# Module ebf_driver # * [Description](#description) * [Function Index](#index) * [Function Details](#functions)
Protocol driver process for EBF (Erlang Binary Format) protocol sessions.
This driver automagically relies on the OTP +gen_tcp+ "packet"
feature, using a 4-byte prefix to specify the size of the data
coming from the client. Similarly, this packet feature is used
when sending our reply back to the client.
.
__Behaviours:__ [`contract_driver`](contract_driver.md).
## Function Index ##
| decode/4 | |
| encode/3 | |
| init/1 | |
| init/2 | |
| start/1 | |
| start/2 |