WCF 3.5 RemoteEndpointMessageProperty in load balancing situation

[John Dow]

I have a WCF service in .Net 3.5 and I am trying to use
RemoteEndpointMessageProperty to get the IP address of the client who
consume the service, for trouble shooting purposes:

OperationContext context = OperationContext.Current;
MessageProperties properties = context.IncomingMessageProperties;
RemoteEndpointMessageProperty endpoint =
properties[RemoteEndpointMessageProperty.Name] as
RemoteEndpointMessageProperty;
if (endpoint != null)
{
IP = string.Concat(endpoint.Address, ":", endpoint.Port);
}

However, since the WCF service is hosted in IIS behind a load balancer, the
IP address I got is always the IP of the load balancer.
Is there any way to get around this so that I can get the true IP of the
client?

Thanks

[eyal....@gmail.com]

string retIp = "";
try
{

OperationContext context = OperationContext.Current;

MessageProperties prop = context.IncomingMessageProperties;

HttpRequestMessageProperty endpointLoadBalancer =
prop[HttpRequestMessageProperty.Name] as HttpRequestMessageProperty;

if(endpointLoadBalancer.Headers["X-Forwarded-For"]!=null)
{
retIp = endpointLoadBalancer.Headers["X-Forwarded-For"];
}

if(string.IsNullOrEmpty(retIp))
{
RemoteEndpointMessageProperty endpoint =
prop[RemoteEndpointMessageProperty.Name] as RemoteEndpointMessageProperty;
retIp = endpoint.Address;
}
}
catch (Exception ex) {
log.Error("Error in GetClientIP: " + ex.ToString());
}
return retIp;