最新国产好看的视频,伊人天堂AV在线,国产Aaaaaa视频,蜜臀视频在线观看一区,人妻av色图,密臀久久久精品影片,青青视频免费观看毛片,久草在线观看视,国产三级精品色情在线

QT實現(xiàn)TCP客戶端自動連接

 更新時間：2024年12月30日 09:19:26   作者：千冊  
這篇文章主要為大家詳細(xì)介紹了QT中一個TCP客戶端自動連接的測試模型,文中的示例代碼講解詳細(xì),感興趣的小伙伴可以跟隨小編一起學(xué)習(xí)一下

版本 1:沒有取消按鈕

 測試效果

缺陷：

無法手動停止

測試代碼

CMakeLists.txt

cmake_minimum_required(VERSION 3.19)
project(AutoConnect LANGUAGES CXX)
 
find_package(Qt6 6.5 REQUIRED COMPONENTS Core Widgets Network)
 
qt_standard_project_setup()
 
qt_add_executable(AutoConnect
    WIN32 MACOSX_BUNDLE
    main.cpp
 
    widget.h
    widget.ui
)
 
target_link_libraries(AutoConnect
    PRIVATE
        Qt::Core
        Qt::Widgets
        Qt6::Network
)
 
include(GNUInstallDirs)
 
install(TARGETS AutoConnect
    BUNDLE  DESTINATION .
    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
)
 
qt_generate_deploy_app_script(
    TARGET AutoConnect
    OUTPUT_SCRIPT deploy_script
    NO_UNSUPPORTED_PLATFORM_ERROR
)
install(SCRIPT ${deploy_script})

main.cpp 

#include "widget.h"
 
#include <QApplication>
 
int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    Widget w;
    w.show();
    return a.exec();
}

widget.h

#ifndef WIDGET_H
#define WIDGET_H
 
#include <QWidget>
#include <QTcpSocket>
#include <QProgressDialog>
#include <QPushButton>
#include <QLabel>
#include <QHBoxLayout>
#include <QVBoxLayout>
#include <QTextBrowser>
#include <QMouseEvent>
#include <QLineEdit>
#include <QDebug>
#include <QMetaObject>
#include <QProgressBar>
#include <QTimer>
 
class MyTextBrowser:public QTextBrowser
{
public:
    MyTextBrowser(QWidget *parent = nullptr)
        :QTextBrowser(parent)
    {
 
    }
 
    // QWidget interface
protected:
    virtual void mouseDoubleClickEvent(QMouseEvent *event) override{
        if(event->button() == Qt::LeftButton){
            this->clear();
        }
    }
};
 
class Widget : public QWidget
{
    Q_OBJECT
 
public:
    Widget(QWidget *parent = nullptr)
        : QWidget(parent)
    {
        QVBoxLayout *root = new QVBoxLayout(this);
        QHBoxLayout *iplayout = new QHBoxLayout;
        QPushButton *button_connect = new QPushButton("connect",this);
        button_connect->setObjectName("connect");
        QLabel *ip_label = new QLabel("ip",this);
        QLabel *port_label = new QLabel("port",this);
 
        iplayout->addWidget(ip_label);
        iplayout->addWidget(ip_LineEdit);
        iplayout->addWidget(port_label);
        iplayout->addWidget(port_LineEdit);
        iplayout->addWidget(button_connect);
        iplayout->addStretch();
 
        root->addLayout(iplayout);
        root->addWidget(console,1);
 
        //設(shè)置默認(rèn)的測試網(wǎng)絡(luò)參數(shù)
        ip_LineEdit->setText("127.0.0.1");
        port_LineEdit->setText("6600");
 
        client->setObjectName("client");
 
        QMetaObject::connectSlotsByName(this);
    }
    ~Widget()
    {
    }
public slots:
    void auto_connect(){
        if(client->state() == QAbstractSocket::ConnectedState){
            client->disconnectFromHost();
            client->waitForDisconnected();
        }
 
