feat: TcpClient 客户端功能完成，且测试服务器和客户端之间的通讯成功

QtTcpEx/ExTcpClient/ExTcpClient.cpp

@@ -6,6 +6,21 @@ ExTcpClient::ExTcpClient(QWidget *parent) :
     ui(new Ui::ExTcpClient)
 {
     ui->setupUi(this);
+
+    m_labSocket = new QLabel("socket状态：");
+    m_labSocket->setMidLineWidth(150);
+    ui->statusBar->addWidget(m_labSocket);
+
+    m_tcpSocket = new QTcpSocket(this);
+
+    QString localIp = getLocalIp();
+    this->setWindowTitle(windowTitle() + "----本机IP:" + localIp);
+    ui->comboBox->addItem(localIp);
+
+    connect(m_tcpSocket, SIGNAL(connected()), this, SLOT(onConnected()));
+    connect(m_tcpSocket, SIGNAL(disconnected()), this, SLOT(onDisconnected()));
+    connect(m_tcpSocket, SIGNAL(stateChanged(QAbstractSocket::SocketState)), this, SLOT(onSocketStateChange(QAbstractSocket::SocketState)));
+    connect(m_tcpSocket, SIGNAL(readyRead()), this, SLOT(onSocketReadyRead()));
 }
 
 ExTcpClient::~ExTcpClient()
@@ -21,23 +36,85 @@ QString ExTcpClient::getLocalIp()
     QString localIp;
 
     foreach (QHostAddress addr, hostInfo.addresses()) {
-        if (QAbstractSocket::IPv4Protocol == addr.toString()) {
+        if (QAbstractSocket::IPv4Protocol == addr.protocol()) {
             localIp = addr.toString();
             break;
         }
     }
-
     return localIp;
 }
 
+void ExTcpClient::closeEvent(QCloseEvent *event)
+{
+    if (m_tcpSocket->state() == QAbstractSocket::ConnectedState)
+        m_tcpSocket->disconnectFromHost();
+
+    event->accept();
+}
+
+void ExTcpClient::onConnected()
+{
+    ui->plainTextEdit->appendPlainText("已经连接到服务器\n客户端套接字连接\n对等(peer)地址：" + m_tcpSocket->peerAddress().toString()
+                                       + "    对等(peer)端口：" +  QString::number(m_tcpSocket->peerPort()));
+    ui->actConnect->setEnabled(false);
+    ui->actDisconnect->setEnabled(true);
+}
+
+void ExTcpClient::onDisconnected()
+{
+    ui->plainTextEdit->appendPlainText("已经断开与服务器的连接\n");
+    ui->actConnect->setEnabled(true);
+    ui->actDisconnect->setEnabled(false);
+}
+
+void ExTcpClient::onSocketReadyRead()
+{
+    while (m_tcpSocket->canReadLine()) {
+        ui->plainTextEdit->appendPlainText("[服务器:]" + m_tcpSocket->readLine());
+    }
+}
+
+void ExTcpClient::onSocketStateChange(QAbstractSocket::SocketState socketState)
+{
+    switch (socketState) {
+    case QAbstractSocket::UnconnectedState:
+        m_labSocket->setText("socket状态：UnconnectedState");
+        break;
+    case QAbstractSocket::HostLookupState:
+        m_labSocket->setText("socket状态：HostLookupState");
+        break;
+    case QAbstractSocket::ConnectingState:
+        m_labSocket->setText("socket状态：ConnectingState");
+        break;
+    case QAbstractSocket::ConnectedState:
+        m_labSocket->setText("socket状态：ConnectedState");
+        break;
+    case QAbstractSocket::BoundState:
+        m_labSocket->setText("socket状态：BoundState");
+        break;
+    case QAbstractSocket::ClosingState:
+        m_labSocket->setText("socket状态：ClosingState");
+        break;
+    case QAbstractSocket::ListeningState:
+        m_labSocket->setText("socket状态：ListeningState");
+        break;
+    default:
+        m_labSocket->setText("socket状态：其他未知状态...");
+        break;
+    }
+}
+
 void ExTcpClient::on_actConnect_triggered()
 {
-
+    QString addr = ui->comboBox->currentText();
+    quint16 port = ui->spinBox->value();
+    m_tcpSocket->connectToHost(addr, port);
 }
 
