QTCP Failed to send data

spomm

The data sending failed, and the data I wanted to send was received by socket->readAll(), and this socket->readAll() received it repeatedly many times.
it its my class

jsulm

@spomm Please post code as text, not pictures.
We do not know where and how often you call sendData, so hard to say what is happening.

spomm

@jsulm sorry,I removed the wait function yesterday, eliminating the recurring time delay caused by multiple calls, but the data is still not being sent successfully. Here is my code:```
Constructor
`SocketConnection::SocketConnection(QWidget *parent)
: QMainWindow(parent)
{

server = new QTcpServer(this);

connect(server, &QTcpServer::newConnection, this, &SocketConnection::newConnection);
if (!server->listen(QHostAddress::Any, 6789)) {
    LOGE << "Error: Unable to start the server:" << server->errorString();
    return;
}
LOGI << "Server started";

socket = new QTcpSocket(this); 
socket->setSocketOption(QAbstractSocket::LowDelayOption, 1);
socket->setSocketOption(QAbstractSocket::ReceiveBufferSizeSocketOption, 64 * 1024);
socket->setSocketOption(QAbstractSocket::SendBufferSizeSocketOption, 64 * 1024);

}``

senddata
`void SocketConnection::sendData(const QByteArray &data)
{
    if (socket->state() == QTcpSocket::ConnectedState) {
        int bytesWritten = socket->write(data);
        bool isflush=socket->flush();
        LOGI << "send data111: " << bytesWritten;
        LOGI << "isflush: " << isflush;

    } else
    {
        LOGI << "Socket not connected, attempting to connect...";
        socket->abort();
        socket->deleteLater();
        QTcpSocket *newsocket = new QTcpSocket();
        newsocket->connectToHost("127.0.0.1", 6789);
        LOGI << "Reconnected successfully.";

        QThread::msleep(400);

       if (newsocket->state() == QTcpSocket::ConnectedState)
       {
         int bytesWritten = newsocket->write(data);
          bool isflush=socket->flush();
          LOGI << "2isflush: " << isflush;
         LOGI << "22222send data after reconnect: " << bytesWritten;
       }
    }

}``

call senddata
`void SocketConnection::PendingSendtwo()
{

QString hexString = ""; 

.....
.....
.....
.....


QByteArray dataToSend = hexString.toUtf8();


sendData(dataToSend);

}`

spomm

The original MInGw compiler has not found this problem, because of code reasons to change to the MSVC compiler, this problem occurs frequently.This problem is not frequent.