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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 WorkerWebSocketChannel_h
#define WorkerWebSocketChannel_h
#include "bindings/core/v8/SourceLocation.h"
#include "core/workers/WorkerThreadLifecycleObserver.h"
#include "modules/websockets/WebSocketChannel.h"
#include "modules/websockets/WebSocketChannelClient.h"
#include "platform/heap/Handle.h"
#include "public/platform/WebTraceLocation.h"
#include "wtf/Assertions.h"
#include "wtf/Forward.h"
#include "wtf/RefPtr.h"
#include "wtf/Vector.h"
#include "wtf/text/WTFString.h"
#include <memory>
#include <stdint.h>
namespace blink {
class BlobDataHandle;
class KURL;
class ExecutionContext;
class WebSocketChannelSyncHelper;
class WorkerGlobalScope;
class WorkerLoaderProxy;
class WorkerWebSocketChannel final : public WebSocketChannel {
WTF_MAKE_NONCOPYABLE(WorkerWebSocketChannel);
public:
static WebSocketChannel* create(WorkerGlobalScope& workerGlobalScope,
WebSocketChannelClient* client,
std::unique_ptr<SourceLocation> location) {
return new WorkerWebSocketChannel(workerGlobalScope, client,
std::move(location));
}
~WorkerWebSocketChannel() override;
// WebSocketChannel functions.
bool connect(const KURL&, const String& protocol) override;
void send(const CString&) override;
void send(const DOMArrayBuffer&,
unsigned byteOffset,
unsigned byteLength) override;
void send(PassRefPtr<BlobDataHandle>) override;
void sendTextAsCharVector(std::unique_ptr<Vector<char>>) override {
NOTREACHED();
}
void sendBinaryAsCharVector(std::unique_ptr<Vector<char>>) override {
NOTREACHED();
}
void close(int code, const String& reason) override;
void fail(const String& reason,
MessageLevel,
std::unique_ptr<SourceLocation>) override;
void disconnect() override; // Will suppress didClose().
DECLARE_VIRTUAL_TRACE();
class Bridge;
// Allocated and used in the main thread.
class Peer final : public GarbageCollectedFinalized<Peer>,
public WebSocketChannelClient,
public WorkerThreadLifecycleObserver {
USING_GARBAGE_COLLECTED_MIXIN(Peer);
WTF_MAKE_NONCOPYABLE(Peer);
public:
Peer(Bridge*, PassRefPtr<WorkerLoaderProxy>, WorkerThreadLifecycleContext*);
~Peer() override;
// SourceLocation parameter may be shown when the connection fails.
bool initialize(std::unique_ptr<SourceLocation>, ExecutionContext*);
bool connect(const KURL&, const String& protocol);
void sendTextAsCharVector(std::unique_ptr<Vector<char>>);
void sendBinaryAsCharVector(std::unique_ptr<Vector<char>>);
void sendBlob(PassRefPtr<BlobDataHandle>);
void close(int code, const String& reason);
void fail(const String& reason,
MessageLevel,
std::unique_ptr<SourceLocation>);
void disconnect();
DECLARE_VIRTUAL_TRACE();
// Promptly clear connection to bridge + loader proxy.
EAGERLY_FINALIZE();
// WebSocketChannelClient functions.
void didConnect(const String& subprotocol,
const String& extensions) override;
void didReceiveTextMessage(const String& payload) override;
void didReceiveBinaryMessage(std::unique_ptr<Vector<char>>) override;
void didConsumeBufferedAmount(uint64_t) override;
void didStartClosingHandshake() override;
void didClose(ClosingHandshakeCompletionStatus,
unsigned short code,
const String& reason) override;
void didError() override;
// WorkerThreadLifecycleObserver function.
void contextDestroyed(WorkerThreadLifecycleContext*) override;
private:
CrossThreadWeakPersistent<Bridge> m_bridge;
RefPtr<WorkerLoaderProxy> m_loaderProxy;
Member<WebSocketChannel> m_mainWebSocketChannel;
};
// Bridge for Peer. Running on the worker thread.
class Bridge final : public GarbageCollectedFinalized<Bridge> {
WTF_MAKE_NONCOPYABLE(Bridge);
public:
Bridge(WebSocketChannelClient*, WorkerGlobalScope&);
~Bridge();
// SourceLocation parameter may be shown when the connection fails.
bool connect(std::unique_ptr<SourceLocation>,
const KURL&,
const String& protocol);
void send(const CString& message);
void send(const DOMArrayBuffer&, unsigned byteOffset, unsigned byteLength);
void send(PassRefPtr<BlobDataHandle>);
void close(int code, const String& reason);
void fail(const String& reason,
MessageLevel,
std::unique_ptr<SourceLocation>);
void disconnect();
void connectOnMainThread(std::unique_ptr<SourceLocation>,
WorkerThreadLifecycleContext*,
const KURL&,
const String& protocol,
WebSocketChannelSyncHelper*,
ExecutionContext*);
// Returns null when |disconnect| has already been called.
WebSocketChannelClient* client() { return m_client; }
DECLARE_TRACE();
// Promptly clear connection to peer + loader proxy.
EAGERLY_FINALIZE();
private:
Member<WebSocketChannelClient> m_client;
Member<WorkerGlobalScope> m_workerGlobalScope;
RefPtr<WorkerLoaderProxy> m_loaderProxy;
CrossThreadPersistent<Peer> m_peer;
};
private:
WorkerWebSocketChannel(WorkerGlobalScope&,
WebSocketChannelClient*,
std::unique_ptr<SourceLocation>);
Member<Bridge> m_bridge;
std::unique_ptr<SourceLocation> m_locationAtConnection;
};
} // namespace blink
#endif // WorkerWebSocketChannel_h
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