.java:134) > at > org.apache.activemq.broker.region.QueueSubscription.canDispatch(QueueSubscription.java:101) > at > org.apache.activemq.broker.region.PrefetchSubscription.dispatch(PrefetchSubscription.java:383) > at > org.apache.activemq.broker.region.QueueSubscription.dispatch(QueueSubscription.java:172) > at > org.apache.activemq.broker.region.PrefetchSubscription.add(PrefetchSubscription.java:129) > at > org.apache.activemq.broker.region.policy.RoundRobinDispatchPolicy.dispatch(RoundRobinDispatchPolicy.java:58) > at org.apache.activemq.broker.region.Queue.dispatch(Queue.java:520) > at > org.apache.activemq.broker.region.Queue.sendMessage(Queue.java:346) > at org.apache.activemq.broker.region.Queue.send(Queue.java:326) > at > org.apache.activemq.broker.region.AbstractRegion.send(AbstractRegion.java:292) > at > org.apache.activemq.broker.region.RegionBroker.send(RegionBroker.java:382) > at > org.apache.activemq.broker.TransactionBroker.send(TransactionBroker.java:193) > at > org.apache.activemq.broker.BrokerFilter.send(BrokerFilter.java:126) > at > org.apache.activemq.broker.CompositeDestinationBroker.send(CompositeDestinationBroker.java:98) > at > org.apache.activemq.broker.MutableBrokerFilter.send(MutableBrokerFilter.java:136) > at > org.apache.activemq.broker.TransportConnection.processMessage(TransportConnection.java:498) > at > org.apache.activemq.command.ActiveMQMessage.visit(ActiveMQMessage.java:604) > at > org.apache.activemq.broker.TransportConnection.service(TransportConnection.java:294) > at > org.apache.activemq.broker.TransportConnection$1.onCommand(TransportConnection.java:185) > at > org.apache.activemq.transport.TransportFilter.onCommand(TransportFilter.java:65) > at > org.apache.activemq.transport.InactivityMonitor.onCommand(InactivityMonitor.java:122) > at > org.apache.activemq.transport.stomp.StompTransportFilter.sendToActiveMQ(StompTransportFilter.java:81) > at > org.apache.activemq.transport.stomp.ProtocolConverter.sendToActiveMQ(ProtocolConverter.java:119) > at > org.apache.activemq.transport.stomp.ProtocolConverter.onStompSend(ProtocolConverter.java:204) > at > org.apache.activemq.transport.stomp.ProtocolConverter.onStompCommad(ProtocolConverter.java:139) > at > org.apache.activemq.transport.stomp.StompTransportFilter.onCommand(StompTransportFilter.java:71) > at > org.apache.activemq.transport.TransportSupport.doConsume(TransportSupport.java:84) > at > org.apache.activemq.transport.tcp.TcpTransport.run(TcpTransport.java:137) > at java.lang.Thread.run(Thread.java:619) > <-----snip-----> > > > I understand that properties are read only - is the CMS violating this? >
