Better QA endpoints

[jimaek]

The issue keeps coming up. Even reliable servers keep failing the QA test because of weirdness from the selected root-servers

root@globalping-probe:~# curl ipinfo.io
{
  "ip": "143.110.217.4",
  "city": "Toronto",
  "region": "Ontario",
  "country": "CA",
  "loc": "43.5272,-79.6617",
  "org": "AS14061 DigitalOcean, LLC",
  "postal": "L5K",
  "timezone": "America/Toronto",
  "readme": "https://ipinfo.io/missingauth"
root@globalping-probe:~# ping k.root-servers.net
PING k.root-servers.net (193.0.14.129) 56(84) bytes of data.
64 bytes from k.root-servers.net (193.0.14.129): icmp_seq=1 ttl=46 time=325 ms
64 bytes from k.root-servers.net (193.0.14.129): icmp_seq=3 ttl=46 time=324 ms
64 bytes from k.root-servers.net (193.0.14.129): icmp_seq=4 ttl=46 time=324 ms
^C
--- k.root-servers.net ping statistics ---
4 packets transmitted, 3 received, 25% packet loss, time 3030ms
rtt min/avg/max/mdev = 323.883/324.415/325.111/0.514 ms

We should either select a different group of root servers or try to find better endpoints.

https://root-servers.org/

[jimaek]

Need to test a few more root-servers and maybe also use 192.175.48.1

Blocked by jsdelivr/globalping#354

[jimaek]

L server unstable jsdelivr/globalping-hwprobe#21

[Albonycal]

Why not use a set of popular websites like google.com 1.1.1.1 apple.com etc. like RIPE ATLAS uses?

[jimaek]

Because popular sites are blocked in many countries, e.g. google is blocked in China, we need very stable endpoints that would never get banned in any country. This rules out most American companies and limits us to organizations like root-servers