btsnoop_net exposes Bluetooth snoop logs over a local TCP socket which enables real-time debugging of HCI data with hcidump.
This feature is enabled by setting
bt_stack.conf. Once it has been enabled and the stack restarted, bluedroid will listen for incoming TCP connections on port 8872.
To use this feature with hcidump on a Linux host, you can run:
$ adb forward tcp:8872 tcp:8872 $ nc localhost 8872 | hcidump -r /dev/stdin