Multithread server doesn't work - c++

Question

I am writing simple client server program in Qt that server is multi thread.
For one server it work correctly and it can send message from client to server but in multi thread form it doesn't work, it connect to thread and also show the message "client connected" but it can't show message sent from client!
I searched a lot bud I couldn't find what is the problem and any solution for it.. Here is my code:
Could you please help me. Thanks in advance.
myserver.cpp
#include "myserver.h"
#include "mythread.h"
myserver::myserver(QObject * parent): QTcpServer(parent)
{
}
void myserver::startserver()
{
int port = 6666;
if (!this - > listen(QHostAddress::Any, port)) {
qDebug() << "Could not start server ";
} else {
qDebug() << "Listening to port ";
}
}
void myserver::incomingConnection(qintptr socketDescriptor)
{
qDebug() << socketDescriptor << " Connecting...";
mythread * thread = new mythread(socketDescriptor, this);
connect(thread, SIGNAL(finished()), thread, SLOT(deleteLater()));
thread - > start();
}
mythread.cpp
#include "mythread.h"
#include "myserver.h"
mythread::mythread(qintptr ID, QObject *parent) : QThread(parent)
{
this->socketDescriptor = ID;
}
void mythread::run()
{
qDebug() << " Thread started";
socket = new QTcpSocket();
if(!socket->setSocketDescriptor(this->socketDescriptor)) {
emit error(socket->error());
return;
}
connect(socket, SIGNAL(readyRead()), this, SLOT(readSocket()));
qDebug() << socketDescriptor << " Client connected";
}
void mythread::readSocket()
{
QByteArray Data = socket->readAll();
qDebug()<< socketDescriptor <<" Data in: " << Data;
socket->write(Data);
}

Answer 1

If you read the documentation for the QThread::run function you will see
Returning from this method will end the execution of the thread.
You need to call the QThread::exec function to enter the thread event loop.