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** Copyright (C) 2017 The Qt Company Ltd.
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#ifndef SOCKETCANBACKEND_H
#define SOCKETCANBACKEND_H

#include <QtSerialBus/qcanbusframe.h>
#include <QtSerialBus/qcanbusdevice.h>
#include <QtSerialBus/qcanbusdeviceinfo.h>

#include <QtCore/qsocketnotifier.h>
#include <QtCore/qstring.h>
#include <QtCore/qvariant.h>

// The order of the following includes is mandatory, because some
// distributions use sa_family_t in can.h without including socket.h
#include <sys/socket.h>
#include <sys/uio.h>
#include <linux/can.h>
#include <sys/time.h>

QT_BEGIN_NAMESPACE

class SocketCanBackend : public QCanBusDevice
{
    Q_OBJECT
public:
    explicit SocketCanBackend(const QString &name);
    ~SocketCanBackend();

    bool open() override;
    void close() override;

    void setConfigurationParameter(int key, const QVariant &value) override;

    bool writeFrame(const QCanBusFrame &newData) override;

    QString interpretErrorFrame(const QCanBusFrame &errorFrame) override;

    static QList<QCanBusDeviceInfo> interfaces();

private Q_SLOTS:
    void readSocket();

private:
    void resetConfigurations();
    bool connectSocket();
    bool applyConfigurationParameter(int key, const QVariant &value);

    canfd_frame m_frame;
    sockaddr_can m_address;
    msghdr m_msg;
    iovec m_iov;
    sockaddr_can m_addr;
    char m_ctrlmsg[CMSG_SPACE(sizeof(timeval)) + CMSG_SPACE(sizeof(__u32))];

    qint64 canSocket = -1;
    QSocketNotifier *notifier = nullptr;
    QString canSocketName;
    bool canFdOptionEnabled = false;
};

QT_END_NAMESPACE

#endif // SOCKETCANBACKEND_H