Cargo Features

[dependencies]
jsonrpc-v1 = { version = "0.1.0", default-features = false, features = ["ssl"] }
default = ssl

The ssl feature is set by default whenever jsonrpc-v1 is added without default-features = false somewhere in the dependency tree.

ssl default

Enables ssl of hyper ^0.6

jsonrpc-v1 has 2 features without comments.