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// Copyright 2019-2021 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.
#![cfg(test)]
use std::sync::Arc;
use std::time::Duration;
use helpers::{http_server, http_server_with_access_control, websocket_server, websocket_server_with_subscription};
use jsonrpsee::core::client::{ClientT, IdKind, Subscription, SubscriptionClientT};
use jsonrpsee::core::error::{SubscriptionClosed, SubscriptionClosedReason};
use jsonrpsee::core::{Error, JsonValue};
use jsonrpsee::http_client::HttpClientBuilder;
use jsonrpsee::rpc_params;
use jsonrpsee::ws_client::WsClientBuilder;
use tokio::time::interval;
use tokio_stream::wrappers::IntervalStream;
#[tokio::test]
async fn ws_subscription_works() {
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let (server_addr, _) = websocket_server_with_subscription().await;
let server_url = format!("ws://{}", server_addr);
let client = WsClientBuilder::default().build(&server_url).await.unwrap();
let mut hello_sub: Subscription<String> =
client.subscribe("subscribe_hello", None, "unsubscribe_hello").await.unwrap();
let mut foo_sub: Subscription<u64> = client.subscribe("subscribe_foo", None, "unsubscribe_foo").await.unwrap();
let hello = hello_sub.next().await.unwrap().unwrap();
let foo = foo_sub.next().await.unwrap().unwrap();
assert_eq!(hello, "hello from subscription".to_string());
assert_eq!(foo, 1337);
#[tokio::test]
async fn ws_subscription_with_input_works() {
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let (server_addr, _) = websocket_server_with_subscription().await;
let server_url = format!("ws://{}", server_addr);
let client = WsClientBuilder::default().build(&server_url).await.unwrap();
let mut add_one: Subscription<u64> =
client.subscribe("subscribe_add_one", rpc_params![1], "unsubscribe_add_one").await.unwrap();
for i in 2..4 {
let next = add_one.next().await.unwrap().unwrap();
assert_eq!(next, i);
}
}
#[tokio::test]
async fn ws_method_call_works() {
let server_url = format!("ws://{}", server_addr);
let client = WsClientBuilder::default().build(&server_url).await.unwrap();
let response: String = client.request("say_hello", None).await.unwrap();
assert_eq!(&response, "hello");
#[tokio::test]
async fn ws_method_call_str_id_works() {
let server_addr = websocket_server().await;
let server_url = format!("ws://{}", server_addr);
let client = WsClientBuilder::default().id_format(IdKind::String).build(&server_url).await.unwrap();
let response: String = client.request("say_hello", None).await.unwrap();
assert_eq!(&response, "hello");
}
#[tokio::test]
async fn http_method_call_works() {
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let (server_addr, _handle) = http_server().await;
let uri = format!("http://{}", server_addr);
let client = HttpClientBuilder::default().build(&uri).unwrap();
let response: String = client.request("say_hello", None).await.unwrap();
#[tokio::test]
async fn http_method_call_str_id_works() {
let (server_addr, _handle) = http_server().await;
let uri = format!("http://{}", server_addr);
let client = HttpClientBuilder::default().id_format(IdKind::String).build(&uri).unwrap();
let response: String = client.request("say_hello", None).await.unwrap();
assert_eq!(&response, "hello");
}
#[tokio::test]
async fn http_concurrent_method_call_limits_works() {
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let (server_addr, _handle) = http_server().await;
let uri = format!("http://{}", server_addr);
let client = HttpClientBuilder::default().max_concurrent_requests(1).build(&uri).unwrap();
