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/*
* Copyright (C) 2011 Google 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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
* OWNER OR 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.
*/
#ifndef WebSocket_h
#define WebSocket_h
#if ENABLE(WEB_SOCKETS)
#include "ActiveDOMObject.h"
#include "EventListener.h"
#include "EventTarget.h"
#include "URL.h"
#include "WebSocketChannel.h"
#include "WebSocketChannelClient.h"
#include <wtf/Forward.h>
#include <wtf/RefCounted.h>
#include <wtf/text/AtomicStringHash.h>
namespace WebCore {
class Blob;
class CloseEvent;
class ThreadableWebSocketChannel;
class WebSocket final : public RefCounted<WebSocket>, public EventTargetWithInlineData, public ActiveDOMObject, public WebSocketChannelClient {
public:
static void setIsAvailable(bool);
static bool isAvailable();
static const char* subProtocolSeperator();
static Ref<WebSocket> create(ScriptExecutionContext&);
static RefPtr<WebSocket> create(ScriptExecutionContext&, const String& url, ExceptionCode&);
static RefPtr<WebSocket> create(ScriptExecutionContext&, const String& url, const String& protocol, ExceptionCode&);
static RefPtr<WebSocket> create(ScriptExecutionContext&, const String& url, const Vector<String>& protocols, ExceptionCode&);
virtual ~WebSocket();
enum State {
CONNECTING = 0,
OPEN = 1,
CLOSING = 2,
CLOSED = 3
};
void connect(const String& url, ExceptionCode&);
void connect(const String& url, const String& protocol, ExceptionCode&);
void connect(const String& url, const Vector<String>& protocols, ExceptionCode&);
void send(const String& message, ExceptionCode&);
void send(JSC::ArrayBuffer*, ExceptionCode&);
void send(JSC::ArrayBufferView*, ExceptionCode&);
void send(Blob*, ExceptionCode&);
void close(int code, const String& reason, ExceptionCode&);
void close(ExceptionCode& ec) { close(WebSocketChannel::CloseEventCodeNotSpecified, String(), ec); }
void close(int code, ExceptionCode& ec) { close(code, String(), ec); }
const URL& url() const;
State readyState() const;
unsigned long bufferedAmount() const;
String protocol() const;
String extensions() const;
String binaryType() const;
void setBinaryType(const String&, ExceptionCode&);
// EventTarget functions.
virtual EventTargetInterface eventTargetInterface() const override;
virtual ScriptExecutionContext* scriptExecutionContext() const override;
using RefCounted<WebSocket>::ref;
using RefCounted<WebSocket>::deref;
// WebSocketChannelClient functions.
virtual void didConnect() override;
virtual void didReceiveMessage(const String& message) override;
void didReceiveBinaryData(Vector<uint8_t>&&) override;
virtual void didReceiveMessageError() override;
virtual void didUpdateBufferedAmount(unsigned long bufferedAmount) override;
virtual void didStartClosingHandshake() override;
virtual void didClose(unsigned long unhandledBufferedAmount, ClosingHandshakeCompletionStatus, unsigned short code, const String& reason) override;
private:
explicit WebSocket(ScriptExecutionContext&);
void resumeTimerFired();
void dispatchOrQueueErrorEvent();
void dispatchOrQueueEvent(Ref<Event>&&);
// ActiveDOMObject API.
void contextDestroyed() override;
bool canSuspendForDocumentSuspension() const override;
void suspend(ReasonForSuspension) override;
void resume() override;
void stop() override;
const char* activeDOMObjectName() const override;
virtual void refEventTarget() override { ref(); }
virtual void derefEventTarget() override { deref(); }
size_t getFramingOverhead(size_t payloadSize);
enum BinaryType {
BinaryTypeBlob,
BinaryTypeArrayBuffer
};
RefPtr<ThreadableWebSocketChannel> m_channel;
State m_state;
URL m_url;
unsigned long m_bufferedAmount;
unsigned long m_bufferedAmountAfterClose;
BinaryType m_binaryType;
String m_subprotocol;
String m_extensions;
Timer m_resumeTimer;
bool m_shouldDelayEventFiring { false };
Deque<Ref<Event>> m_pendingEvents;
bool m_dispatchedErrorEvent { false };
};
} // namespace WebCore
#endif // ENABLE(WEB_SOCKETS)
#endif // WebSocket_h
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