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test_server.rs
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test_server.rs
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use std::sync::atomic::{AtomicUsize, Ordering};
use std::sync::{mpsc, Arc};
use std::{net, thread, time::Duration};
use actix_rt::{net::TcpStream, time::sleep};
use actix_server::Server;
use actix_service::fn_service;
fn unused_addr() -> net::SocketAddr {
let addr: net::SocketAddr = "127.0.0.1:0".parse().unwrap();
let socket = mio::net::TcpSocket::new_v4().unwrap();
socket.bind(addr).unwrap();
socket.set_reuseaddr(true).unwrap();
let tcp = socket.listen(32).unwrap();
tcp.local_addr().unwrap()
}
#[test]
fn test_bind() {
let addr = unused_addr();
let (tx, rx) = mpsc::channel();
let h = thread::spawn(move || {
actix_rt::System::new().block_on(async {
let srv = Server::build()
.workers(1)
.disable_signals()
.bind("test", addr, move || {
fn_service(|_| async { Ok::<_, ()>(()) })
})?
.run();
let _ = tx.send((srv.clone(), actix_rt::System::current()));
srv.await
})
});
let (srv, sys) = rx.recv().unwrap();
thread::sleep(Duration::from_millis(500));
assert!(net::TcpStream::connect(addr).is_ok());
let _ = srv.stop(true);
sys.stop();
h.join().unwrap().unwrap();
}
#[test]
fn test_listen() {
let addr = unused_addr();
let (tx, rx) = mpsc::channel();
let h = thread::spawn(move || {
let lst = net::TcpListener::bind(addr)?;
actix_rt::System::new().block_on(async {
let srv = Server::build()
.disable_signals()
.workers(1)
.listen("test", lst, move || {
fn_service(|_| async { Ok::<_, ()>(()) })
})?
.run();
let _ = tx.send((srv.clone(), actix_rt::System::current()));
srv.await
})
});
let (srv, sys) = rx.recv().unwrap();
thread::sleep(Duration::from_millis(500));
assert!(net::TcpStream::connect(addr).is_ok());
let _ = srv.stop(true);
sys.stop();
h.join().unwrap().unwrap();
}
#[test]
#[cfg(unix)]
fn test_start() {
use std::io::Read;
use actix_codec::{BytesCodec, Framed};
use bytes::Bytes;
use futures_util::sink::SinkExt;
let addr = unused_addr();
let (tx, rx) = mpsc::channel();
let h = thread::spawn(move || {
actix_rt::System::new().block_on(async {
let srv = Server::build()
.backlog(100)
.disable_signals()
.bind("test", addr, move || {
fn_service(|io: TcpStream| async move {
let mut f = Framed::new(io, BytesCodec);
f.send(Bytes::from_static(b"test")).await.unwrap();
Ok::<_, ()>(())
})
})?
.run();
let _ = tx.send((srv.clone(), actix_rt::System::current()));
srv.await
})
});
let (srv, sys) = rx.recv().unwrap();
let mut buf = [1u8; 4];
let mut conn = net::TcpStream::connect(addr).unwrap();
let _ = conn.read_exact(&mut buf);
assert_eq!(buf, b"test"[..]);
// pause
let _ = srv.pause();
thread::sleep(Duration::from_millis(200));
let mut conn = net::TcpStream::connect(addr).unwrap();
conn.set_read_timeout(Some(Duration::from_millis(100)))
.unwrap();
let res = conn.read_exact(&mut buf);
assert!(res.is_err());
// resume
let _ = srv.resume();
thread::sleep(Duration::from_millis(100));
assert!(net::TcpStream::connect(addr).is_ok());
assert!(net::TcpStream::connect(addr).is_ok());
assert!(net::TcpStream::connect(addr).is_ok());
let mut buf = [0u8; 4];
let mut conn = net::TcpStream::connect(addr).unwrap();
let _ = conn.read_exact(&mut buf);
assert_eq!(buf, b"test"[..]);
// stop
let _ = srv.stop(false);
sys.stop();
h.join().unwrap().unwrap();
thread::sleep(Duration::from_secs(1));
assert!(net::TcpStream::connect(addr).is_err());
}
#[actix_rt::test]
async fn test_max_concurrent_connections() {
// Note:
// A tcp listener would accept connects based on it's backlog setting.
