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a4e3890c05
When a request becomes stale, we will now issue a revalidation request (if the response indicates it may be revalidated). We do this by issuing a normal fetch request, with If-None-Match and/or If-Modified-Since request headers. If the server replies with an HTTP 304 status, we update the stored response headers to match the 304's headers, and serve the response to the client from the cache. If the server replies with any other code, we remove the cache entry. We will open a new cache entry to cache the new response, if possible.
43 lines
1.2 KiB
C++
43 lines
1.2 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/StringView.h>
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#include <AK/Time.h>
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#include <AK/Types.h>
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#include <LibHTTP/HeaderMap.h>
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#include <LibURL/Forward.h>
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namespace RequestServer {
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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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bool is_cacheable(StringView method);
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bool is_cacheable(u32 status_code, HTTP::HeaderMap const&);
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bool is_header_exempted_from_storage(StringView name);
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AK::Duration calculate_freshness_lifetime(HTTP::HeaderMap const&);
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AK::Duration calculate_age(HTTP::HeaderMap const&, UnixDateTime request_time, UnixDateTime response_time);
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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::HeaderMap const&, AK::Duration freshness_lifetime, AK::Duration current_age);
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struct RevalidationAttributes {
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static RevalidationAttributes create(HTTP::HeaderMap 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::HeaderMap&, HTTP::HeaderMap const&);
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}
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