custom header in target server of loadbalancer

[babuk0930]

While configuring load balancer, how to send custom header to each of the target server.

We have loadbalancer configuration as follows

        <LoadBalancer>
            <Algorithm>RoundRobin</Algorithm>
            <Server name="server1"/>
            <Server name="server"/>
            <MaxFailures>5</MaxFailures>
        </LoadBalancer>

But for each server, we need to send a custom header which is unique for that server.

If it common header, i would have used assign message policy in previous step and add it.

Any inputs on how to send unique headers for that particular target serve