refactor(AuthClient): Hochgestuft auf 1.3.3

- Hinzugefügt: `TryStartConnectionAsync`-Methode zur Durchführung von Verbindungsversuchen mit Wiederholungslogik.
- `StartAsync` aktualisiert, um wiederholt zu versuchen, die Verbindung herzustellen, bis sie erfolgreich ist oder `RetryDelay` erschöpft ist.

DigitalData.Auth.Client/AuthClient.cs

@@ -28,7 +28,19 @@ public class AuthClient : IAuthClient, IHostedService
 
         _connection.On<string, string, string>(nameof(ReceivePublicKeyAsync), ReceivePublicKeyAsync);
 
-        _connection.Reconnected += async cnnId => await GetAllPublicKeysAsync();
+        _connection.Reconnected += async cnnId =>
+        {
+            _logger?.LogInformation("Auth-client reconnected. Number of connection attempts {nOfAttempts}.", _nOfAttempts);
+            await GetAllPublicKeysAsync();
+            _nOfAttempts = 0;
+        };
+
+        _connection.Reconnecting += (ex) =>
+        {
+            logger?.LogError(ex, "Auth-client disconnected. Attempt to reconnect every {time} seconds.", _params.RetryDelay!.Value.TotalSeconds);
+            _nOfAttempts += 1;
+            return Task.CompletedTask;
+        };
 
         _logger = logger;
     }
@@ -39,11 +51,43 @@ public class AuthClient : IAuthClient, IHostedService
 
     public async Task StartAsync(CancellationToken cancellationToken = default)
     {
-        await _connection.StartAsync(cancellationToken);
+        while(!await TryStartConnectionAsync(cancellationToken))
+        {
+            if (_params.RetryDelay is not null)
+                await Task.Delay(_params.RetryDelay.Value.Milliseconds, cancellationToken);
+            else
+                return;
+        }
+        
         IsConnected = true;
         await GetAllPublicKeysAsync();
     }
 
+    private int _nOfAttempts = 0;
+
+    private async Task<bool> TryStartConnectionAsync(CancellationToken cancellationToken = default)
+    {
+        try
+        {
+            _nOfAttempts += 1;
+            await _connection.StartAsync(cancellationToken);
+            _logger?.LogInformation("Auth-client connection successful. Number of connection attempts {nOfAttempts}.", _nOfAttempts);
+            _nOfAttempts = 0;
+            return true;
+        }
+        catch(HttpRequestException ex)
+        {
+            if(_nOfAttempts < 2)
+            {
+                if (_params.RetryDelay is null)
+                    _logger?.LogError(ex, "Auth-client connection failed. {message}", ex.Message);
+                else
+                    _logger?.LogError(ex, "Auth-client connection failed and will be retried every {time} seconds. The status of being successful can be followed from the information logs.\n{message}", _params.RetryDelay.Value.TotalSeconds, ex.Message);
+            }
+            return false;
+        }
+    }
+
     public async Task StopAsync(CancellationToken cancellationToken)
     {
         await _connection.StopAsync(cancellationToken);

DigitalData.Auth.Client/ClientParams.cs

@@ -7,39 +7,30 @@ public class ClientParams
 {
     public string Url { get; set; } = string.Empty;
 
-    private readonly Lazy<IRetryPolicy?> _lazyRetryPolicy;
-
     /// <summary>
     /// Controls when the client attempts to reconnect and how many times it does so.
     /// </summary>
-    public IRetryPolicy? RetryPolicy => _lazyRetryPolicy.Value;
+    public IRetryPolicy? RetryPolicy { get; private set; }
 
-    /// <summary>
+    private TimeSpan? _retryDelay;
-    /// To simplify the assignment of <seealso cref="RetryPolicy"/>
-    /// </summary>
-    public Func<RetryContext, TimeSpan?>? NextRetryDelay { get; set; }
 
     /// <summary>
     /// To be able to serilize the simple <seealso cref="RetryPolicy"/>
     /// </summary>
-    public TimeSpan? RetryDelay { get; set; }
+    public TimeSpan? RetryDelay
+    {
+        get => _retryDelay;
+        set
+        {
+            RetryPolicy = new RetryPolicy(ctx => RetryDelay);
+            _retryDelay = value;
+        }
+    }
 
     public event ClientEvent OnPublicKeyReceived = ClientEvents.UpdatePublicKeys;
 
     internal void TriggerOnPublicReceivedEvent(AuthClient client, string issuer, string audience, string key, ILogger? logger = null)
         => OnPublicKeyReceived(client, issuer, audience, key, logger);
 
-    public ClientParams()
-    {
-        _lazyRetryPolicy = new(() =>
-        {
-            if (RetryDelay is not null)
-                return new RetryPolicy(ctx => RetryDelay);
-            else if(NextRetryDelay is not null)
-                return new RetryPolicy(NextRetryDelay);
-            return null;
-        });
-    }
-
     public List<ClientPublicKey> PublicKeys { get; set; } = new();
 }

DigitalData.Auth.Client/DigitalData.Auth.Client.csproj

@@ -5,7 +5,7 @@
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
     <PackageId>DigitalData.Auth.Client</PackageId>
-    <Version>1.2.1.1</Version>
+    <Version>1.3.3</Version>
     <Description>DigitalData.Auth.Client is a SignalR-based authentication client that enables applications to connect to a central authentication hub for real-time message exchange. It provides seamless connection management, automatic reconnection (RetryPolicy), and event-driven communication (ClientEvents). The package includes dependency injection support via DIExtensions, allowing easy integration into ASP.NET Core applications. With built-in retry policies and secure message handling, it ensures a reliable and scalable authentication client for real-time authentication workflows.</Description>
     <Company>Digital Data GmbH</Company>
     <Product>Digital Data GmbH</Product>
@@ -14,8 +14,8 @@
     <PackageIcon>auth_icon.png</PackageIcon>
     <RepositoryUrl>http://git.dd:3000/AppStd/DigitalData.Auth</RepositoryUrl>
     <PackageTags>Digital Data Auth Authorization Authentication</PackageTags>
-    <AssemblyVersion>1.2.1.1</AssemblyVersion>
+    <AssemblyVersion>1.3.3</AssemblyVersion>
-    <FileVersion>1.2.1.1</FileVersion>
+    <FileVersion>1.3.3</FileVersion>
   </PropertyGroup>
 
   <ItemGroup>

src/DigitalData.Auth.API/DigitalData.Auth.API.csproj

@@ -4,9 +4,9 @@
     <TargetFramework>net8.0</TargetFramework>
     <Nullable>enable</Nullable>
     <ImplicitUsings>enable</ImplicitUsings>
-    <Version>1.0.0</Version>
+    <Version>1.1.0</Version>
-    <AssemblyVersion>1.0.0</AssemblyVersion>
+    <AssemblyVersion>1.1.0</AssemblyVersion>
-    <FileVersion>1.0.0</FileVersion>
+    <FileVersion>1.1.0</FileVersion>
   </PropertyGroup>
 
   <ItemGroup>