How to send data from client to server QT TCP/IP

[ELIF]

I have two QT Widget project,Client and HelloWorldServer.My aim
1.Start server
2.Constitute a message part in client side then send this message client to server ui text element.

In client mainwindow.cpp I have

void MainWindow::on_pushButton_clicked()//CONNECT TO SERVER(host)
{
   m_clientSocket->connectToHost(ui->textEditIpAdrress->toPlainText(),quint16(ui->textEditPortAdrres->toPlainText().toInt()));
   
 if (m_clientSocket->waitForConnected(1000))
    qDebug("Connected!");
    connect(m_clientSocket,SIGNAL(error(QAbstractSocket::SocketError)),this,SLOT(displayError(QAbstractSocket::SocketError)));
}

void MainWindow::displayError(QAbstractSocket::SocketError socketError){

switch(socketError){
case QAbstractSocket::RemoteHostClosedError:
    QMessageBox::information(this,tr("connection was refused"),tr("RemoteHostClosedError"));
    break;
case QAbstractSocket::HostNotFoundError:
    QMessageBox::information(this,tr("connection was refused"),tr("HostNotFoundError"));
    break;
case QAbstractSocket::ConnectionRefusedError:
    QMessageBox::information(this,tr("Fortune Client"),tr("ConnectionRefusedError"));
    break;and

default:
    QMessageBox::information(this,tr("Fortune Client"), tr("the following error occured %1.").arg(m_clientSocket->errorString()));

  }
  }

void MainWindow::on_pushButton_2_clicked()//send data via socket to host
{
    QString message=ui->textEditMessageAdres->toPlainText().trimmed();
    if(!message.isEmpty()){
        m_clientSocket->write(QString(message + "\n").toUtf8());
        qDebug() <<message;
    }
  ui->textEditMessageAdres->clear();
  ui->textEditMessageAdres->setFocus();
}

In server helloworldserver.cpp I have

HelloworldServer::HelloworldServer(Server *pHelloServer,QObject *parent):QTcpServer(parent)
{
      m_pHelloWindow = pHelloServer;
}


void HelloworldServer::incomingConnection(int socketfd){
 QTcpSocket *client=new QTcpSocket(this);
 client->setSocketDescriptor(socketfd);
 clients.insert(client);
 m_pHelloWindow->addMessage("New client from: " + client- 
 >peerAddress().toString());
 connect(client,SIGNAL(readyRead()),this,SLOT(readyRead()));
 connect(client,SIGNAL(disconnected()),this,SLOT(disconnected()));
}

void HelloworldServer::readyRead(){ //I want to get the message from client 
    QTcpSocket *client= (QTcpSocket*) sender();
    
    while(client->canReadLine()){
     
        QString line = QString::fromUtf8(client->readLine()).trimmed();
        m_pHelloWindow->addMessage(line);
        qDebug() << "  " << line;
        qDebug() << client->readAll();
    }
}
void HelloworldServer::disconnected(){
    QTcpSocket  *client= (QTcpSocket*) sender();
    qDebug()<<"Client disconnected :"<< client->peerAddress().toString();
    clients.remove(client);
}

When I click the Connect there is no connect message on console.

When I click send button I want to see it on server side (on status message) but there is no message on server side.

How to solve this issue?Any helps will be appreciated! Thanks.

[jsulm]

@ELIF From the code you posted it is not clear whether your server is listening for incoming connections at all.
Is your HelloworldServer a subclass of QTcpServer?

[ELIF]

@jsulm said in How to send data from client to server QT TCP/IP:

HelloworldServer a subclass of QTcpServer?

yes HelloworldServer is a subclass of QTcpServer? We can see it below

HelloworldServer::HelloworldServer(Server *pHelloServer,QObject *parent): QTcpServer(parent)

[ELIF]

@jsulm said in How to send data from client to server QT TCP/IP:

your server is listening for incoming connections at all.

[jsulm]

@ELIF Then the signature here is wrong: void incomingConnection(int socketfd)
Correct one is void incomingConnection(qintptr socketDescriptor)
int != qintptr.
You should add "override" keyword after incomingConnection declaration, so the compiler can check whether you're really overriding this method.