66 lines
2.4 KiB
Rust
66 lines
2.4 KiB
Rust
// Copyright 2019-2021 Parity Technologies (UK) Ltd.
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//
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// Permission is hereby granted, free of charge, to any
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// person obtaining a copy of this software and associated
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// documentation files (the "Software"), to deal in the
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// Software without restriction, including without
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// limitation the rights to use, copy, modify, merge,
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// publish, distribute, sublicense, and/or sell copies of
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// the Software, and to permit persons to whom the Software
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// is furnished to do so, subject to the following
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// conditions:
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//
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// The above copyright notice and this permission notice
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// shall be included in all copies or substantial portions
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// of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
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// ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
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// TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
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// PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
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// SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
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// IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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use std::net::SocketAddr;
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use jsonrpsee::client_transport::ws::{Url, WsTransportClientBuilder};
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use jsonrpsee::core::client::{ClientBuilder, ClientT};
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use jsonrpsee::rpc_params;
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use jsonrpsee::server::{RpcModule, Server};
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#[tokio::main]
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async fn main() -> anyhow::Result<()> {
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tracing_subscriber::FmtSubscriber::builder()
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.with_env_filter(tracing_subscriber::EnvFilter::from_default_env())
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.try_init()
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.expect("setting default subscriber failed");
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let addr = run_server().await?;
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let uri = Url::parse(&format!("ws://{}", addr))?;
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let (tx, rx) = WsTransportClientBuilder::default().build(uri).await?;
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let client = ClientBuilder::default().build_with_tokio(tx, rx);
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let response: String = client.request("say_hello", rpc_params![]).await?;
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tracing::info!("response: {:?}", response);
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Ok(())
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}
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async fn run_server() -> anyhow::Result<SocketAddr> {
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let server = Server::builder().build("127.0.0.1:0").await?;
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let mut module = RpcModule::new(());
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module.register_method("say_hello", |_, _, _| "lo")?;
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let addr = server.local_addr()?;
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let handle = server.start(module);
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// In this example we don't care about doing shutdown so let's it run forever.
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// You may use the `ServerHandle` to shut it down or manage it yourself.
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tokio::spawn(handle.stopped());
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Ok(addr)
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}
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