{
// create a QUDP socket
// The most common way to use QUdpSocket class is
// to bind to an address and port using bind()
// bool QAbstractSocket::bind(const QHostAddress & address,
// quint16 port = 0, BindMode mode = DefaultForPlatform)
connect(socket, SIGNAL(readyRead()), this, SLOT(readyRead()));
}
void MyUDP::HelloUDP()
{
quint16 cameraPort = 32197;
qint64 deg_num = socket->readDatagram(Data.data() ,964, &camera_loc, &cameraPort);
qDebug() << "Deg_num: " << deg_num; //this returns -1. Therefore, it seems it can't read any data from camera_loc.
// Sends the datagram datagram
// to the host address and at port.
// qint64 QUdpSocket::writeDatagram(const QByteArray & datagram,
// const QHostAddress & host, quint16 port)
}
void MyUDP::readyRead()
{
// when data comes in
buffer.resize(socket->pendingDatagramSize());
quint16 senderPort = 32197;
// qint64 QUdpSocket::readDatagram(char * data, qint64 maxSize,
// QHostAddress * address = 0, quint16 * port = 0)
// Receives a datagram no larger than maxSize bytes and stores it in data.
// The sender's host address and port is stored in *address and *port
// (unless the pointers are 0).
socket->readDatagram(buffer.data(), buffer.size(),
&sender, &senderPort);
qDebug() << "Message from: " << sender.toString();
qDebug() << "Message port: " << senderPort;
qDebug() << "Message: " << buffer;
}
MyUDP::MyUDP(QObject *parent) :
QObject(parent)
{
// create a QUDP socket
socket = new QUdpSocket(this);
socket_cam = new QUdpSocket(this);
// The most common way to use QUdpSocket class is
// to bind to an address and port using bind()
// bool QAbstractSocket::bind(const QHostAddress & address,
// quint16 port = 0, BindMode mode = DefaultForPlatform)
socket->bind(QHostAddress::LocalHost, 1234);
connect(socket, SIGNAL(readyRead()), this, SLOT(readyRead()));
}
void MyUDP::HelloUDP()
{
QByteArray Data;
QHostAddress camera_loc = QHostAddress("192.168.10.197");
quint16 cameraPort = 32197;
qint64 deg_num = socket->readDatagram(Data.data() ,964, &camera_loc, &cameraPort);
qDebug() << "Deg_num: " << deg_num; //this returns -1. Therefore, it seems it can't read any data from camera_loc.
// Sends the datagram datagram
// to the host address and at port.
// qint64 QUdpSocket::writeDatagram(const QByteArray & datagram,
// const QHostAddress & host, quint16 port)
socket->writeDatagram(Data, QHostAddress::LocalHost, 1234);
}
void MyUDP::readyRead()
{
// when data comes in
QByteArray buffer;
buffer.resize(socket->pendingDatagramSize());
QHostAddress sender = QHostAddress("192.168.10.197");
quint16 senderPort = 32197;
// qint64 QUdpSocket::readDatagram(char * data, qint64 maxSize,
// QHostAddress * address = 0, quint16 * port = 0)
// Receives a datagram no larger than maxSize bytes and stores it in data.
// The sender's host address and port is stored in *address and *port
// (unless the pointers are 0).
socket->readDatagram(buffer.data(), buffer.size(),
&sender, &senderPort);
qDebug() << "Message from: " << sender.toString();
qDebug() << "Message port: " << senderPort;
qDebug() << "Message: " << buffer;
}
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