Implemented basic listening functionality

messagingserver/server.cpp

@@ -0,0 +1,44 @@
+#include "server.h"
+
+#include <QTcpServer>
+#include <QDateTime>
+#include <QTimerEvent>
+
+#include "client.h"
+
+Server::Server(QObject *parent) :
+    QObject(parent),
+    m_server(new QTcpServer(this))
+{
+    if(!m_server->listen(QHostAddress::Any, 1234))
+        qFatal("could not start listening %s", m_server->errorString());
+
+    connect(m_server, &QTcpServer::newConnection, this, &Server::newConnection);
+
+    m_timerId = startTimer(1000);
+}
+
+void Server::timerEvent(QTimerEvent *event)
+{
+    if(event->timerId() == m_timerId)
+        Q_EMIT distribute(QDateTime::currentDateTime().toString("dd.MM.yyyy HH:mm:ss\r\n").toUtf8());
+    else
+        QObject::timerEvent(event);
+}
+
+void Server::newConnection()
+{
+    auto socket = m_server->nextPendingConnection();
+    if(!socket)
+    {
+        qWarning() << "null socket received";
+        return;
+    }
+
+    auto client = new Client(socket, this);
+    connect(this, &Server::distribute, client, qOverload<const QByteArray &>(&Client::write));
+    m_clients.insert(client);
+    connect(client, &QObject::destroyed, this, [this, client](){
+        m_clients.remove(client);
+    });
+}