Files
h2/tests/flow_control.rs

1153 lines
36 KiB
Rust

#[macro_use]
pub mod support;
use 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 client, mut h2) = Client::handshake(mock).wait().unwrap();
let request = Request::builder()
.method(Method::POST)
.uri("https://http2.akamai.com/")
.body(())
.unwrap();
let (response, mut stream) = client.send_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(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 client, h2)| {
let request = Request::builder()
.method(Method::GET)
.uri("https://http2.akamai.com/")
.body(())
.unwrap();
let req = client.send_request(request, true).unwrap()
.0
.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().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 client, h2)| {
let request = Request::builder()
.method(Method::GET)
.uri("https://http2.akamai.com/")
.body(())
.unwrap();
let req = client.send_request(request, true).unwrap()
.0
.unwrap()
// Get the response
.and_then(|resp| {
assert_eq!(resp.status(), StatusCode::OK);
let body = resp.into_parts().1;
assert!(!body.is_end_stream());
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().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 client, h2)| {
let request = Request::builder()
.method(Method::GET)
.uri("https://http2.akamai.com/")
.body(())
.unwrap();
let req = client
.send_request(request, true)
.unwrap()
.0.unwrap()
.and_then(|resp| {
assert_eq!(resp.status(), StatusCode::OK);
let body = resp.into_parts().1;
body.concat2().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]
fn recv_data_overflows_stream_window() {
// this tests for when streams have smaller windows than their connection
let _ = ::env_logger::init();
let (io, srv) = mock::new();
let mock = srv.assert_client_handshake().unwrap()
.ignore_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]))
// this frame overflows the window!
.send_frame(frames::data(1, &[0; 16][..]).eos())
.recv_frame(frames::reset(1).flow_control())
.close();
let h2 = Client::builder()
.initial_window_size(16_384)
.handshake::<_, Bytes>(io)
.unwrap()
.and_then(|(mut client, conn)| {
let request = Request::builder()
.method(Method::GET)
.uri("https://http2.akamai.com/")
.body(())
.unwrap();
let req = client
.send_request(request, true)
.unwrap()
.0.unwrap()
.and_then(|resp| {
assert_eq!(resp.status(), StatusCode::OK);
let body = resp.into_parts().1;
body.concat2().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_window_update_causes_overflow() {
// A received window update causes the window to overflow.
}
#[test]
fn stream_error_release_connection_capacity() {
let _ = ::env_logger::init();
let (io, srv) = mock::new();
let srv = srv.assert_client_handshake()
.unwrap()
.recv_settings()
.recv_frame(
frames::headers(1)
.request("GET", "https://http2.akamai.com/")
.eos()
)
// we're sending the wrong content-length
.send_frame(
frames::headers(1)
.response(200)
.field("content-length", &*(16_384 * 3).to_string())
)
.send_frame(frames::data(1, vec![0; 16_384]))
.send_frame(frames::data(1, vec![0; 16_384]))
.send_frame(frames::data(1, vec![0; 10]).eos())
// mismatched content-length is a protocol error
.recv_frame(frames::reset(1).protocol_error())
// but then the capacity should be released automatically
.recv_frame(frames::window_update(0, 16_384 * 2 + 10))
.close();
let client = Client::handshake(io).unwrap()
.and_then(|(mut client, conn)| {
let request = Request::builder()
.uri("https://http2.akamai.com/")
.body(()).unwrap();
let req = client.send_request(request, true)
.unwrap()
.0.expect("response")
.and_then(|resp| {
assert_eq!(resp.status(), StatusCode::OK);
let mut body = resp.into_parts().1;
let mut cap = body.release_capacity().clone();
let to_release = 16_384 * 2;
let mut should_recv_bytes = to_release;
let mut should_recv_frames = 2;
body
.for_each(move |bytes| {
should_recv_bytes -= bytes.len();
should_recv_frames -= 1;
if should_recv_bytes == 0 {
assert_eq!(should_recv_bytes, 0);
}
Ok(())
})
.expect_err("body")
.map(move |err| {
assert_eq!(
err.to_string(),
"protocol error: unspecific protocol error detected"
);
cap.release_capacity(to_release).expect("release_capacity");
})
});
conn.drive(req.expect("response"))
.and_then(|(conn, _)| conn.expect("client"))
});
srv.join(client).wait().unwrap();
}
#[test]
fn stream_close_by_data_frame_releases_capacity() {
let _ = ::env_logger::init();
let (io, srv) = mock::new();
let window_size = frame::DEFAULT_INITIAL_WINDOW_SIZE as usize;
let h2 = Client::handshake(io).unwrap().and_then(|(mut client, h2)| {
let request = Request::builder()
.method(Method::POST)
.uri("https://http2.akamai.com/")
.body(())
.unwrap();
// Send request
let (resp1, mut s1) = client.send_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 (resp2, mut s2) = client.send_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();
// Drive both streams to prevent the handles from being dropped
// (which will send a RST_STREAM) before the connection is closed.
