Newer
Older
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
// Copyright 2019 Parity Technologies (UK) Ltd.
//
// Permission is hereby granted, free of charge, to any
// person obtaining a copy of this software and associated
// documentation files (the "Software"), to deal in the
// Software without restriction, including without
// limitation the rights to use, copy, modify, merge,
// publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software
// is furnished to do so, subject to the following
// conditions:
//
// The above copyright notice and this permission notice
// shall be included in all copies or substantial portions
// of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
// ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
// TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
// PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
// SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
// IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
use async_std::task;
use futures::channel::oneshot::{self, Sender};
use jsonrpsee::client::{WsClient, WsConfig, WsSubscription};
use jsonrpsee::types::jsonrpc::{JsonValue, Params};
use jsonrpsee::ws::WsServer;
const SOCK_ADDR: &str = "127.0.0.1:9966";
const SERVER_URI: &str = "ws://localhost:9966";
const NUM_SUBSCRIPTION_RESPONSES: usize = 10;
#[async_std::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
env_logger::init();
let (server_started_tx, server_started_rx) = oneshot::channel::<()>();
let _server = task::spawn(async move {
run_server(server_started_tx, SOCK_ADDR).await;
});
server_started_rx.await?;
let client = WsClient::new(SERVER_URI, WsConfig::default()).await?;
let mut subscribe_hello: WsSubscription<JsonValue> =
client.subscribe("subscribe_hello", Params::None, "unsubscribe_hello").await?;
let mut i = 0;
while i <= NUM_SUBSCRIPTION_RESPONSES {
let r = subscribe_hello.next().await;
log::debug!("received {:?}", r);
i += 1;
}
Ok(())
}
async fn run_server(server_started_tx: Sender<()>, url: &str) {
let server = WsServer::new(url).await.unwrap();
let mut subscription =
server.register_subscription("subscribe_hello".to_string(), "unsubscribe_hello".to_string()).unwrap();
server_started_tx.send(()).unwrap();
loop {
subscription.send(JsonValue::String("hello my friend".to_owned())).await.unwrap();
std::thread::sleep(std::time::Duration::from_secs(1));
}
}