用c++qt 帮我写一个连接到同一个服务端的两个客户端直接的文件传输通过服务端转发写详细点-QT开发中文网

当使用Qt进行文件传输时，可以通过服务端转发来实现连接到同一个服务端的两个客户端之间的文件传输。以下是一个基本的示例代码：

服务端（Server）：

// server.h
#ifndef SERVER_H
#define SERVER_H

#include <QObject>
#include <QTcpServer>
#include <QTcpSocket>

class Server : public QObject
{
    Q_OBJECT
    
public:
    explicit Server(QObject *parent = nullptr);
    
signals:
    void newConnectionReceived(QTcpSocket *socket);
    
private slots:
    void onNewConnection();
    void onReadyRead();
};

#endif // SERVER_H


// server.cpp
#include "server.h"

Server::Server(QObject *parent) : QObject(parent)
{
    QTcpServer *tcpServer = new QTcpServer(this);
    tcpServer->listen(QHostAddress::Any, 12345); // 监听指定端口
    
    connect(tcpServer, &QTcpServer::newConnection, this, &Server::onNewConnection);
}

void Server::onNewConnection()
{
    QTcpSocket *clientSocket = tcpServer->nextPendingConnection(); // 接受新的连接
    
    emit newConnectionReceived(clientSocket);
}

void Server::onReadyRead()
{
   QTcpSocket* clientSocket = qobject_cast<QTcpSocket*>(sender());
   
   // 处理接收到的数据，例如将数据转发给其他客户端
}

客户端1（Client1）：

// client1.h
#ifndef CLIENT1_H
#define CLIENT1_H

#include <QObject>
#include <QTcpSocket>

class Client1 : public QObject
{
    Q_OBJECT
    
public:
    explicit Client1(QObject *parent = nullptr);
    
private slots:
    void onConnected();
    void onReadyRead();
};

#endif // CLIENT1_H


// client1.cpp
#include "client1.h"

Client1::Client1(QObject *parent) : QObject(parent)
{
    QTcpSocket socket;
    
    connect(&socket, &QTcpSocket::connected, this, &Client1::onConnected);
    connect(&socket, &QTcpSocket::readyRead, this, &Client1::onReadyRead);
    
    socket.connectToHost("192.168.0.100", 12345); // 连接到服务端
}

void Client1::onConnected()
{
   QTcpSocket* socket = qobject_cast<QTcpSocket*>(sender());
   
   // 连接成功，发送文件数据...
}

void Client1::onReadyRead()
{
   QTcpSocket* socket = qobject_cast<QTcpSocket*>(sender());
   
   // 处理接收到的数据...
}

客户端2（Client2）：

// client2.h
#ifndef CLIENT2_H
#define CLIENT2_H

#include <QObject>
#include <QTcpSocket>

class Client2 : public QObject
{
    Q_OBJECT
    
public:
    explicit Client2(QObject *parent = nullptr);
    
private slots:
    void onConnected();
    void onReadyRead();
};

#endif // CLIENT2_H


// client2.cpp
#include "client2.h"

Client2::Client2(QObject *parent) : QObject(parent)
{
    QTcpSocket socket;
    
    connect(&socket, &QTcpSocket::connected, this, &Client2::onConnected);
    connect(&socket, &QTcpSocket::readyRead, this, &Client2::onReadyRead);
    
    socket.connectToHost("192.168.0.100", 12345); // 连接到服务端
}

void Client2::onConnected()
{
   QTcpSocket* socket = qobject_cast<QTcpSocket*>(sender());
   
   // 连接成功，接收文件数据...
}

void Client2::onReadyRead()
{
   QTcpSocket* socket = qobject_cast<QTcpSocket*>(sender());
   
   // 处理接收到的数据...
}

请注意，这只是一个简单的示例，仅提供了基本的框架。实际应用中需要根据具体需求进行适当的修改和扩展。例如，在客户端之间传输文件时，可以将文件分成小块进行传输，并使用校验和进行数据完整性验证。此外，还需要处理错误、断开连接等情况，以确保传输的可靠性和稳定性。

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