网络调试助手:
提前准备:在编写代码前,要在.pro工程文件中,添加network模块。
服务端:
代码:
widget.h
cpp
#ifndef WIDGET_H
#define WIDGET_H
#include <QWidget>
#include <QtWidgets>
#include <QTcpServer> // 监听套接字
#include <QTcpSocket> // 通讯套接字
namespace Ui {
class Widget;
}
class Widget : public QWidget
{
Q_OBJECT
public:
explicit Widget(QWidget *parent = nullptr);
~Widget();
private slots:
void on_start_button_clicked(); // 启动按钮slot
void new_connection_slot(); // 连接slot
void ready_read_slot(); // 可读slot
void on_send_button_clicked(); // 发送按钮slot
private:
Ui::Widget *ui;
QTcpServer *tcp_server; // 服务端
QTcpSocket *tcp_socket; // socket
};
#endif // WIDGET_H
widget.cpp
cpp
#include "widget.h"
#include "ui_widget.h"
Widget::Widget(QWidget *parent) :
QWidget(parent),
ui(new Ui::Widget)
{
ui->setupUi(this);
this->setWindowTitle("网络调试器服务端"); // 标题
// 实例化监听套接字
tcp_server = new QTcpServer(this);
tcp_socket = nullptr;
connect(tcp_server,&QTcpServer::newConnection,this,&Widget::new_connection_slot);
}
Widget::~Widget()
{
delete ui;
}
void Widget::on_start_button_clicked()
{
// 监听( bind() + listen() )
if(ui->start_button->text() == "启动"){
QString ip = ui->ip_edit->text(); // 读取ip
QString port = ui->port_edit->text(); // 读取port
if(!tcp_server->listen(QHostAddress(ip),port.toUShort())){
ui->plainTextEdit->setPlainText("服务端启动失败....");
}
else{
ui->plainTextEdit->setPlainText("服务端启动成功....");
ui->start_button->setText("断开"); // 改变按钮文本
}
}
else if(ui->start_button->text() == "断开"){
tcp_server->close(); // 关闭
ui->plainTextEdit->appendPlainText("服务器断开成功....");
ui->start_button->setText("启动"); // 改变按钮文本
}
}
void Widget::new_connection_slot()
{
tcp_socket = tcp_server->nextPendingConnection();
QString client_ip = tcp_socket->peerAddress().toString(); // 获取客户端ip(转换成QString)
quint16 client_port = tcp_socket->peerPort();
ui->plainTextEdit->appendPlainText(QString("客户端 IP: %1 PORT:%2 连接成功").arg(client_ip).arg(client_port));
connect(tcp_socket,&QTcpSocket::readyRead,this,&Widget::ready_read_slot);
}
void Widget::ready_read_slot()
{
QByteArray buf = tcp_socket->readAll(); // 读数据
QString s = QString::fromLocal8Bit(buf); // 编码转换
ui->plainTextEdit->appendPlainText(QString("服务端发来数据:%1").arg(QString(s))); // 显示
}
void Widget::on_send_button_clicked()
{
QString buf = ui->send_edit->text(); // 读数据
tcp_socket->write(buf.toLocal8Bit()); // 发送数据
ui->plainTextEdit->appendPlainText(QString("服务端发送数据:%1").arg(buf)); // 显示
}
widget.ui
输出:
客户端:
代码:
widget.h
cpp
#ifndef WIDGET_H
#define WIDGET_H
#include <QWidget>
#include <QTcpSocket>
namespace Ui {
class Widget;
}
class Widget : public QWidget
{
Q_OBJECT
public:
explicit Widget(QWidget *parent = nullptr);
~Widget();
private slots:
void on_start_button_clicked(); // 连接按钮slot
void ready_read_slot(); // 可读slot
void on_send_button_clicked(); // 发送按钮slot
private:
Ui::Widget *ui;
QTcpSocket *tcp_sock; // socket
};
#endif // WIDGET_H
widget.cpp
cpp
#include "widget.h"
#include "ui_widget.h"
Widget::Widget(QWidget *parent) :
QWidget(parent),
ui(new Ui::Widget)
{
ui->setupUi(this);
tcp_sock = new QTcpSocket(this);
this->setWindowTitle("网络调试器客户端"); // 标题
connect(tcp_sock,&QTcpSocket::readyRead,this,&Widget::ready_read_slot);
}
Widget::~Widget()
{
delete ui;
}
void Widget::on_start_button_clicked()
{
QString ip = ui->ip_edit->text(); // 获取ip
QString port = ui->port_edit->text(); // 获取port
if(ui->start_button->text() == "连接"){
tcp_sock->connectToHost(ip,port.toUShort()); // 连接
if(tcp_sock->waitForConnected()){
ui->plainTextEdit->setPlainText("连接服务器成功...");
ui->start_button->setText("断开"); // 改变按钮文本
}
else{
ui->plainTextEdit->setPlainText("连接服务器失败...");
}
}
else if(ui->start_button->text() == "断开"){
tcp_sock->close(); // 关闭
ui->plainTextEdit->appendPlainText("客户端断开成功....");
ui->start_button->setText("连接"); // 改变按钮文本
}
}
void Widget::ready_read_slot(){
QByteArray buf = tcp_sock->readAll(); // 读数据
QString data = QString::fromLocal8Bit(buf); // 编码转换
ui->plainTextEdit->appendPlainText(QString("服务端发来数据 %1").arg(data));
}
void Widget::on_send_button_clicked()
{
QString buf = ui->send_edit->text(); // 获取数据
tcp_sock->write(buf.toLocal8Bit()); // 编码转换
ui->plainTextEdit->appendPlainText(QString("服务端发送数据 %1").arg(buf));
}