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Initial support for <link rel="prefetch"> (#33345)

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* Properly store link relations

Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>

* Send fetch request for prefetch links

We don't actually *do* anything with the response yet
(handle errors etc) but its a first step.

Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>

* Fire load/error events for prefetch loads

Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>

* Set prefetch destination/cors setting correctly

Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>

* Update WPT expectations

Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>

* Fix ./mach test-tidy errors

Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>

* Set correct "Accept" value for prefetch requests

Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>

* Add spec text to individual steps

Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>

---------

Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>
This commit is contained in:
Simon Wülker 2024-09-09 20:52:56 +02:00 • committed by GitHub
parent 2993577ac0
commit 10e5bb72d9
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GPG key ID: B5690EEEBB952194
11 changed files with 531 additions and 182 deletions
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59
components/net/http_loader.rs
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@ -35,13 +35,12 @@ use ipc_channel::ipc::{self, IpcSender};
use ipc_channel::router::ROUTER;
use log::{debug, error, info, log_enabled, warn};
use net_traits::pub_domains::reg_suffix;
use net_traits::quality::{quality_to_value, Quality, QualityItem};
use net_traits::request::Origin::Origin as SpecificOrigin;
use net_traits::request::{
get_cors_unsafe_header_names, is_cors_non_wildcard_request_header_name,
is_cors_safelisted_method, is_cors_safelisted_request_header, BodyChunkRequest,
BodyChunkResponse, CacheMode, CredentialsMode, Destination, Origin, RedirectMode, Referrer,
Request, RequestBuilder, RequestMode, ResponseTainting, ServiceWorkersMode,
BodyChunkResponse, CacheMode, CredentialsMode, Destination, Initiator, Origin, RedirectMode,
Referrer, Request, RequestBuilder, RequestMode, ResponseTainting, ServiceWorkersMode,
};
use net_traits::response::{HttpsState, Response, ResponseBody, ResponseType};
use net_traits::{
@ -70,6 +69,10 @@ use crate::hsts::HstsList;
use crate::http_cache::{CacheKey, HttpCache};
use crate::resource_thread::AuthCache;
/// <https://fetch.spec.whatwg.org/#document-accept-header-value>
pub const DOCUMENT_ACCEPT_HEADER_VALUE: HeaderValue =
HeaderValue::from_static("text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8");
/// The various states an entry of the HttpCache can be in.
#[derive(Clone, Debug, Eq, PartialEq)]
pub enum HttpCacheEntryState {
@ -117,41 +120,29 @@ impl Default for HttpState {
}
}
// Step 3 of https://fetch.spec.whatwg.org/#concept-fetch.
pub fn set_default_accept(destination: Destination, headers: &mut HeaderMap) {
if headers.contains_key(header::ACCEPT) {
/// Step 13 of <https://fetch.spec.whatwg.org/#concept-fetch>.
pub fn set_default_accept(request: &mut Request) {
if request.headers.contains_key(header::ACCEPT) {
return;
}
let value = match destination {
// Step 3.2.
Destination::Document => vec![
QualityItem::new(mime::TEXT_HTML, Quality::from_u16(1000)),
QualityItem::new(
"application/xhtml+xml".parse().unwrap(),
Quality::from_u16(1000),
),
QualityItem::new("application/xml".parse().unwrap(), Quality::from_u16(900)),
QualityItem::new(mime::STAR_STAR, Quality::from_u16(800)),
],
// Step 3.3.
Destination::Image => vec![
QualityItem::new(mime::IMAGE_PNG, Quality::from_u16(1000)),
QualityItem::new(mime::IMAGE_SVG, Quality::from_u16(1000)),
QualityItem::new(mime::IMAGE_STAR, Quality::from_u16(800)),
QualityItem::new(mime::STAR_STAR, Quality::from_u16(500)),
],
// Step 3.3.
Destination::Style => vec![
QualityItem::new(mime::TEXT_CSS, Quality::from_u16(1000)),
QualityItem::new(mime::STAR_STAR, Quality::from_u16(100)),
],
// Step 3.1.
_ => vec![QualityItem::new(mime::STAR_STAR, Quality::from_u16(1000))],
let value = if request.initiator == Initiator::Prefetch {
DOCUMENT_ACCEPT_HEADER_VALUE
} else {
match request.destination {
Destination::Document | Destination::Frame | Destination::IFrame => {
DOCUMENT_ACCEPT_HEADER_VALUE
},
Destination::Image => {
HeaderValue::from_static("image/png,image/svg+xml,image/*;q=0.8,*/*;q=0.5")
},
Destination::Json => HeaderValue::from_static("application/json,*/*;q=0.5"),
Destination::Style => HeaderValue::from_static("text/css,*/*;q=0.1"),
_ => HeaderValue::from_static("*/*"),
}
};
// Step 3.4.
// TODO(eijebong): Change this once typed headers are done
headers.insert(header::ACCEPT, quality_to_value(value));
request.headers.insert(header::ACCEPT, value);
}
fn set_default_accept_encoding(headers: &mut HeaderMap) {