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ladybird/Userland/Libraries/LibWeb/Fetch/Fetching/PendingResponse.h

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LibWeb: Implement most of the 'Fetching' AOs This implements the following operations from section 4 of the Fetch spec (https://fetch.spec.whatwg.org/#fetching): - Fetch - Main fetch - Fetch response handover - Scheme fetch - HTTP fetch - HTTP-redirect fetch - HTTP-network-or-cache fetch (without caching) It does *not* implement: - HTTP-network fetch - CORS-preflight fetch Instead, we let ResourceLoader handle the actual networking for now, which isn't ideal, but certainly enough to get enough functionality up and running for most websites to not complain.
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/*
* Copyright (c) 2022, Linus Groh <linusg@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <LibJS/Forward.h>
#include <LibJS/Heap/Cell.h>
LibWeb: Add missing GCPtr.h includes to Fetch headers These are missing in most Fetch headers, and clangd is (rightfully) very loud about it on a few of these.
2023-02-10 08:29:14 -05:00
#include <LibJS/Heap/GCPtr.h>
LibWeb: Implement most of the 'Fetching' AOs This implements the following operations from section 4 of the Fetch spec (https://fetch.spec.whatwg.org/#fetching): - Fetch - Main fetch - Fetch response handover - Scheme fetch - HTTP fetch - HTTP-redirect fetch - HTTP-network-or-cache fetch (without caching) It does *not* implement: - HTTP-network fetch - CORS-preflight fetch Instead, we let ResourceLoader handle the actual networking for now, which isn't ideal, but certainly enough to get enough functionality up and running for most websites to not complain.
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#include <LibJS/SafeFunction.h>
#include <LibWeb/Fetch/Infrastructure/HTTP/Responses.h>
namespace Web::Fetch::Fetching {
// Non-standard wrapper around a possibly pending Infrastructure::Response.
// This is needed to fit the asynchronous nature of ResourceLoader into the synchronous expectations
// of the Fetch spec - we run 'in parallel' as a deferred_invoke(), which is still on the main thread;
// therefore we use callbacks to run portions of the spec that require waiting for an HTTP load.
class PendingResponse : public JS::Cell {
JS_CELL(PendingResponse, JS::Cell);
LibWeb: Put most LibWeb GC objects in type-specific heap blocks With this change, we now have ~1200 CellAllocators across both LibJS and LibWeb in a normal WebContent instance. This gives us a minimum heap size of 4.7 MiB in the scenario where we only have one cell allocated per type. Of course, in practice there will be many more of each type, so the effective overhead is quite a bit smaller than that in practice. I left a few types unconverted to this mechanism because I got tired of doing this. :^)
2023-11-19 19:47:52 +01:00
JS_DECLARE_ALLOCATOR(PendingResponse);
LibWeb: Implement most of the 'Fetching' AOs This implements the following operations from section 4 of the Fetch spec (https://fetch.spec.whatwg.org/#fetching): - Fetch - Main fetch - Fetch response handover - Scheme fetch - HTTP fetch - HTTP-redirect fetch - HTTP-network-or-cache fetch (without caching) It does *not* implement: - HTTP-network fetch - CORS-preflight fetch Instead, we let ResourceLoader handle the actual networking for now, which isn't ideal, but certainly enough to get enough functionality up and running for most websites to not complain.
2022-10-23 22:16:14 +01:00
public:
LibWeb: Use JS::HeapFunction in Fetch::Fetching::PendingResponse This fixes a long-standing realm leak.
2024-04-03 11:49:50 +02:00
using Callback = Function<void(JS::NonnullGCPtr<Infrastructure::Response>)>;
LibWeb: Implement most of the 'Fetching' AOs This implements the following operations from section 4 of the Fetch spec (https://fetch.spec.whatwg.org/#fetching): - Fetch - Main fetch - Fetch response handover - Scheme fetch - HTTP fetch - HTTP-redirect fetch - HTTP-network-or-cache fetch (without caching) It does *not* implement: - HTTP-network fetch - CORS-preflight fetch Instead, we let ResourceLoader handle the actual networking for now, which isn't ideal, but certainly enough to get enough functionality up and running for most websites to not complain.
2022-10-23 22:16:14 +01:00
LibWeb: Register PendingResponse with a Request to keep it alive This was an oversight from when I converted PendingResponse and various other classes from being ref-counted to GC-allocated last minute - no one takes care to keep all of them alive. Some are on the stack, and some might be captured in another PendingResponse's JS::SafeFunction, but ultimately, we need a better solution. Since a PendingResponse is *always* the result of someone having created a Request, let's just let that keep a list of each PendingResponse that has been created for it, and visit them until they are resolved. After that, they can be GC'd with no complaints.
2022-11-01 19:35:38 +00:00
[[nodiscard]] static JS::NonnullGCPtr<PendingResponse> create(JS::VM&, JS::NonnullGCPtr<Infrastructure::Request>);
[[nodiscard]] static JS::NonnullGCPtr<PendingResponse> create(JS::VM&, JS::NonnullGCPtr<Infrastructure::Request>, JS::NonnullGCPtr<Infrastructure::Response>);
LibWeb: Implement most of the 'Fetching' AOs This implements the following operations from section 4 of the Fetch spec (https://fetch.spec.whatwg.org/#fetching): - Fetch - Main fetch - Fetch response handover - Scheme fetch - HTTP fetch - HTTP-redirect fetch - HTTP-network-or-cache fetch (without caching) It does *not* implement: - HTTP-network fetch - CORS-preflight fetch Instead, we let ResourceLoader handle the actual networking for now, which isn't ideal, but certainly enough to get enough functionality up and running for most websites to not complain.
