149 lines
4.8 KiB
C++
149 lines
4.8 KiB
C++
/*
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* Copyright (C) 2009, 2012 Ericsson AB. All rights reserved.
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* Copyright (C) 2010 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name of Ericsson nor the names of its contributors
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* may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include "ActiveDOMObject.h"
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#include "EventTarget.h"
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#include "ExceptionOr.h"
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#include "SuspendableTimer.h"
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#include "ThreadableLoaderClient.h"
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#include "Timer.h"
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#include <wtf/URL.h>
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#include <wtf/Vector.h>
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namespace WebCore {
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class MessageEvent;
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class TextResourceDecoder;
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class ThreadableLoader;
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class EventSource final : public RefCounted<EventSource>, public EventTargetWithInlineData, private ThreadableLoaderClient, public ActiveDOMObject {
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WTF_MAKE_ISO_ALLOCATED(EventSource);
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public:
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struct Init {
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bool withCredentials;
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};
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static ExceptionOr<Ref<EventSource>> create(ScriptExecutionContext&, const String& url, const Init&);
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virtual ~EventSource();
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const String& url() const;
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bool withCredentials() const;
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using State = short;
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static const State CONNECTING = 0;
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static const State OPEN = 1;
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static const State CLOSED = 2;
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State readyState() const;
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void close();
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using RefCounted::ref;
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using RefCounted::deref;
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private:
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EventSource(ScriptExecutionContext&, const URL&, const Init&);
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EventTargetInterface eventTargetInterface() const final { return EventSourceEventTargetInterfaceType; }
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ScriptExecutionContext* scriptExecutionContext() const final { return ActiveDOMObject::scriptExecutionContext(); }
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void refEventTarget() final { ref(); }
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void derefEventTarget() final { deref(); }
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void dispatchErrorEvent();
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void doExplicitLoadCancellation();
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// ThreadableLoaderClient
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void didReceiveResponse(unsigned long, const ResourceResponse&) final;
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void didReceiveData(const uint8_t*, int) final;
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void didFinishLoading(unsigned long) final;
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void didFail(const ResourceError&) final;
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// ActiveDOMObject
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void stop() final;
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const char* activeDOMObjectName() const final;
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void suspend(ReasonForSuspension) final;
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void resume() final;
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bool virtualHasPendingActivity() const final;
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void connect();
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void networkRequestEnded();
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void scheduleInitialConnect();
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void scheduleReconnect();
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void abortConnectionAttempt();
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void parseEventStream();
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void parseEventStreamLine(unsigned position, std::optional<unsigned> fieldLength, unsigned lineLength);
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void dispatchMessageEvent();
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bool responseIsValid(const ResourceResponse&) const;
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static const uint64_t defaultReconnectDelay;
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URL m_url;
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bool m_withCredentials;
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State m_state { CONNECTING };
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Ref<TextResourceDecoder> m_decoder;
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RefPtr<ThreadableLoader> m_loader;
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SuspendableTimer m_connectTimer;
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Vector<UChar> m_receiveBuffer;
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bool m_discardTrailingNewline { false };
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bool m_requestInFlight { false };
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bool m_isSuspendedForBackForwardCache { false };
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bool m_isDoingExplicitCancellation { false };
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bool m_shouldReconnectOnResume { false };
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AtomString m_eventName;
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Vector<UChar> m_data;
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String m_currentlyParsedEventId;
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String m_lastEventId;
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uint64_t m_reconnectDelay { defaultReconnectDelay };
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String m_eventStreamOrigin;
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};
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inline const String& EventSource::url() const
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{
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return m_url.string();
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}
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inline bool EventSource::withCredentials() const
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{
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return m_withCredentials;
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}
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inline EventSource::State EventSource::readyState() const
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{
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return m_state;
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}
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} // namespace WebCore
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