QT Socket编程--TCP Server

最新推荐文章于 2025-05-19 23:36:27 发布

原创最新推荐文章于 2025-05-19 23:36:27 发布 · 4.3k 阅读

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#socket #qt #编程 #signal #network #server

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本文详细介绍了如何在QT中创建TCP服务器，实现客户端连接，并通过读取socket读取数据的方法，包括初始化socket、监听、连接客户端、接收数据及断开连接的流程。

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1、在*.pro文件中添加：
QT += network

2、在代码中添加：

    QTcpServer *m_pTcpServer;   //server tcp socket
    QTcpSocket *m_pConnectSocket;      //client connect socket
    
    //初始化Socket
    m_pTcpServer = new QTcpServer(this);
    if (!m_pTcpServer->listen(QHostAddress::Any, port))
    {
	//listen fail
	qDebug()<<m_pTcpServer->errorString();
	QMessageBox::information(this, tr("Listen Fail"), m_pTcpServer->errorString());
    }

    connect(m_pTcpServer, SIGNAL(newConnection()), this, SLOT(slotConnectClient()));

//收到客户端连接
void FormSocketSrv::slotConnectClient()
{
    m_pConnectSocket = m_pTcpServer->nextPendingConnection();
    connect(m_pConnectSocket, SIGNAL(readyRead()), this, SLOT(slotReadTcpData()));
    connect(m_pConnectSocket, SIGNAL(disconnected()),
            m_pConnectSocket, SLOT(deleteLater()));
    connect(m_pConnectSocket, SIGNAL(disconnected()),
            this, SLOT(slotDisconnected()));
}

//接收数据
void FormSocketSrv::slotReadTcpData()
{
    QByteArray byteArray;

    byteArray = m_pConnectSocket->readAll();
    //处理数据
    processPakcet(byteArray);
}

//断开连接
void FormSocketSrv::slotDisconnected()
{
}