QUdpSocket reading issue

I have an issue when I receive data from a UDP client. The code that I used is:

MyUDP::MyUDP(QObject *parent) :
    QObject(parent)
{
    socket = new QUdpSocket(this);

    socket->bind(QHostAddress("192.168.1.10"),2000);

    connect(socket, SIGNAL(readyRead()), this, SLOT(readyRead()));

    qDebug() << "Socket establert";
}

void MyUDP::HelloUDP()
{
    QByteArray Data;
    Data.append("R");

    socket->writeDatagram(Data, QHostAddress("192.168.1.110"), 5001);

    qDebug() << "Enviat datagrama";
}

void MyUDP::readyRead()
{
    QByteArray buffer;

    buffer.resize(socket->pendingDatagramSize());

    QHostAddress sender;
    quint16 senderPort;

    socket->readDatagram(buffer.data(), buffer.size(), &sender, &senderPort);

    qDebug() << "Message from: " << sender.toString();
    qDebug() << "Message port: " << senderPort;
    qDebug() << "Message: " << buffer;

    qDebug() << "Size: " << buffer.size();
    qDebug() << "Pending datagrams: " << socket->hasPendingDatagrams();

    QString str(buffer);
    QString res = str.toAscii().toHex(); qDebug() << res;
}

The problem is that in Wireshark I receive this data (all the data):

Internet Protocol Version 4, Src: 192.168.1.110, Dst: 192.168.1.10
User Datagram Protocol, Src Port: 5001, Dst Port: 2000
Data (20 bytes)
    Data: 58bf80000059bf800000410000000053bf800000
    [Length: 20]

But at the console output of my application I receive this trunkated data:

Message from:  "192.168.1.110" 
Message port:  5001 
Message:  "X¿
Size:  20 
Pending datagrams:  false 
"58bf80" 

You can see that only the first part of data "58bf80" is received. It seems that the datagram no has any limitation, and the socket runs fine. I don't see what may be happening.

Thanks in advance.

The truncation probably happens in conversion from QByteArray to QString, the string getting truncated in null terminator (byte with value 0).

To correctly convert from QByteArray to hex encoded QString use toHex function, like on the following example:

QByteArray data; //The data you got!
QString str = QString(data.toHex()); //Perform the conversion to hex encoded and to string