Files
h2/tests/flow_control.rs
Oliver Gould 897bf84163 Use rustfmt to enforce consistent formatting
This change adds a .rustfmt.toml that includes ALL supported settings,
12 of which we have overridden to attempt to cater to our own
proclivities.

rustfmt is checked in the rust-nightly CI job.
2017-09-12 22:29:35 +00:00

606 lines
18 KiB
Rust

#[macro_use]
extern crate h2_test_support;
use h2_test_support::prelude::*;
// In this case, the stream & connection both have capacity, but capacity is not
// explicitly requested.
#[test]
fn send_data_without_requesting_capacity() {
let _ = ::env_logger::init();
let payload = [0; 1024];
let mock = mock_io::Builder::new()
.handshake()
.write(&[
// POST /
0, 0, 16, 1, 4, 0, 0, 0, 1, 131, 135, 65, 139, 157, 41,
172, 75, 143, 168, 233, 25, 151, 33, 233, 132,
])
.write(&[
// DATA
0, 4, 0, 0, 1, 0, 0, 0, 1,
])
.write(&payload[..])
.write(frames::SETTINGS_ACK)
// Read response
.read(&[0, 0, 1, 1, 5, 0, 0, 0, 1, 0x89])
.build();
let mut h2 = Client::handshake(mock).wait().unwrap();
let request = Request::builder()
.method(Method::POST)
.uri("https://http2.akamai.com/")
.body(())
.unwrap();
let mut stream = h2.request(request, false).unwrap();
// The capacity should be immediately allocated
assert_eq!(stream.capacity(), 0);
// Send the data
stream.send_data(payload[..].into(), true).unwrap();
// Get the response
let resp = h2.run(poll_fn(|| stream.poll_response())).unwrap();
assert_eq!(resp.status(), StatusCode::NO_CONTENT);
h2.wait().unwrap();
}
#[test]
fn release_capacity_sends_window_update() {
let _ = ::env_logger::init();
let payload = vec![0u8; 16_384];
let (io, srv) = mock::new();
let mock = srv.assert_client_handshake().unwrap()
.recv_settings()
.recv_frame(
frames::headers(1)
.request("GET", "https://http2.akamai.com/")
.eos()
)
.send_frame(
frames::headers(1)
.response(200)
)
.send_frame(frames::data(1, &payload[..]))
.send_frame(frames::data(1, &payload[..]))
.send_frame(frames::data(1, &payload[..]))
.recv_frame(
frames::window_update(0, 32_768)
)
.recv_frame(
frames::window_update(1, 32_768)
)
.send_frame(frames::data(1, &payload[..]).eos())
// gotta end the connection
.map(drop);
let h2 = Client::handshake(io).unwrap().and_then(|mut h2| {
let request = Request::builder()
.method(Method::GET)
.uri("https://http2.akamai.com/")
.body(())
.unwrap();
let req = h2.request(request, true).unwrap()
.unwrap()
// Get the response
.and_then(|resp| {
assert_eq!(resp.status(), StatusCode::OK);
let body = resp.into_parts().1;
body.into_future().unwrap()
})
// read some body to use up window size to below half
.and_then(|(buf, body)| {
assert_eq!(buf.unwrap().len(), payload.len());
body.into_future().unwrap()
})
.and_then(|(buf, body)| {
assert_eq!(buf.unwrap().len(), payload.len());
body.into_future().unwrap()
})
.and_then(|(buf, mut body)| {
let buf = buf.unwrap();
assert_eq!(buf.len(), payload.len());
body.release_capacity(buf.len() * 2).unwrap();
body.into_future().unwrap()
})
.and_then(|(buf, _)| {
assert_eq!(buf.unwrap().len(), payload.len());
Ok(())
});
h2.unwrap().join(req)
});
h2.join(mock).wait().unwrap();
}
#[test]
fn release_capacity_of_small_amount_does_not_send_window_update() {
let _ = ::env_logger::init();
let payload = [0; 16];
let (io, srv) = mock::new();
let mock = srv.assert_client_handshake().unwrap()
.recv_settings()
.recv_frame(
frames::headers(1)
