Difficulty with Custom Middleware Order in ASP.NET Core 7 Causing 404 Errors
I recently switched to I'm maintaining legacy code that I'm working on a project and hit a roadblock. I'm working with unexpected 404 errors in my ASP.NET Core 7 application when using custom middleware. I have two middleware components: one for authentication and another for logging requests. I intended for the authentication middleware to run before the logging middleware, but it seems like the request is not being authenticated properly, leading to requests hitting the logging middleware without being authenticated first. Here's the configuration in `Startup.cs`: ```csharp public void Configure(IApplicationBuilder app, IWebHostEnvironment env) { app.UseAuthentication(); // Authentication Middleware app.UseMiddleware<LoggingMiddleware>(); // Custom Logging Middleware app.UseRouting(); app.UseAuthorization(); app.UseEndpoints(endpoints => { endpoints.MapControllers(); }); } ``` In my `LoggingMiddleware`, I log the request path and status code: ```csharp public class LoggingMiddleware { private readonly RequestDelegate _next; public LoggingMiddleware(RequestDelegate next) { _next = next; } public async Task InvokeAsync(HttpContext context) { await _next(context); Console.WriteLine($"Request Path: {context.Request.Path}, Status Code: {context.Response.StatusCode}"); } } ``` I also have a custom authentication handler that seems to be working correctly in isolation. However, when I make requests to protected routes, I always get a 404 response, and the logging middleware correctly logs the request path without any authentication happening. I've tried moving the order of middleware and adjusting the authentication setup but nothing seems to resolve the scenario. The behavior I get in the logs is simply the 404 without further details. I've ensured that the routes are correctly set up and that the authentication scheme is properly registered in `ConfigureServices`. Any guidance on what might be going wrong here would be greatly appreciated. I'm working in a macOS environment. Any suggestions would be helpful. This is part of a larger web app I'm building. Any advice would be much appreciated.