networkcontroller.cpp Example File

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  #include "networkcontroller.h"

  NetworkController::NetworkController(QObject *parent) :
      QObject(parent)
  {
      QObject::connect(&m_server, &QTcpServer::newConnection, this, &NetworkController::newConnection);

      if (!m_server.listen(QHostAddress::Any, 8080)) {
          qDebug() << "Failed to run http server";
      }
  }

  void NetworkController::newConnection()
  {
      QTcpSocket *socket = m_server.nextPendingConnection();

      if (!socket)
          return;

      QObject::connect(socket, &QAbstractSocket::disconnected, this, &NetworkController::disconnected);
      QObject::connect(socket, &QIODevice::readyRead, this, &NetworkController::readyRead);
  }

  void NetworkController::disconnected()
  {
      QTcpSocket *socket = qobject_cast<QTcpSocket *>(sender());
      if (!socket)
          return;

      socket->disconnect();
      socket->deleteLater();
  }

  void NetworkController::readyRead()
  {
      QTcpSocket *socket = qobject_cast<QTcpSocket *>(sender());
      if (!socket || socket->state() == QTcpSocket::ClosingState)
          return;

      QString requestData = socket->readAll();
      QStringList list = requestData.split(' ');
      QString path = list[1];
      list = path.split('/');

      QByteArray reply;
      if (list.count() == 3) {
          socket->write("HTTP/1.1 200 OK\r\n");
          reply = QStringLiteral("Command accepted: %1 %2").arg(list[1], list[2]).toUtf8();
          emit commandAccepted(list[1], list[2]);
      } else {
          socket->write("HTTP/1.1 404 Not Found\r\n");
          reply = "Command rejected";
      }

      socket->write("Content-Type: text/plain\r\n");
      socket->write(QStringLiteral("Content-Length: %1\r\n").arg(reply.size()).toUtf8());
      socket->write("Connection: close\r\n");
      socket->write("\r\n");
      socket->write(reply);
      socket->disconnectFromHost();
  }