connection.h Example File

network-chat/connection.h
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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 = 0); Connection(qintptr socketDescriptor, QObject *parent = 0); ~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