/// <summary>
/// Given a <paramref name="deviceDescriptor"/>, this method extracts two kinds of data:
/// <list type="bullet">
/// <item><see cref="ServiceDescriptor"/>s for services of the given device and all embedded devices (organized in a dictionary mapping
/// device UUIDs to dictionaries mapping service type and version to service descriptors for all services in the device) in
/// <paramref name="serviceDescriptors"/></item>
/// <item>A collection of all service descriptors which are returned in <paramref name="serviceDescriptors"/>
/// in <paramref name="pendingServiceDescriptions"/></item>
/// </list>
/// </summary>
/// <param name="deviceDescriptor">Descriptor of the device to start extracting service descriptors.</param>
/// <param name="serviceDescriptors">Dictionary of device UUIDs to dictionaries mapping service type and version to service descriptors of services
/// which are contained in the device with the key UUID.</param>
/// <param name="pendingServiceDescriptions">Dictionary of device service descriptors mapped to the SCPD url of the
/// service.</param>
private static void ExtractServiceDescriptorsRecursive(DeviceDescriptor deviceDescriptor,
IDictionary <string, IDictionary <string, ServiceDescriptor> > serviceDescriptors,
ICollection <ServiceDescriptor> pendingServiceDescriptions)
{
string deviceUuid = deviceDescriptor.DeviceUUID;
ICollection <ServiceDescriptor> services = deviceDescriptor.CreateServiceDescriptors();
if (services.Count > 0)
{
IDictionary <string, ServiceDescriptor> sds = serviceDescriptors[deviceUuid] = new Dictionary <string, ServiceDescriptor>();
foreach (ServiceDescriptor service in services)
{
sds.Add(service.ServiceTypeVersion_URN, service);
pendingServiceDescriptions.Add(service);
}
}
foreach (DeviceDescriptor childDevice in deviceDescriptor.ChildDevices)
{
ExtractServiceDescriptorsRecursive(childDevice, serviceDescriptors, pendingServiceDescriptions);
}
}