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+/*
+ * Copyright (C) 2009 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 WebSocketChannel_h
+#define WebSocketChannel_h
+
+#if ENABLE(WEB_SOCKETS)
+
+#include "SocketStreamHandleClient.h"
+#include "ThreadableWebSocketChannel.h"
+#include "Timer.h"
+#include "WebSocketHandshake.h"
+#include <wtf/Forward.h>
+#include <wtf/RefCounted.h>
+#include <wtf/Vector.h>
+
+namespace WebCore {
+
+ class ScriptExecutionContext;
+ class SocketStreamHandle;
+ class SocketStreamError;
+ class WebSocketChannelClient;
+
+ class WebSocketChannel : public RefCounted<WebSocketChannel>, public SocketStreamHandleClient, public ThreadableWebSocketChannel {
+ public:
+ static PassRefPtr<WebSocketChannel> create(ScriptExecutionContext* context, WebSocketChannelClient* client, const KURL& url, const String& protocol) { return adoptRef(new WebSocketChannel(context, client, url, protocol)); }
+ virtual ~WebSocketChannel();
+
+ virtual void connect();
+ virtual bool send(const String& message);
+ virtual unsigned long bufferedAmount() const;
+ virtual void close();
+ virtual void disconnect(); // Will suppress didClose().
+
+ virtual void suspend();
+ virtual void resume();
+
+ virtual void didOpen(SocketStreamHandle*);
+ virtual void didClose(SocketStreamHandle*);
+ virtual void didReceiveData(SocketStreamHandle*, const char*, int);
+ virtual void didFail(SocketStreamHandle*, const SocketStreamError&);
+ virtual void didReceiveAuthenticationChallenge(SocketStreamHandle*, const AuthenticationChallenge&);
+ virtual void didCancelAuthenticationChallenge(SocketStreamHandle*, const AuthenticationChallenge&);
+
+ using RefCounted<WebSocketChannel>::ref;
+ using RefCounted<WebSocketChannel>::deref;
+
+ protected:
+ virtual void refThreadableWebSocketChannel() { ref(); }
+ virtual void derefThreadableWebSocketChannel() { deref(); }
+
+ private:
+ WebSocketChannel(ScriptExecutionContext*, WebSocketChannelClient*, const KURL&, const String& protocol);
+
+ bool appendToBuffer(const char* data, size_t len);
+ void skipBuffer(size_t len);
+ bool processBuffer();
+ void resumeTimerFired(Timer<WebSocketChannel>* timer);
+
+ ScriptExecutionContext* m_context;
+ WebSocketChannelClient* m_client;
+ WebSocketHandshake m_handshake;
+ RefPtr<SocketStreamHandle> m_handle;
+ char* m_buffer;
+ size_t m_bufferSize;
+
+ Timer<WebSocketChannel> m_resumeTimer;
+ bool m_suspended;
+ bool m_closed;
+ bool m_shouldDiscardReceivedData;
+ unsigned long m_unhandledBufferedAmount;
+
+ unsigned long m_identifier; // m_identifier == 0 means that we could not obtain a valid identifier.
+ };
+
+} // namespace WebCore
+
+#endif // ENABLE(WEB_SOCKETS)
+
+#endif // WebSocketChannel_h