#![allow(dead_code)]
use std::future::Future;
use std::pin::Pin;
use std::sync::{
atomic::{AtomicUsize, Ordering},
Arc, Mutex,
};
use hyper::client::HttpConnector;
use hyper::service::{make_service_fn, service_fn};
use hyper::{Body, Client, Request, Response, Server, Version};
pub use futures_util::{
future, FutureExt as _, StreamExt as _, TryFutureExt as _, TryStreamExt as _,
};
pub use hyper::{HeaderMap, StatusCode};
pub use std::net::SocketAddr;
#[allow(unused_macros)]
macro_rules! t {
(
$name:ident,
parallel: $range:expr
) => (
#[test]
fn $name() {
let mut c = vec![];
let mut s = vec![];
for _i in $range {
c.push((
__CReq {
uri: "/",
body: vec![b'x'; 8192],
..Default::default()
},
__CRes {
body: vec![b'x'; 8192],
..Default::default()
},
));
s.push((
__SReq {
uri: "/",
body: vec![b'x'; 8192],
..Default::default()
},
__SRes {
body: vec![b'x'; 8192],
..Default::default()
},
));
}
__run_test(__TestConfig {
client_version: 2,
client_msgs: c.clone(),
server_version: 2,
server_msgs: s.clone(),
parallel: true,
connections: 1,
proxy: false,
});
__run_test(__TestConfig {
client_version: 2,
client_msgs: c,
server_version: 2,
server_msgs: s,
parallel: true,
connections: 1,
proxy: true,
});
}
);
(
$name:ident,
client: $(
request: $(
$c_req_prop:ident: $c_req_val:tt,
)*;
response: $(
$c_res_prop:ident: $c_res_val:tt,
)*;
)*
server: $(
request: $(
$s_req_prop:ident: $s_req_val:tt,
)*;
response: $(
$s_res_prop:ident: $s_res_val:tt,
)*;
)*
) => (
#[test]
fn $name() {
let c = vec![$((
__CReq {
$($c_req_prop: __internal_map_prop!($c_req_prop: $c_req_val),)*
..Default::default()
},
__CRes {
$($c_res_prop: __internal_eq_prop!($c_res_prop: $c_res_val),)*
..Default::default()
}
),)*];
let s = vec![$((
__SReq {
$($s_req_prop: __internal_eq_prop!($s_req_prop: $s_req_val),)*
..Default::default()
},
__SRes {
$($s_res_prop: __internal_map_prop!($s_res_prop: $s_res_val),)*
..Default::default()
}
),)*];
__run_test(__TestConfig {
client_version: 1,
client_msgs: c.clone(),
server_version: 1,
server_msgs: s.clone(),
parallel: false,
connections: 1,
proxy: false,
});
__run_test(__TestConfig {
client_version: 2,
client_msgs: c.clone(),
server_version: 2,
server_msgs: s.clone(),
parallel: false,
connections: 1,
proxy: false,
});
__run_test(__TestConfig {
client_version: 1,
client_msgs: c.clone(),
server_version: 1,
server_msgs: s.clone(),
parallel: false,
connections: 1,
proxy: true,
});
__run_test(__TestConfig {
client_version: 2,
client_msgs: c,
server_version: 2,
server_msgs: s,
parallel: false,
connections: 1,
proxy: true,
});
}
);
}
macro_rules! __internal_map_prop {
(headers: $map:tt) => {{
#[allow(unused_mut)]
{
let mut headers = HeaderMap::new();
__internal_headers_map!(headers, $map);
headers
}
}};
($name:tt: $val:tt) => {{
__internal_req_res_prop!($name: $val)
}};
}
macro_rules! __internal_eq_prop {
(headers: $map:tt) => {{
#[allow(unused_mut)]
{
let mut headers = Vec::<std::sync::Arc<dyn Fn(&hyper::HeaderMap) + Send + Sync>>::new();
__internal_headers_eq!(headers, $map);
headers
}
}};
($name:tt: $val:tt) => {{
__internal_req_res_prop!($name: $val)
}};
}
macro_rules! __internal_req_res_prop {
(method: $prop_val:expr) => {
$prop_val
};
(status: $prop_val:expr) => {
StatusCode::from_u16($prop_val).expect("status code")
};
