87 lines
2.3 KiB
C++
87 lines
2.3 KiB
C++
/*
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* Copyright 2013 Christian Muehlhaeuser
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; version 2.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* Authors:
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* Christian Muehlhaeuser <muesli@gmail.com>
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*/
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#include "discovery.h"
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#include <QDebug>
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#include <QTimer>
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Discovery::Discovery(QObject *parent) :
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QUdpSocket(parent),
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m_timeout(new QTimer(this))
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{
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quint16 port = 1900;
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unsigned int tries = 0;
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const unsigned int maxtries = 10;
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while (!bind(port++)) {
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if (++tries == maxtries) {
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QMetaObject::invokeMethod(this, "error", Qt::QueuedConnection);
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return;
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}
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}
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connect(this, SIGNAL(readyRead()), this, SLOT(onReadyRead()));
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m_timeout->setSingleShot(true);
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connect(m_timeout, SIGNAL(timeout()), this, SLOT(onTimeout()));
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}
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bool Discovery::findBridges(int timeout)
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{
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m_timeout->stop();
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m_reportedBridges.clear();
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QString b("M-SEARCH * HTTP/1.1\r\n"
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"HOST: 239.255.255.250:1900\r\n"
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"MAN: \"ssdp:discover\"\r\n"
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"MX: %1\r\n"
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"ST: libhue:idl\r\n");
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b.arg(timeout / 1000);
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// qDebug() << "writing datagram" << b;
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m_timeout->start(timeout);
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if (writeDatagram(b.toUtf8(), QHostAddress("239.255.255.250"), 1900) < 0) {
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return false;
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}
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return true;
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}
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void Discovery::onTimeout()
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{
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emit discoveryDone(m_reportedBridges);
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}
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void Discovery::onReadyRead()
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{
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while (hasPendingDatagrams()) {
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QByteArray datagram;
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datagram.resize(pendingDatagramSize());
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QHostAddress sender;
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quint16 senderPort;
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readDatagram(datagram.data(), datagram.size(), &sender, &senderPort);
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// qDebug() << "got datagram" << datagram;
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if (!m_reportedBridges.contains(sender)) {
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m_reportedBridges << sender;
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}
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}
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}
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