let (first, second) =
tokio::join!(client.request::<String>("say_hello", None), client.request::<String>("say_hello", None),);
assert!(first.is_ok());
assert!(matches!(second, Err(Error::MaxSlotsExceeded)));
}
#[tokio::test]
async fn ws_subscription_several_clients() {
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let (server_addr, _) = websocket_server_with_subscription().await;
let server_url = format!("ws://{}", server_addr);
let mut clients = Vec::with_capacity(10);
for _ in 0..10 {
let client = WsClientBuilder::default().build(&server_url).await.unwrap();
let hello_sub: Subscription<JsonValue> =
client.subscribe("subscribe_hello", None, "unsubscribe_hello").await.unwrap();
let foo_sub: Subscription<JsonValue> =
client.subscribe("subscribe_foo", None, "unsubscribe_foo").await.unwrap();
clients.push((client, hello_sub, foo_sub))
}
}
#[tokio::test]
async fn ws_subscription_several_clients_with_drop() {
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let (server_addr, _) = websocket_server_with_subscription().await;
let server_url = format!("ws://{}", server_addr);
let mut clients = Vec::with_capacity(10);
for _ in 0..10 {
let client =
WsClientBuilder::default().max_notifs_per_subscription(u32::MAX as usize).build(&server_url).await.unwrap();
let hello_sub: Subscription<String> =
client.subscribe("subscribe_hello", None, "unsubscribe_hello").await.unwrap();
let foo_sub: Subscription<u64> = client.subscribe("subscribe_foo", None, "unsubscribe_foo").await.unwrap();
clients.push((client, hello_sub, foo_sub))
}
for _ in 0..10 {
for (_client, hello_sub, foo_sub) in &mut clients {
let hello = hello_sub.next().await.unwrap().unwrap();
let foo = foo_sub.next().await.unwrap().unwrap();
assert_eq!(&hello, "hello from subscription");
assert_eq!(foo, 1337);
let (client, hello_sub, foo_sub) = clients.remove(i);
drop(hello_sub);
drop(foo_sub);
assert!(client.is_connected());
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// make sure nothing weird happened after dropping half of the clients (should be `unsubscribed` in the server)
// would be good to know that subscriptions actually were removed but not possible to verify at
// this layer.
for _ in 0..10 {
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for (client, hello_sub, foo_sub) in &mut clients {
assert!(client.is_connected());
let hello = hello_sub.next().await.unwrap().unwrap();
let foo = foo_sub.next().await.unwrap().unwrap();
assert_eq!(&hello, "hello from subscription");
assert_eq!(foo, 1337);
}
}
}
#[tokio::test]
async fn ws_subscription_without_polling_doesnt_make_client_unuseable() {
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let (server_addr, _) = websocket_server_with_subscription().await;
let server_url = format!("ws://{}", server_addr);
let client = WsClientBuilder::default().max_notifs_per_subscription(4).build(&server_url).await.unwrap();
let mut hello_sub: Subscription<JsonValue> =
client.subscribe("subscribe_hello", None, "unsubscribe_hello").await.unwrap();
// don't poll the subscription stream for 2 seconds, should be full now.
tokio::time::sleep(Duration::from_secs(2)).await;
// Capacity is `num_sender` + `capacity`
for _ in 0..5 {
assert!(hello_sub.next().await.unwrap().is_ok());
}
// NOTE: this is now unuseable and unregistered.
assert!(hello_sub.next().await.is_none());
// The client should still be useable => make sure it still works.
let _hello_req: JsonValue = client.request("say_hello", None).await.unwrap();
// The same subscription should be possible to register again.
