A libcurl-using application that resolves a host name using DNS-over-HTTPS (DoH).
This code uses POST requests unconditionally for this.
make
sudo make install
doh [options] host [DoH URL]
If DoH URL is left out, the Cloudflare DoH server will be used. See also list of public servers
$ doh www.example.com
www.example.com from https://dns.cloudflare.com/dns-query
TTL: 2612 seconds
A: 93.184.216.34
AAAA: 2606:2800:0220:0001:0248:1893:25c8:1946
$ doh www.yahoo.com https://dns.google/dns-query
www.yahoo.com from https://dns.google/dns-query
TTL: 36 seconds
A: 87.248.98.8
A: 87.248.98.7
AAAA: 2a00:1288:0110:001c:0000:0000:0000:0004
AAAA: 2a00:1288:0110:001c:0000:0000:0000:0003
CNAME: atsv2-fp.wg1.b.yahoo.com
CNAME: atsv2-fp.wg1.b.yahoo.com
