ASP.NET Core by Patrik

Chaining Multiple DelegatingHandlers

Multiple DelegatingHandlers can be chained to create a pipeline:

services.AddTransient<LoggingHandler>();
services.AddTransient<AuthenticationHandler>();
services.AddHttpClient("ChainedClient")
        .AddHttpMessageHandler<LoggingHandler>()
        .AddHttpMessageHandler<AuthenticationHandler>();

In this setup, LoggingHandler processes the request first, followed by AuthenticationHandler. The order of registration determines the sequence of execution.

HandlerChaining

Pipeline

Middleware

RequestProcessing

AspNetCore