Getting ConnectionAbortedError after all nodes are finished subscription which was earlier working fine for last few months

[rajnishnationfirst]

Hi Team,

We developed a OPC UA client in python for datachange event for a SIEMENS WinCC over OPC UA which was running fine for few 7-8 months and suddenly from today where i am subscribing for all 900 nodes and then after the subscription and publiishing , ConnectionAbortedError showing the below exception is shown ..

Exceptions Thrown after all publishing is completed with Subscrption

ConnectionAbortedError: [WinError 10053] An established connection was aborted by the software in host machine.

Image Snapshot of OPC UA Alarms Client

Hi Team,

I am facing issues at start during subscribing 900+ Tags for on_datachnage_notiification event. ( here i have a python list containing all 900+ Node Ids of Tags and i am suscribing the whole list as shown below in the code .)

After subscription events for all nodes are over then i am getting a ConnectionAbortedError which is shown in the image below .

if name == "main":
logging.basicConfig(level=logging.WARN)
# logger = logging.getLogger("KeepAlive")
# logger.setLevel(logging.DEBUG)

client = Client("opc.tcp://AAAAAAAAAA:4861")

try:
    client.connect()

    node_Id_List = []
    for iterator in range(len(tags_node_ids_list)):
        node_Id_List.append(client.get_node(tags_node_ids_list[iterator]))


    # subscribing to a variable node
    handler = SubHandler()
    sub = client.create_subscription(500, handler)
    handle = sub.subscribe_data_change(node_Id_List)
    time.sleep(0.1)


finally:
    pass

Pls help me colleagues.
Thanks

Rajnish Vishwakarma