        //client->waitForConnected();
        std::shared_ptr<QProgressDialog> dialog(new QProgressDialog(this));
        dialog->setLabelText("");
        QProgressBar *bar = new QProgressBar(dialog.get());
        bar->setTextVisible(false);
        dialog->setBar(bar);
        dialog->setLabelText("connecting ... ");
        dialog->setRange(0,0);
        dialog->setCancelButton(nullptr);
        dialog->setWindowFlag(Qt::FramelessWindowHint);
        QMetaObject::Connection conn_accept
            = connect(client,
                      &QTcpSocket::connected,
                      dialog.get(),
                      &QProgressDialog::accept);
        QMetaObject::Connection conn_rejected
            = connect(client,
                      &QTcpSocket::stateChanged,
                      dialog.get(),[this,dialog](){
                          if(this->client->state() ==
                              QAbstractSocket::UnconnectedState){
                              dialog->reject();
                          }
                      });
        bool rtn = false;
        if(conn_accept&&conn_accept){
            QHostAddress ip(ip_LineEdit->text());
            int port = port_LineEdit->text().toInt();
            show_msg(QString("connect %1:%2 ...").arg(ip.toString()).arg(port));
            client->connectToHost(ip,port);
            rtn = dialog->exec();
            qDebug() << "rtn = " << rtn;
            if(rtn == true){
                show_msg(QString("connect %1:%2 success").arg(ip.toString()).arg(port));
            }else{
                show_msg(QString("connect %1:%2 fail").arg(ip.toString()).arg(port));
            }
        }else{
            qDebug() << "error";
        }
 
        if(conn_accept){
            QObject::disconnect(conn_accept);
        }
        if(conn_rejected){
            QObject::disconnect(conn_rejected);
        }
        if(!rtn){
            QTimer::singleShot(10, this, &Widget::auto_connect);
        }
    }
    void on_connect_clicked(){
        qDebug() << "clicked";
        auto_connect();
    }
    void on_client_connected(){
        QTcpSocket *c = (QTcpSocket *)sender();
        qDebug() << c->peerAddress() << "-" << c->peerName() << "-" << c->peerPort();
 
        show_msg(QString("connect %1:%2 ok").arg(c->peerAddress().toString()).arg(c->peerPort()));
    }
    void on_client_disconnected(){
        qDebug() << __func__<<__LINE__;
        show_msg(QString("disconnected"));
        QTimer::singleShot(10, this, &Widget::auto_connect);
    }
    void on_client_errorOccurred(QAbstractSocket::SocketError socketError){
        qDebug() << __func__<<__LINE__ << "socketError:" << socketError;
    }
    void on_client_hostFound(){
        qDebug() << __func__<<__LINE__;
    }
    // void proxyAuthenticationRequired(const QNetworkProxy &proxy, QAuthenticator *authenticator)
    void on_client_stateChanged(QAbstractSocket::SocketState socketState){
        qDebug() << __func__<<__LINE__<< "socketState:"<<socketState;
    }
    void show_msg(QString msg){
        console->append(msg);
    }
 
    void on_client_aboutToClose(){
        qDebug() << __func__<<__LINE__;
    }
    // void bytesWritten(qint64 bytes)
    // void channelBytesWritten(int channel, qint64 bytes)
    void on_client_channelReadyRead(int channel){
        qDebug() << __func__<<__LINE__<< "channel:"<<channel;
    }
    void on_client_readChannelFinished(){
        qDebug() << __func__<<__LINE__;
    }
    void on_client_readyRead(){
        qDebug() << __func__<<__LINE__;
    }
 
public:
    QTcpSocket *client = new QTcpSocket(this);
    MyTextBrowser *console = new MyTextBrowser;
    QLineEdit *ip_LineEdit = new QLineEdit;
    QLineEdit *port_LineEdit = new QLineEdit;
 
private:
};
#endif // WIDGET_H

版本 2:有取消按鈕

測試效果

點擊canel按鈕后，就不會自動重連了：

測試代碼

CMakeLists.txt

cmake_minimum_required(VERSION 3.19)
project(AutoConnect LANGUAGES CXX)
 
find_package(Qt6 6.5 REQUIRED COMPONENTS Core Widgets Network)
 
qt_standard_project_setup()
 
qt_add_executable(AutoConnect
    WIN32 MACOSX_BUNDLE
    main.cpp
 
    widget.h
    widget.ui
)
 
target_link_libraries(AutoConnect
    PRIVATE
        Qt::Core
        Qt::Widgets
        Qt6::Network
)
 
include(GNUInstallDirs)
 
install(TARGETS AutoConnect
    BUNDLE  DESTINATION .
    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
)
 
qt_generate_deploy_app_script(
    TARGET AutoConnect
    OUTPUT_SCRIPT deploy_script
    NO_UNSUPPORTED_PLATFORM_ERROR
)
install(SCRIPT ${deploy_script})

main.cpp

#include "widget.h"
 