h2.drive(resp1)
.and_then(move |(h2, _)| h2.drive(resp2))
})
.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::headers(3).request("POST", "https://http2.akamai.com/"))
.send_frame(frames::headers(3).response(200))
.recv_frame(frames::data(1, &b""[..]).eos())
.recv_frame(frames::data(3, &b"hello"[..]).eos())
.close();
let _ = h2.join(srv).wait().unwrap();
}
#[test]
fn stream_close_by_trailers_frame_releases_capacity() {
let _ = ::env_logger::init();
let (io, srv) = mock::new();
let window_size = frame::DEFAULT_INITIAL_WINDOW_SIZE as usize;
let h2 = Client::handshake(io).unwrap().and_then(|(mut client, h2)| {
let request = Request::builder()
.method(Method::POST)
.uri("https://http2.akamai.com/")
.body(())
.unwrap();
// Send request
let (resp1, mut s1) = client.send_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 (resp2, mut s2) = client.send_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();
// Drive both streams to prevent the handles from being dropped
// (which will send a RST_STREAM) before the connection is closed.
h2.drive(resp1)
.and_then(move |(h2, _)| h2.drive(resp2))
})
.unwrap();
let srv = srv.assert_client_handshake().unwrap()
// Get the first frame
.recv_settings()
.recv_frame(
frames::headers(1)
.request("POST", "https://http2.akamai.com/")
)
.send_frame(frames::headers(1).response(200))
.recv_frame(
frames::headers(3)
.request("POST", "https://http2.akamai.com/")
)
.send_frame(frames::headers(3).response(200))
.recv_frame(frames::headers(1).eos())
.recv_frame(frames::data(3, &b"hello"[..]).eos())
.close();
let _ = h2.join(srv).wait().unwrap();
}
#[test]
#[ignore]
fn stream_close_by_send_reset_frame_releases_capacity() {}
#[test]
#[ignore]
fn stream_close_by_recv_reset_frame_releases_capacity() {}
#[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 client, h2)| {
let request = Request::builder()
.method(Method::POST)
.uri("https://http2.akamai.com/")
.body(())
.unwrap();
let (response, stream) = client.send_request(request, false).unwrap();
// Wait for the response
h2.drive(response.map(|response| (response, 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();
// keep `stream` from being dropped in order to prevent
// it from sending an RST_STREAM frame.
//
// i know this is kind of evil, but it's necessary to
// ensure that the stream is closed by the EOS frame,
// and not by the RST_STREAM.
std::mem::forget(stream);
// 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 client, h2)| {
let request = Request::builder()
.method(Method::POST)
.uri("https://http2.akamai.com/")
.body(())
.unwrap();
let (response, mut stream) = client.send_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)
.map(|stream| (response, stream)))
})
.and_then(|(h2, (response, mut stream))| {
stream.send_data("hello".into(), false).unwrap();
stream.send_data("world".into(), true).unwrap();
h2.drive(response)
})
.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();
}
#[test]
fn connection_notified_on_released_capacity() {
use futures::sync::oneshot;
use std::sync::mpsc;
use std::thread;
let _ = ::env_logger::init();
let (io, srv) = mock::new();
// We're going to run the connection on a thread in order to isolate task
// notifications. This test is here, in part, to ensure that the connection
// receives the appropriate notifications to send out window updates.
