Same-network case: Investigate how to establish a communications channel post-discovery.

[dosirrah]

Once a service has been discovered (e.g., using m-DNS for the mobile app same-network case), how do we establish communications? We need to be able to make a procedure call. Implement a fling call that can be called from a mobile-app that passes a URL and a service that outputs the URL on the node running the service.

At least study how to do this with WebRTC and web sockets. Communications can either be direct or if necessary through a relay.

Output shoudl be a short white paper in Markdown or Jupyter Notebooks that is committed to GitHub.