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9375660b64
The end goal here is for LibHTTP to be the home of our RFC 9111 (HTTP caching) implementation. We currently have one implementation in LibWeb for our in-memory cache and another in RequestServer for our disk cache. The implementations both largely revolve around interacting with HTTP headers. But in LibWeb, we are using Fetch's header infra, and in RS we are using are home-grown header infra from LibHTTP. So to give these a common denominator, this patch replaces the LibHTTP implementation with Fetch's infra. Our existing LibHTTP implementation was not particularly compliant with any spec, so this at least gives us a standards-based common implementation. This migration also required moving a handful of other Fetch AOs over to LibHTTP. (It turns out these AOs were all from the Fetch/Infra/HTTP folder, so perhaps it makes sense for LibHTTP to be the implementation of that entire set of facilities.)
52 lines
1.8 KiB
C++
52 lines
1.8 KiB
C++
/*
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* Copyright (c) 2025, Tim Flynn <trflynn89@ladybird.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/LexicalPath.h>
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#include <AK/StringView.h>
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#include <AK/Time.h>
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#include <AK/Types.h>
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#include <LibHTTP/HeaderList.h>
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#include <LibURL/Forward.h>
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#include <RequestServer/Forward.h>
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namespace RequestServer {
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constexpr inline auto TEST_CACHE_ENABLED_HEADER = "X-Ladybird-Enable-Disk-Cache"sv;
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constexpr inline auto TEST_CACHE_STATUS_HEADER = "X-Ladybird-Disk-Cache-Status"sv;
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constexpr inline auto TEST_CACHE_REQUEST_TIME_OFFSET = "X-Ladybird-Request-Time-Offset"sv;
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String serialize_url_for_cache_storage(URL::URL const&);
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u64 create_cache_key(StringView url, StringView method);
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LexicalPath path_for_cache_key(LexicalPath const& cache_directory, u64 cache_key);
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bool is_cacheable(StringView method);
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bool is_cacheable(u32 status_code, HTTP::HeaderList const&);
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bool is_header_exempted_from_storage(StringView name);
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AK::Duration calculate_freshness_lifetime(u32 status_code, HTTP::HeaderList const&, AK::Duration current_time_offset_for_testing);
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AK::Duration calculate_age(HTTP::HeaderList const&, UnixDateTime request_time, UnixDateTime response_time, AK::Duration current_time_offset_for_testing);
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enum class CacheLifetimeStatus {
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Fresh,
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Expired,
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MustRevalidate,
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};
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CacheLifetimeStatus cache_lifetime_status(HTTP::HeaderList const&, AK::Duration freshness_lifetime, AK::Duration current_age);
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struct RevalidationAttributes {
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static RevalidationAttributes create(HTTP::HeaderList const&);
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Optional<ByteString> etag;
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Optional<UnixDateTime> last_modified;
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};
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void update_header_fields(HTTP::HeaderList&, HTTP::HeaderList const&);
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AK::Duration compute_current_time_offset_for_testing(Optional<DiskCache&>, HTTP::HeaderList const& request_headers);
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}
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