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# karyon jsonrpc
A fast and lightweight async implementation of [JSON-RPC
2.0](https://www.jsonrpc.org/specification), supporting the Tcp and Unix protocols.
## Example
```rust
use std::sync::Arc;
use serde_json::Value;
use smol::net::{TcpStream, TcpListener};
use karyon_jsonrpc::{JsonRPCError, Server, Client, register_service, ServerConfig, ClientConfig};
struct HelloWorld {}
impl HelloWorld {
async fn say_hello(&self, params: Value) -> Result<Value, JsonRPCError> {
let msg: String = serde_json::from_value(params)?;
Ok(serde_json::json!(format!("Hello {msg}!")))
}
}
let ex = Arc::new(smol::Executor::new());
//////////////////
// Server
//////////////////
// Creates a new server
let listener = TcpListener::bind("127.0.0.1:60000").await.unwrap();
let config = ServerConfig::default();
let server = Server::new(listener, config, ex.clone());
// Register the HelloWorld service
register_service!(HelloWorld, say_hello);
server.attach_service(HelloWorld{});
// Starts the server
ex.run(server.start());
//////////////////
// Client
//////////////////
// Creates a new client
let conn = TcpStream::connect("127.0.0.1:60000").await.unwrap();
let config = ClientConfig::default();
let client = Client::new(conn, config);
let result: String = client.call("HelloWorld.say_hello", "world".to_string()).await.unwrap();
```
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