According to what I've read it indeed only uses mDNS for the discovery and then uses a unicast SSL connection between the Chromecast and the client device, and often another unicast connection to the actual source if it can be streamed directly.
According to what I've read it indeed only uses mDNS for the discovery and then uses a unicast SSL connection between the Chromecast and the client device, and often another unicast connection to the actual source if it can be streamed directly.