.request("GET", "https://http2.akamai.com/")
.eos()
)
.send_frame(
frames::headers(1)
.response(200)
)
.send_frame(frames::data(1, &payload[..]).eos())
// gotta end the connection
.map(drop);
let h2 = Client::handshake(io).unwrap().and_then(|mut h2| {
let request = Request::builder()
.method(Method::GET)
.uri("https://http2.akamai.com/")
.body(())
.unwrap();
let req = h2.request(request, true).unwrap()
.unwrap()
// Get the response
.and_then(|resp| {
assert_eq!(resp.status(), StatusCode::OK);
let body = resp.into_parts().1;
body.into_future().unwrap()
})
// read the small body and then release it
.and_then(|(buf, mut body)| {
let buf = buf.unwrap();
assert_eq!(buf.len(), 16);
body.release_capacity(buf.len()).unwrap();
body.into_future().unwrap()
})
.and_then(|(buf, _)| {
assert!(buf.is_none());
Ok(())
});
h2.unwrap().join(req)
});
h2.join(mock).wait().unwrap();
}
#[test]
#[ignore]
fn expand_window_sends_window_update() {}
#[test]
#[ignore]
fn expand_window_calls_are_coalesced() {}
#[test]
fn recv_data_overflows_connection_window() {
let _ = ::env_logger::init();
let (io, srv) = mock::new();
let mock = srv.assert_client_handshake().unwrap()
.recv_settings()
.recv_frame(
frames::headers(1)
.request("GET", "https://http2.akamai.com/")
.eos()
)
.send_frame(
frames::headers(1)
.response(200)
)
// fill the whole window
.send_frame(frames::data(1, vec![0u8; 16_384]))
.send_frame(frames::data(1, vec![0u8; 16_384]))
.send_frame(frames::data(1, vec![0u8; 16_384]))
.send_frame(frames::data(1, vec![0u8; 16_383]))
// this frame overflows the window!
.send_frame(frames::data(1, vec![0u8; 128]).eos())
// expecting goaway for the conn, not stream
.recv_frame(frames::go_away(0).flow_control());
// connection is ended by client
let h2 = Client::handshake(io).unwrap().and_then(|mut h2| {
let request = Request::builder()
.method(Method::GET)
.uri("https://http2.akamai.com/")
.body(())
.unwrap();
let req = h2.request(request, true)
.unwrap()
.unwrap()
.and_then(|resp| {
assert_eq!(resp.status(), StatusCode::OK);
let body = resp.into_parts().1;
body.concat2().unwrap()
/* FIXME: body stream should error also
.then(|res| {
let err = res.unwrap_err();
assert_eq!(
err.to_string(),
"protocol error: flow-control protocol violated"
);
Ok::<(), ()>(())
})
*/
});
// client should see a flow control error
let conn = h2.then(|res| {
let err = res.unwrap_err();
assert_eq!(err.to_string(),
"protocol error: flow-control protocol violated");
Ok::<(), ()>(())
});
conn.unwrap().join(req)
});
h2.join(mock).wait().unwrap();
}
#[test]
#[ignore]
fn recv_data_overflows_stream_window() {
// this tests for when streams have smaller windows than their connection
}
#[test]
#[ignore]
fn recv_window_update_causes_overflow() {
// A received window update causes the window to overflow.
}
#[test]
fn stream_close_by_data_frame_releases_capacity() {
let _ = ::env_logger::init();
let (m, mock) = mock::new();
let window_size = frame::DEFAULT_INITIAL_WINDOW_SIZE as usize;
let h2 = Client::handshake(m).unwrap().and_then(|mut h2| {
let request = Request::builder()
.method(Method::POST)
.uri("https://http2.akamai.com/")
.body(())
.unwrap();
// Send request
let mut s1 = h2.request(request, false).unwrap();
// This effectively reserves the entire connection window
s1.reserve_capacity(window_size);
// The capacity should be immediately available as nothing else is
// happening on the stream.
