Hi,

I want to use QUdpScoket Multicast ,but readyRead() signal don't emit.
Confirming that datagrams can be received at WireShark and SocketDebbugger.
Firewall is Invalidation. Bind, connect, joinMulticast is true. I never get socket errorString.
But readyRead() is don't emit. Why ?

Qt Code: 
  1. void Udp::fnUdpSetting(QString localIP,quint16 multicastPort,QString multicastIP)
  2. {
  3.     m_pUdpSockRecv = new QUdpSocket(this);
  4.  
  5.  
  6.     connect(m_pUdpSockRecv, SIGNAL( readyRead() ), this, SLOT( fnUdpRecvData() ));
  7.  
  8.     if( m_pUdpSockRecv->bind( QHostAddress( localIP ) , multicastPort, QUdpSocket::DefaultForPlatform) ){
  9.         if( m_pUdpSockRecv->joinMulticastGroup( QHostAddress( multicastIP ) )) {
  10.             qDebug() << "Connection Success";
  11.         } else {
  12.             qDebug() << "Join Error";
  13.         }
  14.     }
  15.     else {
  16.         qDebug() << "Bind Error";
  17.     }
  18.  
  19. }
To copy to clipboard, switch view to plain text mode 


The IP and Port I'm using are
localIP: 192.168.0.122
multicastPort: 49871
multicastIP 239.0.0.15


I don't get any errors or anything, so I have no idea.
Can someone help me?
Thanks.