Files
lmxopcua/tests/Server/ZB.MOM.WW.OtOpcUa.OpcUaServer.Tests/OpcUaApplicationHostServerArrayTests.cs
T
Joseph Doherty f02067d295 test: retry OPC UA host start on a port bind race (TOCTOU in AllocateFreePort)
The tests probe a free port (bind 0, release) and start the SDK server later; under a
highly parallel run another test can take the port in between and the SDK fails with
'Failed to establish tcp listener sockets for Ipv4 and IPv6.'. OpcUaHostStart.StartAsync
builds a fresh host + server on a fresh port per attempt (up to 5) when the failure is a
bind failure; all 45 start sites in OpcUaServer.Tests, OpcUaServer.IntegrationTests and
Runtime.Tests use it. Per-attempt GUID ApplicationUris are hoisted out of the host factory
because a changed URI against a reused PKI store fails with 'Cannot access private key'.

Claude-Session: https://claude.ai/code/session_01Ef2ozxS7QPanGT8uoATbTe
2026-10-08 22:30:55 -04:00

56 lines
2.1 KiB
C#

using System.IO;
using System.Net.Sockets;
using System.Net;
using Microsoft.Extensions.Logging.Abstractions;
using Opc.Ua;
using Opc.Ua.Server;
using Shouldly;
using Xunit;
using ZB.MOM.WW.OtOpcUa.OpcUaServer;
namespace ZB.MOM.WW.OtOpcUa.OpcUaServer.Tests;
/// <summary>
/// Audit gap closeout — verifies <see cref="OpcUaApplicationHostOptions.PeerApplicationUris"/>
/// is reflected in <c>Server.ServerArray</c> after start. Single-server in-process check; the
/// cross-server visibility check lives in <c>OtOpcUa.OpcUaServer.IntegrationTests</c>.
/// </summary>
public sealed class OpcUaApplicationHostServerArrayTests
{
/// <summary>
/// Verifies that ServerArray contains local URI and configured peer URIs after start.
/// </summary>
[Fact]
public async Task ServerArray_contains_local_uri_and_configured_peers_after_start()
{
var pkiRoot = Path.Combine(Path.GetTempPath(), $"otopcua-pki-{Guid.NewGuid():N}");
try
{
var started = await OpcUaHostStart.StartAsync(
port => new OpcUaApplicationHost(
new OpcUaApplicationHostOptions
{
ApplicationName = "OtOpcUa.UnitTest",
ApplicationUri = "urn:OtOpcUa.UnitTest.NodeA",
OpcUaPort = port,
PublicHostname = "127.0.0.1",
PkiStoreRoot = pkiRoot,
PeerApplicationUris = new[] { "urn:OtOpcUa.UnitTest.NodeB" },
},
NullLogger<OpcUaApplicationHost>.Instance),
() => new StandardServer(), CancellationToken.None);
await using var host = started.Host;
var server = started.Server;
var serverArray = server.CurrentInstance.ServerObject.ServerArray.Value;
serverArray.ShouldNotBeNull();
serverArray.ShouldContain("urn:OtOpcUa.UnitTest.NodeA");
serverArray.ShouldContain("urn:OtOpcUa.UnitTest.NodeB");
}
finally
{
if (Directory.Exists(pkiRoot)) Directory.Delete(pkiRoot, recursive: true);
}
}
}