bug#49449: 28: TLS connection never gets to "open" stage

[Mattias Engdegård]

>  The problem only seems to occur on Macos, so
> it'd be interesting to find out why it doesn't happen on Linux...

Now I've had access to a Linux machine, and it seems that it works because it 
has getaddrinfo_a (async DNS lookup) so the path taken is different. If 
HAVE_GETADDRINFO_A is #undef'ed, it seems to behave like macOS and fail in the 
same way if busy-waiting for one second after the url-http call. Can you 
confirm?