Cargo Features

futures-tls has no features set by default.

[dependencies]
futures-tls = { version = "0.1.0", features = ["force-openssl"] }
force-openssl = openssl, openssl-verify

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.

openssl force-openssl?

Enables openssl ^0.7

openssl-verify force-openssl?

Enables openssl-verify ^0.1