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| |
| #ifndef CONNECTION_H |
| #define CONNECTION_H |
| |
| #include <QCborStreamReader> |
| #include <QCborStreamWriter> |
| #include <QElapsedTimer> |
| #include <QHostAddress> |
| #include <QString> |
| #include <QTcpSocket> |
| #include <QTimer> |
| |
| static const int MaxBufferSize = 1024000; |
| |
| class Connection : public QTcpSocket |
| { |
| Q_OBJECT |
| |
| public: |
| enum ConnectionState { |
| WaitingForGreeting, |
| ReadingGreeting, |
| ReadyForUse |
| }; |
| enum DataType { |
| PlainText, |
| Ping, |
| Pong, |
| Greeting, |
| Undefined |
| }; |
| |
| Connection(QObject *parent = nullptr); |
| Connection(qintptr socketDescriptor, QObject *parent = nullptr); |
| ~Connection(); |
| |
| QString name() const; |
| void setGreetingMessage(const QString &message); |
| bool sendMessage(const QString &message); |
| |
| signals: |
| void readyForUse(); |
| void newMessage(const QString &from, const QString &message); |
| |
| protected: |
| void timerEvent(QTimerEvent *timerEvent) override; |
| |
| private slots: |
| void processReadyRead(); |
| void sendPing(); |
| void sendGreetingMessage(); |
| |
| private: |
| bool hasEnoughData(); |
| void processGreeting(); |
| void processData(); |
| |
| QCborStreamReader reader; |
| QCborStreamWriter writer; |
| QString greetingMessage; |
| QString username; |
| QTimer pingTimer; |
| QElapsedTimer pongTime; |
| QString buffer; |
| ConnectionState state; |
| DataType currentDataType; |
| int transferTimerId; |
| bool isGreetingMessageSent; |
| }; |
| |
| #endif |