Redirecting Fault Response to JMS queue

Question

Hi Everyone,
We have a proxy which will pole the request from RequestQueue and call a proxy service(backend) and wait for the response from the proxy service(backend).
Once we get the response, it has to put the response to the ResponseQueue.
RequestQueue-->PoleService
PolseService-->ProxyService(Backend)
ProxyService1(Backend response)-->PoleService-->ResponseQueue
We are able to send the success response to the ResponseQueue. But when there is an Soap fault returned from ProxyService(Backend), the fault response is not getting redirected to ErrorQueue.
We have enabled ISResponseRequired, and also given ResponseURI and error Destination in poleProxyService. Also enabled "Same transaction for response"..  when there is an Soap fault returned from ProxyService1(Backend) ErrorQueue has the initial request in it instead of soap fault.
In RequestQueue->deliveryFailure, we have given ExpirationPolicy-Redirect, ErrorDestination-ErrorQueue
Could you please help us in redirecting the entire soap fault from the backend to the ErrorQueue

Answer 1

There is no need to add any publish/route action separately to put a response, whether success or fault, on the response queue. If a Proxy has a response jms queue specified, then it will put the content of $body at the end of proxy processing in the response queue automatically.
Here is how error handling can be done for JMS request-response proxies.
1. Add an error handler to the route node in the Poller proxy service (where you are routing to the next proxy/business service)
2. In the error handler, put an if-else block. Check the response form the 2nd proxy/business service, if $body contains a SOAP Fault then just do a Reply with Success, this will ensure that the SOAP Fault returned by the backend is sent to the response queue. In the else section(meaning that it was a system fault while calling the backend service) you can so a Replace of $body with $fault or with a custom SOAP fault expression before doing Reply with Success. This way you can ensure that you always return a SOAP Fault on the response queue in all scenarios.