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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
use crate::connection::Http3State;
use crate::send_message::SendMessageEvents;
use crate::Header;
use crate::RecvMessageEvents;
use neqo_transport::AppError;
use std::cell::RefCell;
use std::collections::VecDeque;
use std::rc::Rc;
#[derive(Debug, PartialOrd, Ord, PartialEq, Eq, Clone)]
pub(crate) enum Http3ServerConnEvent {
/// Headers are ready.
Headers {
stream_id: u64,
headers: Vec<Header>,
fin: bool,
},
/// Request data is ready.
DataReadable { stream_id: u64 },
//TODO: This is never used. Do we need it?
// Peer reset the stream.
//Reset { stream_id: u64, error: AppError },
/// Connection state change.
StateChange(Http3State),
}
#[derive(Debug, Default, Clone)]
pub(crate) struct Http3ServerConnEvents {
events: Rc<RefCell<VecDeque<Http3ServerConnEvent>>>,
}
impl RecvMessageEvents for Http3ServerConnEvents {
/// Add a new `HeaderReady` event.
fn header_ready(&self, stream_id: u64, headers: Vec<Header>, _interim: bool, fin: bool) {
self.insert(Http3ServerConnEvent::Headers {
stream_id,
headers,
fin,
});
}
/// Add a new `DataReadable` event
fn data_readable(&self, stream_id: u64) {
self.insert(Http3ServerConnEvent::DataReadable { stream_id });
}
fn reset(&self, _stream_id: u64, _error: AppError, _local: bool) {}
}
impl SendMessageEvents for Http3ServerConnEvents {
fn data_writable(&self, _stream_id: u64) {
// Curently not used on the server side.
}
fn remove_send_side_event(&self, _stream_id: u64) {}
fn stop_sending(&self, _stream_id: u64, _app_err: AppError) {}
}
impl Http3ServerConnEvents {
fn insert(&self, event: Http3ServerConnEvent) {
self.events.borrow_mut().push_back(event);
}
fn remove<F>(&self, f: F)
where
F: Fn(&Http3ServerConnEvent) -> bool,
{
self.events.borrow_mut().retain(|evt| !f(evt))
}
pub fn has_events(&self) -> bool {
!self.events.borrow().is_empty()
}
pub fn next_event(&self) -> Option<Http3ServerConnEvent> {
self.events.borrow_mut().pop_front()
}
pub fn connection_state_change(&self, state: Http3State) {
self.insert(Http3ServerConnEvent::StateChange(state));
}
pub fn remove_events_for_stream_id(&self, stream_id: u64) {
self.remove(|evt| {
matches!(evt,
Http3ServerConnEvent::Headers { stream_id: x, .. } | Http3ServerConnEvent::DataReadable { stream_id: x, .. } if *x == stream_id)
});
}
}
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