let mut other_sub: Subscription<JsonValue> =
client.subscribe("subscribe_hello", None, "unsubscribe_hello").await.unwrap();
other_sub.next().await.unwrap().unwrap();
async fn ws_making_more_requests_than_allowed_should_not_deadlock() {
let server_url = format!("ws://{}", server_addr);
let client = Arc::new(WsClientBuilder::default().max_concurrent_requests(2).build(&server_url).await.unwrap());
for _ in 0..6 {
let c = client.clone();
requests.push(tokio::spawn(async move { c.request::<String>("say_hello", None).await }));
let _ = req.await.unwrap();
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#[tokio::test]
async fn http_making_more_requests_than_allowed_should_not_deadlock() {
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let (server_addr, _handle) = http_server().await;
let server_url = format!("http://{}", server_addr);
let client = HttpClientBuilder::default().max_concurrent_requests(2).build(&server_url).unwrap();
let client = Arc::new(client);
let mut requests = Vec::new();
for _ in 0..6 {
let c = client.clone();
requests.push(tokio::spawn(async move { c.request::<String>("say_hello", None).await }));
}
for req in requests {
let _ = req.await.unwrap();
}
}
let client = HttpClientBuilder::default().build("https://kusama-rpc.polkadot.io").unwrap();
let response: String = client.request("system_chain", None).await.unwrap();
assert_eq!(&response, "Kusama");
}
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#[tokio::test]
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async fn wss_works() {
let client = WsClientBuilder::default().build("wss://kusama-rpc.polkadot.io").await.unwrap();
let response: String = client.request("system_chain", None).await.unwrap();
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assert_eq!(&response, "Kusama");
}
#[tokio::test]
async fn ws_with_non_ascii_url_doesnt_hang_or_panic() {
let err = WsClientBuilder::default().build("wss://♥♥♥♥♥♥∀∂").await;
assert!(matches!(err, Err(Error::Transport(_))));
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}
#[tokio::test]
async fn http_with_non_ascii_url_doesnt_hang_or_panic() {
let err = HttpClientBuilder::default().build("http://♥♥♥♥♥♥∀∂");
assert!(matches!(err, Err(Error::Transport(_))));
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}
#[tokio::test]
async fn ws_unsubscribe_releases_request_slots() {
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let (server_addr, _) = websocket_server_with_subscription().await;
let server_url = format!("ws://{}", server_addr);
let client = WsClientBuilder::default().max_concurrent_requests(1).build(&server_url).await.unwrap();
let sub1: Subscription<JsonValue> = client.subscribe("subscribe_hello", None, "unsubscribe_hello").await.unwrap();
let _: Subscription<JsonValue> = client.subscribe("subscribe_hello", None, "unsubscribe_hello").await.unwrap();
#[tokio::test]
async fn server_should_be_able_to_close_subscriptions() {
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let (server_addr, _) = websocket_server_with_subscription().await;
let server_url = format!("ws://{}", server_addr);
let client = WsClientBuilder::default().build(&server_url).await.unwrap();
let mut sub: Subscription<String> = client.subscribe("subscribe_noop", None, "unsubscribe_noop").await.unwrap();
let res = sub.next().await;
assert!(matches!(res, Some(Err(Error::SubscriptionClosed(_)))));
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#[tokio::test]
async fn ws_close_pending_subscription_when_server_terminated() {
let (server_addr, handle) = websocket_server_with_subscription().await;
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let server_url = format!("ws://{}", server_addr);
let c1 = WsClientBuilder::default().build(&server_url).await.unwrap();
let mut sub: Subscription<String> = c1.subscribe("subscribe_hello", None, "unsubscribe_hello").await.unwrap();
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assert!(matches!(sub.next().await, Some(Ok(_))));
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let sub2: Result<Subscription<String>, _> = c1.subscribe("subscribe_hello", None, "unsubscribe_hello").await;
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// no new request should be accepted.
