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/*
* Copyright (C) 2021 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <WebCore/LoadSchedulingMode.h>
#include <WebCore/NetworkLoadMetrics.h>
#include <WebCore/PageIdentifier.h>
#include <tuple>
#include <wtf/HashMap.h>
#include <wtf/HashSet.h>
#include <wtf/RefCountedAndCanMakeWeakPtr.h>
#include <wtf/TZoneMalloc.h>
#include <wtf/WeakListHashSet.h>
#include <wtf/WeakPtr.h>
namespace WebCore {
class ResourceError;
}
namespace WebKit {
class NetworkLoad;
class NetworkLoadScheduler : public RefCountedAndCanMakeWeakPtr<NetworkLoadScheduler> {
WTF_MAKE_TZONE_ALLOCATED(NetworkLoadScheduler);
public:
static Ref<NetworkLoadScheduler> create()
{
return adoptRef(*new NetworkLoadScheduler);
}
~NetworkLoadScheduler();
void schedule(NetworkLoad&);
void unschedule(NetworkLoad&, const WebCore::NetworkLoadMetrics* = nullptr);
void startedPreconnectForMainResource(const URL&, const String& userAgent);
void finishedPreconnectForMainResource(const URL&, const String& userAgent, const WebCore::ResourceError&);
void setResourceLoadSchedulingMode(WebCore::PageIdentifier, WebCore::LoadSchedulingMode);
void prioritizeLoads(const Vector<NetworkLoad*>&);
void clearPageData(WebCore::PageIdentifier);
private:
NetworkLoadScheduler();
void scheduleLoad(NetworkLoad&);
void unscheduleLoad(NetworkLoad&);
void scheduleMainResourceLoad(NetworkLoad&);
void unscheduleMainResourceLoad(NetworkLoad&, const WebCore::NetworkLoadMetrics*);
bool isOriginHTTP1X(const String&);
void updateOriginProtocolInfo(const String&, const String&);
class HostContext;
HostContext* contextForLoad(const NetworkLoad&);
using PageContext = HashMap<String, std::unique_ptr<HostContext>>;
HashMap<WebCore::PageIdentifier, std::unique_ptr<PageContext>> m_pageContexts;
struct PendingMainResourcePreconnectInfo {
unsigned pendingPreconnects {1};
WeakListHashSet<NetworkLoad> pendingLoads;
};
// Maps (protocolHostAndPort, userAgent) => PendingMainResourcePreconnectInfo.
using PendingPreconnectMap = HashMap<std::tuple<String, String>, PendingMainResourcePreconnectInfo>;
PendingPreconnectMap m_pendingMainResourcePreconnects;
void maybePrunePreconnectInfo(PendingPreconnectMap::iterator&);
HashSet<String> m_http1XOrigins;
};
}
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