Example UDP server project

simulation/VirtualLedBoard/VirtualLedBoard.pro

@@ -1,4 +1,5 @@
 QT       += core gui
+QT       += network
 
 greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
 
@@ -10,10 +11,12 @@ CONFIG += c++11
 
 SOURCES += \
     main.cpp \
-    mainwindow.cpp
+    mainwindow.cpp \
+    udpserver.cpp
 
 HEADERS += \
-    mainwindow.h
+    mainwindow.h \
+    udpserver.h
 
 FORMS += \
     mainwindow.ui

simulation/VirtualLedBoard/udpserver.cpp

@@ -0,0 +1,35 @@
+#include "udpserver.h"
+#include <QUdpSocket>
+#include <QNetworkDatagram>
+
+#define UDP_IMAGE_PORT  4242
+
+UdpServer::UdpServer(QObject *parent)
+    : QAbstractItemModel(parent)
+{
+    initSocket();
+}
+
+void UdpServer::initSocket()
+{
+    this->mUdpSocket = new QUdpSocket(this);
+    this->mUdpSocket->bind(QHostAddress::LocalHost, UDP_IMAGE_PORT);
+
+    connect(this->mUdpSocket, &QUdpSocket::readyRead,
+            this, &UdpServer::readPendingDatagrams);
+}
+
+
+void UdpServer::readPendingDatagrams()
+{
+    while (this->mUdpSocket->hasPendingDatagrams()) {
+        QNetworkDatagram datagram = this->mUdpSocket->receiveDatagram();
+        processTheDatagram(datagram);
+    }
+}
+
+void UdpServer::processTheDatagram(QNetworkDatagram datagram) {
+    if (datagram.isValid()) {
+        qDebug() << "Received datagram:" << datagram.data().size();
+    }
+}

simulation/VirtualLedBoard/udpserver.h

@@ -0,0 +1,22 @@
+#ifndef UDPSERVER_H
+#define UDPSERVER_H
+
+#include <QAbstractItemModel>
+#include <QUdpSocket>
+
+class UdpServer : public QAbstractItemModel
+{
+    Q_OBJECT
+
+public:
+    explicit UdpServer(QObject *parent = nullptr);
+
+
+private:
+    void initSocket();
+    void readPendingDatagrams();
+    QUdpSocket *mUdpSocket;
+    void processTheDatagram(QNetworkDatagram datagram);
+};
+
+#endif // UDPSERVER_H