cnstream/source/cns_launcher/configs/udp.json

{
    "udp":{
        "class_name": "cnstream::udp",
        "parallelism" : 1,
        "max_input_queue_size" : 20,
        "show_perf_info" : true,
        "custom_params" : {
            "sendSockerIP": "127.0.0.1",
            "sendPort": 7777
        }
    }
}