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use futures::{AsyncReadExt, AsyncWriteExt};
use getrandom::getrandom;
use libp2p_core::transport::{DialOpts, PortUse};
use libp2p_core::{Endpoint, StreamMuxer, Transport as _};
use libp2p_identity::{Keypair, PeerId};
use libp2p_noise as noise;
use libp2p_webtransport_websys::{Config, Connection, Error, Stream, Transport};
use multiaddr::{Multiaddr, Protocol};
use multihash::Multihash;
use std::future::poll_fn;
use std::pin::Pin;
use wasm_bindgen::JsCast;
use wasm_bindgen_futures::{spawn_local, JsFuture};
use wasm_bindgen_test::{wasm_bindgen_test, wasm_bindgen_test_configure};
use web_sys::{window, Response};
wasm_bindgen_test_configure!(run_in_browser);
#[wasm_bindgen_test]
async fn single_conn_single_stream() {
let mut conn = new_connection_to_echo_server().await;
let mut stream = create_stream(&mut conn).await;
send_recv(&mut stream).await;
}
#[wasm_bindgen_test]
async fn single_conn_single_stream_incoming() {
let mut conn = new_connection_to_echo_server().await;
let mut stream = incoming_stream(&mut conn).await;
send_recv(&mut stream).await;
}
#[wasm_bindgen_test]
async fn single_conn_multiple_streams() {
let mut conn = new_connection_to_echo_server().await;
let mut tasks = Vec::new();
let mut streams = Vec::new();
for i in 0..30 {
let stream = if i % 2 == 0 {
create_stream(&mut conn).await
} else {
incoming_stream(&mut conn).await
};
streams.push(stream);
}
for stream in streams {
tasks.push(send_recv_task(stream));
}
futures::future::try_join_all(tasks).await.unwrap();
}
#[wasm_bindgen_test]
async fn multiple_conn_multiple_streams() {
let mut tasks = Vec::new();
let mut conns = Vec::new();
for _ in 0..10 {
let mut conn = new_connection_to_echo_server().await;
let mut streams = Vec::new();
for i in 0..10 {
let stream = if i % 2 == 0 {
create_stream(&mut conn).await
} else {
incoming_stream(&mut conn).await
};
streams.push(stream);
}
// If `conn` gets drop then its streams will close.
// Keep it alive by moving it to the outer scope.
conns.push(conn);
for stream in streams {
tasks.push(send_recv_task(stream));
}
}
futures::future::try_join_all(tasks).await.unwrap();
}
#[wasm_bindgen_test]
async fn multiple_conn_multiple_streams_sequential() {
for _ in 0..10 {
let mut conn = new_connection_to_echo_server().await;
for i in 0..10 {
let mut stream = if i % 2 == 0 {
create_stream(&mut conn).await
} else {
incoming_stream(&mut conn).await
};
send_recv(&mut stream).await;
}
}
}
#[wasm_bindgen_test]
async fn read_leftovers() {
let mut conn = new_connection_to_echo_server().await;
let mut stream = create_stream(&mut conn).await;
// Test that stream works
send_recv(&mut stream).await;
stream.write_all(b"hello").await.unwrap();
let mut buf = [0u8; 3];
// Read first half
let len = stream.read(&mut buf[..]).await.unwrap();
assert_eq!(len, 3);
assert_eq!(&buf[..len], b"hel");
// Read second half
let len = stream.read(&mut buf[..]).await.unwrap();
assert_eq!(len, 2);
assert_eq!(&buf[..len], b"lo");
}
#[wasm_bindgen_test]
async fn allow_read_after_closing_writer() {
let mut conn = new_connection_to_echo_server().await;
let mut stream = create_stream(&mut conn).await;
// Test that stream works
send_recv(&mut stream).await;
// Write random data
let mut send_buf = [0u8; 1024];
getrandom(&mut send_buf).unwrap();
stream.write_all(&send_buf).await.unwrap();
// Close writer by calling AsyncWrite::poll_close
stream.close().await.unwrap();
// Make sure writer is closed
stream.write_all(b"1").await.unwrap_err();
// We should be able to read
let mut recv_buf = [0u8; 1024];
stream.read_exact(&mut recv_buf).await.unwrap();
assert_eq!(send_buf, recv_buf);
}
#[wasm_bindgen_test]
async fn poll_outbound_error_after_connection_close() {
let mut conn = new_connection_to_echo_server().await;
// Make sure that poll_outbound works well before closing the connection
let mut stream = create_stream(&mut conn).await;
send_recv(&mut stream).await;
drop(stream);
poll_fn(|cx| Pin::new(&mut conn).poll_close(cx))
.await
.unwrap();
poll_fn(|cx| Pin::new(&mut conn).poll_outbound(cx))
.await
.expect_err("poll_outbound error after conn closed");
}
#[wasm_bindgen_test]
async fn poll_inbound_error_after_connection_close() {
let mut conn = new_connection_to_echo_server().await;
// Make sure that poll_inbound works well before closing the connection
let mut stream = incoming_stream(&mut conn).await;
send_recv(&mut stream).await;
drop(stream);
poll_fn(|cx| Pin::new(&mut conn).poll_close(cx))
.await
.unwrap();
poll_fn(|cx| Pin::new(&mut conn).poll_inbound(cx))
.await
.expect_err("poll_inbound error after conn closed");
}
#[wasm_bindgen_test]
async fn read_error_after_connection_drop() {
let mut conn = new_connection_to_echo_server().await;
