repository/conf/sample/synapse_sample_154.xml

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    <!-- A proxy service with a loadbalace endpoint -->
<definitions xmlns="http://ws.apache.org/ns/synapse">

    <proxy name="LBProxy" transports="http" startOnLoad="true">
        <target faultSequence="errorHandler">
            <inSequence>
                <send>
                    <endpoint>
                        <session type="simpleClientSession"/>
                        <loadbalance algorithm="roundRobin">
                            <endpoint>
                                <address uri="http://localhost:9001/soap/LBService1">
                                    <enableAddressing/>
                                    <suspendDurationOnFailure>20</suspendDurationOnFailure>
                                </address>
                            </endpoint>
                            <endpoint>
                                <address uri="http://localhost:9002/soap/LBService1">
                                    <enableAddressing/>
                                    <suspendDurationOnFailure>20</suspendDurationOnFailure>
                                </address>
                            </endpoint>
                            <endpoint>
                                <address uri="http://localhost:9003/soap/LBService1">
                                    <enableAddressing/>
                                    <suspendDurationOnFailure>20</suspendDurationOnFailure>
                                </address>
                            </endpoint>
                        </loadbalance>
                    </endpoint>
                </send>
                <drop/>
            </inSequence>
            <outSequence>
                <send/>
            </outSequence>
        </target>
        <publishWSDL uri="file:repository/conf/sample/resources/proxy/sample_proxy_2.wsdl"/>
    </proxy>

    <sequence name="errorHandler">

        <makefault>
            <code value="tns:Receiver" xmlns:tns="http://www.w3.org/2003/05/soap-envelope"/>
            <reason value="COULDN'T SEND THE MESSAGE TO THE SERVER."/>
        </makefault>

        <header name="To" action="remove"/>
        <property name="RESPONSE" value="true"/>

        <send/>
    </sequence>

</definitions>