UWP Server Socket not listening - windows

Question

I am creating a simple UWP console server app with reference to the contents of this and this links.
However, if i create code based on the examples and run it, I will not be able to connect to the server. Also, the port is not open when checked with a command such as "netstat -na".
Does anyone know how to solve it?
The code is shown below. I would appreciate if you find any errors in the code below.
#include "pch.h"
#include <sstream>
#include <iostream>
using namespace Platform;
using namespace Concurrency;
using namespace Windows::Foundation;
using namespace Windows::Networking;
using namespace Windows::Networking::Sockets;
using namespace Windows::Networking::Connectivity;
using namespace Windows::Storage::Streams;
namespace SocketTest {
public ref class Server sealed {
public:
Server();
void Run();
protected:
void Server::onConnReceived(
Windows::Networking::Sockets::StreamSocketListener^ listener,
Windows::Networking::Sockets::StreamSocketListenerConnectionReceivedEventArgs^ object);
};
}
using namespace SocketTest;
Server::Server() {
}
void Server::onConnReceived(
StreamSocketListener^ listener,
StreamSocketListenerConnectionReceivedEventArgs^ object)
{
try {
DataReader^ reader = ref new DataReader(object->Socket->InputStream);
//ReceiveStringLoop(reader, object->Socket);
delete object->Socket;
}
catch (Exception^ exception) {
std::cout << "onconnection error" << std::endl;
}
}
void Server::Run() {
StreamSocketListener^ listener = ref new StreamSocketListener();
listener->ConnectionReceived += ref new TypedEventHandler<Windows::Networking::Sockets::StreamSocketListener^, Windows::Networking::Sockets::StreamSocketListenerConnectionReceivedEventArgs^>(this, &Server::onConnReceived);
listener->Control->KeepAlive = true;
create_task(listener->BindServiceNameAsync(L"12345")).then(
[=]
{
try
{
std::cout << "Listening ..." << std::endl;
}
catch (Exception^ exception)
{
std::cout << "Bind error" << exception->Message->Data() << std::endl;
}
});
}
int main(Platform::Array<Platform::String^>^ args)
{
Server^ s = ref new Server();
s->Run();
getchar();
}
Or, if you have a better code example, let me know.