qt得到本机ip和创建socket

来源：互联网发布：黑界扣字滚刀软件编辑：程序博客网时间：2024/05/17 21:39

QList<QHostAddress> NetList = QNetworkInterface::allAddresses(); //取得全部信息

        for(int Neti = 0;Neti < NetList.count(); Neti++)

            if(QAbstractSocket::IPv4Protocol==NetList.at(Neti).protocol())//找ip4协议的

                ip=NetList.at(Neti).toString();//如果没有其他ip地址 127.0.0.1也要

                if(NetList.at(Neti).toString() != "127.0.0.1")

                    break;

        if(ip.length()<1){

            QMessageBox::information(this,"失败","得不到本机ip地址不能发送消息!");

            return;

        udpSocket = new QUdpSocket(this);

        udp=udpSocket->bind(receiveport);

        if(!udp)

            QMessageBox::information(this,"失败","本机绑定2006udp端口失败!");

            return;

        connect(udpSocket, SIGNAL(readyRead()),this, SLOT(dataReceived()));

        connect(udpSocket,SIGNAL(error(QAbstractSocket::SocketError)),this,SLOT(error(QAbstractSocket::SocketError)));

void DialogCheck::error(QAbstractSocket::SocketError err){
    qDebug() << err << "==" << this->udpSocket->errorString();
}