#viewer.show_stream("tcp://localhost:" + str(DEFAULT_PIPELINE_PORT))
#pipeline_config = PipelineConfig("test_pipeline", parameters={"camera_name": "simulation", "function":"transparent"})
#start_pipeline("test_pipeline", {"camera_name": "simulation", "function":"transparent"})

with source(host="127.0.0.1", port=DEFAULT_PIPELINE_PORT, mode=SUB, receive_timeout = 3000) as stream:
    data = stream.receive()
    if not data: 
        raise Exception("Received None message.")
    print (data.data.data.keys())