Cargo Features

udpexchange has no features set by default.

[dependencies]
udpexchange = { version = "0.1.1", features = ["mini", "replay"] }
mini = libc
replay

Features from optional dependencies

In crates that don't use the dep: syntax, optional dependencies automatically become Cargo features. These features may have been created by mistake, and this functionality may be removed in the future.

libc mini?