[](https://travis-ci.org/apoelstra/rust-jsonrpc)
# Rust Version compatibility
This library is compatible with Rust **1.75.0** or higher.
# Rust JSONRPC Client
Rudimentary support for sending JSONRPC 2.0 requests and receiving responses.
As an example, hit a local bitcoind JSON-RPC endpoint and call the `uptime` command.
```rust
use jsonrpc::Client;
use jsonrpc::simple_http::{self, SimpleHttpTransport};
fn client(url: &str, user: &str, pass: &str) -> Result<Client, simple_http::Error> {
let t = SimpleHttpTransport::builder()
.url(url)?
.auth(user, Some(pass))
.build();
Ok(Client::with_transport(t))
}
// Demonstrate an example JSON-RCP call against bitcoind.
fn main() {
let client = client("localhost:18443", "user", "pass").expect("failed to create client");
let request = client.build_request("uptime", None);
let response = client.send_request(request).expect("send_request failed");
// For other commands this would be a struct matching the returned json.
let result: u64 = response.result().expect("response is an error, use check_error");
println!("bitcoind uptime: {}", result);
}
```