bin/59191: RDAP client missing in base

[logix%foobar.franken.de@localhost]

>Number:         59191
>Category:       bin
>Synopsis:       RDAP client missing in base
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    bin-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Mar 17 17:20:00 +0000 2025
>Originator:     Harold Gutch
>Release:        all
>Organization:
The Whowas Foundation
>Environment:
>Description:
ICANN recently sunset their whois service[1] and replaced it with RDAP.  As such there is currently no tool in base that can query data from ICANN that previously was available via whois(1) from whois.icann.org.

[1] https://www.icann.org/en/announcements/details/icann-update-launching-rdap-sunsetting-whois-27-01-2025-en
>How-To-Repeat:
whois -h whois.icann.org <whatever>
>Fix:
Make Rust work on all platforms and import the official RDAP client.

Alternatively:  Import JSON parser in base (e.g., jq), then write a client that downloads https://data.iana.org/rdap/dns.json and parses the JSON - possibly adding all this functionality to whois(1).