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script: Move navigation fetching to the ScriptThread (#34919)

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This allows reusing the asynchrnous fetch mechanism that we use for page
resources and is likely a step toward removing the `FetchThread`.

Benefits:
 - Reduces IPC traffic during navigation. Now instead of bouncing
   between the constellation and the `ScriptThread` responses are sent
   directly to the `ScriptThread`.
 - Allows cancelling loads after redirects, which was not possible
   before.

There is the question of what to do when a redirect is cross-origin
(#23037). This currently isn't handled properly as the `Constellation`
sends data to the same `Pipeline` that initiated the load. This change
doesn't fix this issue, but does make it more possible for the
`ScriptThread` to shut down the pipeline and ask the `Constellation` to
replace it with a new one.

Signed-off-by: Martin Robinson <mrobinson@igalia.com>
This commit is contained in:
Martin Robinson 2025-01-10 13:19:40 +01:00 • committed by GitHub
parent 73c0701c83
commit fbd77b4524
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16 changed files with 420 additions and 460 deletions
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9
components/net/fetch/methods.rs
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@ -28,8 +28,8 @@ use net_traits::request::{
};
use net_traits::response::{Response, ResponseBody, ResponseType};
use net_traits::{
FetchTaskTarget, NetworkError, ReferrerPolicy, ResourceAttribute, ResourceFetchTiming,
ResourceTimeValue, ResourceTimingType,
set_default_accept_language, FetchTaskTarget, NetworkError, ReferrerPolicy, ResourceAttribute,
ResourceFetchTiming, ResourceTimeValue, ResourceTimingType,
};
use rustls_pki_types::CertificateDer;
use serde::{Deserialize, Serialize};
@ -40,10 +40,7 @@ use tokio::sync::mpsc::{UnboundedReceiver as TokioReceiver, UnboundedSender as T
use crate::fetch::cors_cache::CorsCache;
use crate::fetch::headers::determine_nosniff;
use crate::filemanager_thread::FileManager;
use crate::http_loader::{
determine_requests_referrer, http_fetch, set_default_accept, set_default_accept_language,
HttpState,
};
use crate::http_loader::{determine_requests_referrer, http_fetch, set_default_accept, HttpState};
use crate::protocols::ProtocolRegistry;
use crate::subresource_integrity::is_response_integrity_valid;