autopilot/misc/udp/udp_client/main.cpp

#include <QCoreApplication>
#include <QUdpSocket>
#include <QHostAddress>
#include <QThread>
#include <QJsonObject>
#include <QJsonDocument>

int main(int argc, char *argv[]) {
    QCoreApplication a(argc, argv);

    if (argc != 2) {
        qDebug() << "Give port number of server as only parameter";
        return 1;
    }

    QUdpSocket udpSocket;
    quint16 receiverPort = atoi(argv[1]);

    for (int i = 0; i < 10000000 ; i++) {
        QJsonObject json;
        json["value"] = i;
        QJsonDocument jsonDoc(json);
        QByteArray datagram = jsonDoc.toJson();

        qint64 bytesSent = udpSocket.writeDatagram(datagram, QHostAddress("127.0.0.1"), receiverPort);

        if (bytesSent == -1) {
            qWarning("Failed to send the datagram: %s", qPrintable(udpSocket.errorString()));
            return 1;
        }
        else {
            qDebug("Datagram sent successfully");
        }

        QThread::msleep(100);
    }

    return 0;
}