//Please reproduce under macOS, there are no issues with Windows
void chatSocket::init()
{
	QHostInfo::lookupHost("www.yourweb.com", this, SLOT(initSocket(QHostInfo)));
}

void chatSocket::initSocket(const QHostInfo &host)
{
	if (host.error() != QHostInfo::NoError) {
		return;
	}

	//只取第一个
	m_hostAddr = host.addresses()[0];

	m_udpSocket = new QUdpSocket(this);
	connect(m_udpSocket, SIGNAL(readyRead()), this, SLOT(readPendingDatagrams()));

	//初始化完成
	emit winMsg(MSG_INIT_FINISH, QStringLiteral("网络ok"));
}
 
bool chatSocket::SendData(char *text, int len)
{
	if (m_udpSocket != nullptr)
	{
		m_udpSocket->writeDatagram(text, len,m_hostAddr, 6060);
		return true;
	}
	return false;
}

void chatSocket::readPendingDatagrams()
{
	while ((m_udpSocket!=nullptr) && m_udpSocket->hasPendingDatagrams())
	{
		//Returns the size of the first pending UDP datagram. If there is no datagram available, this function returns -1.
		int len = m_udpSocket->pendingDatagramSize();
		if (len < 0)
		{
			break;
		}

		char * data = new char[len+1];
		data[len] = '\0';
		int msglen = m_udpSocket->readDatagram(data,len);
	
		if (msglen <= 0)
		{
	
			delete[]data;
		}
		else
		{
            // do other work
		}
	}
}