($prop_name:ident: $prop_val:expr) => {
From::from($prop_val)
};
}
macro_rules! __internal_headers_map {
($headers:ident, { $($name:expr => $val:expr,)* }) => {
$(
$headers.insert($name, $val.to_string().parse().expect("header value"));
)*
}
}
macro_rules! __internal_headers_eq {
(@pat $name: expr, $pat:pat) => {
std::sync::Arc::new(move |__hdrs: &hyper::HeaderMap| {
match __hdrs.get($name) {
$pat => (),
other => panic!("headers[{}] was not {}: {:?}", stringify!($name), stringify!($pat), other),
}
}) as std::sync::Arc<dyn Fn(&hyper::HeaderMap) + Send + Sync>
};
(@val $name: expr, NONE) => {{
__internal_headers_eq!(@pat $name, None);
}};
(@val $name: expr, SOME) => {{
__internal_headers_eq!(@pat $name, Some(_))
}};
(@val $name: expr, $val:expr) => ({
let __val = Option::from($val);
std::sync::Arc::new(move |__hdrs: &hyper::HeaderMap| {
if let Some(ref val) = __val {
assert_eq!(__hdrs.get($name).expect(stringify!($name)), val.to_string().as_str(), stringify!($name));
} else {
assert_eq!(__hdrs.get($name), None, stringify!($name));
}
}) as std::sync::Arc<dyn Fn(&hyper::HeaderMap) + Send + Sync>
});
($headers:ident, { $($name:expr => $val:tt,)* }) => {{
$(
$headers.push(__internal_headers_eq!(@val $name, $val));
)*
}}
}
#[derive(Clone, Debug)]
pub struct __CReq {
pub method: &'static str,
pub uri: &'static str,
pub headers: HeaderMap,
pub body: Vec<u8>,
}
impl Default for __CReq {
fn default() -> __CReq {
__CReq {
method: "GET",
uri: "/",
headers: HeaderMap::new(),
body: Vec::new(),
}
}
}
#[derive(Clone, Default)]
pub struct __CRes {
pub status: hyper::StatusCode,
pub body: Vec<u8>,
pub headers: __HeadersEq,
}
#[derive(Clone)]
pub struct __SReq {
pub method: &'static str,
pub uri: &'static str,
pub headers: __HeadersEq,
pub body: Vec<u8>,
}
impl Default for __SReq {
fn default() -> __SReq {
__SReq {
method: "GET",
uri: "/",
headers: Vec::new(),
body: Vec::new(),
}
}
}
#[derive(Clone, Debug, Default)]
pub struct __SRes {
pub status: hyper::StatusCode,
pub body: Vec<u8>,
pub headers: HeaderMap,
}
pub type __HeadersEq = Vec<Arc<dyn Fn(&HeaderMap) + Send + Sync>>;
pub struct __TestConfig {
pub client_version: usize,
pub client_msgs: Vec<(__CReq, __CRes)>,
pub server_version: usize,
pub server_msgs: Vec<(__SReq, __SRes)>,
pub parallel: bool,
pub connections: usize,
pub proxy: bool,
}
pub fn runtime() -> tokio::runtime::Runtime {
tokio::runtime::Builder::new_current_thread()
.enable_all()
.build()
.expect("new rt")
}
pub fn __run_test(cfg: __TestConfig) {
let _ = pretty_env_logger::try_init();
runtime().block_on(async_test(cfg));
}
async fn async_test(cfg: __TestConfig) {
assert_eq!(cfg.client_version, cfg.server_version);
let version = if cfg.client_version == 2 {
Version::HTTP_2
} else {
Version::HTTP_11
};
let connector = HttpConnector::new();
let client = Client::builder()
.http2_only(cfg.client_version == 2)
.build::<_, Body>(connector);
let serve_handles = Arc::new(Mutex::new(cfg.server_msgs));
let expected_connections = cfg.connections;
let mut cnt = 0;
let new_service = make_service_fn(move |_| {
cnt += 1;
assert!(
cnt <= expected_connections,
"server expected {} connections, received {}",
expected_connections,
cnt
);
let serve_handles = serve_handles.clone();
future::ok::<_, hyper::Error>(service_fn(move |req: Request<Body>| {
