Attribute Macro service 

#[service]

Generates RPC client and server from a trait definition.

Example

#[rapace::service]
trait Calculator {
    async fn add(&self, a: i32, b: i32) -> i32;
}

// Generated:
// - CalculatorClient<T: Transport> with async fn add(&self, a: i32, b: i32) -> Result<i32, RpcError>
// - CalculatorServer<S: Calculator> with dispatch method

Streaming RPCs

For server-streaming, return Streaming<T>:

use rapace_core::Streaming;

#[rapace::service]
trait RangeService {
    async fn range(&self, n: u32) -> Streaming<u32>;
}

The client method becomes: async fn range(&self, n: u32) -> Result<Streaming<u32>, RpcError>