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void ReciveWorker::readPendingDatagrams()
{
qDebug() << "ReciveWorker thread id:" << QThread::currentThreadId();
QByteArray by = Conn->socket()->readAll();
qDebug() << "ReciveWorker recive data:" << by;
Conn->socket()->write(by);
}
QByteArray data ="XXXX";
emit sendData(data);
就行了