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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// option. This file may not be copied, modified, or distributed
// except according to those terms.
use std::{cell::RefCell, rc::Rc};
use neqo_common::{event::Provider, Header};
use neqo_crypto::AuthenticationStatus;
use neqo_http3::{
Http3Client, Http3ClientEvent, Http3OrWebTransportStream, Http3Parameters, Http3Server,
Http3ServerEvent, Http3State, WebTransportEvent, WebTransportRequest, WebTransportServerEvent,
WebTransportSessionAcceptAction,
};
use neqo_transport::{StreamId, StreamType};
use test_fixture::{
anti_replay, fixture_init, now, CountingConnectionIdGenerator, DEFAULT_ADDR, DEFAULT_ALPN_H3,
DEFAULT_KEYS, DEFAULT_SERVER_NAME,
};
fn connect() -> (Http3Client, Http3Server) {
fixture_init();
let mut client = Http3Client::new(
DEFAULT_SERVER_NAME,
Rc::new(RefCell::new(CountingConnectionIdGenerator::default())),
DEFAULT_ADDR,
DEFAULT_ADDR,
Http3Parameters::default().webtransport(true),
now(),
)
.expect("create a default client");
let mut server = Http3Server::new(
now(),
DEFAULT_KEYS,
DEFAULT_ALPN_H3,
anti_replay(),
Rc::new(RefCell::new(CountingConnectionIdGenerator::default())),
Http3Parameters::default().webtransport(true),
None,
)
.expect("create a server");
assert_eq!(client.state(), Http3State::Initializing);
let out = client.process(None, now());
assert_eq!(client.state(), Http3State::Initializing);
let out = server.process(out.as_dgram_ref(), now());
let out = client.process(out.as_dgram_ref(), now());
let out = server.process(out.as_dgram_ref(), now());
assert!(out.as_dgram_ref().is_none());
let authentication_needed = |e| matches!(e, Http3ClientEvent::AuthenticationNeeded);
assert!(client.events().any(authentication_needed));
client.authenticated(AuthenticationStatus::Ok, now());
let mut out = client.process(out.as_dgram_ref(), now()).dgram();
let connected = |e| matches!(e, Http3ClientEvent::StateChange(Http3State::Connected));
assert!(client.events().any(connected));
assert_eq!(client.state(), Http3State::Connected);
// Exchange H3 setttings
loop {
out = server.process(out.as_ref(), now()).dgram();
let dgram_present = out.is_some();
out = client.process(out.as_ref(), now()).dgram();
if out.is_none() && !dgram_present {
break;
}
}
(client, server)
}
fn exchange_packets(client: &mut Http3Client, server: &mut Http3Server) {
let mut out = None;
loop {
out = client.process(out.as_ref(), now()).dgram();
out = server.process(out.as_ref(), now()).dgram();
if out.is_none() {
break;
}
}
}
fn create_wt_session(client: &mut Http3Client, server: &mut Http3Server) -> WebTransportRequest {
let wt_session_id = client
.webtransport_create_session(now(), &("https", "something.com", "/"), &[])
.unwrap();
exchange_packets(client, server);
let mut wt_server_session = None;
while let Some(event) = server.next_event() {
match event {
Http3ServerEvent::WebTransport(WebTransportServerEvent::NewSession {
session,
headers,
}) => {
assert!(
headers
.iter()
.any(|h| h.name() == ":method" && h.value() == "CONNECT")
&& headers
.iter()
.any(|h| h.name() == ":protocol" && h.value() == "webtransport")
);
session
.response(&WebTransportSessionAcceptAction::Accept)
.unwrap();
wt_server_session = Some(session);
}
Http3ServerEvent::Data { .. } => {
panic!("There should not be any data events!");
}
_ => {}
}
}
exchange_packets(client, server);
let wt_session_negotiated_event = |e| {
matches!(
e,
Http3ClientEvent::WebTransport(WebTransportEvent::Session{
stream_id,
status,
headers,
}) if (
stream_id == wt_session_id &&
status == 200 &&
headers.contains(&Header::new(":status", "200"))
)
)
};
assert!(client.events().any(wt_session_negotiated_event));
let wt_server_session = wt_server_session.unwrap();
assert_eq!(wt_session_id, wt_server_session.stream_id());
wt_server_session
}
fn send_data_client(
client: &mut Http3Client,
server: &mut Http3Server,
wt_stream_id: StreamId,
data: &[u8],
) {
assert_eq!(client.send_data(wt_stream_id, data).unwrap(), data.len());
exchange_packets(client, server);
}
fn send_data_server(
client: &mut Http3Client,
server: &mut Http3Server,
wt_stream: &Http3OrWebTransportStream,
