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Service Registration  This configuration sets up JWT (JSON Web Token) Authentication and integrates Identity-based user lockout within a .NET 8 Web API. 1. JWT Authentication Setup: The code starts by adding authentication services to the builder.Services using JWT authentication. Here's a breakdown: Default Authentication Schemes: The default authentication scheme is set to JWT Bearer ( JwtBearerDefaults.AuthenticationScheme ). This means that JWT will be used as the primary mechanism to authenticate users. Both the DefaultAuthenticateScheme , DefaultScheme , and DefaultChallengeScheme are set to use JWT, ensuring that the app handles authentication and challenges using the same JWT scheme. JWT Bearer Options: options.SaveToken = true : This instructs the application to save the JWT token once validated. This can be useful for later processing or access within the application. Token Validation Parameters: These parameters define the rules for how the received JWT tokens shoul

Namespace and Imports The code begins by importing several libraries and namespaces essential for email sending, JWT token handling, and ASP.NET Identity, including: Microsoft.AspNetCore.Identity : For managing user identities in ASP.NET Core applications. Microsoft.AspNetCore.Mvc : Provides attributes like [ApiController] and [Route] , simplifying the API controller setup. MailKit and MimeKit : Used to compose and send emails, supporting SMTP clients. Microsoft.IdentityModel.Tokens , System.Security.Claims , System.IdentityModel.Tokens.Jwt : To handle JWT (JSON Web Tokens) for authentication. AccountController Class This class is responsible for user account management, including registration, email confirmation, and login. [ApiController] and [Route("[controller]")] These attributes define the class as an API controller and set the route pattern for the endpoints. Requests to this controller will follow the route pattern based on the controller name. Register Method The

Unit Testing Blazor Components with Moq and Bunit Unit testing in Blazor is essential to ensure that your components behave as expected. This article demonstrates how to effectively test Blazor components using Moq for mocking services and Bunit for rendering and interacting with components in a test environment. We’ll walk through various testing scenarios, including adding, fetching, updating, and deleting products in a Blazor application. Introduction to Bunit and Moq Bunit is a testing library designed for Blazor components. It allows you to render components in isolation and perform actions such as interacting with the UI, asserting the output, and verifying the behavior of the components. Moq is a popular .NET library for mocking dependencies in unit tests. It allows you to simulate the behavior of complex services and verify that your components interact with these services as expected. Testing Scenarios Let's explore several common scenarios where Bunit and Moq are used t

1. Product Controller Test Description  This class, ProductControllerTest , is a set of integration tests for the ProductController in a .NET Web API project. The tests are implemented using xUnit, a popular testing framework for .NET, and they utilize FluentAssertions for assertions and Newtonsoft.Json for JSON serialization and deserialization. The class uses IClassFixture to create a test fixture, which ensures that a single instance of the ProductWebApplicationFactory<Program> is used across all tests, enabling shared setup and teardown logic. Purpose The purpose of these tests is to ensure that the ProductController behaves correctly under various conditions. Each test method simulates an HTTP request to the API and verifies the response. This setup allows the tests to cover a range of scenarios, including retrieving products, handling cases where no products exist, and managing operations like creating, updating, and deleting products. Key Components HttpClient : The _c

  Description | Custom AuthenticationHandler This code defines a custom authentication handler for a .NET Web API using access tokens. The handler is implemented by the CustomAuthenticationHandler class, which inherits from AuthenticationHandler<AuthenticationSchemeOptions> . Here's a breakdown of its functionality: Namespace and Imports : The code is organized under the DemoAccessTokenAuthInWebApi.Scheme namespace and uses various namespaces for authentication, Entity Framework Core, logging, and security. Constructor : The constructor initializes the handler with necessary services such as options, logger, URL encoder, and an instance of AuthDbContext , which is used for database interactions. HandleAuthenticateAsync Method : This method handles the authentication logic: It retrieves the authorization header from the incoming request. If the header is missing, it returns an authentication failure result. The token is extracted, decoded, and parsed to retrieve the user ID.

Authentication Detailed Description Add Database Connection We start by setting up a database connection using Entity Framework Core. In this example, SQLite is used as the database provider. By specifying a connection string, we ensure that the application has a designated database file ( DemoDb.db ) where all data, including user and role information, will be stored and managed. Add Identity ASP.NET Core Identity is integrated to handle user authentication and authorization. This setup includes: User and Role Management: Configuring Identity to use default classes for users and roles. Entity Framework Integration: Specifying that Identity should utilize Entity Framework Core with our designated DbContext for managing user and role data. Role-Based Authorization: Enabling the application to support roles, which can be used to enforce access control throughout the application. Add JWT Authentic

Load Balancing Description   The provided code snippet demonstrates how to set up load balancing using YARP (Yet Another Reverse Proxy) in an ASP.NET Core application. The GetClusters method returns a list of cluster configurations, each defining how traffic is distributed among multiple destinations. Below is a detailed explanation focusing on the load balancing aspect. Method Overview The GetClusters method defines clusters, which are logical groups of destinations (service instances) that can handle incoming requests. Each cluster can have a unique load balancing policy to distribute traffic efficiently. Defining Clusters The method returns a list of ClusterConfig objects, each representing a cluster with specific settings and destinations. Product Cluster ClusterId : A unique identifier for the cluster, in this case, product-cluster . Destinations : A dictionary of destination configurations. Each destination has a unique key and an address. This cluster includes three destinati