gemini says:
.NET Core provides a robust framework for handling networking, routing, and authentication in modern web applications and services. Here's how it addresses each of these areas:
Networking:
HttpClient: Provides a high-level API for sending HTTP requests and receiving HTTP responses. This is the primary way for .NET Core applications to interact with web services, APIs, and other resources over the network.
Sockets: Offers low-level access to network communication for scenarios where more control is needed, such as building custom protocols or interacting with non-HTTP services.
Kestrel: The default web server for ASP.NET Core applications. It's fast, lightweight, and designed to be cross-platform, making it suitable for running on Windows, Linux, and macOS.
gRPC: A high-performance, open-source RPC framework that can be used to build efficient communication between .NET Core services.
Routing:
ASP.NET Core Routing: A powerful and flexible routing system that allows you to define URLs for your web application's actions and resources. It supports:
Attribute Routing: Decorating your controller actions and Razor Pages with attributes to specify their URLs.
Convention-Based Routing: Defining routing templates that match URLs based on their structure and conventions.
Endpoint Routing: A newer, more performant approach that allows you to define endpoints directly, with full control over URL matching and middleware execution.
Authentication:
ASP.NET Core Identity: A membership system that provides features for managing user accounts, authentication, authorization, password management, and more. It supports various authentication providers, such as local accounts, social logins (Google, Facebook, etc.), and external identity providers (Azure AD, Okta, etc.).
Authentication Middleware: A set of middleware components that handle the authentication process, including:
Cookie Authentication: Stores user credentials in cookies and validates them on subsequent requests.
JWT Bearer Authentication: Validates JSON Web Tokens (JWT) provided by clients for authentication.
OAuth 2.0/OpenID Connect: Supports authentication using external identity providers through industry-standard protocols.
Additional Considerations:
HTTPS: .NET Core makes it easy to configure and enforce HTTPS to secure your web applications.
Authorization: In addition to authentication, .NET Core provides authorization mechanisms like role-based authorization, claims-based authorization, and policy-based authorization to control access to resources within your application.
Security Best Practices: It's important to follow security best practices when building .NET Core applications, such as input validation, error handling, and secure configuration to protect your application from attacks.
By combining these features, .NET Core provides a comprehensive solution for building secure, scalable, and high-performance web applications and services with robust networking, flexible routing, and various authentication mechanisms
