nRF24L01 serial like synchronous bi-directional communication

Hey robvoi,

I'm looking for a protocol for send/recieve messages over Bluetooth. Atm I'm using Serial.read()/write(bytearray,lengt) to get/post messages and my scetch is working well but sometimes some bytes are twisted, different or just missing.

Does your scetch work with Bluetooth?
Or do you know any protocol which would solve my problem?