OceanSocket::OceanSocket(QObject *parent) :
QObject(parent)
{
// setup the heartbeat timer
heartbeat = new QTimer(this);
connect(heartbeat, SIGNAL(timeout()), this, SLOT(heartbeatTimer()));
// setup our ocean sockets
groupAddress = QHostAddress(MULTICAST_ADDRESS);
QList<QNetworkInterface> ifaces = QNetworkInterface::allInterfaces();
for (int i = 0; i < ifaces.count(); i++) {
QNetworkInterface iface = ifaces.at(i);
if (iface.flags().testFlag(QNetworkInterface::IsUp) && !iface.flags().testFlag(QNetworkInterface::IsLoopBack) && iface.flags().testFlag(QNetworkInterface::CanMulticast)) {
for (int j = 0; j < iface.addressEntries().count(); j++) {
if (iface.addressEntries().at(j).ip().protocol() != QAbstractSocket::IPv4Protocol) continue;
qDebug() << "Ocean bind to iface: " << iface.name() << endl << "IP: " << iface.addressEntries().at(j).ip().toString() << endl;
QUdpSocket* socket = new QUdpSocket(this);
socket->bind(QHostAddress::AnyIPv4, 8047, QUdpSocket::ShareAddress | QUdpSocket::ReuseAddressHint);
socket->joinMulticastGroup(groupAddress, iface);
connect(socket, SIGNAL(readyRead()), this, SLOT(processIncomingWaves()));
boundAddresses.append(iface.addressEntries().at(j).ip());
multicastSockets.append(socket);
}
}
}
sendSocket = new QUdpSocket(this);
sendSocket->bind();
}
bool CQMedia::loadURL(const QString& url)
{
QString tmp = url;
tmp.remove(0,6);
QString ip = tmp.split(QChar(':'))[0];
int port = tmp.split(QChar(':'))[1].toInt();
QUdpSocket udp;
udp.bind(port,QUdpSocket::ShareAddress);
udp.joinMulticastGroup(QHostAddress(ip));
QEventLoop q;
QTimer::singleShot(1000,&q,SLOT(quit()));
connect(&udp,SIGNAL(readyRead()),&q,SLOT(quit()));
q.exec();
if(udp.pendingDatagramSize() == -1)
{
//qDebug("has no avalid datapkg...");
QTimer::singleShot(3500,this,SLOT(_emitTimeout()));
return false;
}
qDebug("has avalid datapkg...");
udp.leaveMulticastGroup(QHostAddress(ip));
udp.close();
this->url = url;
// SdpsrcParser sdpSrc(url);
// if(!sdpSrc.isValid())
// {
// qDebug()<<"SdpsrcParser invalid!!";
// return false;
// }
// sdpSrc.printf();
GstElement *udpsrc = gst_bin_get_by_name(GST_BIN(pipeline),"udpsrc");
GstCaps *caps = gst_caps_new_simple("application/x-rtp",NULL);
//QString uri = "udp://"+sdpSrc.broadcastIP+":"+QString::number(sdpSrc.v_port);
// QString uri = "udp://"+sdpSrc.broadcastIP+":"+QString::number(sdpSrc.v_port);
// QString uri = "udp://239.255.42.42:1234";
QString uri = url;
g_object_set(G_OBJECT(udpsrc),"uri",uri.toUtf8().data(),"caps",caps,NULL);
gst_object_unref(udpsrc);
return true;
}
void Discover::announceRecords ()
{
// Reset timer
timer->start(announcePeriodMsec);
if (not running) return;
// Servers don't announce periodically or send departure messages
if (mServerMode) return;
// Start building a list of records to send in each scope
QList<Record> recordsToSend;
///////////////////////////////////////////////////////////////////////
// Global scope first
///////////////////////////////////////////////////////////////////////
for (Record record : ownedRecords)
if (record["Scope"] == "Global")
{
recordsToSend.push_back(record);
}
if (not recordsToSend.empty() or defaultScope=="Global")
{
// This is a discovery request which should be responded to
QByteArray datagram("DSDR");
if (departure) datagram = "DSDD";
datagram += makeDatagram(recordsToSend, false);
// Send to each Global server
for (QPair<QHostAddress,quint16> globalServer : globalServers)
{
globalSocket->writeDatagram(datagram, globalServer.first, globalServer.second);
}
}
///////////////////////////////////////////////////////////////////////
// Local scope next
///////////////////////////////////////////////////////////////////////
for (Record record : ownedRecords)
if (record["Scope"] == "Local")
{
recordsToSend.push_back(record);
}
if (not recordsToSend.empty() or defaultScope=="Global" or defaultScope=="Local")
{
QByteArray datagram("DSDA");
if (announceNeedsResponse) datagram = "DSDR";
if (departure) datagram = "DSDD";
datagram += makeDatagram(recordsToSend, true);
// For each interface
for (auto iface : QNetworkInterface::allInterfaces())
{
// For each IPv4 address on this interface
for (auto entry : iface.addressEntries())
{
if (entry.ip().protocol() != QAbstractSocket::IPv4Protocol) continue;
// Add it to addressEntryCache if necessary for local scope testing
if (not addressEntryCache.contains(entry)) addressEntryCache.push_back(entry);
// Multicast
if (iface.flags().testFlag(QNetworkInterface::CanMulticast) and !entry.ip().isNull() and !entry.ip().isLoopback())
{
// Create the socket if it doesn't exit yet
if (not multiSocket.contains(entry.ip().toString()))
{
logDebug(QString("New multicast socket: %1 %2").arg(entry.ip().toString(), entry.netmask().toString()));
// Add it, create and bind the socket
QUdpSocket* socket = new QUdpSocket(this);
connect(socket, SIGNAL(readyRead()), this, SLOT(readDatagrams()));
socket->setSocketOption(QAbstractSocket::MulticastTtlOption, 1);
if (not socket->bind(QHostAddress::AnyIPv4, port, QAbstractSocket::ShareAddress | QAbstractSocket::ReuseAddressHint))
{
logWarning(QString("Error binding to iface %1: %2").arg(entry.ip().toString(), socket->errorString()));
}
socket->setMulticastInterface(iface);
socket->joinMulticastGroup(groupAddress, iface);
multiSocket.insert(entry.ip().toString(), socket);
}
// Send datagram
multiSocket[entry.ip().toString()]->writeDatagram(datagram, groupAddress, port);
}
}
}
}
///////////////////////////////////////////////////////////////////////
// Loopback scope last
///////////////////////////////////////////////////////////////////////
for (Record record : ownedRecords)
if (record["Scope"] == "Loopback")
{
recordsToSend.push_back(record);
}
if (not recordsToSend.empty() or true) // Any scope is above or equivalent to loopback
{
QByteArray datagram("DSDA");
if (announceNeedsResponse) datagram = "DSDR";
if (departure) datagram = "DSDD";
datagram += makeDatagram(recordsToSend, true);
// Loopback
//loopbackSocket->writeDatagram(datagram, QHostAddress::LocalHost, port);
}
// Reset
announceNeedsResponse = false;
departure = false;
}
