获取远程主机IP地址和端口QUdpSocket

Question

我使用QUdpSocket创建UDP服务器。当客户端连接到它时，我想知道客户端的IP地址和端口号。我该怎么办？

Answer 1

在服务器端，您可以看到数据来自的地址：

readDatagram(char * data, qint64 maxSize, QHostAddress * address = 0, quint16 * port = 0)

获取readyRead（）信号时读取数据。

Answer 2

QHostAddress sender;
quint16 senderPort;

socket->readDatagram(buffer.data(), buffer.size(), &sender, &senderPort);

QString received = QString(buffer);

qDebug() << "Message received on IP:" << socket->localAddress().toString() << "Port:" << socket->localPort();
qDebug() << "Message from:" << sender.toString();
qDebug() << "Message Port:" << senderPort;
qDebug() << "Message:" << received;

这是获取发件人地址的正确方法。