rust-libp2p Add libp2p-bluetooth

Status: working prototype, but needs a lot of cleanup, possibly extracting in a different library.

Adds a Bluetooth transport in the form of the BluetoothConfig, and a network behaviour named BluetoothDiscovery.

When listening, the transport will listen to an RFCOMM port, make the local device discoverable by outside devices, and register the service to the local SDP (Service Discovery Protocol) server managed by the Bluetooth daemon of the system.

This SDP registeration registers the libp2p service with the following service class ID: d8263f85-cdca-4ac8-8fee-81c64221d6d5 (this is an arbitrary UUID that I generated on my machine). This service contains a custom attribute whose ID is 0x0300 and whose value is the base58 of the local peer ID.

The BluetoothDiscovery type will scan nearby Bluetooth devices for any that supports this libp2p service, and will store a view of this them. The associated multiaddresses are of the form /bluetooth/xx:xx:xx:xx:xx:xx/l2cap/3/rfcomm/x.

This multiaddress format can be dialed by the transport, which will establish a connection through RFCOMM.

Feb 25 '19 10:02 tomaka

We are unfortunately depending on libdbus. I can't find any pure Rust alternative to it.

Mar 03 '19 20:03 tomaka

I can't find any pure Rust alternative to it.

Update: there are now at least two pure Rust dbus libraries:

https://gitlab.freedesktop.org/zeenix/zbus
https://github.com/KillingSpark/rustbus

Feb 19 '20 14:02 tomaka

I've spent a bit of time looking through the Rust Bluetooth ecosystem and at least for targeting Linux only, this looks very promising: https://github.com/bluez/bluer

Jul 20 '22 13:07 thomaseizinger

I've spent a bit of time looking through the Rust Bluetooth ecosystem and at least for targeting Linux only, this looks very promising: bluez/bluer

This does depend on dbus which depends on libdbus though.

Jul 20 '22 13:07 thomaseizinger

Is this transport abandoned?

Since bluetooth crates are discussed here, I would like to through in this one: https://crates.io/crates/btleplug

Oct 18 '22 06:10 umgefahren

Is this transport abandoned?

I think it'd be really cool but yeah, someone needs to drive (and eventually spec) this.

Since bluetooth crates are discussed here, I would like to through in this one: https://crates.io/crates/btleplug

This one is host-only so I am not sure if it is sufficient.

Oct 18 '22 07:10 thomaseizinger

This pull request has merge conflicts. Could you please resolve them @tomaka? 🙏

Mar 22 '23 15:03 mergify[bot]

Closing as stale.

Sep 28 '23 06:09 thomaseizinger