let (tx, rx) = mpsc::channel();
// Because threading is fun
let (settings_tx, settings_rx) = oneshot::channel();
let th1 = thread::spawn(move || {
srv.assert_client_handshake().unwrap()
.recv_settings()
.map(move |v| {
settings_tx.send(()).unwrap();
v
})
// Get the first request
.recv_frame(
frames::headers(1)
.request("GET", "https://example.com/a")
.eos())
// Get the second request
.recv_frame(
frames::headers(3)
.request("GET", "https://example.com/b")
.eos())
// Send the first response
.send_frame(frames::headers(1).response(200))
// Send the second response
.send_frame(frames::headers(3).response(200))
// Fill the connection window
.send_frame(frames::data(1, vec![0u8; 16_384]).eos())
.idle_ms(100)
.send_frame(frames::data(3, vec![0u8; 16_384]).eos())
// The window update is sent
.recv_frame(frames::window_update(0, 16_384))
.map(drop)
.wait().unwrap();
});
let th2 = thread::spawn(move || {
let (mut client, h2) = Client::handshake(io).wait().unwrap();
let (h2, _) = h2.drive(settings_rx).wait().unwrap();
let request = Request::get("https://example.com/a").body(()).unwrap();
tx.send(client.send_request(request, true).unwrap())
.unwrap();
let request = Request::get("https://example.com/b").body(()).unwrap();
tx.send(client.send_request(request, true).unwrap())
.unwrap();
// Run the connection to completion
h2.wait().unwrap();
});
// Get the two requests
let (a, _) = rx.recv().unwrap();
let (b, _) = rx.recv().unwrap();
// Get the first response
let response = a.wait().unwrap();
assert_eq!(response.status(), StatusCode::OK);
let (_, a) = response.into_parts();
// Get the next chunk
let (chunk, mut a) = a.into_future().wait().unwrap();
assert_eq!(16_384, chunk.unwrap().len());
// Get the second response
let response = b.wait().unwrap();
assert_eq!(response.status(), StatusCode::OK);
let (_, b) = response.into_parts();
// Get the next chunk
let (chunk, b) = b.into_future().wait().unwrap();
assert_eq!(16_384, chunk.unwrap().len());
// Wait a bit
thread::sleep(Duration::from_millis(100));
// Release the capacity
a.release_capacity().release_capacity(16_384).unwrap();
th1.join().unwrap();
th2.join().unwrap();
// Explicitly drop this after the joins so that the capacity doesn't get
// implicitly released before.
drop(b);
}
#[test]
fn recv_settings_removes_available_capacity() {
let _ = ::env_logger::init();
let (io, srv) = mock::new();
let mut settings = frame::Settings::default();
settings.set_initial_window_size(Some(0));
let srv = srv.assert_client_handshake_with_settings(settings).unwrap()
.recv_settings()
.recv_frame(
frames::headers(1)
.request("POST", "https://http2.akamai.com/")
)
.idle_ms(100)
.send_frame(frames::window_update(0, 11))
.send_frame(frames::window_update(1, 11))
.recv_frame(frames::data(1, "hello world").eos())
.send_frame(
frames::headers(1)
.response(204)
.eos()
)
.close();
let h2 = Client::handshake(io).unwrap()
.and_then(|(mut client, h2)| {
let request = Request::builder()
.method(Method::POST)
.uri("https://http2.akamai.com/")
.body(()).unwrap();
let (response, mut stream) = client.send_request(request, false).unwrap();
stream.reserve_capacity(11);
h2.drive(util::wait_for_capacity(stream, 11).map(|s| (response, s)))
})
.and_then(|(h2, (response, mut stream))| {
assert_eq!(stream.capacity(), 11);
stream.send_data("hello world".into(), true).unwrap();
h2.drive(response)
})
