void ServerConnection::queueFrame(quint32 frameNumber, QByteArray frameData)
{
Frame f(frameNumber, frameData);
// append to queue of this connection
m_frameQueue.append(f);
if( m_frameNumbersInFlight.size() < MAX_FRAMES_IN_FLIGHT )
{
sendData();
}
// we start dropping frames when the queue is at MAX_FRAME_QUEUE
// unless we are set to lossless, then we
// give the server a signal to throttle
if(m_frameQueue.size() > MAX_FRAME_QUEUE)
{
if( m_lossless )
{
if( !m_waiting )
{
m_waiting = true;
emit waitingOnClient(this, m_waiting);
}
}
else
{
// drop the oldest frame
Frame f = m_frameQueue.takeFirst();
qDebug() << "Connection " << m_tcpSocket->peerAddress().toString() << ":"
<< m_tcpSocket->peerPort() << " dropped frame " << f.serial;
}
}
emit scheduleSend();
}
void ServerConnection::queueFrame(quint32 frameNumber, QByteArray frameData)
{
if( m_tcpSocket == 0 )
return;
Frame f(frameNumber, frameData);
// append to queue of this connection
m_frameQueue.append(f);
if( m_frameNumbersInFlight.size() < m_maxFramesInFlight )
{
sendData();
}
// we start dropping frames when the queue is at m_maxFramesInQueue
// unless we are set to lossless, then we
// give the server a signal to throttle
// check if they are too old
/*if(m_frameQueue.size() > m_maxFramesInQueue)
{
while( m_frameQueue.size() > 0 )
{
const Frame& f = m_frameQueue.first();
if( f.time.elapsed() < 5000 )
break;
qWarning() << tr("Frame %1 timed out after %2 msecs.").arg(f.serial).arg(f.time.elapsed());
m_frameQueue.removeFirst();
}
}*/
if(m_frameQueue.size() > m_maxFramesInQueue)
{
if( m_lossless )
{
if( !m_waiting )
{
m_waiting = true;
emit waitingOnClient(this, m_waiting);
}
}
else
{
// drop the oldest frame
Frame f = m_frameQueue.takeFirst();
if (getAcknowledgeNeeded())
{
qDebug() << "Connection " << m_tcpSocket->peerAddress().toString() << ":"
<< m_tcpSocket->peerPort() << " dropped frame " << f.serial;
}
}
}
emit scheduleSend();
}
ServerConnection::ServerConnection(int socketDescriptor) :
QObject(0),
m_tcpSocket(0),
m_socketDescriptor(socketDescriptor),
m_errorString("No error string set"),
m_waiting(false),
m_lossless(false),
m_blockSize(0)
{
connect( this, SIGNAL( scheduleSend()), this, SLOT(sendData()), Qt::QueuedConnection );
}
ServerConnection::ServerConnection(int socketDescriptor, bool lossless, int maxFrameQueue, int maxFramesInFlight) :
QObject(0),
m_tcpSocket(0),
m_socketDescriptor(socketDescriptor),
m_errorString("no error"),
m_waiting(false),
m_lossless(lossless),
m_maxFramesInQueue(maxFrameQueue),
m_maxFramesInFlight(maxFramesInFlight),
m_blockSize(0)
{
connect( this, SIGNAL( scheduleSend()), this, SLOT(sendData()), Qt::QueuedConnection );
}
int TCPConnectionHandler::open (void * )
{
int result = inherited::open ();
if (!serverSide_)
{
ACE_Message_Block *buffer = new ACE_Message_Block (TCPBytesToSend);
char *bufferData = buffer->wr_ptr ();
int i;
for (i = buffer->size () - 1; i >= 0; --i)
bufferData[ i ] = static_cast< char > (i);
buffer->wr_ptr (buffer->size ());
if (0 != (scheduleSend (buffer)))
ACE_ERROR_RETURN ((LM_ERROR,
ACE_TEXT ("Cannot schedule initial send\n")),
-1);
}
return result;
}
int TCPConnectionHandler::handle_input (ACE_HANDLE handle)
{
ACE_UNUSED_ARG (handle);
ACE_Message_Block *buffer = new ACE_Message_Block (TCPBytesToSend);
int bytesReceived = peer_.recv (buffer->wr_ptr (), buffer->space ());
if (bytesReceived > 0)
{
totalReceived_ += bytesReceived;
if (serverSide_ || --pingsNo_ > 0) // echo received buffer
{
buffer->wr_ptr (bytesReceived);
int result = scheduleSend (buffer);
if (0 > result)
ACE_ERROR_RETURN ((LM_ERROR,
ACE_TEXT (" (%P) %p\n"),
ACE_TEXT ("Cannot schedule TCP reply")),
-1);
}
else
buffer->release ();
return 0;
}
if (errno != EWOULDBLOCK)
ACE_ERROR_RETURN ((LM_ERROR,
ACE_TEXT (" (%P:%p (%d)\n"),
ACE_TEXT ("TCPConnectionHandler::handle_input call with no data on handle "), handle),
-1);
ACE_ERROR ((LM_WARNING,
ACE_TEXT (" (%P:%p (%d)\n"),
ACE_TEXT ("TCPConnectionHandler::handle_input call with no data on handle "), handle));
return 0;
}
