A project I've wanted to go back to on and off, but I've never actually had enough people around to test it.
The very basics of the protocol idea is that of deserted islands. When you get on the network you provide a bootstrap computer, which sends all the other computers it knows about in the network to you. After that you can send a message over UDP. It picks a random computer to which the message in a bottle "floats."
Does it get there? Probably. Maybe not. Is it perfectly intact? Maybe it got a little wet.
The main issue i ran into is that my router doesn't like connecting me to my network through my own ip address, so testing was too hard to do with a single person
