DLNA or UPnP example?

Hi all, I'd like to add local network connectivity using DLNA or UPnP similar to how the Roku Media Player functions (automatically detects a DLNA server I have on my local network).

Is there an existing SDK example or possibly example/similar code on github or anywhere else online that I can take a look at for reference? If anyone can point me in the right direction I'd very much appreciate it!