simple script to get OPCUA server endpoint

getEndpoint_simple

### how to use

    node getEndpointBasic.js opc.tcp://opcuademo.sterfive.com:26543

getEndpointBasic.js

const { OPCUAClient, SecurityPolicy, MessageSecurityMode } = require("node-opcua");

const endpointUri = process.argv[2] || "opc.tcp://opcuademo.sterfive.com:26543";
(async () => {

    try {
        console.log("connecting to ", endpointUri);

        const client = OPCUAClient.create({ endpoint_must_exist: false });
        client.on("backoff", () => {
            console.log("still connecting ", endpointUri);
        })
        await client.connect(endpointUri);

        const endpoints = await client.getEndpoints();

        for (const endpoint of endpoints) {
            console.log(
                endpoint.endpointUrl.padEnd(40),
                endpoint.securityPolicyUri.padEnd(60),
                MessageSecurityMode[endpoint.securityMode]
            );

        }

        await client.disconnect();
    }
    catch (err) {
        console.log(err.message);
        process.exit();
    }
})();