The agent name is wrong and the agent address is really 'foo'

[DrEight]

[Enter feedback here]
In the documentation is specified the agent name as 'Edge Health Probes'. This is wrong the agent name is 'Edge Health Probe' without the S.
I also would say that the agent address is 'foo.mydomain.com' where foo is not a random name, but is really 'foo'.
This drove me crazy, because I thought it was in my code somewhere 'foo'. I wasted literally days.
It is a very bad idea to call an agent 'foo'.
So, please specify in the documentation that you have had a really bad idea, and the agent address is 'foo'

Document Details

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• ID: f35a0b39-ab2f-ba8a-0907-e0f3a6b69135
• Version Independent ID: 0e6c8267-a911-9c6b-0522-3ec96753b3ef
• Content: Azure Front Door - backend health monitoring
• Content Source: articles/frontdoor/front-door-health-probes.md
• Service: frontdoor
• GitHub Login: @duongau
• Microsoft Alias: duau

[SaiKishor-MSFT]

Thanks for the feedback! I have assigned the issue to the content author to investigate this and update the document as appropriate.

[duongau]

@DrEight could you please show us the logs that you're looking at that is showing the "foo" part that you're referring to. I reached out to our devs and was told no where in our code for the health probe does that name appears. Thank you.

[DrEight]

I don't have logs, I discovered the 'foo' agent attaching the debugger to the AppService behind the azure front door.
To solve the problem I created a middleware that ignore this call, and I can guarantee that it is called a lot.
This is my middleware actually in testing.
How can I help you more ?

public class IgnoreHealthProbe
    {
        private readonly RequestDelegate m_next;

        public IgnoreHealthProbe(RequestDelegate next)
        {
            m_next = next;
        }

        public async Task Invoke(HttpContext httpContext)
        {
            string host = httpContext.Request.Headers["X-Forwarded-Host"].ToSafeString();
            if (!string.IsNullOrWhiteSpace(host))
            {
                // the call that start with foo is from the agent 'Edge Health Probe'. We can ignore this call
                if (!host.ToLowerInvariant().StartsWith("foo")) 
                {
                    await m_next(httpContext);
                }
            }
            else
            {
                await m_next(httpContext);
            }

        }
    }

[duongau]

#reassign: jessie-jyy

[duongau]

@DrEight I have forwarded your information to our Dev team and they were not able to find any related information in the health probe code named "foo". If you need further assistance on this matter, please open a service request with our support to further investigate this with you. Thank you for your contribution, for now I will be archiving this issue. #please-close