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

[Gregory Heytings]

> > [2] https://raw.githubusercontent.com/rfc1036/whois/next/tld_serv_list
>
> The list originates at whois.iana.org...  which is a server that seems 
> to respond to whois queries nicely.  So we could just update 
> whois-server-name to that?  And remove whois-server-tld.

That would be ideal/simpler, but whois.iana.org only contains information 
about the whois server to use for each TLD.  For instance whois -h 
whois.iana.org gnu.org tells you that the whois server to contact is 
whois.pir.org.  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.  IOW again, a whois request would become:

whois -h $(whois -h whois.iana.org DOMAIN | grep '^whois:' | cut -d: -f2) DOMAIN

Would that be acceptable?