2022-10-23 22:16:14 +01:00
void when_loaded(Callback);
void resolve(JS::NonnullGCPtr<Infrastructure::Response>);
LibWeb: Support unbuffered fetch requests Supporting unbuffered fetches is actually part of the fetch spec in its HTTP-network-fetch algorithm. We had previously implemented this method in a very ad-hoc manner as a simple wrapper around ResourceLoader. This is still the case, but we now implement a good amount of these steps according to spec, using ResourceLoader's unbuffered API. The response data is forwarded through to the fetch response using streams. This will eventually let us remove the use of ResourceLoader's buffered API, as all responses should just be streamed this way. The streams spec then supplies ways to wait for completion, thus allowing fully buffered responses. However, we have more work to do to make the other parts of our fetch implementation (namely, Body::fully_read) use streams before we can do this.
2024-05-26 08:03:29 -04:00
bool is_resolved() const { return m_response != nullptr; }
LibWeb: Implement most of the 'Fetching' AOs This implements the following operations from section 4 of the Fetch spec (https://fetch.spec.whatwg.org/#fetching): - Fetch - Main fetch - Fetch response handover - Scheme fetch - HTTP fetch - HTTP-redirect fetch - HTTP-network-or-cache fetch (without caching) It does *not* implement: - HTTP-network fetch - CORS-preflight fetch Instead, we let ResourceLoader handle the actual networking for now, which isn't ideal, but certainly enough to get enough functionality up and running for most websites to not complain.
2022-10-23 22:16:14 +01:00
private:
LibWeb: Register PendingResponse with a Request to keep it alive This was an oversight from when I converted PendingResponse and various other classes from being ref-counted to GC-allocated last minute - no one takes care to keep all of them alive. Some are on the stack, and some might be captured in another PendingResponse's JS::SafeFunction, but ultimately, we need a better solution. Since a PendingResponse is *always* the result of someone having created a Request, let's just let that keep a list of each PendingResponse that has been created for it, and visit them until they are resolved. After that, they can be GC'd with no complaints.
2022-11-01 19:35:38 +00:00
PendingResponse(JS::NonnullGCPtr<Infrastructure::Request>, JS::GCPtr<Infrastructure::Response> = {});
LibWeb: Implement most of the 'Fetching' AOs This implements the following operations from section 4 of the Fetch spec (https://fetch.spec.whatwg.org/#fetching): - Fetch - Main fetch - Fetch response handover - Scheme fetch - HTTP fetch - HTTP-redirect fetch - HTTP-network-or-cache fetch (without caching) It does *not* implement: - HTTP-network fetch - CORS-preflight fetch Instead, we let ResourceLoader handle the actual networking for now, which isn't ideal, but certainly enough to get enough functionality up and running for most websites to not complain.
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virtual void visit_edges(JS::Cell::Visitor&) override;
LibJS: Handle both const and non-const Ts in Handle<T>::create() Again, the const-ness only really involves Heap-internal metadata, so the callers shouldn't care about mutations here.
2023-02-25 10:44:31 -07:00
void run_callback();
LibWeb: Implement most of the 'Fetching' AOs This implements the following operations from section 4 of the Fetch spec (https://fetch.spec.whatwg.org/#fetching): - Fetch - Main fetch - Fetch response handover - Scheme fetch - HTTP fetch - HTTP-redirect fetch - HTTP-network-or-cache fetch (without caching) It does *not* implement: - HTTP-network fetch - CORS-preflight fetch Instead, we let ResourceLoader handle the actual networking for now, which isn't ideal, but certainly enough to get enough functionality up and running for most websites to not complain.
2022-10-23 22:16:14 +01:00
LibWeb: Use JS::HeapFunction in Fetch::Fetching::PendingResponse This fixes a long-standing realm leak.
2024-04-03 11:49:50 +02:00
JS::GCPtr<JS::HeapFunction<void(JS::NonnullGCPtr<Infrastructure::Response>)>> m_callback;
LibWeb: Register PendingResponse with a Request to keep it alive This was an oversight from when I converted PendingResponse and various other classes from being ref-counted to GC-allocated last minute - no one takes care to keep all of them alive. Some are on the stack, and some might be captured in another PendingResponse's JS::SafeFunction, but ultimately, we need a better solution. Since a PendingResponse is *always* the result of someone having created a Request, let's just let that keep a list of each PendingResponse that has been created for it, and visit them until they are resolved. After that, they can be GC'd with no complaints.
2022-11-01 19:35:38 +00:00
JS::NonnullGCPtr<Infrastructure::Request> m_request;
LibWeb: Implement most of the 'Fetching' AOs This implements the following operations from section 4 of the Fetch spec (https://fetch.spec.whatwg.org/#fetching): - Fetch - Main fetch - Fetch response handover - Scheme fetch - HTTP fetch - HTTP-redirect fetch - HTTP-network-or-cache fetch (without caching) It does *not* implement: - HTTP-network fetch - CORS-preflight fetch Instead, we let ResourceLoader handle the actual networking for now, which isn't ideal, but certainly enough to get enough functionality up and running for most websites to not complain.
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JS::GCPtr<Infrastructure::Response> m_response;
};
}
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