Attribute Macro service 

#[service]

Re-export the service macro Marks a trait as an RPC service.

This macro generates:

• Per-method request structs (private)
• impl Trait for Client<dyn Trait> so clients can call methods directly
• <dyn Trait>::serve(impl) method to create a server

Example

#[rsrpc::service]
pub trait Worker: Send + Sync + 'static {
    async fn run_task(&self, task: Task) -> Result<Output, Error>;
    async fn status(&self) -> WorkerStatus;
}

// Client: impl Worker for Client<dyn Worker>
// Server: <dyn Worker>::serve(my_impl)

Streaming

Methods returning Result<RpcStream<T>> are automatically handled as server-side streaming - no special annotation needed:

#[rsrpc::service]
pub trait LogService: Send + Sync + 'static {
    async fn stream_logs(&self, filter: Filter) -> Result<RpcStream<LogEntry>>;
}

Local (non-Send) services

Use #[rsrpc::service(?Send)] to allow non-Send futures. This is useful when your async methods hold non-Send types across await points:

#[rsrpc::service(?Send)]
pub trait LocalWorker: 'static {
    async fn run_task(&self, task: Task) -> Result<Output, Error>;
}

Note: ?Send services require a single-threaded runtime for the server.