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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.
*/
#pragma once
#include "ContextDestructionObserver.h"
#include "EventTarget.h"
#include "ExceptionOr.h"
#include <wtf/URL.h>
#include <wtf/HashSet.h>
#include <wtf/Lock.h>
#include "FetchHeaders.h"
namespace uWS {
template<bool, bool, typename>
struct WebSocket;
}
namespace JSC {
class ArrayBuffer;
class ArrayBufferView;
}
namespace WebCore {
// class Blob;
class WebSocket final : public RefCounted<WebSocket>, public EventTargetWithInlineData, public ContextDestructionObserver {
WTF_MAKE_ISO_ALLOCATED(WebSocket);
public:
static ASCIILiteral subprotocolSeparator();
static ExceptionOr<Ref<WebSocket>> create(ScriptExecutionContext&, const String& url);
static ExceptionOr<Ref<WebSocket>> create(ScriptExecutionContext&, const String& url, const String& protocol);
static ExceptionOr<Ref<WebSocket>> create(ScriptExecutionContext&, const String& url, const Vector<String>& protocols);
static ExceptionOr<Ref<WebSocket>> create(ScriptExecutionContext&, const String& url, const Vector<String>& protocols, std::optional<FetchHeaders::Init>&&);
~WebSocket();
enum State {
CONNECTING = 0,
OPEN = 1,
CLOSING = 2,
CLOSED = 3,
};
enum Opcode : unsigned char {
Continue = 0x0,
Text = 0x1,
Binary = 0x2,
Close = 0x8,
Ping = 0x9,
Pong = 0xA,
};
enum CleanStatus {
NotClean = 0,
Clean = 1,
};
ExceptionOr<void> connect(const String& url);
ExceptionOr<void> connect(const String& url, const String& protocol);
ExceptionOr<void> connect(const String& url, const Vector<String>& protocols);
ExceptionOr<void> connect(const String& url, const Vector<String>& protocols, std::optional<FetchHeaders::Init>&&);
ExceptionOr<void> send(const String& message);
ExceptionOr<void> send(JSC::ArrayBuffer&);
ExceptionOr<void> send(JSC::ArrayBufferView&);
// ExceptionOr<void> send(Blob&);
ExceptionOr<void> ping();
ExceptionOr<void> ping(const String& message);
ExceptionOr<void> ping(JSC::ArrayBuffer&);
ExceptionOr<void> ping(JSC::ArrayBufferView&);
// ExceptionOr<void> ping(Blob&);
ExceptionOr<void> pong();
ExceptionOr<void> pong(const String& message);
ExceptionOr<void> pong(JSC::ArrayBuffer&);
ExceptionOr<void> pong(JSC::ArrayBufferView&);
// ExceptionOr<void> ping(Blob&);
ExceptionOr<void> close(std::optional<unsigned short> code, const String& reason);
ExceptionOr<void> terminate();
const URL& url() const;
State readyState() const;
unsigned bufferedAmount() const;
String protocol() const;
String extensions() const;
String binaryType() const;
ExceptionOr<void> setBinaryType(const String&);
ScriptExecutionContext* scriptExecutionContext() const final;
using RefCounted::deref;
using RefCounted::ref;
void didConnect();
void didClose(unsigned unhandledBufferedAmount, unsigned short code, const String& reason);
void didConnect(us_socket_t* socket, char* bufferedData, size_t bufferedDataSize);
void didFailWithErrorCode(int32_t code);
void didReceiveMessage(String&& message);
void didReceiveData(const char* data, size_t length);
void didReceiveBinaryData(const AtomString& eventName, Vector<uint8_t>&& binaryData);
void updateHasPendingActivity();
bool hasPendingActivity() const
{
return m_hasPendingActivity.load();
}
void incPendingActivityCount()
{
m_pendingActivityCount++;
ref();
updateHasPendingActivity();
}
void decPendingActivityCount()
{
m_pendingActivityCount--;
deref();
updateHasPendingActivity();
}
private:
typedef union AnyWebSocket {
WebSocketClient* client;
WebSocketClientTLS* clientSSL;
} AnyWebSocket;
enum ConnectedWebSocketKind {
None,
Client,
ClientSSL,
};
std::atomic<bool> m_hasPendingActivity { true };
explicit WebSocket(ScriptExecutionContext&);
explicit WebSocket(ScriptExecutionContext&, const String& url);
void dispatchErrorEventIfNeeded();
// void contextDestroyed() final;
// void suspend(ReasonForSuspension) final;
// void resume() final;
// void stop() final;
// const char* activeDOMObjectName() const final;
EventTargetInterface eventTargetInterface() const final;
void refEventTarget() final { ref(); }
void derefEventTarget() final { deref(); }
void didReceiveClose(CleanStatus wasClean, unsigned short code, WTF::String reason);
void didUpdateBufferedAmount(unsigned bufferedAmount);
void didStartClosingHandshake();
void sendWebSocketString(const String& message, const Opcode opcode);
void sendWebSocketData(const char* data, size_t length, const Opcode opcode);
void failAsynchronously();
enum class BinaryType { Blob,
ArrayBuffer,
// non-standard:
NodeBuffer };
State m_state { CONNECTING };
URL m_url;
unsigned m_bufferedAmount { 0 };
unsigned m_bufferedAmountAfterClose { 0 };
// In browsers, the default is Blob, however most applications
// immediately change the default to ArrayBuffer.
//
// And since we know the typical usage is to override the default,
// we set NodeBuffer as the default to match the default of ServerWebSocket.
BinaryType m_binaryType { BinaryType::NodeBuffer };
String m_subprotocol;
String m_extensions;
void* m_upgradeClient { nullptr };
bool m_isSecure { false };
AnyWebSocket m_connectedWebSocket { nullptr };
ConnectedWebSocketKind m_connectedWebSocketKind { ConnectedWebSocketKind::None };
size_t m_pendingActivityCount { 0 };
bool m_dispatchedErrorEvent { false };
// RefPtr<PendingActivity<WebSocket>> m_pendingActivity;
};
} // namespace WebCore
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