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简单实现控制TCP服务器获取连接的套接字。点击断开服务器即可关闭所有连接#xff0c;最大连接数量为5个。
声明源文件
#include mainwindow.hMainWindow::MainWindow(QWidget *parent): QMainWindow(parent)
{//设置固定大小setFixedSize(1024,600);b…1、简介
简单实现控制TCP服务器获取连接的套接字。点击断开服务器即可关闭所有连接最大连接数量为5个。
声明源文件
#include mainwindow.hMainWindow::MainWindow(QWidget *parent): QMainWindow(parent)
{//设置固定大小setFixedSize(1024,600);btnClearText new QPushButton(this);btnCtrlServer new QPushButton(this);textRecvBrowser new QTextBrowser(this);//按键清空btnClearText-setGeometry(48,40,200,60);btnClearText-setText(清空浏览);//设置控制按钮btnCtrlServer-setGeometry(48, 404030 , 200, 60);btnCtrlServer-setText(打开服务);//浏览处理textRecvBrowser-setGeometry(300, 40, 649, 500);//连接处理QObject::connect(btnClearText, SIGNAL(clicked()), this, SLOT(on_pushButton_textRecvBrowser()));QObject::connect(btnCtrlServer, SIGNAL(clicked()),this, SLOT(on_pushButton_ctrlTcpServer()));//TCP服务器处理tcpServer new QTcpServer(this);QObject::connect(tcpServer, SIGNAL(newConnection()),this, SLOT(on_tcpServer_newConnectCallHandler()));//最大连接数量5个tcpServer-setMaxPendingConnections(5);tcpServer-listen(QHostAddress(127.0.0.1), 80);if(tcpServer-isListening())btnCtrlServer-setText(关闭服务);elsebtnCtrlServer-setText(打开服务);}MainWindow::~MainWindow()
{delete btnClearText;delete btnCtrlServer;delete textRecvBrowser;delete tcpServer;
}//清空浏览记录
void MainWindow::on_pushButton_textRecvBrowser()
{textRecvBrowser-clear();
}//
void MainWindow::on_pushButton_ctrlTcpServer()
{//状态查询if(tcpServer-isListening()){//遍历所有数据foreach(QTcpSocket* tcpSocket, tcpSocketList){if(tcpSocket-state() QAbstractSocket::ConnectedState)tcpSocket-close();//关闭连接}//tcpServer-close();}elsetcpServer-listen(QHostAddress::Any, 80);//监听状态if(tcpServer-isListening())btnCtrlServer-setText(关闭服务);elsebtnCtrlServer-setText(打开服务);
}//IPv6转换IPv4
QString convert_to_ipv4_addr(QHostAddress addr)
{quint32 addr_origin addr.toIPv4Address();QHostAddress addr_host QHostAddress(addr_origin);QString addr_str addr_host.toString();return addr_str;
}//新建连接
void MainWindow::on_tcpServer_newConnectCallHandler()
{while (tcpServer-hasPendingConnections()) {//获取连接QTcpSocket *tcpSocket tcpServer-nextPendingConnection();//添加指针列表tcpSocketList.append(tcpSocket);//显示具体连接信息QHostAddress ipv6 tcpSocket-peerAddress();textRecvBrowser-append(convert_to_ipv4_addr(ipv6) : QString::number(tcpSocket-peerPort()));//设置连接QObject::connect(tcpSocket, SIGNAL(readyRead()),this, SLOT(on_tcpSocket_readyRead()));QObject::connect(tcpSocket, SIGNAL(disconnected()), this, SLOT(on_tcpSocket_disconnected()));//qDebug() 当前连接数量 tcpSocketList.size();}}void MainWindow::on_tcpSocket_disconnected()
{QTcpSocket* socket qobject_castQTcpSocket *(sender()); //当前信息//断开所有连接if(socket-state() QAbstractSocket::ConnectedState)socket-close();//关闭连接//断开连接则清除tcpSocketList.removeOne(socket);textRecvBrowser-append(已断开连接);qDebug() 当前连接数量 tcpSocketList.size();
}//
void MainWindow::on_tcpSocket_readyRead()
{QTcpSocket* socket qobject_castQTcpSocket *(sender()); // 取得当前socket对象socket-write(Hello,5);
// QMessageBox msgBox(this);// msgBox.setText(我是准备好读数据);
// msgBox.setWindowTitle(提示);
// msgBox.exec();
}
声明的头文件
#ifndef MAINWINDOW_H
#define MAINWINDOW_H#include QMainWindow
#include QPushButton
#include QTextBrowser
#include QTcpServer
#include QTcpSocket
#include QHostAddress
#include QMessageBox
#include QDebugclass MainWindow : public QMainWindow
{Q_OBJECTpublic:MainWindow(QWidget *parent nullptr);~MainWindow();private slots:void on_pushButton_textRecvBrowser();void on_pushButton_ctrlTcpServer();void on_tcpServer_newConnectCallHandler();void on_tcpSocket_readyRead();void on_tcpSocket_disconnected();
private:QListQTcpSocket * tcpSocketList;QPushButton *btnCtrlServer nullptr;QPushButton *btnClearText nullptr;QTextBrowser *textRecvBrowser nullptr;QTcpServer *tcpServer nullptr;
};
#endif // MAINWINDOW_H
