conorpp
Support for BT-LE?
Any chance of supporting Bluetooth Low Energy? This seems like the perfect tool for reverse engineering the new BB-8 toy.
Yes, BLE could be supported. This has been on my TODO list for a while, just a matter of finding the timer.
Since BLE is essentially a completely different protocol, a few days or week of work would be required. A similar approach taken with btproxy currently with regular Bluetooth protocol can be applied to BLE, it's just a matter of writing functionality for:
- connecting/reconnecting
- scanning
- listening for data / sending data on arbitrarily configured sockets
With the later being the more complicated part. To put simply, regular Bluetooth applications set up a RFCOMM or L2CAP socket and they can easily be cloned or relayed. BLE on the other hand, doesn't do RFCOMM/L2CAP sockets for applications and instead uses a more specialized protocol GATT.
See the two stacks:
Regular Bluetooth
BLE
AFAIK, layers below L2CAP can be ignored.
So I see two ways about going about it.
- Take the current btproxy approach and emulate GATT sockets and relay data sent by each device in a GATT supported manner. This would be easier to setup for different platforms.
- Just relay traffic on L2CAP layer. But L2CAP is typically handled in a kernel module. So that may be too invasive to get working. Also I'm not sure how functional this approach would be yet.
I was planning to try the first approach when I got some free time down the road. If anyone is interested in helping out, that would be great.
There are some nice looking BLE libraries out there.
https://github.com/IanHarvey/bluepy https://github.com/sandeepmistry/noble https://github.com/sandeepmistry/bleno
