public interface ReqRespListener {
// Public Instance Methods
    public abstract javax.xml.soap.SOAPMessage onMessage( javax.xml.soap.SOAPMessage message);
}

The ReqRespListener interface is implemented by a JAXMServlet subclass that receives a SOAP message to which it immediately creates a response. The onMessage( ) method is called whenever a message is received and is provided with a SOAPMessage object created from that message as its only argument. The return value from this method may be either null or a SOAPMessage that is returned to the originator of the request message.

For reasons mentioned in the description of the JAXMServlet class, a JAXM client that implements this interface may not behave as expected in the JAXM reference implementation. Specifically, the reply message returned from the onMessage( ) method is not delivered.