assert!(matches!(sub2, Err(_)));
for _ in 0..2 {
match sub.next().await {
// All good, exit test
None => return,
// Try again
_ => continue,
}
}
panic!("subscription keeps sending messages after server shutdown");
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}
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#[tokio::test]
async fn ws_server_should_stop_subscription_after_client_drop() {
use futures::{channel::mpsc, SinkExt, StreamExt};
use jsonrpsee::{ws_server::WsServerBuilder, RpcModule};
let server = WsServerBuilder::default().build("127.0.0.1:0").await.unwrap();
let server_url = format!("ws://{}", server.local_addr().unwrap());
let (tx, mut rx) = mpsc::channel(1);
let mut module = RpcModule::new(tx);
module
.register_subscription("subscribe_hello", "subscribe_hello", "unsubscribe_hello", |_, mut sink, mut tx| {
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tokio::spawn(async move {
let close_err = loop {
if let Err(Error::SubscriptionClosed(err)) = sink.send(&1) {
break err;
}
tokio::time::sleep(Duration::from_millis(100)).await;
};
let send_back = Arc::make_mut(&mut tx);
send_back.feed(close_err).await.unwrap();
});
Ok(())
})
.unwrap();
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let client = WsClientBuilder::default().build(&server_url).await.unwrap();
let mut sub: Subscription<usize> = client.subscribe("subscribe_hello", None, "unsubscribe_hello").await.unwrap();
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let res = sub.next().await.unwrap().unwrap();
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assert_eq!(res, 1);
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drop(client);
let close_err = rx.next().await.unwrap();
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// assert that the server received `SubscriptionClosed` after the client was dropped.
assert!(matches!(close_err.close_reason(), &SubscriptionClosedReason::ConnectionReset));
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}
#[tokio::test]
async fn ws_server_cancels_stream_after_reset_conn() {
tracing_subscriber::FmtSubscriber::builder()
.with_env_filter(tracing_subscriber::EnvFilter::from_default_env())
.try_init()
.expect("setting default subscriber failed");
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use futures::{channel::mpsc, SinkExt, StreamExt};
use jsonrpsee::{ws_server::WsServerBuilder, RpcModule};
let server = WsServerBuilder::default().build("127.0.0.1:0").await.unwrap();
let server_url = format!("ws://{}", server.local_addr().unwrap());
let (tx, mut rx) = mpsc::channel(1);
let mut module = RpcModule::new(tx);
module
.register_subscription("subscribe_never_produce", "n", "unsubscribe_never_produce", |_, sink, mut tx| {
// create stream that doesn't produce items.
let stream = futures::stream::empty::<usize>();
tokio::spawn(async move {
sink.pipe_from_stream(stream).await.unwrap();
let send_back = Arc::make_mut(&mut tx);
send_back.feed(()).await.unwrap();
});
Ok(())
})
.unwrap();
server.start(module).unwrap();
let client = WsClientBuilder::default().build(&server_url).await.unwrap();
let _sub1: Subscription<usize> =
client.subscribe("subscribe_never_produce", None, "unsubscribe_never_produce").await.unwrap();
let _sub2: Subscription<usize> =
client.subscribe("subscribe_never_produce", None, "unsubscribe_never_produce").await.unwrap();
// terminate connection.
drop(client);
assert_eq!(Some(()), rx.next().await, "subscription stream should be terminated after the client was dropped");
assert_eq!(Some(()), rx.next().await, "subscription stream should be terminated after the client was dropped");
}
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#[tokio::test]
async fn ws_server_cancels_sub_stream_after_err() {
use jsonrpsee::{ws_server::WsServerBuilder, RpcModule};
let err: &'static str = "error on the stream";
let server = WsServerBuilder::default().build("127.0.0.1:0").await.unwrap();
let server_url = format!("ws://{}", server.local_addr().unwrap());
let mut module = RpcModule::new(());
module
.register_subscription(
"subscribe_with_err_on_stream",
"n",
"unsubscribe_with_err_on_stream",
move |_, sink, _| {
// create stream that produce an error which will cancel the subscription.
let stream = futures::stream::iter(vec![Ok(1_u32), Err(err), Ok(2), Ok(3)]);
tokio::spawn(async move {
let _ = sink.pipe_from_try_stream(stream).await;
});
Ok(())
},
)
.unwrap();
server.start(module).unwrap();
let client = WsClientBuilder::default().build(&server_url).await.unwrap();
let mut sub: Subscription<usize> =
client.subscribe("subscribe_with_err_on_stream", None, "unsubscribe_with_err_on_stream").await.unwrap();
assert_eq!(sub.next().await.unwrap().unwrap(), 1);
let exp = SubscriptionClosed::new(SubscriptionClosedReason::Server(err.to_string()));
// The server closed down the subscription with the underlying error from the stream.