#include <QApplication>
int MyPushButton::count = 0;
int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    Widget w;
    w.show();
    return a.exec();
}

widget.h

#ifndef WIDGET_H
#define WIDGET_H
#include <QApplication>
#include <QWidget>
#include <QTcpSocket>
#include <QProgressDialog>
#include <QPushButton>
#include <QLabel>
#include <QHBoxLayout>
#include <QVBoxLayout>
#include <QTextBrowser>
#include <QMouseEvent>
#include <QLineEdit>
#include <QDebug>
#include <QMetaObject>
#include <QProgressBar>
#include <QTimer>
 
class MyTextBrowser:public QTextBrowser
{
public:
    MyTextBrowser(QWidget *parent = nullptr)
        :QTextBrowser(parent)
    {
 
    }
 
    // QWidget interface
protected:
    virtual void mouseDoubleClickEvent(QMouseEvent *event) override{
        if(event->button() == Qt::LeftButton){
            this->clear();
        }
    }
};
class MyPushButton:public QPushButton{
    Q_OBJECT
public:
 
    MyPushButton(QWidget *parent = nullptr):
        MyPushButton("",parent)
    {
 
    }
    MyPushButton(const QString &text, QWidget *parent = nullptr)
        :QPushButton(text,parent)
    {
        MyPushButton::count++;
        qDebug() << __func__ << __LINE__ << " create MyPushButton:count = "  << count;
 
    }
    ~MyPushButton(){
        MyPushButton::count--;
        qDebug() << __func__ << __LINE__ << " delete MyPushButton:count = " << count;
    }
public:
    static int count;
signals:
    void user_click();
 
 
    // QWidget interface
protected:
    virtual void mousePressEvent(QMouseEvent *event) override{
        if(event->button() == Qt::LeftButton){
            qDebug() << __func__ << __LINE__ << "user click";
            emit user_click();
        }
    }
};
 
 
class Widget : public QWidget
{
    Q_OBJECT
 
public:
    Widget(QWidget *parent = nullptr)
        : QWidget(parent)
    {
        QVBoxLayout *root = new QVBoxLayout(this);
        QHBoxLayout *iplayout = new QHBoxLayout;
        QPushButton *button_connect = new QPushButton("connect",this);
 
        button_connect->setObjectName("connect");
        QLabel *ip_label = new QLabel("ip",this);
        QLabel *port_label = new QLabel("port",this);
 
        iplayout->addWidget(ip_label);
        iplayout->addWidget(ip_LineEdit);
        iplayout->addWidget(port_label);
        iplayout->addWidget(port_LineEdit);
        //iplayout->addWidget(button_connect);
        button_connect->setVisible(false);
        iplayout->addStretch();
 
        root->addLayout(iplayout);
        root->addWidget(console,1);
 
        //設(shè)置默認(rèn)的測試網(wǎng)絡(luò)參數(shù)
        ip_LineEdit->setText("127.0.0.1");
        port_LineEdit->setText("6600");
 
        client->setObjectName("client");
 
        QMetaObject::connectSlotsByName(this);
        QTimer::singleShot(10, this, &Widget::auto_connect);
 
        // std::shared_ptr<QProgressDialog> dialog(new QProgressDialog(this));
        // dialog->setCancelButton(new MyPushButton("hello",this));
        // qDebug() << "wait ...";
        // dialog.reset();
        // qDebug() << "byebye ...";
    }
    ~Widget()
    {
    }
public slots:
    void auto_connect(){
        if(client->state() == QAbstractSocket::ConnectedState){
            client->disconnectFromHost();
            client->waitForDisconnected();
        }
        //client->waitForConnected();
        std::shared_ptr<QProgressDialog> dialog(new QProgressDialog(this));
        dialog->setLabelText("");
        QProgressBar *bar = new QProgressBar(dialog.get());
        bar->setTextVisible(false);
        dialog->setBar(bar);
        dialog->setLabelText("connecting ... ");
        dialog->setRange(0,0);
        MyPushButton *cancel_button = new MyPushButton("cancel",dialog.get());
        dialog->setCancelButton(cancel_button);
        dialog->setWindowFlag(Qt::FramelessWindowHint);
        QMetaObject::Connection conn_accept
            = connect(client,
                      &QTcpSocket::connected,
                      dialog.get(),
                      &QProgressDialog::accept);
        QMetaObject::Connection conn_rejected
            = connect(client,
                      &QTcpSocket::stateChanged,
                      dialog.get(),[this,dialog](){
                          if(this->client->state() ==
                              QAbstractSocket::UnconnectedState){
                              qDebug() << "connect error";
                              dialog->reject();
                          }
                      });
 
