.NET Standard implementation of Simple Service Discovery Protocol (with AV transport service control point sample).
var devices = await new Ssdp().SearchUPnPDevicesAsync("MediaRenderer");
var controlPoint = new AVTransportControlPoint();
// Gets the list of the media renderers
var mediaRenderers = await controlPoint.GetMediaRenderersAsync();
// Play the Big Buck Bunny video to a media renderer
await controlPoint.PlayAsync(mediaRenderers.First(), "http://download.blender.org/peach/bigbuckbunny_movies/big_buck_bunny_480p_surround-fix.avi");
NetworkInterface.GetAllNetworkInterfaces() method is not implemented in UWP before Fall Creators Update.
So, in order to make this work in UWP (version < build 16299), you must use the specific NetworkInfo class for UWP in your code. You will pass this NetworkInfo object to the constructor of the Ssdp class :
new AVTransportControlPoint(new Ssdp(new NetworkInfo()))