assert!(matches!(sub.next().await, Some(Err(Error::SubscriptionClosed(close_reason))) if close_reason == exp));
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assert!(sub.next().await.is_none());
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}
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#[tokio::test]
async fn ws_server_subscribe_with_stream() {
use futures::StreamExt;
use jsonrpsee::{ws_server::WsServerBuilder, RpcModule};
let server = WsServerBuilder::default().build("127.0.0.1:0").await.unwrap();
let server_url = format!("ws://{}", server.local_addr().unwrap());
let mut module = RpcModule::new(());
module
.register_subscription("subscribe_5_ints", "n", "unsubscribe_5_ints", |_, sink, _| {
tokio::spawn(async move {
let interval = interval(Duration::from_millis(50));
let stream = IntervalStream::new(interval).zip(futures::stream::iter(1..=5)).map(|(_, c)| c);
sink.pipe_from_stream(stream).await.unwrap();
});
Ok(())
})
.unwrap();
server.start(module).unwrap();
let client = WsClientBuilder::default().build(&server_url).await.unwrap();
let mut sub1: Subscription<usize> = client.subscribe("subscribe_5_ints", None, "unsubscribe_5_ints").await.unwrap();
let mut sub2: Subscription<usize> = client.subscribe("subscribe_5_ints", None, "unsubscribe_5_ints").await.unwrap();
let (r1, r2) = futures::future::try_join(
sub1.by_ref().take(2).try_collect::<Vec<_>>(),
sub2.by_ref().take(3).try_collect::<Vec<_>>(),
)
.await
.unwrap();
assert_eq!(r1, vec![1, 2]);
assert_eq!(r2, vec![1, 2, 3]);
// Be rude, don't run the destructor
std::mem::forget(sub2);
// sub1 is still in business, read remaining items.
assert_eq!(sub1.by_ref().take(3).try_collect::<Vec<usize>>().await.unwrap(), vec![3, 4, 5]);
let exp = SubscriptionClosed::new(SubscriptionClosedReason::Server("No close reason provided".to_string()));
// The server closed down the subscription it will send a close reason.
assert!(matches!(sub1.next().await, Some(Err(Error::SubscriptionClosed(close_reason))) if close_reason == exp));
}
#[tokio::test]
async fn ws_batch_works() {
let server_addr = websocket_server().await;
let server_url = format!("ws://{}", server_addr);
let client = WsClientBuilder::default().build(&server_url).await.unwrap();
let mut batch = Vec::new();
batch.push(("say_hello", rpc_params![]));
batch.push(("slow_hello", rpc_params![]));
let responses: Vec<String> = client.batch_request(batch).await.unwrap();
assert_eq!(responses, vec!["hello".to_string(), "hello".to_string()]);
}
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#[tokio::test]
async fn http_unsupported_methods_dont_work() {
use hyper::{Body, Client, Method, Request};
let (server_addr, _handle) = http_server().await;
let http_client = Client::new();
let uri = format!("http://{}", server_addr);
let req_is_client_error = |method| async {
let req = Request::builder()
.method(method)
.uri(&uri)
.header("content-type", "application/json")
.body(Body::from(r#"{ "jsonrpc": "2.0", method: "say_hello", "id": 1 }"#))
.expect("request builder");
let res = http_client.request(req).await.unwrap();
res.status().is_client_error()
};
for verb in [Method::GET, Method::PUT, Method::PATCH, Method::DELETE] {
assert!(req_is_client_error(verb).await);
}
for verb in [Method::POST] {
assert!(!req_is_client_error(verb).await);
}
}
#[tokio::test]
async fn http_correct_content_type_required() {
use hyper::{Body, Client, Method, Request};
let (server_addr, _handle) = http_server().await;
let http_client = Client::new();
let uri = format!("http://{}", server_addr);
// We don't set content-type at all
let req = Request::builder()
.method(Method::POST)
.uri(&uri)
.body(Body::from(r#"{ "jsonrpc": "2.0", method: "say_hello", "id": 1 }"#))