assert_eq!(s1.capacity(), window_size);
let request = Request::builder()
.method(Method::POST)
.uri("https://http2.akamai.com/")
.body(())
.unwrap();
// Create a second stream
let mut s2 = h2.request(request, false).unwrap();
// Request capacity
s2.reserve_capacity(5);
// There should be no available capacity (as it is being held up by
// the previous stream
assert_eq!(s2.capacity(), 0);
// Closing the previous stream by sending an empty data frame will
// release the capacity to s2
s1.send_data("".into(), true).unwrap();
// The capacity should be available
assert_eq!(s2.capacity(), 5);
// Send the frame
s2.send_data("hello".into(), true).unwrap();
// Wait for the connection to close
h2.unwrap()
});
let mock = mock.assert_client_handshake().unwrap()
// Get the first frame
.and_then(|(_, mock)| mock.into_future().unwrap())
.and_then(|(frame, mock)| {
let request = assert_headers!(frame.unwrap());
assert_eq!(request.stream_id(), 1);
assert!(!request.is_end_stream());
mock.into_future().unwrap()
})
.and_then(|(frame, mock)| {
let request = assert_headers!(frame.unwrap());
assert_eq!(request.stream_id(), 3);
assert!(!request.is_end_stream());
mock.into_future().unwrap()
})
.and_then(|(frame, mock)| {
let data = assert_data!(frame.unwrap());
assert_eq!(data.stream_id(), 1);
assert_eq!(data.payload().len(), 0);
assert!(data.is_end_stream());
mock.into_future().unwrap()
})
.and_then(|(frame, _)| {
let data = assert_data!(frame.unwrap());
assert_eq!(data.stream_id(), 3);
assert_eq!(data.payload(), "hello");
assert!(data.is_end_stream());
Ok(())
});
let _ = h2.join(mock).wait().unwrap();
}
#[test]
fn stream_close_by_trailers_frame_releases_capacity() {
let _ = ::env_logger::init();
let (m, mock) = mock::new();
let window_size = frame::DEFAULT_INITIAL_WINDOW_SIZE as usize;
let h2 = Client::handshake(m).unwrap().and_then(|mut h2| {
let request = Request::builder()
.method(Method::POST)
.uri("https://http2.akamai.com/")
.body(())
.unwrap();
// Send request
let mut s1 = h2.request(request, false).unwrap();
// This effectively reserves the entire connection window
s1.reserve_capacity(window_size);
// The capacity should be immediately available as nothing else is
// happening on the stream.
assert_eq!(s1.capacity(), window_size);
let request = Request::builder()
.method(Method::POST)
.uri("https://http2.akamai.com/")
.body(())
.unwrap();
// Create a second stream
let mut s2 = h2.request(request, false).unwrap();
// Request capacity
s2.reserve_capacity(5);
// There should be no available capacity (as it is being held up by
// the previous stream
assert_eq!(s2.capacity(), 0);
// Closing the previous stream by sending a trailers frame will
// release the capacity to s2
s1.send_trailers(Default::default()).unwrap();
// The capacity should be available
assert_eq!(s2.capacity(), 5);
// Send the frame
s2.send_data("hello".into(), true).unwrap();
// Wait for the connection to close
h2.unwrap()
});
let mock = mock.assert_client_handshake().unwrap()
// Get the first frame
.and_then(|(_, mock)| mock.into_future().unwrap())
.and_then(|(frame, mock)| {
let request = assert_headers!(frame.unwrap());
assert_eq!(request.stream_id(), 1);
assert!(!request.is_end_stream());
mock.into_future().unwrap()
})
.and_then(|(frame, mock)| {
let request = assert_headers!(frame.unwrap());
assert_eq!(request.stream_id(), 3);
assert!(!request.is_end_stream());
mock.into_future().unwrap()
})
.and_then(|(frame, mock)| {
let trailers = assert_headers!(frame.unwrap());
assert_eq!(trailers.stream_id(), 1);
assert!(trailers.is_end_stream());
mock.into_future().unwrap()
})
.and_then(|(frame, _)| {
let data = assert_data!(frame.unwrap());
assert_eq!(data.stream_id(), 3);
