'SoapCore - How to respond with custom HTTP status codes for certain Exceptions?

I'm using SoapCore for a SOAP web service using .NET 5. Everything works great, but I can't seem to figure out how to intercept a thrown exception in order to respond with a custom HTTP status code.

What am I missing?

What I've tried

So far, just providing a custom implementation of ISoapMessageProcessor, registering it in Startup.cs like this:

public void ConfigureServices(IServiceCollection services)
{
    services.AddSoapCore();
    services.TryAddSingleton<ISoapMessageProcessor, SoapMessageProcessor>();
    ...
}

But this seems to be triggered BEFORE the pipeline reaches my endpoints (and services). However, given the bulk of the exceptions I'd like to handle - by sending responses with custom HTTP Status Codes (not just 500) - are thrown from my services supporting my endpoints, this doesn't do me much good.

Is there a hook I can use that would get me access to modify the HttpResponse AFTER it has failed in a given endpoint/service?

soapcore


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Source: Stack Overflow

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