httpx: Connect Timeout confusion

Hi!

I’m quite confused about Connect Timeout. I observed that I have some applications that happens to throw a ConnectionTimeout exception in httpx/backends/asyncio.py, in this part (lines 201, 202):

except asyncio.TimeoutError:
	raise ConnectTimeout()

What I think is strange is that, my applications are monitored with NewRelic and Microsoft Application Insights, and although they say that a request took something like 5s, I can find the request in the origin and it took just some milliseconds.

So I think my question here is this: is there something in the origin application that can cause this timeout? Maybe some blocking code? Or wrong AsyncClient creation?

Any help would be appreciated, thanks!

Obs: my applications are developed using FastAPI