 void ExTcpClient::on_actDisconnect_triggered()
 {
-
+    if(m_tcpSocket->state() == QAbstractSocket::ConnectedState)
+        m_tcpSocket->disconnectFromHost();
 }
 
 void ExTcpClient::on_actClear_triggered()
@@ -49,3 +126,15 @@ void ExTcpClient::on_actQuit_triggered()
 {
     close();
 }
+
+void ExTcpClient::on_btnSend_clicked()
+{
+    QString msg = ui->lineEdit->text();
+    ui->plainTextEdit->appendPlainText("[客户端:]" + msg);
+    ui->lineEdit->clear();
+    ui->lineEdit->setFocus();
+
+    QByteArray str = msg.toUtf8();
+    str.append('\n');
+    m_tcpSocket->write(str);
+}

QtTcpEx/ExTcpClient/ExTcpClient.h

@@ -21,6 +21,8 @@ public:
 private:
     QString getLocalIp();                  //获取本本机 IP
 
+protected:
+    void closeEvent(QCloseEvent *event);
 
 private slots:
     //UI 定义的槽函数
@@ -28,6 +30,13 @@ private slots:
     void on_actDisconnect_triggered();  //断开与服务器的连接
     void on_actClear_triggered();       //清除内容
     void on_actQuit_triggered();        //退出程序
+    void on_btnSend_clicked();          //发送文本消息
+
+    //自定义的槽函数
+    void onConnected();
+    void onDisconnected();
+    void onSocketReadyRead();           //从socket读取传入的数据
+    void onSocketStateChange(QAbstractSocket::SocketState socketState);
 
 private:
     Ui::ExTcpClient *ui;

QtTcpEx/ExTcpClient/ExTcpClient.ui

@@ -113,6 +113,7 @@
    <addaction name="actClear"/>
    <addaction name="actQuit"/>
   </widget>
+  <widget class="QStatusBar" name="statusBar"/>
   <action name="actConnect">
    <property name="icon">
     <iconset resource="resource.qrc">

QtTcpEx/ExTcpServer/ExTcpServer.cpp

@@ -31,6 +31,7 @@ QString ExTcpServer::getLocalIp()
 {
     QString hostName = QHostInfo::localHostName();
     QHostInfo hostInfo = QHostInfo::fromName(hostName);
+    ui->plainTextEdit->appendPlainText("本机名称：" + hostName);
     QString locaIp;
 
     QList<QHostAddress> list = hostInfo.addresses();
@@ -96,7 +97,7 @@ void ExTcpServer::on_actQuit_triggered()
 void ExTcpServer::on_btnSend_clicked()
 {
     QString msg = ui->lineEdit->text();
-    ui->plainTextEdit->appendPlainText("[out]" + msg);
+    ui->plainTextEdit->appendPlainText("[服务器:]" + msg);
     ui->lineEdit->clear();
     ui->plainTextEdit->hasFocus();
 
@@ -108,7 +109,7 @@ void ExTcpServer::on_btnSend_clicked()
 void ExTcpServer::onSocketReadyRead()     //读取缓冲区行文本
 {
     while (m_tcpSocket->canReadLine()) {
-        ui->plainTextEdit->appendPlainText("[in]" + m_tcpSocket->readLine());
+        ui->plainTextEdit->appendPlainText("[客户端:]" + m_tcpSocket->readLine());
     }
 }
 

QtTcpEx/ExTcpServer/ExTcpServer.ui

@@ -6,8 +6,8 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>517</width>
+    <width>573</width>
-    <height>314</height>
+    <height>341</height>
    </rect>
   </property>
   <property name="windowTitle">
@@ -96,7 +96,7 @@
     <rect>
      <x>0</x>
      <y>0</y>
-     <width>517</width>
+     <width>573</width>
      <height>25</height>
     </rect>
    </property>