.expect("request builder");
let res = http_client.request(req).await.unwrap();
assert!(res.status().is_client_error());
// We use the wrong content-type
let req = Request::builder()
.method(Method::POST)
.uri(&uri)
.header("content-type", "application/text")
.body(Body::from(r#"{ "jsonrpc": "2.0", method: "say_hello", "id": 1 }"#))
.expect("request builder");
let res = http_client.request(req).await.unwrap();
assert!(res.status().is_client_error());
// We use the correct content-type
let req = Request::builder()
.method(Method::POST)
.uri(&uri)
.header("content-type", "application/json")
.body(Body::from(r#"{ "jsonrpc": "2.0", method: "say_hello", "id": 1 }"#))
.expect("request builder");
let res = http_client.request(req).await.unwrap();
assert!(res.status().is_success());
}
#[tokio::test]
async fn http_cors_preflight_works() {
use hyper::{Body, Client, Method, Request};
use jsonrpsee::http_server::AccessControlBuilder;
let acl = AccessControlBuilder::new().set_allowed_origins(vec!["https://foo.com"]).unwrap().build();
let (server_addr, _handle) = http_server_with_access_control(acl).await;
let http_client = Client::new();
let uri = format!("http://{}", server_addr);
// First, make a preflight request.
// See https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS#preflighted_requests for examples.
// See https://fetch.spec.whatwg.org/#http-cors-protocol for the spec.
let preflight_req = Request::builder()
.method(Method::OPTIONS)
.uri(&uri)
.header("host", "bar.com") // <- host that request is being sent _to_
.header("origin", "https://foo.com") // <- where request is being sent _from_
.header("access-control-request-method", "POST")
.header("access-control-request-headers", "content-type")
.body(Body::empty())
.expect("preflight request builder");
let has = |v: &[String], s| v.iter().any(|v| v == s);
let preflight_res = http_client.request(preflight_req).await.unwrap();
let preflight_headers = preflight_res.headers();
let allow_origins = comma_separated_header_values(preflight_headers, "access-control-allow-origin");
let allow_methods = comma_separated_header_values(preflight_headers, "access-control-allow-methods");
let allow_headers = comma_separated_header_values(preflight_headers, "access-control-allow-headers");
// We expect the preflight response to tell us that our origin, methods and headers are all OK to use.
// If they aren't, the browser will not make the actual request. Note that if these `access-control-*`
// headers aren't return, the default is that the origin/method/headers are not allowed, I think.
assert!(preflight_res.status().is_success());
assert!(has(&allow_origins, "https://foo.com") || has(&allow_origins, "*"));
assert!(has(&allow_methods, "post") || has(&allow_methods, "*"));
assert!(has(&allow_headers, "content-type") || has(&allow_headers, "*"));
// Assuming that that was successful, we now make the actual request. No CORS headers are needed here
// as the browser checked their validity in the preflight request.
let req = Request::builder()
.method(Method::POST)
.uri(&uri)
.header("host", "bar.com")
.header("origin", "https://foo.com")
.header("content-type", "application/json")
.body(Body::from(r#"{ "jsonrpc": "2.0", method: "say_hello", "id": 1 }"#))
.expect("actual request builder");
let res = http_client.request(req).await.unwrap();
assert!(res.status().is_success());
assert!(has(&allow_origins, "https://foo.com") || has(&allow_origins, "*"));
}
fn comma_separated_header_values(headers: &hyper::HeaderMap, header: &str) -> Vec<String> {
headers
.get_all(header)
.into_iter()
.flat_map(|value| value.to_str().unwrap().split(',').map(|val| val.trim()))
.map(|header| header.to_ascii_lowercase())
.collect()
}