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/*
* Copyright (C) 2012 Google Inc. All rights reserved.
* Copyright (C) 2017-2021 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
#if ENABLE(WEB_RTC)
#include "ActiveDOMObject.h"
#include "DetachedRTCDataChannel.h"
#include "Event.h"
#include "EventTarget.h"
#include "ExceptionOr.h"
#include "NetworkSendQueue.h"
#include "RTCDataChannelHandler.h"
#include "RTCDataChannelHandlerClient.h"
#include "RTCDataChannelIdentifier.h"
#include "ScriptExecutionContext.h"
#include "ScriptWrappable.h"
#include "Timer.h"
namespace JSC {
class ArrayBuffer;
class ArrayBufferView;
}
namespace WebCore {
class Blob;
class RTCPeerConnectionHandler;
class RTCDataChannel final : public RefCounted<RTCDataChannel>, public ActiveDOMObject, public RTCDataChannelHandlerClient, public EventTarget {
WTF_MAKE_ISO_ALLOCATED(RTCDataChannel);
public:
static Ref<RTCDataChannel> create(ScriptExecutionContext&, std::unique_ptr<RTCDataChannelHandler>&&, String&&, RTCDataChannelInit&&, RTCDataChannelState);
static Ref<RTCDataChannel> create(ScriptExecutionContext&, RTCDataChannelIdentifier, String&&, RTCDataChannelInit&&, RTCDataChannelState);
bool ordered() const { return *m_options.ordered; }
std::optional<unsigned short> maxPacketLifeTime() const { return m_options.maxPacketLifeTime; }
std::optional<unsigned short> maxRetransmits() const { return m_options.maxRetransmits; }
String protocol() const { return m_options.protocol; }
bool negotiated() const { return *m_options.negotiated; };
std::optional<unsigned short> id() const;
RTCPriorityType priority() const { return m_options.priority; };
const RTCDataChannelInit& options() const { return m_options; }
const String& label() const { return m_label; }
RTCDataChannelState readyState() const {return m_readyState; }
size_t bufferedAmount() const final { return m_bufferedAmount; }
size_t bufferedAmountLowThreshold() const { return m_bufferedAmountLowThreshold; }
void setBufferedAmountLowThreshold(size_t value) { m_bufferedAmountLowThreshold = value; }
const AtomString& binaryType() const;
ExceptionOr<void> setBinaryType(const AtomString&);
ExceptionOr<void> send(const String&);
ExceptionOr<void> send(JSC::ArrayBuffer&);
ExceptionOr<void> send(JSC::ArrayBufferView&);
ExceptionOr<void> send(Blob&);
void close();
RTCDataChannelIdentifier identifier() const { return m_identifier; }
bool canDetach() const;
std::unique_ptr<DetachedRTCDataChannel> detach();
using RefCounted<RTCDataChannel>::ref;
using RefCounted<RTCDataChannel>::deref;
WEBCORE_EXPORT static std::unique_ptr<RTCDataChannelHandler> handlerFromIdentifier(RTCDataChannelLocalIdentifier);
void fireOpenEventIfNeeded();
private:
RTCDataChannel(ScriptExecutionContext&, std::unique_ptr<RTCDataChannelHandler>&&, String&&, RTCDataChannelInit&&, RTCDataChannelState);
static NetworkSendQueue createMessageQueue(ScriptExecutionContext&, RTCDataChannel&);
void scheduleDispatchEvent(Ref<Event>&&);
void removeFromDataChannelLocalMapIfNeeded();
EventTargetInterface eventTargetInterface() const final { return RTCDataChannelEventTargetInterfaceType; }
ScriptExecutionContext* scriptExecutionContext() const final { return ActiveDOMObject::scriptExecutionContext(); }
void refEventTarget() final { ref(); }
void derefEventTarget() final { deref(); }
// ActiveDOMObject API
void stop() final;
const char* activeDOMObjectName() const final { return "RTCDataChannel"; }
bool virtualHasPendingActivity() const final;
// RTCDataChannelHandlerClient API
void didChangeReadyState(RTCDataChannelState) final;
void didReceiveStringData(const String&) final;
void didReceiveRawData(const uint8_t*, size_t) final;
void didDetectError(Ref<RTCError>&&) final;
void bufferedAmountIsDecreasing(size_t) final;
std::unique_ptr<RTCDataChannelHandler> m_handler;
RTCDataChannelIdentifier m_identifier;
ScriptExecutionContextIdentifier m_contextIdentifier;
// FIXME: m_stopped is probably redundant with m_readyState.
bool m_stopped { false };
RTCDataChannelState m_readyState { RTCDataChannelState::Connecting };
enum class BinaryType { Blob, ArrayBuffer };
BinaryType m_binaryType { BinaryType::ArrayBuffer };
String m_label;
RTCDataChannelInit m_options;
size_t m_bufferedAmount { 0 };
size_t m_bufferedAmountLowThreshold { 0 };
bool m_isDetachable { true };
bool m_isDetached { false };
NetworkSendQueue m_messageQueue;
};
} // namespace WebCore
#endif // ENABLE(WEB_RTC)
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