Poor Man's Retry (with SI >= 2.2 use a RequestHandlerRetryAdvice)

context.xml

	<int:channel id="requestChannel">
		<int:dispatcher load-balancer="none"/> <!-- always first subscriber first -->
	</int:channel>

	<int:bridge order="1" input-channel="requestChannel" output-channel="toHttp" />
	
	<int-http:outbound-gateway request-channel="toHttp" 
					url="http://localhost:18080/http/receiveGateway"
					http-method="POST"
					expected-response-type="java.lang.String"/>

	<int:service-activator order="2" input-channel="requestChannel" output-channel="toHttp">
		<int-groovy:script>
			println "Failure, sleeping for 5"
			Thread.sleep 5000
			payload
		</int-groovy:script>
	</int:service-activator>

	<int:service-activator order="3" input-channel="requestChannel" output-channel="toHttp">
		<int-groovy:script>
			println "Failure, sleeping for 10"
			Thread.sleep 10000
			payload
		</int-groovy:script>
	</int:service-activator>