QRemoteObjectNode::remoteObjectAdded signal does not fire - qt

Question

While learning how to use QtRO tech preview module, I tried a simple 3 node network ( A registry node, a source object remoting node, and a client node).
registry node main.cpp:
#include <QCoreApplication>
#include <QRemoteObjectRegistryHost>
int main(int argc, char *argv[])
{
QCoreApplication a(argc, argv);
QRemoteObjectRegistryHost host(QUrl("tcp://127.0.0.1:5557"));
return a.exec();
}
source node main.cpp:
#include <QCoreApplication>
#include <QRemoteObjectHost>
#include <QTimer>
int main(int argc, char *argv[])
{
QCoreApplication a(argc, argv);
QTimer timer;
timer.start(10000);
QRemoteObjectHost host;
if(!host.setHostUrl(QUrl("tcp://127.0.0.1:5556"))) qDebug() << "Host url " << host.lastError();
if(!host.setRegistryUrl(QUrl("tcp://127.0.0.1:5557"))) qDebug() << "Reg url " << host.lastError();
if(!host.enableRemoting(&timer, "HostTimer")) qDebug() << "Remoting error " << host.lastError();
return a.exec();
}
client node main.cpp:
#include <QCoreApplication>
#include <QRemoteObjectNode>
#include <QTimer>
int main(int argc, char *argv[])
{
QCoreApplication a(argc, argv);
QRemoteObjectNode node(QUrl("tcp://127.0.0.1:5557"));
QObject::connect(&node, &QRemoteObjectNode::remoteObjectAdded,
[](const QRemoteObjectSourceLocation& info){
qDebug() << "New source added : " << info;
});
qDebug() << "Waiting for registry ";
node.waitForRegistry(10000);
qDebug() << "Already here sources : " << node.registry()->sourceLocations();
QTimer timer;
timer.start(5000);
QObject::connect(&timer, &QTimer::timeout,
[&](){
qDebug() << "New sources list : " << node.registry()->sourceLocations();
});
return a.exec();
}
I begin by starting the registry node, then the client node and finally the source node, with this launch sequence I expect to get the remoteObjectAdded fired up, but It didn't.
Your help will be highly appreciated.

Answer 1

I answer my question.
I used the wrong signal source in the connect method call.
the client node will be as :
#include <QCoreApplication>
#include <QRemoteObjectNode>
#include <QTimer>
int main(int argc, char *argv[])
{
QCoreApplication a(argc, argv);
QRemoteObjectNode node(QUrl("tcp://127.0.0.1:5557"));
QObject::connect(node.registry(), &QRemoteObjectRegistry::remoteObjectAdded,
[](const QRemoteObjectSourceLocation& info){
qDebug() << "New source added : " << info;
});
qDebug() << "Waiting for registry ";
node.waitForRegistry(10000);
qDebug() << "Already here sources : " << node.registry()->sourceLocations();
QTimer timer;
timer.start(5000);
QObject::connect(&timer, &QTimer::timeout,
[&](){
qDebug() << "New sources list : " << node.registry()->sourceLocations();
});
return a.exec();
}
It is the registry who fire the signal not the node, It sound logic after all the source nodes are connected to the registry, so it fire the remoteObjectAdded signal.