SocketStreamHandle.cpp [plain text]
#include "config.h"
#include "SocketStreamHandle.h"
#include "SocketStreamHandleClient.h"
namespace WebCore {
const unsigned bufferSize = 100 * 1024 * 1024;
SocketStreamHandle::SocketStreamHandle(const URL& url, SocketStreamHandleClient& client)
: m_url(url)
, m_client(client)
, m_state(Connecting)
{
}
SocketStreamHandle::SocketStreamState SocketStreamHandle::state() const
{
return m_state;
}
bool SocketStreamHandle::send(const char* data, size_t length)
{
if (m_state == Connecting || m_state == Closing)
return false;
if (!m_buffer.isEmpty()) {
if (m_buffer.size() + length > bufferSize) {
return false;
}
m_buffer.append(data, length);
m_client.didUpdateBufferedAmount(static_cast<SocketStreamHandle&>(*this), bufferedAmount());
return true;
}
size_t bytesWritten = 0;
if (m_state == Open) {
if (auto result = platformSend(data, length))
bytesWritten = result.value();
else
return false;
}
if (m_buffer.size() + length - bytesWritten > bufferSize) {
return false;
}
if (bytesWritten < length) {
m_buffer.append(data + bytesWritten, length - bytesWritten);
m_client.didUpdateBufferedAmount(static_cast<SocketStreamHandle&>(*this), bufferedAmount());
}
return true;
}
void SocketStreamHandle::close()
{
if (m_state == Closed)
return;
m_state = Closing;
if (!m_buffer.isEmpty())
return;
disconnect();
}
void SocketStreamHandle::disconnect()
{
auto protect = makeRef(static_cast<SocketStreamHandle&>(*this));
platformClose();
m_state = Closed;
}
bool SocketStreamHandle::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 {
auto result = platformSend(m_buffer.firstBlockData(), m_buffer.firstBlockSize());
if (!result)
return false;
size_t bytesWritten = result.value();
if (!bytesWritten)
return false;
pending = bytesWritten != m_buffer.firstBlockSize();
ASSERT(m_buffer.size() - bytesWritten <= bufferSize);
m_buffer.consume(bytesWritten);
} while (!pending && !m_buffer.isEmpty());
m_client.didUpdateBufferedAmount(static_cast<SocketStreamHandle&>(*this), bufferedAmount());
return true;
}
}