tcpsocket.h
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/* ****************************************************************************
* Copyright 2019 Open Systems Development BV *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
* copy of this software and associated documentation files (the "Software"), *
* to deal in the Software without restriction, including without limitation *
* the rights to use, copy, modify, merge, publish, distribute, sublicense, *
* and/or sell copies of the Software, and to permit persons to whom the *
* Software is furnished to do so, subject to the following conditions: *
* *
* The above copyright notice and this permission notice shall be included in *
* all copies or substantial portions of the Software. *
* *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR *
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, *
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL *
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER *
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING *
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER *
* DEALINGS IN THE SOFTWARE. *
* ***************************************************************************/
#ifndef OSDEV_COMPONENTS_CTCPSOCKET_H
#define OSDEV_COMPONENTS_CTCPSOCKET_H
#include <QObject>
//#include <QTimer>
//#include <QTcpSocket>
//#include <QHostAddress>
//#include <QDataStream>
//#include <QString>
#include <memory>
class QTcpSocket;
class QTimer;
namespace osdev {
namespace components {
/**
* @brief Wrapper around QTcpSocket
*/
class TcpSocket : public QObject
{
Q_OBJECT
public:
/**
* @brief Create a TcpSocket connecting to the given address
* @param ipAddress Host to connect to
* @param portNumber Port number to connect at
*/
TcpSocket( const QString& ipAddress, int portNumber );
/**
* @brief Create a TcpSocket based on an existing QTcpSocket
* @param pSocket Socket used. This class does NOT take ownership of the
* provided socket.
*/
TcpSocket( QTcpSocket *pSocket );
/// Deleted copy-constructor
TcpSocket(const TcpSocket&) = delete;
/// Deleted assignment operator
TcpSocket& operator=(const TcpSocket&) = delete;
/// Deleted move-constructor
TcpSocket(TcpSocket&&) = delete;
/// Deleted move operator
TcpSocket& operator=(TcpSocket&&) = delete;
/// @brief Destructor
~TcpSocket();
/**
* @brief Retrieve the last error registered in the socket
* @return Error string
*/
QString showError();
/**
* @brief See if a connection is available
* @return True if a connection is available, false otherwise
*/
bool isConnected();
public slots:
/**
* @brief Slot called to send data
* @param sData Data to send
* @param pSocket Socket to which to send. If it is not equal to this, the
* slot does nothing and returns
*/
void slotSendData( const QString &sData, TcpSocket *pSocket );
/**
* @brief Updates the current QTcpSocket used
* @param pSocket New socket
*/
void slotSetSocket( QTcpSocket *pSocket );
/// @brief Slot called when a socket gets connected
void slotConnected();
/// @brief Slot called when a socket gets disconnected
void slotDisconnected();
signals:
/**
* @brief Signal emitted when data is received
* @param sData Block of data received
* @param pSocket Receiving socket
*/
void signalDataReceived( const QString &sData, TcpSocket *pSocket );
/**
* @brief Signal emitted when data was sent
* @param pSocket Sending socket
*/
void signalDataSent( TcpSocket *pSocket );
/**
* @brief Signal emitted when data is being received
* @param pSocket Receiving socket
*/
void signalReceivingData( TcpSocket *pSocket );
/**
* @brief Signal emitted when a socket gets connected
* @param pSocket Socket that gets connected
*/
void signalConnected( TcpSocket *pSocket );
/**
* @brief Signal emitted when a socket gets disconnected
* @param pSocket Socket that gets disconnected
*/
void signalDisconnected( TcpSocket *pSocket );
private slots:
/// @brief Slot called when a socket is ready to read
void slotReadyRead();
/// @brief Emits the signalDataSent when all data was sent
void chkSendBuffer();
private:
/// @brief Connects the socket signals to the slots of this class
void connectSocketSignals();
/// @brief Disconnects the socket signals to the slots of this class
void disconnectSocketSignals();
QTcpSocket *m_pSocket; ///< Current communication socket
int m_blockSize; ///< Maximum block size
QString m_dataBuffer; ///< Data to be sent
std::unique_ptr<QTimer> m_pTimer; ///< Periodic check if all data was sent
};
} // End namespace components
} // End namespace osdev
#endif // OSDEV_COMPONENTS_CTCPSOCKET_H