QString mylocalip;
 const QList interfaces = QNetworkInterface::allInterfaces();
 foreach(QNetworkInterface ip, interfaces)
 {
 if (ip.humanReadableName() == QStringLiteral(“以太网”))
 {
 //if (ip.type() == QNetworkInterface::Ethernet)
 {
 const QList iplist = ip.addressEntries();
 foreach(QNetworkAddressEntry net, iplist)
 {
 mylocalip = net.ip().toString();
 }
 }
 }
 }
 udpSocket = new QUdpSocket(this);
 udpSocket->bind(QHostAddress(mylocalip), 10004/, QUdpSocket::ShareAddress/);
 connect(udpSocket, SIGNAL(readyRead()), this, SLOT(VoiceReadyReadSlot()));
 void VideoForm::VoiceReadyReadSlot()
 {
 video vp1;
 int type = 0;
 memset(&vp1, 0, sizeof(vp1));
 while (udpSocket->hasPendingDatagrams()) {
	//int len = udpSocket->pendingDatagramSize();   //获取字节数//char* buf = new char[len];udpSocket->readDatagram((char*)&vp1, sizeof(vp1));}if(udpSocket!=NULL)udpSocket->writeDatagram((const char*)&vp, sizeof(vp), QHostAddress(friendip), 1004);   //给对方发送
 
}