Replace Google DNS servers with 127.0.0.1 in
test-dns-setserver-when-querying.
Refs: https://github.com/nodejs/node/issues/25664
PR-URL: https://github.com/nodejs/node/pull/25694
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>
Reviewed-By: Khaidi Chu <i@2333.moe>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Fix this issue follow these two points:
1. Keep track of how many queries are currently open. If `setServers()`
is called while there are open queries, error out.
2. For `Resolver` instances, use option 1. For dns.setServers(), just
create a fresh new default channel every time it is called, and then
set its servers list.
PR-URL: https://github.com/nodejs/node/pull/14891
Fixes: https://github.com/nodejs/node/issues/14734
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
