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4.3. Configuring How Responses are Received

Overview
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If your provider endpoint participates in in/out message exchanges, it will wait for a response from receiving endpoint. You can configure the JMS destination on which the endpoint listens for the response. You can also configure the amount of time the endpoint will wait for a response before it times out.

Configuring the response destination
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An endpoint chooses the destination to use for receiving responses with the following algorithm:
  1. If you provided a custom DestinationChooser implementation, the endpoint will use that to choose it's endpoint.
    For more information about providing custom DestinationChooser implementations see Section 7.1, “Using a Custom Destination Chooser”.
  2. If you did not provide a custom DestinationChooser implementation, the endpoint will use its default DestinationChooser implementation to choose an endpoint.
    The default destination chooser checks the message exchange received from the NMR for a DESTINATION_KEY property. If the message exchange has that property set, it returns that destination.
  3. If the destination chooser does not return a destination, the endpoint will check to see if you configured the destination explicitly.
    You configure a response destination using a Spring bean. The recommend way to configure the destination is to configure the bean separately and refer the bean using the endpoint's replyDestination attribute as shown in Example 4.1, “Configuring a Provider's Destination”. You can also add the bean directly to the endpoint by wrapping it in a jms:replyDestination child element.
  4. If the destination chooser does not return a destination and you did not explicitly configure a destination, the endpoint will use the value of the replyDestinationName attribute to choose its destination.
    The replyDestinationName attribute takes a string that is used as the name of the destination to use. The binding component's default behavior when you provide a destination name is to resolve the destination using the standard JMS Session.createTopic() and Session.createTopic() methods to resolve the JMS destination.
    Note
    You can override the binding component's default behavior by providing a custom DestinationResolver implementation. See Section 7.2, “Using a Custom Destination Resolver”.

Configuring the timeout interval
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By default, a provider endpoint will wait an unlimited amount of time for a response. Since the provider blocks while it is waiting for a response, your application may hang indefinitely if a response does not arrive.
You can configure the endpoint to timeout using the recieveTimeout attribute. The recieveTimeout attribute specifies the number of milliseconds the provider endpoint will wait for a response before timing out.

Example
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Example 4.4, “JMS Provider Endpoint with a Response Destination” shows a JMS provider endpoint that will wait for a response for one minute.

Example 4.4. JMS Provider Endpoint with a Response Destination

<beans xmlns:jms="http://servicemix.apache.org/jms/1.0"
       ... >
  ...
  <jms:soap-provider wsdl="classpath:widgets.wsdl"
                     destinationName="widgetQueue"
                     connectionFactory="#connectionFactory"
                     recieveTimeout="60000"
                     replyDestinationName="widgetResponse" />
  ...
</beans>
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