Error Handler

[Calvert, Zach (Zach)** CTR **]

I have a CXF bean sending out a camel message on a ProducerTemplate and I want 
any exceptions thrown on the route to immediately come back as the response.  
It is an inOut message:
producer.sendBodyAndHeaders(URI, ExchangePattern.InOut, body, headers);

I have not figured out the magic method to getting the response to 
automatically fast fail if an exception is thrown by any method along the way.  
For example, the URI goes to an ActiveMQ queue, and if I have it immediately run
If (true) throw new RuntimeException();

The exception eventually results the jetty response of HTTP 500 server error on 
the jetty CXF API.  I have two bundles, one bundle is the jetty CXF followed by 
sending this to an active MQ queue and the second bundle consumes the message 
with another route.  If on the second route, the operation throws an Exception 
and I create an error handler, to the tune of

        <camel:onException>
            <camel:exception>java.lang.Throwable</camel:exception>
            <camel:bean ref="fastFailErrorHandler" method="handleError" />
        </camel:onException>

    public Object handleError(Exchange exchange) {
        Throwable caused = exchange.getProperty(Exchange.EXCEPTION_CAUGHT, 
Throwable.class);
        exchange.getIn().setFault(true);
        exchange.getOut().setFault(true);
        logger.debug("Error handler triggered");
        return caused;
    }

The original problem will be a timeout exception, waiting the default 20 
seconds.  If I modify it to be
        <camel:onException>
            <camel:exception>java.lang.Throwable</camel:exception>
            <camel:handled>
                <camel:constant>true</camel:constant>
            </camel:handled>
            <camel:bean ref="fastFailErrorHandler" method="handleError" />
        </camel:onException>

Then the body continues working its way through subsequent queues as if nothing 
went wrong.

How do I tell Camel, "hey Camel, please throw this thing to the original caller 
as the response body".




Thanks,
Zach Calvert