C# - Difficulty in Implementing a Custom Exception Filter for an HttpClient
I've been struggling with this for a few days now and could really use some help. Does anyone know how to I'm maintaining legacy code that I've been struggling with this for a few days now and could really use some help..... I've been banging my head against this for hours. I'm working on a .NET 6 application where I need to implement a custom exception filter that catches specific exceptions thrown by `HttpClient`. I want to log certain exceptions and rethrow others, but I'm running into issues where my filter seems to be bypassed for some exceptions. Here's a simplified version of what I've implemented so far: ```csharp public class CustomHttpClient { private readonly HttpClient _httpClient; public CustomHttpClient(HttpClient httpClient) { _httpClient = httpClient; } public async Task<string> GetDataAsync(string url) { try { var response = await _httpClient.GetAsync(url); response.EnsureSuccessStatusCode(); return await response.Content.ReadAsStringAsync(); } catch (HttpRequestException ex) { HandleHttpRequestException(ex); throw; // Rethrow if needed } } private void HandleHttpRequestException(HttpRequestException ex) { if (ex.StatusCode == HttpStatusCode.NotFound) { Console.WriteLine("Resource not found: " + ex.Message); } else if (ex.StatusCode == HttpStatusCode.InternalServerError) { Console.WriteLine("Server error occurred: " + ex.Message); } else { // Log other unexpected exceptions Console.WriteLine("Unhandled exception: " + ex.Message); } } } ``` When I call `GetDataAsync` with a URL that returns a 404 error, I see the expected log message. However, if the server returns a 500 error, the `HandleHttpRequestException` method is called, but the exception is not logged properly, and I see a message saying "Unhandled exception: ...". Additionally, I don't understand why certain exceptions are not being caught at all. I've verified that the `HttpClient` instance is correctly configured and that I'm awaiting the `GetAsync` call. Could it be that the `HttpClient` is throwing different types of exceptions that I'm not accounting for? Is there a better pattern or best practice for handling these exceptions in an `HttpClient` context? Any insights or suggestions would be greatly appreciated! How would you solve this? What are your experiences with this? Has anyone else encountered this? Thanks for any help you can provide! This is for a desktop app running on Linux. Any feedback is welcome! What are your experiences with this? I recently upgraded to C# stable. Any pointers in the right direction?