Comment by kragen
8 days ago
Technical whitepaper: https://github.com/jackjackbits/bitchat/blob/main/WHITEPAPER...
Presumably that is the key to getting out of the Apple ghetto.
8 days ago
Technical whitepaper: https://github.com/jackjackbits/bitchat/blob/main/WHITEPAPER...
Presumably that is the key to getting out of the Apple ghetto.
From the whitepaper: "bitchat implements a custom mesh networking protocol over BLE"
I wonder why they didn‘t implement the BLE mesh networking standard released in 2017 by the Bluetooth SIG.
There are already several open source implementations, but the Bluetooth SIG standard only supports flood propagation.
This is fine for managing a few hundred temperature sensors or lighting controls up to the building's floor concentrator, which is the main use case for this standard, but it is completely unsuitable for sending individual messages from user A to user B.
Flooding does work for sending individual messages from user A to user B at a small enough scale, but it gets progressively less efficient as the network grows, and at some level it will collapse.
4 replies →
Interesting. I looked at https://www.bluetooth.com/mesh-directed-forwarding/ and it seems like "Bluetooth Mesh Directed Forwarding" is an improvement over "Bluetooth Mesh Managed Flooding" for this scenario? It got added in v1.1 of the spec.