get ip address client in wcf service

Hi, i'm going to explain, how to allow some specific IP address to access my WCF Services and in this example, we need a xml file where we define to IPAddress to allow some specific address otherwise deny.
 

Example:
 

 public IPAddressFilter
  {
        try
            {
                OperationContext context = OperationContext.Current;
                MessageProperties msgProperties = context.IncomingMessageProperties;
                RemoteEndpointMessageProperty endpointPropertes = msgProperties[RemoteEndpointMessageProperty.Name] as RemoteEndpointMessageProperty;
                string IPAddress = endpointPropertes.Address;

                    if (!GetIP_From_Config_File(IPAddress))
                    {
                        HttpResponseMessageProperty responseProperty = new HttpResponseMessageProperty();
                        responseProperty.StatusCode = (System.Net.HttpStatusCode)401;
                        messageProperties["httpResponse"] = responseProperty;
                        response = 0 / response;
                    }
               
            }
            catch
            {
                throw;
            }
  }



 

private Boolean GetIP_From_Config_File(string IPstr)
 {
         Boolean idTrue = false;
         try
            {
                XmlDocument xmlDoc = new XmlDocument();
                xmlDoc.Load(@"C:\Config.xml");
                XmlNodeList IpAddress = xmlDoc.GetElementsByTagName("IPAddress");
              
                string adrs = IpAddress[0].InnerText.Trim();
                string[] arrayIPadrs = adrs.Split(',');

                if (arrayIPadrs.Contains(IPstr))
                {
                    idTrue = true;
                }
            }
            catch
            {
               
                throw;
            }
            return idTrue;
 }


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