QT- QTCPSOCKET with SIGNAL/SLOT

main.cpp

#include < QCoreApplication>

#include < sockettest.h>

int main(int argc, char *argv[])

{

    QCoreApplication a(argc, argv);

    SocketTest mTest;

    mTest.Test();

    return a.exec();

}

----------------------------------------------

socketTest.h

#ifndef SOCKETTEST_H
#define SOCKETTEST_H
#include < QObject>
#include< QDebug >
#include< QTcpSocket >
#include< QAbstractSocket >
class SocketTest : public QObject
{
    Q_OBJECT
public:
    explicit SocketTest(QObject *parent = 0);
    void Test();
signals:
public slots:
    void  connected();
    void  disconnected();
    void bytesWritten(qint64 bytes);
    void readyRead();
private:
    QTcpSocket *socket;
};
#endif // SOCKETTEST_H

--------------------------------------------------

socketTest.cpp

#include "sockettest.h "
SocketTest::SocketTest(QObject *parent) : QObject(parent)
{
}
void SocketTest::Test()
{
    socket = new QTcpSocket(this);
    connect(socket,SIGNAL(connected()),this,SLOT(connected()));
    connect(socket,SIGNAL(disconnected()),this,SLOT(disconnected()));
    connect(socket,SIGNAL(readyRead()),this,SLOT(readyRead()));
    connect(socket,SIGNAL(bytesWritten(qint64)),this,SLOT(bytesWritten(qint64)));
    qDebug()< <" Connecting .........";
    socket->connectToHost("google.com",80);
    if(!socket->waitForConnected(1000))
    {
        qDebug()< <" Error ......... "<< socket->errorString();
    }
}
void  SocketTest::connected()
{
        qDebug()< <" Connected ......... ";
        qDebug() < < socket->write("HEAD / HTTP/1.0 \r\n\r\n");
}
void  SocketTest::disconnected()
{
    qDebug()< <" Disconnected ......... ";
}

void SocketTest::bytesWritten(qint64 bytes)
{
    qDebug() < < " We Wrote :" << bytes;
}

void SocketTest::readyRead()
{
    qDebug()< < "Reading ...   ";
    qDebug()< < socket->readAll();
}