JoinMulticastGroup Fail with Unknown Error Linux

ricox

Hi,
I have a big problem, I developed an application that join a Multicast group (225.0.0.10 port 3665), in Windows all done! it's fine. porting application in Linux and JoinMulticastGroup Fail with error -1 (unknown).
Linux Firewall is OFF. Linux is a Mint 14.

QtCreator 2.8.1 on Qt 5.1.1 and GCC 4.6.1 32bit. Local eth0 IP is 10.34.10.13

The only strange warning I have is in Application output at App start it show this:
"Debugging starts
&"warning: GDB: Failed to set controlling terminal: Inappropriate ioctl for device\n"

here is simple test code:

@ QUdpSocket *consolesUdpSocket = new QUdpSocket(this);

if(!(consolesUdpSocket->bind(QHostAddress("10.34.10.13"),3665, QUdpSocket::ShareAddress)))
{
    return ;
}

if(consolesUdpSocket->state()!=QAbstractSocket::BoundState)
    return;

QUdpSocket::SocketError  e;
e = QUdpSocket::TemporaryError;

if(!(consolesUdpSocket->joinMulticastGroup(QHostAddress("225.0.0.10"))))
{

    ui->lineEdit->setText(consolesUdpSocket->errorString());
    //e=QUdpSocket::TemporaryError;
    return ;
}
consolesUdpSocket->setSocketOption(QAbstractSocket::MulticastLoopbackOption,false);

connect(consolesUdpSocket, SIGNAL(readyRead()),
        this, SLOT(processConsolesPendingDatagrams()));

delete consolesUdpSocket;

@

Thank's a lot

ricox

Anyone can help me??

ricox

Please I need help ... my brain is near to explosion!!