Cargo Features

jsonrpc-sys has no features set by default.

[dependencies]
jsonrpc-sys = { version = "0.1.4", features = ["unknown_params", "utils"] }
unknown_params

Enables raw_value of serde_json

serde_json:

Provide a RawValue type that can hold unprocessed JSON during deserialization.

utils

Enables serde_json

jsonrpc-sys has 2 features without comments.