//
// The limit test on the other hand is only for concurrent tcp stream limiting a work
// thread accept.
use tokio::io::AsyncWriteExt;
let addr = unused_addr();
let (tx, rx) = mpsc::channel();
let counter = Arc::new(AtomicUsize::new(0));
let counter_clone = counter.clone();
let max_conn = 3;
let h = thread::spawn(move || {
actix_rt::System::new().block_on(async {
let server = Server::build()
// Set a relative higher backlog.
.backlog(12)
// max connection for a worker is 3.
.max_concurrent_connections(max_conn)
.workers(1)
.disable_signals()
.bind("test", addr, move || {
let counter = counter.clone();
fn_service(move |_io: TcpStream| {
let counter = counter.clone();
async move {
counter.fetch_add(1, Ordering::SeqCst);
sleep(Duration::from_secs(20)).await;
counter.fetch_sub(1, Ordering::SeqCst);
Ok::<(), ()>(())
}
})
})?
.run();
let _ = tx.send((server.clone(), actix_rt::System::current()));
server.await
})
});
let (srv, sys) = rx.recv().unwrap();
let mut conns = vec![];
for _ in 0..12 {
let conn = tokio::net::TcpStream::connect(addr).await.unwrap();
conns.push(conn);
}
sleep(Duration::from_secs(5)).await;
// counter would remain at 3 even with 12 successful connection.
// and 9 of them remain in backlog.
assert_eq!(max_conn, counter_clone.load(Ordering::SeqCst));
for mut conn in conns {
conn.shutdown().await.unwrap();
}
srv.stop(false).await;
sys.stop();
h.join().unwrap().unwrap();
}
#[actix_rt::test]
async fn test_service_restart() {
use std::task::{Context, Poll};
use actix_service::{fn_factory, Service};
use futures_core::future::LocalBoxFuture;
use tokio::io::AsyncWriteExt;
struct TestService(Arc<AtomicUsize>);
impl Service<TcpStream> for TestService {
type Response = ();
type Error = ();
type Future = LocalBoxFuture<'static, Result<Self::Response, Self::Error>>;
fn poll_ready(&self, _: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
let TestService(ref counter) = self;
let c = counter.fetch_add(1, Ordering::SeqCst);
// Force the service to restart on first readiness check.
if c > 0 {
Poll::Ready(Ok(()))
} else {
Poll::Ready(Err(()))
}
}
fn call(&self, _: TcpStream) -> Self::Future {
Box::pin(async { Ok(()) })
}
}
let addr1 = unused_addr();
let addr2 = unused_addr();
let (tx, rx) = mpsc::channel();
let num = Arc::new(AtomicUsize::new(0));
let num2 = Arc::new(AtomicUsize::new(0));
let num_clone = num.clone();
let num2_clone = num2.clone();
let h = thread::spawn(move || {
let num = num.clone();
actix_rt::System::new().block_on(async {
let server = Server::build()
.backlog(1)
.disable_signals()
.bind("addr1", addr1, move || {
let num = num.clone();
fn_factory(move || {
let num = num.clone();
async move { Ok::<_, ()>(TestService(num)) }
})
})?
.bind("addr2", addr2, move || {
let num2 = num2.clone();
fn_factory(move || {
let num2 = num2.clone();
async move { Ok::<_, ()>(TestService(num2)) }
})
})?
