feat: UDP 的的单播和广播功能已经完全实现了
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touwoyimuli
parent
5639919440
commit
488485ee49
@ -22,35 +22,165 @@
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#include "ExTrans.h"
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#include "ui_ExTrans.h"
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#include <QHostInfo>
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ExTrans::ExTrans(QWidget *parent) :
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QMainWindow(parent),
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ui(new Ui::ExTrans)
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{
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ui->setupUi(this);
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setWindowTitle("Tcp通信：unicast(单播) + broadcast(广播)的使用");
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QString hostName = QHostInfo::localHostName();
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QString ip = getLocalIp();
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ui->plainTextEdit->appendPlainText("主机名称：" + hostName + "\n主机IP：" + ip + "\n");
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m_labSocketState = new QLabel("Socket状态：");
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m_labSocketState->setMinimumWidth(200);
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ui->statusBar->addWidget(m_labSocketState);
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ui->comboBoxIp->addItem(getLocalIp());
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m_udpSocket = new QUdpSocket(this);
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connect(m_udpSocket, SIGNAL(stateChanged(QAbstractSocket::SocketState)), this, SLOT(onSocketStateChange(QAbstractSocket::SocketState)));
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onSocketStateChange(m_udpSocket->state());
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connect(m_udpSocket, SIGNAL(readyRead()), this, SLOT(onSocketReadyRead()));
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}
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ExTrans::~ExTrans()
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{
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delete ui;
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}
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//绑定端口
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void ExTrans::on_actBind_triggered()
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{
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quint16 port = ui->spinBoxBind->value(); //本机UDP端口
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if (m_udpSocket->bind(port)) { //端口绑定成功
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ui->plainTextEdit->appendPlainText("端口绑定成功：" + QString::number(m_udpSocket->localPort()));
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ui->actBind->setEnabled(false);
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ui->actDisbind->setEnabled(true);
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} else {
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ui->plainTextEdit->appendPlainText("端口绑定失败");
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}
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}
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//解除绑定
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void ExTrans::on_actDisbind_triggered()
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{
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m_udpSocket->abort(); //断开，中止套接字
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ui->plainTextEdit->appendPlainText("端口解除绑定成功");
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ui->actBind->setEnabled(true);
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ui->actDisbind->setEnabled(false);
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}
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//清除文本信息
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void ExTrans::on_actClean_triggered()
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{
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ui->plainTextEdit->clear();
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}
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//关闭程序
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void ExTrans::on_actQuit_triggered()
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{
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close();
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}
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//单播消息
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void ExTrans::on_btnUnicast_clicked()
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{
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QString targetIp = ui->comboBoxIp->currentText();
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QHostAddress targetAddr(targetIp); //目标 Ip
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quint16 targetPort = ui->spinBoxPort->value(); //目标 port
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QString msg = ui->lineEdit->text(); //发送的消息
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QByteArray str = msg.toUtf8();
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m_udpSocket->writeDatagram(str, targetAddr, targetPort); //发送数据报
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ui->plainTextEdit->appendPlainText(QString("[Send: ] %1").arg(msg));
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ui->lineEdit->clear();
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ui->lineEdit->setFocus();
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}
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//广播消息
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void ExTrans::on_btnBroadcast_clicked()
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{
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quint16 targetPort = ui->spinBoxPort->value(); //目标 port
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QString msg = ui->lineEdit->text(); //发送的消息
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QByteArray str = msg.toUtf8();
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m_udpSocket->writeDatagram(str, QHostAddress::Broadcast, targetPort); //发送 数据报 给所有IP
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ui->plainTextEdit->appendPlainText(QString("[广播: ] %1").arg(msg));
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ui->lineEdit->clear();
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ui->lineEdit->setFocus();
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}
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//socket 状态发生变化
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void ExTrans::onSocketStateChange(QAbstractSocket::SocketState socketState)
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{
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switch (socketState) {
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case QAbstractSocket::UnconnectedState:
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m_labSocketState->setText("socket状态：UnconnectedState");
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break;
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case QAbstractSocket::HostLookupState:
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m_labSocketState->setText("socket状态：HostLookupState");
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break;
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case QAbstractSocket::ConnectingState:
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m_labSocketState->setText("socket状态：ConnectingState");
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break;
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case QAbstractSocket::ConnectedState:
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m_labSocketState->setText("socket状态：ConnectedState");
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break;
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case QAbstractSocket::BoundState:
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m_labSocketState->setText("socket状态：BoundState");
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break;
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case QAbstractSocket::ClosingState:
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m_labSocketState->setText("socket状态：ClosingState");
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break;
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case QAbstractSocket::ListeningState:
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m_labSocketState->setText("socket状态：ListeningState");
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break;
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default:
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m_labSocketState->setText("socket状态：其他未知状态...");
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break;
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}
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}
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//读取 socket 传入的数据
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void ExTrans::onSocketReadyRead()
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{
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while (m_udpSocket->hasPendingDatagrams()) {