assert_eq!(data.payload(), "hello");
assert!(data.is_end_stream());
Ok(())
});
let _ = h2.join(mock).wait().unwrap();
}
#[test]
#[ignore]
fn stream_close_by_send_reset_frame_releases_capacity() {}
#[test]
#[ignore]
fn stream_close_by_recv_reset_frame_releases_capacity() {}
use futures::{Async, Poll};
struct GetResponse {
stream: Option<client::Stream<Bytes>>,
}
impl Future for GetResponse {
type Item = (Response<client::Body<Bytes>>, client::Stream<Bytes>);
type Error = ();
fn poll(&mut self) -> Poll<Self::Item, Self::Error> {
let response = match self.stream.as_mut().unwrap().poll_response() {
Ok(Async::Ready(v)) => v,
Ok(Async::NotReady) => return Ok(Async::NotReady),
Err(e) => panic!("unexpected error; {:?}", e),
};
Ok(Async::Ready((response, self.stream.take().unwrap())))
}
}
#[test]
fn recv_window_update_on_stream_closed_by_data_frame() {
let _ = ::env_logger::init();
let (io, srv) = mock::new();
let h2 = Client::handshake(io)
.unwrap()
.and_then(|mut h2| {
let request = Request::builder()
.method(Method::POST)
.uri("https://http2.akamai.com/")
.body(())
.unwrap();
let stream = h2.request(request, false).unwrap();
// Wait for the response
h2.drive(GetResponse {
stream: Some(stream),
})
})
.and_then(|(h2, (response, mut stream))| {
assert_eq!(response.status(), StatusCode::OK);
// Send a data frame, this will also close the connection
stream.send_data("hello".into(), true).unwrap();
// Wait for the connection to close
h2.unwrap()
});
let srv = srv.assert_client_handshake()
.unwrap()
.recv_settings()
.recv_frame(frames::headers(1).request("POST", "https://http2.akamai.com/"))
.send_frame(frames::headers(1).response(200))
.recv_frame(frames::data(1, "hello").eos())
.send_frame(frames::window_update(1, 5))
.map(drop);
let _ = h2.join(srv).wait().unwrap();
}
#[test]
fn reserved_capacity_assigned_in_multi_window_updates() {
let _ = ::env_logger::init();
let (io, srv) = mock::new();
let h2 = Client::handshake(io)
.unwrap()
.and_then(|mut h2| {
let request = Request::builder()
.method(Method::POST)
.uri("https://http2.akamai.com/")
.body(())
.unwrap();
let mut stream = h2.request(request, false).unwrap();
// Consume the capacity
let payload = vec![0; frame::DEFAULT_INITIAL_WINDOW_SIZE as usize];
stream.send_data(payload.into(), false).unwrap();
// Reserve more data than we want
stream.reserve_capacity(10);
h2.drive(util::wait_for_capacity(stream, 5))
})
.and_then(|(h2, mut stream)| {
stream.send_data("hello".into(), false).unwrap();
stream.send_data("world".into(), true).unwrap();
h2.drive(GetResponse {
stream: Some(stream),
})
})
.and_then(|(h2, (response, _))| {
assert_eq!(response.status(), StatusCode::NO_CONTENT);
// Wait for the connection to close
h2.unwrap()
});
let srv = srv.assert_client_handshake().unwrap()
.recv_settings()
.recv_frame(
frames::headers(1)
.request("POST", "https://http2.akamai.com/")
)
.recv_frame(frames::data(1, vec![0u8; 16_384]))
.recv_frame(frames::data(1, vec![0u8; 16_384]))
.recv_frame(frames::data(1, vec![0u8; 16_384]))
.recv_frame(frames::data(1, vec![0u8; 16_383]))
.idle_ms(100)
// Increase the connection window
.send_frame(
frames::window_update(0, 10))
// Incrementally increase the stream window
.send_frame(
frames::window_update(1, 4))
.idle_ms(50)
.send_frame(
frames::window_update(1, 1))
// Receive first chunk
.recv_frame(frames::data(1, "hello"))
.send_frame(
frames::window_update(1, 5))
// Receive second chunk
.recv_frame(
frames::data(1, "world").eos())
.send_frame(
frames::headers(1)
.response(204)
.eos()
)
/*
.recv_frame(frames::data(1, "hello").eos())
.send_frame(frames::window_update(1, 5))
*/
.map(drop);
let _ = h2.join(srv).wait().unwrap();
}