client.cpp

#include "client.h"

UDPClient::UDPClient(QObject *parent) :
    QObject(parent)
{
    socket = new QUdpSocket(this);

    //We need to bind the UDP socket to an address and a port
    socket->bind(QHostAddress::LocalHost, 1234);         //ex. Address localhost, port 1234

    connect(socket,SIGNAL(readyRead()),this,SLOT(readyRead()));
}


void UDPClient::SayHello()      //Just spit out some data
{
    QByteArray Data;
    Data.append("Hello from UDP land");

    socket->writeDatagram(Data,QHostAddress::LocalHost, 1234);

    //If you want to broadcast something you send it to your broadcast address
    //ex. 192.2.1.255
}


void UDPClient::readyRead()     //Read something
{
    while (socket->hasPendingDatagrams()) {
        QByteArray Buffer;
        Buffer.resize(socket->pendingDatagramSize());

        QHostAddress sender;
        quint16 senderPort;
        socket->readDatagram(Buffer.data(),Buffer.size(),&sender,&senderPort);

        qDebug() << Buffer.data();
    }

}