data: &[u8],
) {
assert_eq!(wt_stream.send_data(data).unwrap(), data.len());
exchange_packets(client, server);
}
fn receive_data_client(
client: &mut Http3Client,
expected_stream_id: StreamId,
new_stream: bool,
expected_data: &[u8],
expected_fin: bool,
) {
let mut new_stream_received = false;
let mut data_received = false;
while let Some(event) = client.next_event() {
match event {
Http3ClientEvent::WebTransport(WebTransportEvent::NewStream { stream_id, .. }) => {
assert_eq!(stream_id, expected_stream_id);
new_stream_received = true;
}
Http3ClientEvent::DataReadable { stream_id } => {
assert_eq!(stream_id, expected_stream_id);
let mut buf = [0; 100];
let (amount, fin) = client.read_data(now(), stream_id, &mut buf).unwrap();
assert_eq!(fin, expected_fin);
assert_eq!(amount, expected_data.len());
assert_eq!(&buf[..amount], expected_data);
data_received = true;
}
_ => {}
}
}
assert!(data_received);
assert_eq!(new_stream, new_stream_received);
}
fn receive_data_server(
client: &mut Http3Client,
server: &mut Http3Server,
stream_id: StreamId,
new_stream: bool,
expected_data: &[u8],
expected_fin: bool,
) -> Http3OrWebTransportStream {
exchange_packets(client, server);
let mut new_stream_received = false;
let mut data_received = false;
let mut wt_stream = None;
let mut stream_closed = false;
let mut recv_data = Vec::new();
while let Some(event) = server.next_event() {
match event {
Http3ServerEvent::WebTransport(WebTransportServerEvent::NewStream(request)) => {
assert_eq!(stream_id, request.stream_id());
new_stream_received = true;
}
Http3ServerEvent::Data {
mut data,
fin,
stream,
} => {
recv_data.append(&mut data);
stream_closed = fin;
data_received = true;
wt_stream = Some(stream);
}
_ => {}
}
}
assert_eq!(&recv_data[..], expected_data);
assert!(data_received);
assert_eq!(new_stream, new_stream_received);
assert_eq!(stream_closed, expected_fin);
wt_stream.unwrap()
}
#[test]
fn wt_client_stream_uni() {
const BUF_CLIENT: &[u8] = &[0; 10];
let (mut client, mut server) = connect();
let wt_session = create_wt_session(&mut client, &mut server);
let wt_stream = client
.webtransport_create_stream(wt_session.stream_id(), StreamType::UniDi)
.unwrap();
send_data_client(&mut client, &mut server, wt_stream, BUF_CLIENT);
exchange_packets(&mut client, &mut server);
receive_data_server(&mut client, &mut server, wt_stream, true, BUF_CLIENT, false);
}
#[test]
fn wt_client_stream_bidi() {
const BUF_CLIENT: &[u8] = &[0; 10];
const BUF_SERVER: &[u8] = &[1; 20];
let (mut client, mut server) = connect();
let wt_session = create_wt_session(&mut client, &mut server);
let wt_client_stream = client
.webtransport_create_stream(wt_session.stream_id(), StreamType::BiDi)
.unwrap();
send_data_client(&mut client, &mut server, wt_client_stream, BUF_CLIENT);
let wt_server_stream = receive_data_server(
&mut client,
&mut server,
wt_client_stream,
true,
BUF_CLIENT,
false,
);
send_data_server(&mut client, &mut server, &wt_server_stream, BUF_SERVER);
receive_data_client(&mut client, wt_client_stream, false, BUF_SERVER, false);
}
#[test]
fn wt_server_stream_uni() {
const BUF_SERVER: &[u8] = &[2; 30];
let (mut client, mut server) = connect();
let wt_session = create_wt_session(&mut client, &mut server);
let wt_server_stream = wt_session.create_stream(StreamType::UniDi).unwrap();
send_data_server(&mut client, &mut server, &wt_server_stream, BUF_SERVER);
receive_data_client(
&mut client,
wt_server_stream.stream_id(),
true,
BUF_SERVER,
false,
);
}
#[test]
fn wt_server_stream_bidi() {
const BUF_CLIENT: &[u8] = &[0; 10];
const BUF_SERVER: &[u8] = &[1; 20];
let (mut client, mut server) = connect();
let wt_session = create_wt_session(&mut client, &mut server);
let wt_server_stream = wt_session.create_stream(StreamType::BiDi).unwrap();
send_data_server(&mut client, &mut server, &wt_server_stream, BUF_SERVER);
receive_data_client(
&mut client,
wt_server_stream.stream_id(),
true,
BUF_SERVER,
false,
);
send_data_client(
&mut client,
&mut server,
wt_server_stream.stream_id(),
BUF_CLIENT,
);
assert_eq!(
receive_data_server(
&mut client,
&mut server,
wt_server_stream.stream_id(),
false,
BUF_CLIENT,
false
)
.stream_id(),
wt_server_stream.stream_id()
);
}