mainwindow.cpp

#include "mainwindow.h"
#include <QVBoxLayout>
#include <QHostAddress>
#include <QXmlStreamReader>

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
{
    // GUI setup
    textDisplay = new QTextEdit(this);
    textDisplay->setReadOnly(true);
    setCentralWidget(textDisplay);
    setWindowTitle("UDP XML Receiver");

    // UDP socket setup
    socket = new QUdpSocket(this);
    bool bound = socket->bind(QHostAddress::AnyIPv4, 50000, QUdpSocket::ShareAddress);
    if (!bound) {
        textDisplay->setText("Failed to bind to port 50000.");
        return;
    }

    connect(socket, &QUdpSocket::readyRead, this, &MainWindow::processDatagrams);
}

MainWindow::~MainWindow() {}

void MainWindow::processDatagrams()
{
    while (socket->hasPendingDatagrams()) {
        QByteArray datagram;
        datagram.resize(static_cast<int>(socket->pendingDatagramSize()));
        socket->readDatagram(datagram.data(), datagram.size());

        QString xmlString = QString::fromUtf8(datagram);
        textDisplay->append("Received XML:\n" + xmlString + "\n---");
    }
}