.workers(1)
.run();
let _ = tx.send((server.clone(), actix_rt::System::current()));
server.await
})
});
let (server, sys) = rx.recv().unwrap();
for _ in 0..5 {
TcpStream::connect(addr1)
.await
.unwrap()
.shutdown()
.await
.unwrap();
TcpStream::connect(addr2)
.await
.unwrap()
.shutdown()
.await
.unwrap();
}
sleep(Duration::from_secs(3)).await;
assert!(num_clone.load(Ordering::SeqCst) > 5);
assert!(num2_clone.load(Ordering::SeqCst) > 5);
let _ = server.stop(false);
sys.stop();
h.join().unwrap().unwrap();
}
#[ignore]
#[actix_rt::test]
async fn worker_restart() {
use actix_service::{Service, ServiceFactory};
use futures_core::future::LocalBoxFuture;
use tokio::io::{AsyncReadExt, AsyncWriteExt};
struct TestServiceFactory(Arc<AtomicUsize>);
impl ServiceFactory<TcpStream> for TestServiceFactory {
type Response = ();
type Error = ();
type Config = ();
type Service = TestService;
type InitError = ();
type Future = LocalBoxFuture<'static, Result<Self::Service, Self::InitError>>;
fn new_service(&self, _: Self::Config) -> Self::Future {
let counter = self.0.fetch_add(1, Ordering::Relaxed);
Box::pin(async move { Ok(TestService(counter)) })
}
}
struct TestService(usize);
impl Service<TcpStream> for TestService {
type Response = ();
type Error = ();
type Future = LocalBoxFuture<'static, Result<Self::Response, Self::Error>>;
actix_service::always_ready!();
fn call(&self, stream: TcpStream) -> Self::Future {
let counter = self.0;
let mut stream = stream.into_std().unwrap();
use std::io::Write;
let str = counter.to_string();
let buf = str.as_bytes();
let mut written = 0;
while written < buf.len() {
if let Ok(n) = stream.write(&buf[written..]) {
written += n;
}
}
stream.flush().unwrap();
stream.shutdown(net::Shutdown::Write).unwrap();
// force worker 2 to restart service once.
if counter == 2 {
panic!("panic on purpose")
} else {
Box::pin(async { Ok(()) })
}
}
}
let addr = unused_addr();
let (tx, rx) = mpsc::channel();
let counter = Arc::new(AtomicUsize::new(1));
let h = thread::spawn(move || {
let counter = counter.clone();
actix_rt::System::new().block_on(async {
let server = Server::build()
.disable_signals()
.bind("addr", addr, move || TestServiceFactory(counter.clone()))?
.workers(2)
.run();
let _ = tx.send((server.clone(), actix_rt::System::current()));
server.await
})
});
let (server, sys) = rx.recv().unwrap();
sleep(Duration::from_secs(3)).await;
let mut buf = [0; 8];
// worker 1 would not restart and return it's id consistently.
let mut stream = TcpStream::connect(addr).await.unwrap();
let n = stream.read(&mut buf).await.unwrap();
let id = String::from_utf8_lossy(&buf[0..n]);
assert_eq!("1", id);
stream.shutdown().await.unwrap();
// worker 2 dead after return response.
let mut stream = TcpStream::connect(addr).await.unwrap();
let n = stream.read(&mut buf).await.unwrap();
let id = String::from_utf8_lossy(&buf[0..n]);
assert_eq!("2", id);
stream.shutdown().await.unwrap();
// request to worker 1
let mut stream = TcpStream::connect(addr).await.unwrap();
let n = stream.read(&mut buf).await.unwrap();
let id = String::from_utf8_lossy(&buf[0..n]);
assert_eq!("1", id);
stream.shutdown().await.unwrap();
// TODO: Remove sleep if it can pass CI.
sleep(Duration::from_secs(3)).await;
// worker 2 restarting and work goes to worker 1.
let mut stream = TcpStream::connect(addr).await.unwrap();
let n = stream.read(&mut buf).await.unwrap();
let id = String::from_utf8_lossy(&buf[0..n]);
assert_eq!("1", id);
stream.shutdown().await.unwrap();
// TODO: Remove sleep if it can pass CI.
sleep(Duration::from_secs(3)).await;
// worker 2 restarted but worker 1 was still the next to accept connection.
let mut stream = TcpStream::connect(addr).await.unwrap();
let n = stream.read(&mut buf).await.unwrap();
let id = String::from_utf8_lossy(&buf[0..n]);
assert_eq!("1", id);
stream.shutdown().await.unwrap();
// TODO: Remove sleep if it can pass CI.
sleep(Duration::from_secs(3)).await;
// worker 2 accept connection again but it's id is 3.
let mut stream = TcpStream::connect(addr).await.unwrap();
let n = stream.read(&mut buf).await.unwrap();
let id = String::from_utf8_lossy(&buf[0..n]);
assert_eq!("3", id);
stream.shutdown().await.unwrap();
let _ = server.stop(false);
sys.stop();
h.join().unwrap().unwrap();
}