bug#47431: Process Whois connection broken by remote peer.

[Gregory Heytings]

> > > > IOW, without a built-in list, each whois query would create two 
> > > > requests, one to whois.iana.org, and one to the actual whois server.
> > >
> > > I don't see any problems with that, do you?
> >
> > In principle, I don't see any problems.  But I seem to recall that RMS 
> > dislikes solutions that make unnecessary network connections, or IOW 
> > that avoidable network connections should be avoided.
> >
> > If you agree on the general design, I'd be happy to implement it.
>
> I don't see a problem, no.  We frequently make network connections when 
> necessary.
>
> > Possibly with a cache to mitigate the above problem.
>
> I'd wait with caching until we see a performance problem.  It isn't like 
> people are expected to invoke this command many times in a row.

I think you misunderstood what I meant.  The idea would be to cache the 
replies from the whois.iana.org server, not those of the final whois 
server.  IOW, the idea would be to dynamically build a local database 
instead of relying on a hard-coded list.