<AssignMessage enabled="true" continueOnError="false" async="false" name="SetIPHeader">
    <DisplayName>Assign Message Policy</DisplayName>
    <FaultRules/>
    <Properties/>
    <Copy source="request.client.ip">
        <Headers>
            <Header name="client-ip"/>
        </Headers>
    </Copy>
    <IgnoreUnresolvedVariables>true</IgnoreUnresolvedVariables>
    <AssignTo createNew="false" transport="http" type="request"></AssignTo>
</AssignMessage>