How to get cleint ip address in wcf rest service ( webinvoke)

Question

Hi 

i want to get client ipaddress using below sample.

http://www.danrigsby.com/blog/index.php/2008/05/21/get-the-clients-address-in-wcf/

 i have operationcontract method as "webInvoke" , it is giving ipaddress of the wcf host but not the actual client ipaddress. 

here is my service contract . Inside GetIBookResults() method i a mtrying to get client ip address. using (

public IList<Employee> GetIBookResults(string EValues)
        {

OperationContext context = OperationContext.Current;
                MessageProperties messageProperties = context.IncomingMessageProperties;
                RemoteEndpointMessageProperty endpointProperty =
                    messageProperties[RemoteEndpointMessageProperty.Name]
                    as RemoteEndpointMessageProperty;


                string clientIpAddress = endpointProperty.Address;)

.....................................

}

here is my service contract

                          

[ServiceContract]


    public interface IIBookService
    {


        [OperationContract]
        [WebInvoke(Method = "GET",
            ResponseFormat = WebMessageFormat.Json,
            BodyStyle = WebMessageBodyStyle.Bare,
            UriTemplate = "employees/EValues={EValues}")]
        IList<Employee> GetIBookResults(string EValues);

}

Please help me on this.