        QMetaObject::Connection conn_cancel
            = connect(cancel_button,
                      &MyPushButton::user_click,
                      dialog.get(),[this,dialog](){
                          qDebug() << "connect error";
                          dialog->reject();
                          this->m_user_cancel = true;
                          show_msg("user cancel reconnect");
                      });
 
        bool rtn = false;
        if(conn_accept&&conn_accept&&conn_cancel){
            QHostAddress ip(ip_LineEdit->text());
            int port = port_LineEdit->text().toInt();
            show_msg(QString("connect %1:%2 ...").arg(ip.toString()).arg(port));
            client->connectToHost(ip,port);
            rtn = dialog->exec();
            qDebug() << "rtn = " << rtn;
            if(rtn == true){
                show_msg(QString("connect %1:%2 success").arg(ip.toString()).arg(port));
            }else{
                show_msg(QString("connect %1:%2 fail").arg(ip.toString()).arg(port));
            }
        }else{
            qDebug() << "error";
        }
 
        if(conn_accept){
            QObject::disconnect(conn_accept);
        }
        if(conn_rejected){
            QObject::disconnect(conn_rejected);
        }
        if(conn_rejected){
            QObject::disconnect(conn_rejected);
        }
        if(conn_cancel){
            QObject::disconnect(conn_cancel);
        }
 
        if(!rtn){
            if(this->m_user_cancel == false){
                QTimer::singleShot(10, this, &Widget::auto_connect);
            }
        }
    }
    void on_connect_clicked(){
        qDebug() << "clicked";
        auto_connect();
    }
    void on_client_connected(){
        QTcpSocket *c = (QTcpSocket *)sender();
        qDebug() << c->peerAddress() << "-" << c->peerName() << "-" << c->peerPort();
 
        show_msg(QString("connect %1:%2 ok").arg(c->peerAddress().toString()).arg(c->peerPort()));
    }
    void on_client_disconnected(){
        qDebug() << __func__<<__LINE__;
        show_msg(QString("disconnected"));
        QTimer::singleShot(10, this, &Widget::auto_connect);
    }
    void on_client_errorOccurred(QAbstractSocket::SocketError socketError){
        qDebug() << __func__<<__LINE__ << "socketError:" << socketError;
    }
    void on_client_hostFound(){
        qDebug() << __func__<<__LINE__;
    }
    // void proxyAuthenticationRequired(const QNetworkProxy &proxy, QAuthenticator *authenticator)
    void on_client_stateChanged(QAbstractSocket::SocketState socketState){
        qDebug() << __func__<<__LINE__<< "socketState:"<<socketState;
    }
    void show_msg(QString msg){
        console->append(msg);
    }
 
    void on_client_aboutToClose(){
        qDebug() << __func__<<__LINE__;
    }
    // void bytesWritten(qint64 bytes)
    // void channelBytesWritten(int channel, qint64 bytes)
    void on_client_channelReadyRead(int channel){
        qDebug() << __func__<<__LINE__<< "channel:"<<channel;
    }
    void on_client_readChannelFinished(){
        qDebug() << __func__<<__LINE__;
    }
    void on_client_readyRead(){
        qDebug() << __func__<<__LINE__;
    }
 
public:
    bool m_user_cancel = false;
    QTcpSocket *client = new QTcpSocket(this);
    MyTextBrowser *console = new MyTextBrowser;
    QLineEdit *ip_LineEdit = new QLineEdit;
    QLineEdit *port_LineEdit = new QLineEdit;
 
private:
};
#endif // WIDGET_H

以上就是QT實現(xiàn)TCP客戶端自動連接的詳細(xì)內(nèi)容，更多關(guān)于QT TCP客戶端的資料請關(guān)注腳本之家其它相關(guān)文章！

相關(guān)文章

  • 詳解c++優(yōu)先隊列priority_queue的用法

    詳解c++優(yōu)先隊列priority_queue的用法

    本文詳細(xì)講解了c++優(yōu)先隊列priority_queue的用法，文中通過示例代碼介紹的非常詳細(xì)。對大家的學(xué)習(xí)或工作具有一定的參考借鑒價值，需要的朋友可以參考下
    2021-12-12
  • 使用root權(quán)限運行自己所編譯程序的解決方法

