# jsonrpc-core
Transport agnostic rust implementation of JSON-RPC 2.0 Specification.
[Documentation](http://paritytech.github.io/jsonrpc/jsonrpc_core/index.html)
- [x] - server side
- [x] - client side
## Example
`Cargo.toml`
```
[dependencies]
jsonrpc-core = "4.0"
```
`main.rs`
```rust
use jsonrpc_core::*;
fn main() {
let mut io = IoHandler::default();
io.add_method("say_hello", |_params: Params| {
Ok(Value::String("hello".into()))
});
let request = r#"{"jsonrpc": "2.0", "method": "say_hello", "params": [42, 23], "id": 1}"#;
let response = r#"{"jsonrpc":"2.0","result":"hello","id":1}"#;
assert_eq!(io.handle_request_sync(request), Some(response.to_owned()));
}
```
### Asynchronous responses
`main.rs`
```rust
use jsonrpc_core::*;
use jsonrpc_core::futures::Future;
fn main() {
let io = IoHandler::new();
io.add_async_method("say_hello", |_params: Params| {
futures::finished(Value::String("hello".into()))
});
let request = r#"{"jsonrpc": "2.0", "method": "say_hello", "params": [42, 23], "id": 1}"#;
let response = r#"{"jsonrpc":"2.0","result":"hello","id":1}"#;
assert_eq!(io.handle_request(request).wait().unwrap(), Some(response.to_owned()));
}
```
### Publish-Subscribe
See examples directory.