bug#40665: 28.0.50; tls hang on local ssl

[Derek Zhou]

Derek Zhou writes:
>
> With emacs-26. maybe I should just use emacs-27 from now on.
> emacs-27 don't have this indefinite stall, however, it still stalls for
> a few seconds. The network is not that slow; it feels like something
> wasn't happening in time and was only being triggered later by some
> fallback mechanism.
>
Robert,

One of the website that has strange stall is https://www.opensource.com
It loads in sub-second in w3m, curl or wget. However, I have
multi-second stall in emacs-27. Can you repo?

Derek