serverconnection.h

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#ifndef _PVSSERVERCONNECTION_H_
#define _PVSSERVERCONNECTION_H_

#include <QSslSocket>
#include "../../shared/networkmessage.h"
#include "../connectwindow/connectwindow.h"

class BlankScreen;

class ServerConnection : public QObject
{
   Q_OBJECT

private:
   QSslSocket *_socket;
   BlankScreen *_blank;
   int _timerId, _timerDelete, _timerConnectionCheck;
   int _jpegQuality;
   int _authed;
   bool _autoConnect;
   int _isLocalConnection;
   qint64 _lastData;

   NetworkMessage _fromServer, _toServer;
   QByteArray _expectedFingerprint;
   QString _passwd;
   QByteArray _myChallenge;
   QByteArray _sessionName;
   QByteArray _certHash;

   void handleMsg();

   void checkLocalConnection();

public:
   ServerConnection(const QString& host, quint16 port, const QByteArray& sessionName, const QByteArray& certHash, bool autoConnect);
   void disconnectFromServer();
   ~ServerConnection() override;
   inline bool isConnected() const
   {
      return _socket != nullptr && _socket->state() == QAbstractSocket::ConnectedState;
   }

   QString getPeerAdress() const { return _socket->peerAddress().toString(); }

   bool isLocalConnection() {
      if (_isLocalConnection == -1) {
         checkLocalConnection();
      }
      return _isLocalConnection == 1;
   }

   void sendMessage(NetworkMessage& message);
   void sendAttention(bool on);

protected:
   void timerEvent(QTimerEvent *event) override;

private slots:
   void sslErrors(const QList<QSslError> & errors); // triggered for errors that occur during SSL negotiation
   void sock_dataArrival(); // triggered if data is available for reading
   void sock_closed(); // triggered if the socket is closed
   void sock_error(QAbstractSocket::SocketError errcode); // triggered if an error occurs on the socket
   void sock_connected(); // triggered if the connection is established and ready to use

   void onVncServerStartStop(int port, const QString &ropass, const QString &rwpass); // triggered if the local vnc server was started

public slots:
   void onVncViewerStartStop(bool started, int clientId);

signals:
   void openVnc(const QString& host, int port, const QString& passwd, bool ro, bool fullscreen, const QString& caption, const int clientId, const QByteArray& rawThumb);
   void closeVnc();
   void stateChange(ConnectWindow::ConnectionState state);
   void disconnected(ServerConnection* connection);
   void attentionChanged(bool state);
};

#endif