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QByteArray datagram;
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datagram.resize(m_udpSocket->pendingDatagramSize());
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QHostAddress peerAddr;
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quint16 peerPort;
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m_udpSocket->readDatagram(datagram.data(), datagram.size(), &peerAddr, &peerPort); //读取数据包，消息+来自的Ip和port
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QString str = datagram.data();
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QString peer = QString("[From: %1 %2] %3").arg(peerAddr.toString()).arg(QString::number(peerPort)).arg(str);
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ui->plainTextEdit->appendPlainText(peer);
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}
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}
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//获取本机IP
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QString ExTrans::getLocalIp()
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{
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QString hostName = QHostInfo::localHostName();
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QHostInfo hostInfo = QHostInfo::fromName(hostName);
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QString Ip = "";
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if (hostInfo.addresses().isEmpty())
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return 0;
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foreach (QHostAddress addr, hostInfo.addresses()) {
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if (addr.protocol() == QAbstractSocket::IPv4Protocol) {
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Ip = addr.toString();
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break;
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}
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}
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return Ip;
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}
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@ -23,11 +23,20 @@
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#define EXTRANS_H
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#include <QMainWindow>
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#include <QLabel>
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#include <QUdpSocket>
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#include <QString>
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namespace Ui {
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class ExTrans;
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}
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/*!
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* \class ExTrans 一个UDP的Deam测试，同时测试单播和广播
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* \brief 因为是在同一台电脑测试，所以IP相同，需要绑定两个不同端口的，这样不会冲突；
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* 若是两台电脑进行测试，那么可以约定使用相同的端口号，使用不同的IP；来进行通讯
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*/
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class ExTrans : public QMainWindow
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{
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Q_OBJECT
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@ -37,13 +46,24 @@ public:
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~ExTrans();
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private slots:
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void on_actBind_triggered();
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void on_actDisbind_triggered();
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void on_actClean_triggered();
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void on_actQuit_triggered();
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void on_actBind_triggered(); //绑定端口
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void on_actDisbind_triggered(); //解除绑定
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void on_actClean_triggered(); //清除文本信息
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void on_actQuit_triggered(); //关闭程序
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void on_btnUnicast_clicked(); //单播消息
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void on_btnBroadcast_clicked(); //广播消息
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void onSocketStateChange(QAbstractSocket::SocketState socketState); //socket 状态发生变化
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void onSocketReadyRead(); //读取 socket 传入的数据
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private:
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QString getLocalIp(); //获取本机IP
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private:
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Ui::ExTrans *ui;
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QLabel* m_labSocketState;
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QUdpSocket* m_udpSocket;
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};
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#endif // EXTRANS_H
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@ -4,7 +4,7 @@
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#
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#-------------------------------------------------
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QT += core gui
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QT += core gui network
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greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
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@ -27,7 +27,7 @@
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</widget>
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</item>
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<item>
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<widget class="QSpinBox" name="spinBox">
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<widget class="QSpinBox" name="spinBoxBind">
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<property name="maximum">
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<number>65000</number>
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</property>
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@ -48,7 +48,14 @@
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</widget>
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</item>
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<item>
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<widget class="QComboBox" name="comboBox"/>
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<widget class="QComboBox" name="comboBoxIp">
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<property name="editable">
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<bool>true</bool>
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</property>
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<property name="currentText">
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<string>129.0.0.1</string>
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</property>
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</widget>
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</item>
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</layout>
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</item>
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@ -62,7 +69,7 @@
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</widget>
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</item>
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<item>
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<widget class="QSpinBox" name="spinBox_2">
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<widget class="QSpinBox" name="spinBoxPort">
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<property name="maximum">
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<number>65000</number>
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</property>
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@ -81,14 +88,14 @@
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<widget class="QLineEdit" name="lineEdit"/>
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</item>
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<item>
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<widget class="QPushButton" name="pushButton">
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<widget class="QPushButton" name="btnUnicast">
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<property name="text">
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<string>单播发送</string>
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</property>
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</widget>
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</item>
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<item>
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<widget class="QPushButton" name="pushButton_2">
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<widget class="QPushButton" name="btnBroadcast">
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<property name="text">
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<string>广播发送</string>
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</property>
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