let (sreq, sres) = serve_handles.lock().unwrap().remove(0);
assert_eq!(req.uri().path(), sreq.uri, "client path");
assert_eq!(req.method(), &sreq.method, "client method");
assert_eq!(req.version(), version, "client version");
for func in &sreq.headers {
func(&req.headers());
}
let sbody = sreq.body;
hyper::body::to_bytes(req).map_ok(move |body| {
assert_eq!(body.as_ref(), sbody.as_slice(), "client body");
let mut res = Response::builder()
.status(sres.status)
.body(Body::from(sres.body))
.expect("Response::build");
*res.headers_mut() = sres.headers;
res
})
}))
});
let server = hyper::Server::bind(&SocketAddr::from(([127, 0, 0, 1], 0)))
.http2_only(cfg.server_version == 2)
.serve(new_service);
let mut addr = server.local_addr();
tokio::task::spawn(server.map(|result| {
result.expect("server error");
}));
if cfg.proxy {
let (proxy_addr, proxy) = naive_proxy(ProxyConfig {
connections: cfg.connections,
dst: addr,
version: cfg.server_version,
});
tokio::task::spawn(proxy);
addr = proxy_addr;
}
let make_request = Arc::new(
move |client: &Client<HttpConnector>, creq: __CReq, cres: __CRes| {
let uri = format!("http://{}{}", addr, creq.uri);
let mut req = Request::builder()
.method(creq.method)
.uri(uri)
.body(creq.body.into())
.expect("Request::build");
*req.headers_mut() = creq.headers;
let cstatus = cres.status;
let cheaders = cres.headers;
let cbody = cres.body;
client
.request(req)
.and_then(move |res| {
assert_eq!(res.status(), cstatus, "server status");
assert_eq!(res.version(), version, "server version");
for func in &cheaders {
func(&res.headers());
}
hyper::body::to_bytes(res)
})
.map_ok(move |body| {
assert_eq!(body.as_ref(), cbody.as_slice(), "server body");
})
.map(|res| res.expect("client error"))
},
);
let client_futures: Pin<Box<dyn Future<Output = ()> + Send>> = if cfg.parallel {
let mut client_futures = vec![];
for (creq, cres) in cfg.client_msgs {
client_futures.push(make_request(&client, creq, cres));
}
drop(client);
Box::pin(future::join_all(client_futures).map(|_| ()))
} else {
let mut client_futures: Pin<Box<dyn Future<Output = Client<HttpConnector>> + Send>> =
Box::pin(future::ready(client));
for (creq, cres) in cfg.client_msgs {
let mk_request = make_request.clone();
client_futures = Box::pin(client_futures.then(move |client| {
let fut = mk_request(&client, creq, cres);
fut.map(move |()| client)
}));
}
Box::pin(client_futures.map(|_| ()))
};
client_futures.await;
}
struct ProxyConfig {
connections: usize,
dst: SocketAddr,
version: usize,
}
fn naive_proxy(cfg: ProxyConfig) -> (SocketAddr, impl Future<Output = ()>) {
let client = Client::builder()
.http2_only(cfg.version == 2)
.build_http::<Body>();
let dst_addr = cfg.dst;
let max_connections = cfg.connections;
let counter = AtomicUsize::new(0);
let srv = Server::bind(&([127, 0, 0, 1], 0).into()).serve(make_service_fn(move |_| {
let prev = counter.fetch_add(1, Ordering::Relaxed);
assert!(max_connections > prev, "proxy max connections");
let client = client.clone();
future::ok::<_, hyper::Error>(service_fn(move |mut req| {
let uri = format!("http://{}{}", dst_addr, req.uri().path())
.parse()
.expect("proxy new uri parse");
*req.uri_mut() = uri;
client.request(req)
}))
}));
let proxy_addr = srv.local_addr();
(proxy_addr, srv.map(|res| res.expect("proxy error")))
}