.and_then(|(h2, response)| {
assert_eq!(response.status(), StatusCode::NO_CONTENT);
// Wait for the connection to close
h2.unwrap()
});
let _ = h2.join(srv)
.wait().unwrap();
}
#[test]
fn recv_no_init_window_then_receive_some_init_window() {
let _ = ::env_logger::init();
let (io, srv) = mock::new();
let mut settings = frame::Settings::default();
settings.set_initial_window_size(Some(0));
let srv = srv.assert_client_handshake_with_settings(settings).unwrap()
.recv_settings()
.recv_frame(
frames::headers(1)
.request("POST", "https://http2.akamai.com/")
)
.idle_ms(100)
.send_frame(frames::settings().initial_window_size(10))
.recv_frame(frames::settings_ack())
.recv_frame(frames::data(1, "hello worl"))
.idle_ms(100)
.send_frame(frames::settings().initial_window_size(11))
.recv_frame(frames::settings_ack())
.recv_frame(frames::data(1, "d").eos())
.send_frame(
frames::headers(1)
.response(204)
.eos()
)
.close();
let h2 = Client::handshake(io).unwrap()
.and_then(|(mut client, h2)| {
let request = Request::builder()
.method(Method::POST)
.uri("https://http2.akamai.com/")
.body(()).unwrap();
let (response, mut stream) = client.send_request(request, false).unwrap();
stream.reserve_capacity(11);
h2.drive(util::wait_for_capacity(stream, 11).map(|s| (response, s)))
})
.and_then(|(h2, (response, mut stream))| {
assert_eq!(stream.capacity(), 11);
stream.send_data("hello world".into(), true).unwrap();
h2.drive(response)
})
.and_then(|(h2, response)| {
assert_eq!(response.status(), StatusCode::NO_CONTENT);
// Wait for the connection to close
h2.unwrap()
});
let _ = h2.join(srv)
.wait().unwrap();
}
#[test]
fn settings_lowered_capacity_returns_capacity_to_connection() {
use std::thread;
use std::sync::mpsc;
let _ = ::env_logger::init();
let (io, srv) = mock::new();
let (tx1, rx1) = mpsc::channel();
let (tx2, rx2) = mpsc::channel();
let window_size = frame::DEFAULT_INITIAL_WINDOW_SIZE as usize;
// Spawn the server on a thread
let th1 = thread::spawn(move || {
let srv = srv.assert_client_handshake().unwrap()
.recv_settings()
.wait().unwrap();
tx1.send(()).unwrap();
let srv = Ok::<_, ()>(srv).into_future()
.recv_frame(
frames::headers(1)
.request("POST", "https://example.com/one")
)
.recv_frame(
frames::headers(3)
.request("POST", "https://example.com/two")
)
.idle_ms(200)
// Remove all capacity from streams
.send_frame(frames::settings().initial_window_size(0))
.recv_frame(frames::settings_ack())
// Let stream 3 make progress
.send_frame(frames::window_update(3, 11))
.recv_frame(frames::data(3, "hello world").eos())
.wait().unwrap();
// Wait to get notified
//
// A timeout is used here to avoid blocking forever if there is a
// failure
let _ = rx2.recv_timeout(Duration::from_secs(5)).unwrap();
thread::sleep(Duration::from_millis(500));
// Reset initial window size
Ok::<_, ()>(srv).into_future()
.send_frame(frames::settings().initial_window_size(window_size as u32))
.recv_frame(frames::settings_ack())
// Get data from first stream
.recv_frame(frames::data(1, "hello world").eos())
// Send responses
.send_frame(
frames::headers(1)
.response(204)
.eos()
)
.send_frame(
frames::headers(3)
.response(204)
.eos()
)
.close()
.wait().unwrap();
});
let (mut client, h2) = Client::handshake(io).unwrap()
.wait().unwrap();
// Drive client connection
let th2 = thread::spawn(move || {
h2.wait().unwrap();
});
// Wait for server handshake to complete.
