refactor: migrate OPC UA driver and browser to SDK 2.0

src/Drivers/ZB.MOM.WW.OtOpcUa.Driver.OpcUaClient.Browser/OpcUaClientDriverBrowser.cs

@@ -101,7 +101,7 @@ public sealed class OpcUaClientDriverBrowser : IDriverBrowser
                 sessionName: "OtOpcUa AdminUI Browse",
                 (uint)opts.SessionTimeout.TotalMilliseconds,
                 identity,
-                preferredLocales: null,
+                preferredLocales: default,
                 connectCts.Token).ConfigureAwait(false);
 
             try
@@ -224,8 +224,7 @@ public sealed class OpcUaClientDriverBrowser : IDriverBrowser
             return (OpcUaUserIdentityFactory.Build(resolved), null);
         }
 
-        var certificate = OpcUaUserIdentityFactory.LoadCertificate(resolved);
-        return (new UserIdentity(certificate), certificate);
+        return (OpcUaUserIdentityFactory.FromCertificate(resolved), null);
     }
 
     /// <summary>Select the endpoint matching the requested SecurityPolicy + SecurityMode pair.</summary>
@@ -240,7 +239,7 @@ public sealed class OpcUaClientDriverBrowser : IDriverBrowser
     {
         using var client = await DiscoveryClient.CreateAsync(
             appConfig, new Uri(url), DiagnosticsMasks.None, ct).ConfigureAwait(false);
-        var all = await client.GetEndpointsAsync(null, ct).ConfigureAwait(false);
+        var all = await client.GetEndpointsAsync(default, ct).ConfigureAwait(false);
 
         var wantedPolicy = MapPolicy(policy);
         var wantedMode = mode switch
@@ -250,11 +249,11 @@ public sealed class OpcUaClientDriverBrowser : IDriverBrowser
             OpcUaSecurityMode.SignAndEncrypt => MessageSecurityMode.SignAndEncrypt,
             _ => throw new ArgumentOutOfRangeException(nameof(mode)),
         };
-        var match = all.FirstOrDefault(e =>
+        var match = all.ToList().FirstOrDefault(e =>
             e.SecurityPolicyUri == wantedPolicy && e.SecurityMode == wantedMode);
         if (match is null)
         {
-            var advertised = string.Join(", ", all.Select(e =>
+            var advertised = string.Join(", ", all.ToList().Select(e =>
                 $"{ShortName(e.SecurityPolicyUri)}/{e.SecurityMode}"));
             throw new InvalidOperationException(
                 $"No endpoint at '{url}' matches SecurityPolicy={policy} + SecurityMode={mode}. " +
@@ -278,7 +277,7 @@ public sealed class OpcUaClientDriverBrowser : IDriverBrowser
 
     /// <summary>Render an OPC UA security-policy URI as its short suffix for diag messages.</summary>
     /// <param name="uri">Full policy URI to shorten.</param>
-    private static string ShortName(string uri) =>
+    private static string ShortName(string? uri) =>
         uri?.Substring(uri.LastIndexOf('#') + 1) ?? "(null)";
 }