Re: Asynchronous DNS

[Paul Eggert]

Alain Schneble wrote:
> But the async-dns implementation that Lars provided uses another
> approach instead: it polls by calling gai_error (succeed, failed, in
> progress, ...)  repeatedly from wait_reading_process_output.

You're ahead of me, since I haven't read the implementation. From what you say, 
it appears that Emacs needs to cancel DNS requests that it thinks are so old 
that the answer is not likely to be useful. Presumably this could be done just 
before calling gai_error, by calling gai_cancel on the old requests.