#include "udpsender.h"

udpSender::udpSender(QObject *parent)
    : QObject{parent}
{
    UdpSocket=new QUdpSocket();
    UdpSocket->bind(port_receive);
    connect(UdpSocket, &QUdpSocket::readyRead,this, &udpSender::readPendingDatagrams);
    QEventLoop Loop;
}

void udpSender::GetLocalIP()
{
    QString   hostName=QHostInfo::localHostName();
    qDebug()<<hostName;
    QHostInfo hostInfo=QHostInfo::fromName(hostName);
    QString   localIP="";
    QList<QHostAddress> addList=hostInfo.addresses();

    foreach (QHostAddress aHost,addList)
    {
        if(QAbstractSocket::IPv4Protocol==aHost.protocol())
        {
            localIP=aHost.toString();
            qDebug()<<localIP;
        }
    }
}

int udpSender::SendUDP(QString ID)
{
    qDebug()<<QHostAddress::Broadcast;
    UdpSocket->writeDatagram(ID.toUtf8(),QHostAddress::Broadcast,port_send);
    return 1;
}

void udpSender::readPendingDatagrams()
{
    qDebug()<<"Read";
    QByteArray   datagram;
    datagram.resize(UdpSocket->pendingDatagramSize());

    QHostAddress    peerAddr;
    quint16 peerPort;
    UdpSocket->readDatagram(datagram.data(),datagram.size(),&peerAddr,&peerPort);
    QString str=datagram.data();

    QString peer="[From "+peerAddr.toString()+":"+QString::number(peerPort)+"] ";
    qDebug()<<peer+str;
}