ASP.NET Core by Ken

HTTP Communication in ASP.NET Core

ASP.NET Core provides a rich set of tools for handling HTTP communication—both inbound and outbound. This root Snipp focuses on outbound HTTP requests using HttpClient, IHttpClientFactory, DelegatingHandler, and related patterns. These features are critical for building resilient services that interact with external APIs and microservices.

Topics covered under this root:

  • Configuring and using HttpClient with IHttpClientFactory
  • Creating and chaining DelegatingHandlers
  • Implementing cross-cutting concerns (e.g., logging, retries, authentication)
  • Best practices for performance, resilience, and testing
  • Distinction between client-side handlers and server-side middleware

This section is essential for developers building cloud-native apps, microservices, or any service that consumes external APIs.

HttpClient
ASPNetCore
Networking
Resilience
Microservices
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ASP.NET Core provides robust support for making outbound HTTP requests using HttpClient, often via the IHttpClientFactory. This section covers advanced features for managing these requests, including the use of DelegatingHandler for building custom request/response pipelines. These handlers enable cross-cutting concerns like logging, authentication, and retries in a modular and testable way.

This section includes:

  • Introduction to DelegatingHandler
  • Creating and registering custom handlers
  • Chaining multiple handlers
  • Practical use cases
  • Differences between DelegatingHandler and middleware
  • Testing strategies for handlers

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