socketreader.h

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#ifndef SOCKETREADER_H
#define SOCKETREADER_H
 
#include <QObject>
#include <QLocalSocket>
#include <QVector>
 
class SocketReader : public QObject
{
    Q_OBJECT
    Q_DISABLE_COPY(SocketReader)
 
public:
 
    SocketReader(QObject* parent = 0);
 
    ~SocketReader();
 
    bool initiateConnection(int sessionId);
 
    bool dropConnection();
 
    QLocalSocket* socket();
 
    bool read(void* buffer, int size);
 
    template<typename T>
    bool read(QVector<T>& values);
 
    bool isConnected();
 
private:
    static const char* channelIDString;
 
    bool readSocketTag();
 
    QLocalSocket* socket_; 
    bool tagRead_; 
};
 
template<typename T>
bool SocketReader::read(QVector<T>& values)
{
    if (!socket_) {
        return false;
    }
 
    unsigned int count;
    if(!read((void*)&count, sizeof(unsigned int)))
    {
        socket_->readAll();
        return false;
    }
    if(count > 1000)
    {
        qWarning() << "Too many samples waiting in socket. Flushing it to empty";
        socket_->readAll();
        return false;
    }
    values.resize(values.size() + count);
    if(!read((void*)values.data(), sizeof(T) * count))
    {
        qWarning() << "Error occured while reading data from socket: " << socket_->errorString();
        socket_->readAll();
        return false;
    }
    return true;
}
 
#endif // SOCKETREADER_H