WS-Discovery

Hi,

I'm having issues finding and then talking to my Brother DCP-7055W printer. I'm using code such as:

        DiscoveryEndpoint discoveryEndpoint = new UdpDiscoveryEndpoint(DiscoveryVersion.WSDiscoveryApril2005);
        DiscoveryClient discoveryClient = new DiscoveryClient(discoveryEndpoint);

        FindCriteria findCriteria = new FindCriteria();
        findCriteria.Duration = TimeSpan.FromSeconds(5);
        findCriteria.ContractTypeNames.Add(new System.Xml.XmlQualifiedName("PrintDeviceType", "http://schemas.microsoft.com/windows/2006/08/wdp/print"));

        FindResponse findResponse = discoveryClient.Find(findCriteria);

to doscover my printer. This seems to return two endpoints one for my Web enabled WebCam and one for my printer. The printer entry three ContractTypeNames, one for devprof:Device, one for print:PrintDeviceType, and one for scan:ScanDeviceType which matches my expectations. The associated endpointAddress contains a URI that looks like:

{urn:uuid:e3248000-80ce-11db-8000-008092965229}

I was half expecting this to be an IP address or similar http://192.168.1.143 would be nice as that's the address of the printer.

My question is two fold, why does the line:

findCriteria.ContractTypeNames.Add(new System.Xml.XmlQualifiedName("PrintDeviceType", "http://schemas.microsoft.com/windows/2006/08/wdp/print"));

not limit the findings to just my printer? And how do I obtain the actual IP address?

Many thanks

Martin