Cargo Features

[dependencies]
turn-server = { version = "3.4.0", default-features = false, features = ["udp", "tcp", "api", "prometheus"] }
default = udp

The udp feature is set by default whenever turn-server is added without default-features = false somewhere in the dependency tree.

udp default
tcp
api prometheus?
prometheus = api

turn-server has 5 features without comments.