    使用root權(quán)限運行自己所編譯程序的解決方法

    本篇文章介紹了，使用root權(quán)限運行自己所編譯程序的解決方法。需要的朋友參考下
    2013-05-05
  • C++?和?C#?中的?lambda的方法技巧

    C++?和?C#?中的?lambda的方法技巧

    這篇文章主要介紹了C++?和?C#?中的?lambda的方法技巧，文章圍繞主題展開詳細(xì)的內(nèi)容介紹，具有一定的參考價值，感興趣的小伙伴可以參考一下
    2022-06-06
  • OpenCV實現(xiàn)圖像背景虛化效果原理詳解

    OpenCV實現(xiàn)圖像背景虛化效果原理詳解

    相信用過相機(jī)的同學(xué)都知道虛化特效，這是一種使焦點聚集在拍攝主題上，讓背景變得朦朧的效果。本文將詳細(xì)介紹一些這一效果的實現(xiàn)原理以及代碼，需要的可以參考一下
    2022-03-03
  • C/C++編譯報錯printf was not declared in this scope問題及解決

    C/C++編譯報錯printf was not declared in 

    這篇文章主要介紹了C/C++編譯報錯printf was not declared in this scope問題及解決方案,具有很好的參考價值,希望對大家有所幫助,如有錯誤或未考慮完全的地方,望不吝賜教
    2023-08-08
  • C++中的list與forward_list介紹與使用

    C++中的list與forward_list介紹與使用

    本文大家介紹C++中l(wèi)ist和forward_list的底層結(jié)構(gòu)（雙向/單向鏈表）、迭代器失效機(jī)制及與vector的對比,重點分析其插入刪除效率、空間利用率和適用場景,感興趣的朋友跟隨小編一起看看吧
    2025-08-08
  • C語言冒泡排序算法代碼詳解

    C語言冒泡排序算法代碼詳解

    大家好，本篇文章主要講的是C語言冒泡排序算法代碼詳解，感興趣的同學(xué)趕快來看一看吧，對你有幫助的話記得收藏一下
    2022-01-01
  • C語言實現(xiàn)隨機(jī)讀寫文件的函數(shù)詳解

    C語言實現(xiàn)隨機(jī)讀寫文件的函數(shù)詳解

    文件的隨機(jī)讀寫，可以在文件中指定的任意位置讀或者寫。這篇文章主要為大家詳細(xì)介紹了C語言實現(xiàn)隨機(jī)讀寫文件的3個函數(shù)，感興趣的可以了解一下
    2023-03-03
  • C++實現(xiàn)LeetCode(228.總結(jié)區(qū)間)

    C++實現(xiàn)LeetCode(228.總結(jié)區(qū)間)

    這篇文章主要介紹了C++實現(xiàn)LeetCode(228.總結(jié)區(qū)間),本篇文章通過簡要的案例,講解了該項技術(shù)的了解與使用,以下就是詳細(xì)內(nèi)容,需要的朋友可以參考下
    2021-07-07
  • C語言進(jìn)程程序替換的實現(xiàn)詳解

    C語言進(jìn)程程序替換的實現(xiàn)詳解

    為什么要進(jìn)程替換？因為父進(jìn)程創(chuàng)建出來的子進(jìn)程和父進(jìn)程擁有相同的代碼段，所以，子進(jìn)程看到的代碼和父進(jìn)程是一樣的。當(dāng)我們想要讓子進(jìn)程執(zhí)行不同的程序時候，就需要讓子進(jìn)程調(diào)用進(jìn)程程序替換的接口，從而讓子進(jìn)程執(zhí)行不一樣的代碼
    2022-08-08

最新評論

丰台区| 南阳市| 赞皇县| 麦盖提县| 北碚区| 沾化县| 开鲁县| 贵州省| 金坛市| 洱源县| 上犹县| 瓮安县| 凤城市| 江陵县| 金塔县| 东阳市| 灌阳县| 伊宁县| 海城市| 利津县| 年辖：市辖区| 泽库县| 鄂托克旗| 获嘉县| 双牌县| 习水县| 玉溪市| 兴海县| 读书| 台南市| 汽车| 阜城县| 乐清市| 常州市| 乐陵市| 永泰县| 洪泽县| 新民市| 伊宁县| 凤庆县| 安阳县|