基于TCP套接字实现简单的通信

server端只接收数据，client端发送数据

 

server端代码：

server::server(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::server)
{
    ui->setupUi(this);

    this->setWindowTitle("QQ2010");

 

//绑定套接字

    tcpServer = new QTcpServer;
    tcpServer->listen(QHostAddress("219.229.140.203"), 8888);
    QObject::connect(tcpServer, SIGNAL(newConnection()), this,
                     SLOT(processConnection()));
    QObject::connect(ui->sendaction, SIGNAL(triggered()), this, SLOT(sendFile()));
    QObject::connect(ui->recvaction, SIGNAL(triggered()), this, SLOT(recvFile()));
}

server::~server()
{
    delete ui;
}

void server::changeEvent(QEvent *e)
{
    QMainWindow::changeEvent(e);
    switch (e->type()) {
    case QEvent::LanguageChange:
        ui->retranslateUi(this);
        break;
    default:
        break;
    }
}

 

//处理连接信号

void server::processConnection()
{
    tcpSocket = new QTcpSocket;
    tcpSocket = tcpServer->nextPendingConnection();
    QObject::connect(tcpSocket, SIGNAL(readyRead()), this, SLOT(processReadData()));
}

 

//处理socket数据可读信号

void server::processReadData()
{
    time = QDateTime(QDateTime::currentDateTime());
    QString timeString = time.toString("hh:mm:ss");
    ui->messagetextEdit->append(timeString);
    ui->messagetextEdit->append(QString(tcpSocket->readAll()));
}