自己做网站有什么用,修改wordpress栏目标题,扁平图标网站,用什么软件建网站最方便有些小伙伴对怎么对Udp的数据打包不太清楚。下面我举例说明。
比如我们要发送一个Person的数据。可以先用一个结构把Person的数据封装。
struct Person {QString name;int age;
};下面是udp客户端和服务器端完整的代码例子。 #ifndef UDPCLIENT_H
#define UDPCLIENT_H#includ…有些小伙伴对怎么对Udp的数据打包不太清楚。下面我举例说明。
比如我们要发送一个Person的数据。可以先用一个结构把Person的数据封装。
struct Person {QString name;int age;
};下面是udp客户端和服务器端完整的代码例子。 #ifndef UDPCLIENT_H
#define UDPCLIENT_H#include QObject
#include QUdpSocketstruct Person {QString name;int age;
};class UdpClient : public QObject
{Q_OBJECT
public:explicit UdpClient(QObject *parent nullptr);void sendDatagram(const QByteArray data);private slots:void readPendingDatagrams();private:void processDatagram(const QNetworkDatagram datagram);QUdpSocket *udpSocket;
};#endif // UDPCLIENT_H#include UdpClient.h
#include QDataStream
#include QNetworkDatagramUdpClient::UdpClient(QObject *parent) : QObject(parent) {udpSocket new QUdpSocket(this);udpSocket-bind(QHostAddress::LocalHost, 1235);connect(udpSocket, QUdpSocket::readyRead, this, UdpClient::readPendingDatagrams);
}void UdpClient::sendDatagram(const QByteArray data) {udpSocket-writeDatagram(data, QHostAddress::LocalHost, 1234);
}void UdpClient::readPendingDatagrams() {while (udpSocket-hasPendingDatagrams()) {QNetworkDatagram datagram udpSocket-receiveDatagram();processDatagram(datagram);}
}void UdpClient::processDatagram(const QNetworkDatagram datagram) {QByteArray data datagram.data();// Here you would process the dataQDataStream stream(data);Person person;stream person.name person.age;// 现在你可以使用 person 结构中的数据qDebug() Received person: person.name , person.age;
}#ifndef UDPSERVER_H
#define UDPSERVER_H#include QObject
#include QUdpSocketclass UdpServer : public QObject
{Q_OBJECT
public:explicit UdpServer(QObject *parent nullptr);private slots:void readPendingDatagrams();private:void processDatagram(const QNetworkDatagram datagram);QUdpSocket *udpSocket;
};#endif // UDPSERVER_H#include UdpServer.h#include QNetworkDatagramUdpServer::UdpServer(QObject *parent) : QObject(parent) {udpSocket new QUdpSocket(this);udpSocket-bind(QHostAddress::LocalHost, 1234);connect(udpSocket, QUdpSocket::readyRead, this, UdpServer::readPendingDatagrams);
}void UdpServer::readPendingDatagrams() {while (udpSocket-hasPendingDatagrams()) {QNetworkDatagram datagram udpSocket-receiveDatagram();processDatagram(datagram);}
}void UdpServer::processDatagram(const QNetworkDatagram datagram) {QByteArray data datagram.data();// Here you would process the data// ...//qDebug() Received data from client: data.toStdString().c_str();// Sending a response back to the senderudpSocket-writeDatagram(data, datagram.senderAddress(), datagram.senderPort());
}#include QCoreApplication
#include QDataStream
#include UdpServer.h
#include UdpClient.hint main(int argc, char *argv[])
{QCoreApplication a(argc, argv);UdpServer server;UdpClient client;Person person;person.name Alice;person.age 30;QByteArray datagram;QDataStream stream(datagram, QIODevice::WriteOnly);stream person.name person.age;client.sendDatagram(datagram);return a.exec();
}
