Hi, There are several issues in your route definition & usage.
1> I am not sure what the first route from("seda:test").to("jms:queue:a.test"); is doing for you. 2>Looking at your 2nd route segment, you are sending a request to a JMS consumer (jms:queue:a.test). The problem is that the JMS Consumer is taking the request as InOnly since a "replyTo" parameter has not been set on the Consumer. Any response that this Consumer needs to send back has to have a reply destination to send the response back. 3> Not sure what you are attempting with an Async Processor. An Async Processor is meant primarily to behave like a producer that sends an exchange with a callback along the route. Since a callback has been associated with the exchange and set to the next route element, the Async Processor thread can effectively go away. When the next route element receives the exchange or message and does its job (maybe calls other processors synchronously) it expects to receive an modified exchange with a done status back. When it does, it invokes the callback provided by the AsyncProcessor, at which point, a new AsyncProcessor thread is created and the message then can be handled and sent back. Is it were a synchronous request, the AsyncProcessor thread would have to be in Thread_WAIT. Hence it is more efficient thread-wise in situations where responses may arrive after a long duration. Check out the following links for code samples how to do this and how things work https://svn.apache.org/viewvc/camel/trunk/camel-core/src/test/java/org/apache/camel/processor/async/AsyncEndpointTest.java?view=markup AsyncEndpointTest https://svn.apache.org/viewvc/camel/trunk/camel-core/src/test/java/org/apache/camel/processor/async/MyAsyncComponent.java?view=markup MyAsyncComponent Hope this clarifies things. Cheers, Ashwin... ----- --------------------------------------------------------- Ashwin Karpe Apache Camel Committer & Sr Principal Consultant FUSESource (a Progress Software Corporation subsidiary) http://fusesource.com http://fusesource.com Blog: http://opensourceknowledge.blogspot.com http://opensourceknowledge.blogspot.com --------------------------------------------------------- -- View this message in context: http://camel.465427.n5.nabble.com/Using-Asynchronous-Processors-a-little-help-tp3073267p3073501.html Sent from the Camel - Users mailing list archive at Nabble.com.