// Processes incoming read events. They can come from the server or
// from the GPS device.
void GpsClient::processEvent( fd_set *fdMask )
{
if( ipcPort )
{
int sfd = clientData.getSock();
if( sfd != -1 && FD_ISSET( sfd, fdMask ) )
{
int loops = 0;
// Try to process several messages from the client in order. That
// is more effective as to wait for a new select call.
while( loops++ < 32 )
{
readServerMsg();
if( shutdown == true )
{
break;
}
// Check, if more bytes are available in the receiver buffer because we
// use blocking IO.
int bytes = 0;
// Number of bytes currently in the socket receiver buffer.
if( ioctl( sfd, FIONREAD, &bytes) == -1 )
{
qWarning() << "GpsClient::processEvent():"
<< "ioctl() returns with Errno="
<< errno
<< "," << strerror(errno);
break;
}
if( bytes <= 0 )
{
break;
}
}
}
}
if( fd != -1 && FD_ISSET( fd, fdMask ) )
{
if( readGpsData() == false )
{
// problem occurred, likely buffer overrun. we do restart the GPS
// receiving.
int error = errno; // Save errno
closeGps();
if( error == ECONNREFUSED )
{
// BT devices can reject a connection try. If we don't return here
// we run in an endless loop.
setShutdownFlag(true);
}
else
{
sleep(3);
// reopen connection
openGps( device.data(), ioSpeedDevice );
}
}
}
}
TcpClient::TcpClient(QObject * parent)
: QObject(parent)
{
QObject::connect(&m_Socket, SIGNAL(connected()), this, SLOT(connectionSuccess()));
QObject::connect(&m_Socket, SIGNAL(readyRead()), this, SLOT(readServerMsg()));
}