let mut stream = create_stream(&mut conn).await;
send_recv(&mut stream).await;
drop(conn);
let mut buf = [0u8; 16];
stream
.read(&mut buf)
.await
.expect_err("read error after conn drop");
}
#[wasm_bindgen_test]
async fn read_error_after_connection_close() {
let mut conn = new_connection_to_echo_server().await;
let mut stream = create_stream(&mut conn).await;
send_recv(&mut stream).await;
poll_fn(|cx| Pin::new(&mut conn).poll_close(cx))
.await
.unwrap();
let mut buf = [0u8; 16];
stream
.read(&mut buf)
.await
.expect_err("read error after conn drop");
}
#[wasm_bindgen_test]
async fn write_error_after_connection_drop() {
let mut conn = new_connection_to_echo_server().await;
let mut stream = create_stream(&mut conn).await;
send_recv(&mut stream).await;
drop(conn);
let buf = [0u8; 16];
stream
.write(&buf)
.await
.expect_err("write error after conn drop");
}
#[wasm_bindgen_test]
async fn write_error_after_connection_close() {
let mut conn = new_connection_to_echo_server().await;
let mut stream = create_stream(&mut conn).await;
send_recv(&mut stream).await;
poll_fn(|cx| Pin::new(&mut conn).poll_close(cx))
.await
.unwrap();
let buf = [0u8; 16];
stream
.write(&buf)
.await
.expect_err("write error after conn drop");
}
#[wasm_bindgen_test]
async fn connect_without_peer_id() {
let mut addr = fetch_server_addr().await;
let keypair = Keypair::generate_ed25519();
// Remove peer id
addr.pop();
let mut transport = Transport::new(Config::new(&keypair));
transport
.dial(
addr,
DialOpts {
role: Endpoint::Dialer,
port_use: PortUse::Reuse,
},
)
.unwrap()
.await
.unwrap();
}
#[wasm_bindgen_test]
async fn error_on_unknown_peer_id() {
let mut addr = fetch_server_addr().await;
let keypair = Keypair::generate_ed25519();
// Remove peer id
addr.pop();
// Add an unknown one
addr.push(Protocol::P2p(PeerId::random()));
let mut transport = Transport::new(Config::new(&keypair));
let e = transport
.dial(
addr.clone(),
DialOpts {
role: Endpoint::Dialer,
port_use: PortUse::Reuse,
},
)
.unwrap()
.await
.unwrap_err();
assert!(matches!(e, Error::UnknownRemotePeerId));
}
#[wasm_bindgen_test]
async fn error_on_unknown_certhash() {
let mut addr = fetch_server_addr().await;
let keypair = Keypair::generate_ed25519();
// Remove peer id
let peer_id = addr.pop().unwrap();
// Add unknown certhash
addr.push(Protocol::Certhash(Multihash::wrap(1, b"1").unwrap()));
// Add peer id back
addr.push(peer_id);
let mut transport = Transport::new(Config::new(&keypair));
let e = transport
.dial(
addr.clone(),
DialOpts {
role: Endpoint::Dialer,
port_use: PortUse::Reuse,
},
)
.unwrap()
.await
.unwrap_err();
assert!(matches!(
e,
Error::Noise(noise::Error::UnknownWebTransportCerthashes(..))
));
}
async fn new_connection_to_echo_server() -> Connection {
let addr = fetch_server_addr().await;
let keypair = Keypair::generate_ed25519();
let mut transport = Transport::new(Config::new(&keypair));
let (_peer_id, conn) = transport
.dial(
addr,
DialOpts {
role: Endpoint::Dialer,
port_use: PortUse::Reuse,
},
)
.unwrap()
.await
.unwrap();
conn
}
/// Helper that returns the multiaddress of echo-server
///
/// It fetches the multiaddress via HTTP request to
/// 127.0.0.1:4455.
async fn fetch_server_addr() -> Multiaddr {
let url = "http://127.0.0.1:4455/";
let window = window().expect("failed to get browser window");
let value = JsFuture::from(window.fetch_with_str(url))
.await
.expect("fetch failed");
let resp = value.dyn_into::<Response>().expect("cast failed");
let text = resp.text().expect("text failed");
let text = JsFuture::from(text).await.expect("text promise failed");
text.as_string()
.filter(|s| !s.is_empty())
.expect("response not a text")
.parse()
.unwrap()
}
#[allow(unknown_lints, clippy::needless_pass_by_ref_mut)] // False positive.
async fn create_stream(conn: &mut Connection) -> Stream {
poll_fn(|cx| Pin::new(&mut *conn).poll_outbound(cx))
.await
.unwrap()
}
#[allow(unknown_lints, clippy::needless_pass_by_ref_mut)] // False positive.
async fn incoming_stream(conn: &mut Connection) -> Stream {
let mut stream = poll_fn(|cx| Pin::new(&mut *conn).poll_inbound(cx))
.await
.unwrap();
// For the stream to be initiated `echo-server` sends a single byte
let mut buf = [0u8; 1];
stream.read_exact(&mut buf).await.unwrap();
stream
}
fn send_recv_task(mut steam: Stream) -> oneshot::Receiver<()> {
let (tx, rx) = oneshot::channel();
spawn_local(async move {
send_recv(&mut steam).await;
tx.send(()).unwrap();
});
rx
}
async fn send_recv(stream: &mut Stream) {
let mut send_buf = [0u8; 1024];
let mut recv_buf = [0u8; 1024];
for _ in 0..30 {
getrandom(&mut send_buf).unwrap();
stream.write_all(&send_buf).await.unwrap();
stream.read_exact(&mut recv_buf).await.unwrap();
assert_eq!(send_buf, recv_buf);
}
}
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