SDP is absent in BLE. Broadcast/advertise frame and GATT client/server are used instead.
Several links:
- BlueZ gatttool: command line tool to run common GATT procedures
- BlueZ GATT’s ready profiles
- hint: DBUS
- GATT and DBUS example
- How can I connect to the FitBit Zip over Bluetooth 4.0 LE on Linux with bluez?
- Bluetooth Low Energy: listening for notifications/indications in linux
- http://comments.gmane.org/gmane.linux.bluez.kernel/29547