// @nuget: Workstation.UaClient -version 2.4.0

using System;

using System.Linq;

using System.Threading.Tasks;

using Workstation.ServiceModel.Ua;

public class Program

{

    /// <summary>

    /// Discovers the available endpoints of a server.

    /// </summary>

    public static async Task Main()

    {

        // discover available endpoints of server.

        var getEndpointsRequest = new GetEndpointsRequest

        {

            EndpointUrl = "opc.tcp://opcua.rocks:4840", // the public endpoint of a server at opcua.rocks.

            ProfileUris = new[] { TransportProfileUris.UaTcpTransport }

        };

        try

        {

            Console.WriteLine($"Discovering endpoints of '{getEndpointsRequest.EndpointUrl}'.");

            var getEndpointsResponse = await UaTcpDiscoveryService.GetEndpointsAsync(getEndpointsRequest);

​

            // success! found server at discovery endpoint.

            Console.WriteLine($"Found {getEndpointsResponse.Endpoints.Length} endpoint(s).");

            foreach(var ep in getEndpointsResponse.Endpoints.OrderBy(e => e.SecurityLevel)) 

            {

                Console.WriteLine("{");

                Console.WriteLine($"  EndpointUrl: '{ep.EndpointUrl}'.");

                Console.WriteLine($"  SecurityPolicy: '{ep.SecurityPolicyUri}'.");

                Console.WriteLine($"  SecurityMode: '{ep.SecurityMode}'.");

                Console.WriteLine($"  UserIdentityTokens: {String.Join(',', ep.UserIdentityTokens.Select(e=>e.TokenType.ToString()))}");

                Console.WriteLine("}");

            }

        }

        catch(Exception ex)

        {

            Console.WriteLine(ex.Message);

        }

    }

}

​

​