[bombcar]

The way to do p2p communication without the Internet is to remove immediacy from it.

Old email servers were configured this way, they’d try to communicate the next time they got a connection.

For text it could be simple as encrypting and sending it to as many devices as you see until you get an ack back - something almost blockchain-like, but without the CPU and just signing.

Ack’d messages would be purged from ThePile and you could also expire them after a time. It’d be a few gigabytes perhaps, and could share diffs when you see another device.

[sgt]

FIDONet was pretty rugged that way.