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50 #ifndef MAINWINDOW_H
51 #define MAINWINDOW_H
52 
53 #include <QMainWindow>
54 #include <QSharedPointer>
55 #include <QVector>
56 
57 QT_BEGIN_NAMESPACE
58 
59 namespace Ui {
60 
61 class MainWindow;
62 
63 }
64 
65 class QHostAddress;
66 class QHostInfo;
67 
68 class DtlsAssociation;
69 
70 QT_END_NAMESPACE
71 
72 QT_USE_NAMESPACE
73 
74 class MainWindow : public QMainWindow
75 {
76     Q_OBJECT
77 
78 public:
79     explicit MainWindow(QWidget *parent = nullptr);
80     ~MainWindow();
81 
82 private slots:
83 
84     void addErrorMessage(const QString &message);
85     void addWarningMessage(const QString &message);
86     void addInfoMessage(const QString &message);
87     void addServerResponse(const QString &clientInfo, const QByteArray &datagram,
88                            const QByteArray &plainText);
89 
90     void on_connectButton_clicked();
91     void on_shutdownButton_clicked();
92 
93     void lookupFinished(const QHostInfo &hostInfo);
94 
95 private:
96     void updateUi();
97     void startNewConnection(const QHostAddress &address);
98 
99     Ui::MainWindow *ui = nullptr;
100 
101     using AssocPtr = QSharedPointer<DtlsAssociation>;
102     QVector<AssocPtr> connections;
103 
104     QString nameTemplate;
105     unsigned nextId = 0;
106 
107     quint16 port = 0;
108     int lookupId = -1;
109 };
110 
111 #endif // MAINWINDOW_H
112