思维导图

实现服务器连接多个客户端局域网

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

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

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


void Widget::on_pushButton_clicked()
{
    //quint16 port = ui->lineEdit->text(),toULnt();
     quint16 port=ui->lineEdit->text().toUInt();
     if(sever->listen(QHostAddress::Any,port))
     {
         QMessageBox::information(this,"","启动服务状态");
     }
     else
     {
          QMessageBox::information(this,"","服务器启动失败");
          return;
     }
     connect(sever,&QTcpServer::newConnection,this,&Widget::newConnection_slot);
}
void Widget::newConnection_slot()
{
   
    QTcpSocket *s = sever->nextPendingConnection();
    socketList.push_back(s);
    connect(s,&QTcpSocket::readyRead,this,&Widget::readyRead_slot);

}

void Widget::readyRead_slot()
{
    
    for(int i=0; i<socketList.count();i++)
    {
       if(socketList.at(i)->state()==0)
       {
          
           socketList.removeAt(i);
       }

    }
    for(int i=0;i<socketList.count();i++)
    {
        if(socketList.at(i)->bytesAvailable() !=0)
        {
            QByteArray msg = socketList.at(i)->readAll();
            ui->listWidget->addItem(QString::fromLocal8Bit(msg));
            for(int j=0;j<socketList.count();j++)
            {
                socketList.at(j)->write(msg);
            }
        }
    }
}