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/*
* Copyright (C) 2009, 2011, 2012 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.
*/
#include "config.h"
#include "SocketStreamHandleBase.h"
#include "SocketStreamHandle.h"
#include "SocketStreamHandleClient.h"
namespace WebCore {
const unsigned int bufferSize = 100 * 1024 * 1024;
SocketStreamHandleBase::SocketStreamHandleBase(const KURL& url, SocketStreamHandleClient* client)
: m_url(url)
, m_client(client)
, m_state(Connecting)
{
}
SocketStreamHandleBase::SocketStreamState SocketStreamHandleBase::state() const
{
return m_state;
}
bool SocketStreamHandleBase::send(const char* data, int length)
{
if (m_state == Connecting || m_state == Closing)
return false;
if (!m_buffer.isEmpty()) {
if (m_buffer.size() + length > bufferSize) {
// FIXME: report error to indicate that buffer has no more space.
return false;
}
m_buffer.append(data, length);
if (m_client)
m_client->didUpdateBufferedAmount(static_cast<SocketStreamHandle*>(this), bufferedAmount());
return true;
}
int bytesWritten = 0;
if (m_state == Open)
bytesWritten = platformSend(data, length);
if (bytesWritten < 0)
return false;
if (m_buffer.size() + length - bytesWritten > bufferSize) {
// FIXME: report error to indicate that buffer has no more space.
return false;
}
if (bytesWritten < length) {
m_buffer.append(data + bytesWritten, length - bytesWritten);
if (m_client)
m_client->didUpdateBufferedAmount(static_cast<SocketStreamHandle*>(this), bufferedAmount());
}
return true;
}
void SocketStreamHandleBase::close()
{
if (m_state == Closed)
return;
m_state = Closing;
if (!m_buffer.isEmpty())
return;
disconnect();
}
void SocketStreamHandleBase::disconnect()
{
RefPtr<SocketStreamHandle> protect(static_cast<SocketStreamHandle*>(this)); // platformClose calls the client, which may make the handle get deallocated immediately.
platformClose();
m_state = Closed;
}
void SocketStreamHandleBase::setClient(SocketStreamHandleClient* client)
{
ASSERT(!client || (!m_client && m_state == Connecting));
m_client = client;
}
bool SocketStreamHandleBase::sendPendingData()
{
if (m_state != Open && m_state != Closing)
return false;
if (m_buffer.isEmpty()) {
if (m_state == Open)
return false;
if (m_state == Closing) {
disconnect();
return false;
}
}
bool pending;
do {
int bytesWritten = platformSend(m_buffer.firstBlockData(), m_buffer.firstBlockSize());
pending = bytesWritten != static_cast<int>(m_buffer.firstBlockSize());
if (bytesWritten <= 0)
return false;
ASSERT(m_buffer.size() - bytesWritten <= bufferSize);
m_buffer.consume(bytesWritten);
} while (!pending && !m_buffer.isEmpty());
if (m_client)
m_client->didUpdateBufferedAmount(static_cast<SocketStreamHandle*>(this), bufferedAmount());
return true;
}
} // namespace WebCore
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