Jetty asynchronous processing with seda

[LeviStrauss]

Hi,

I would like to create a kind of proxy which receives the requests, sends
it to a seda process and waits for the response. How can I send custom
error code back?
This doesn't work with camel 2.4, I always get 200 OK when file shows up in
dir within 30 seconds, if not then I get 500 Server Error not 520.

How can I pass the request (body) to seda process?
I would like to push HTTP request(xml) to a ActiveMQ queue and based on the
returned file content (xpath evaluation) return a code and body to jetty.
(200,500 whatever)

    <route id="seda">
    <from uri="jetty:http://localhost:8088/sedatest"/>
    <to uri="seda:input"/>
    </route>

    <route id="seda2">
    <from uri="seda:input"/>
    <setHeader
headerName="HttpProducer.HTTP_RESPONSE_CODE"><constant>520</constant></setHeader>
    <pollEnrich uri="file:///tmp/seda" timeout="50000"/>

    </route>

Thanks,

Levente