VtkSockets connection to not VTK Socket

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1

Hi,
I am new to VTK and try to connect the vtkServerSocket to my TCP Client (Putty).
I tried this:

vtkSmartPointer<vtkServerSocket> ssocket = vtkSmartPointer<vtkServerSocket>::New();
vtkSmartPointer<vtkSocketController> socketController =vtkSmartPointer<vtkSocketController>::New();
vtkSmartPointer<vtkSocketCommunicator> socketCommunicator = vtkSmartPointer<vtkSocketCommunicator>::New();

socketController->SetCommunicator(socketCommunicator);
socketController->Initialize();
	
ssocket->CreateServer(port);
int response;

while (true)
{
	printf("waiting...");
	response= socketCommunicator->WaitForConnection(ssocket,100);

	if (response == 1) {
		printf("connected");
		break;
	}
}

But it doesnt work as expected and as soon as Putty is trying to connect vtk stops working in this line “response= socketCommunicator->WaitForConnection(ssocket,100);” and doesnt go further. Can someone help me?