用C++的QT写一个能够实现TCP和UDP通信的网络调试助手代码_c++写一个tcp ip调试程序

以下是一个简单的示例代码：

#include <QTcpSocket>
#include <QUdpSocket>
​
class NetworkHelper : public QObject {
    Q_OBJECT
​
public:
    NetworkHelper(QObject* parent = nullptr) : QObject(parent) {}
​
public slots:
    void tcpConnect(QString host, int port) {
        tcpSocket = new QTcpSocket(this);
        connect(tcpSocket, SIGNAL(connected()), this, SLOT(onConnected()));
        connect(tcpSocket, SIGNAL(readyRead()), this, SLOT(onTcpReadyRead()));
​
        tcpSocket->connectToHost(host, port);
    }
​
    void udpBind(int port) {
        udpSocket = new QUdpSocket(this);
        connect(udpSocket, SIGNAL(readyRead()), this, SLOT(onUdpReadyRead()));
​
        if (udpSocket->bind(QHostAddress::Any, port)) {
            qDebug() << "UDP socket bound to port " << port;
        } else {
            qWarning() << "Failed to bind UDP socket to port " << port << ": " << udpSocket->errorString();
        }
    }
​
    void sendTcp(QString message) {
        if (tcpSocket) {
            tcpSocket->write(message.toUtf8());
        }
    }
​
    void sendUdp(QString message, QString host, int port) {
        if (udpSocket) {
            udpSocket->writeDatagram(message.toUtf8(), QHostAddress(host), port);
        }
    }
​
signals:
    void connected();
    void tcpMessageReceived(QString message);
    void udpMessageReceived(QString message, QString host, int port);
​
private slots:
    void onConnected() {
        qDebug() << "Connected to TCP server";
        emit connected();
    }
​
    void onTcpReadyRead() {
        while (tcpSocket->canReadLine()) {
            QString message = QString::fromUtf8(tcpSocket->readLine()).trimmed();
            qDebug() << "TCP message received: " << message;
            emit tcpMessageReceived(message);
        }
    }
​
    void onUdpReadyRead() {
        while (udpSocket->hasPendingDatagrams()) {
            QByteArray datagram;
            datagram.resize(udpSocket->pendingDatagramSize());
            QHostAddress sender;
            quint16 senderPort;
​
            udpSocket->readDatagram(datagram.data(), datagram.size(), &sender, &senderPort);
​
            QString message = QString::fromUtf8(datagram).trimmed();
            qDebug() << "UDP message received from " << sender.toString() << ":" << senderPort << ": " << message;
            emit udpMessageReceived(message, sender.toString(), senderPort);
        }
    }
​
private:
    QTcpSocket* tcpSocket = nullptr;
    QUdpSocket* udpSocket = nullptr;
};

使用该类可以完成以下操作：

• 通过tcpConnect(QString host, int port)函数建立与TCP服务器的连接；

• 通过udpBind(int port)函数绑定UDP端口；

• 通过sendTcp(QString message)函数向TCP服务器发送消息；

• 通过sendUdp(QString message, QString host, int port)函数向指定主机和端口发送UDP消息；

• 监听TCP和UDP通信并在收到消息时发出相应的信号：connected()（TCP连接成功）、tcpMessageReceived(QString message)（收到TCP消息）、udpMessageReceived(QString message, QString host, int port)（收到UDP消息）。

示例代码只是一个简单的实现，可能存在一些不足之处，具体实现还需要根据项目需求进行完善。

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