Cargo Features

[dependencies]
ecu-uds = { version = "0.1.6", default-features = false, features = ["std2013", "std2020", "session_data_check", "tokio"] }
default = std2020

The std2020 feature is set by default whenever ecu-uds is added without default-features = false somewhere in the dependency tree.

std2006 std2013
std2020 default
session_data_check

Features from optional dependencies

tokio implicit feature

Enables tokio

tokio:

An event-driven, non-blocking I/O platform for writing asynchronous I/O backed applications