client.cpp

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/****************************************************************************
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** Copyright (C) 2016 Kurt Pattyn <pattyn.kurt@gmail.com>.
** Contact: https://www.qt.io/licensing/
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** This file is part of the QtWebSockets module of the Qt Toolkit.
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#include "client.h"
#include <QtCore/QDebug>
#include <QtMath>
#include <QThread>
#include <chrono>
#include <QStringBuilder>
#include <thread>

#ifdef WIN32
#include <Windows.h>
#endif

QT_USE_NAMESPACE

Client::Client(const QUrl &url, bool debug, QObject *parent) :
    QObject(parent),
    m_url(url),
    m_debug(debug),timer_(this),timer2_(this)
{
    if (m_debug)
        qDebug() << "WebSocket server:" << url;
    connect(&m_webSocket, &QWebSocket::connected, this, &Client::onConnected);
    connect(&m_webSocket, &QWebSocket::disconnected, this, &Client::closed);
    m_webSocket.open(QUrl(url));
}

void Client::onConnected()
{
    if (m_debug)
        qDebug() << "WebSocket connected";
    m_webSocket.sendTextMessage("start");

    i_ = 0.0;

    timer_.setInterval(50);
    timer2_.setInterval(10);
    double i=0.0;
    connect(&timer_, &QTimer::timeout, [&](){
        sendMsg("sin");
    });
    connect(&timer2_, &QTimer::timeout, [&](){
        sendMsg("cos");
    });

    timer_.start();
    timer2_.start();
}

void Client::sendMsg(const QString &key){
    using namespace std::chrono;
    static std::chrono::high_resolution_clock::time_point initial_time = high_resolution_clock::now();

    double steps = 1000.0;
    i_ +=M_PI/steps;    

     double value = qSin(i_);
     if(key=="cos")
         value = qCos(i_);
     auto now =  high_resolution_clock::now();
     const double t = duration_cast< duration<double>>( now - initial_time ).count() ;
     QString str = key+QString(":")
             + QString::number(t)+":"
             + QString::number(value);
     qDebug() << str;
     m_webSocket.sendTextMessage(str);
}

void Client::onTextMessageReceived(QString message)
{
    if (m_debug)
        qDebug() << "Message received:" << message;
    m_webSocket.close();
}