rx1.recv_timeout(Duration::from_secs(5)).unwrap();
let request = Request::post("https://example.com/one")
.body(()).unwrap();
let (resp1, mut stream1) = client.send_request(request, false).unwrap();
let request = Request::post("https://example.com/two")
.body(()).unwrap();
let (resp2, mut stream2) = client.send_request(request, false).unwrap();
// Reserve capacity for stream one, this will consume all connection level
// capacity
stream1.reserve_capacity(window_size);
let stream1 = util::wait_for_capacity(stream1, window_size).wait().unwrap();
// Now, wait for capacity on the other stream
stream2.reserve_capacity(11);
let mut stream2 = util::wait_for_capacity(stream2, 11).wait().unwrap();
// Send data on stream 2
stream2.send_data("hello world".into(), true).unwrap();
tx2.send(()).unwrap();
// Wait for capacity on stream 1
let mut stream1 = util::wait_for_capacity(stream1, 11).wait().unwrap();
stream1.send_data("hello world".into(), true).unwrap();
// Wait for responses..
let resp = resp1.wait().unwrap();
assert_eq!(resp.status(), StatusCode::NO_CONTENT);
let resp = resp2.wait().unwrap();
assert_eq!(resp.status(), StatusCode::NO_CONTENT);
th1.join().unwrap();
th2.join().unwrap();
}
#[test]
fn client_increase_target_window_size() {
let _ = ::env_logger::init();
let (io, srv) = mock::new();
let srv = srv.assert_client_handshake()
.unwrap()
.recv_settings()
.recv_frame(frames::window_update(0, (2 << 20) - 65_535))
.close();
let client = Client::handshake(io).unwrap()
.and_then(|(_client, mut conn)| {
conn.set_target_window_size(2 << 20);
conn.unwrap()
});
srv.join(client).wait().unwrap();
}
#[test]
fn increase_target_window_size_after_using_some() {
let _ = ::env_logger::init();
let (io, srv) = mock::new();
let srv = 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, vec![0; 16_384]).eos())
.recv_frame(frames::window_update(0, (2 << 20) - 65_535))
.close();
let client = Client::handshake(io).unwrap()
.and_then(|(mut client, conn)| {
let request = Request::builder()
.uri("https://http2.akamai.com/")
.body(()).unwrap();
let res = client.send_request(request, true).unwrap().0
.and_then(|res| {
// "leak" the capacity for now
res.into_parts().1.concat2()
});
conn.drive(res)
.and_then(|(mut conn, _bytes)| {
conn.set_target_window_size(2 << 20);
conn.unwrap()
})
});
srv.join(client).wait().unwrap();
}
#[test]
fn decrease_target_window_size() {
let _ = ::env_logger::init();
let (io, srv) = mock::new();
let srv = 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, vec![0; 16_384]))
.send_frame(frames::data(1, vec![0; 16_384]))
.send_frame(frames::data(1, vec![0; 16_384]))
.send_frame(frames::data(1, vec![0; 16_383]).eos())
.recv_frame(frames::window_update(0, 16_384))
.close();
let client = Client::handshake(io).unwrap()
.and_then(|(mut client, mut conn)| {
conn.set_target_window_size(16_384 * 2);
let request = Request::builder()
.uri("https://http2.akamai.com/")
.body(()).unwrap();
let (resp, _) = client.send_request(request, true).unwrap();
conn.drive(resp.expect("response"))
})
.and_then(|(mut conn, res)| {
conn.set_target_window_size(16_384);
let mut body = res.into_parts().1;
let mut cap = body.release_capacity().clone();
conn.drive(body.concat2().expect("concat"))
.and_then(move |(conn, bytes)| {
assert_eq!(bytes.len(), 65_535);
cap.release_capacity(bytes.len()).unwrap();
conn.expect("conn")
})
});
srv.join(client).wait().unwrap();
}
#[test]
fn server_target_window_size() {
let _ = ::env_logger::init();
let (io, client) = mock::new();
let client = client.assert_server_handshake()
.unwrap()
.recv_settings()
.recv_frame(frames::window_update(0, (2 << 20) - 65_535))
.close();
let srv = Server::handshake(io).unwrap()
.and_then(|mut conn| {
conn.set_target_window_size(2 << 20);
conn.into_future().unwrap()
});
srv.join(client).wait().unwrap();
}