QT tcpserver

#include "widget.h"
#include "ui_widget.h"

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

    // 服务端有QTcpServer库，封装了监听操作
    server = new QTcpServer();

    // 直接监听，内部根据传入的ip和端口进行绑定
    server->listen(QHostAddress::AnyIPv4, SERVER_PORT);

    // 对server进行新的连接信号建立信号槽
    connect(server, &QTcpServer::newConnection, this, &Widget::newClientHandler);

}

Widget::~Widget()
{
    delete ui;
}


void Widget::newClientHandler()
{
    // 将获取到的新的连接套接字中获取客户端ip和端口
    socket = server->nextPendingConnection();
    ui->hostLineEdit->setText(socket->peerAddress().toString());
    ui->portLineEdit->setText(QString::number(socket->peerPort()));
}



void Widget::on_closeButton_clicked()
{
    socket->close();
}