Added minimal UDP client and server examples

tmp/udp/udp_client/main.cpp

@@ -0,0 +1,39 @@
+#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;
+}

tmp/udp/udp_client/udp_client.pro

@@ -0,0 +1,6 @@
+QT = core network
+
+CONFIG += c++17 cmdline
+
+SOURCES += \
+        main.cpp