# HG changeset patch
# User Kim Alvefur <zash@zash.se>
# Date 1643555062 -3600
# Node ID ca8453129ade1fd76161dbb9ea5c5b6a7ebd2413
# Parent  f590058d8d992da80bcf4938c81c1ee477f0fcb0
util.prosodyctl.check: Fix A/AAAA check for proxy65 and http

When there are no records to return the return value from dns.lookup()
might be nil or might be a table containing zero records, depending on
which DNS library is used

diff -r f590058d8d99 -r ca8453129ade util/prosodyctl/check.lua
--- a/util/prosodyctl/check.lua	Sun Jan 30 13:16:30 2022 +0100
+++ b/util/prosodyctl/check.lua	Sun Jan 30 16:04:22 2022 +0100
@@ -608,8 +608,8 @@
 			local function check_address(target)
 				local A, AAAA = dns.lookup(idna.to_ascii(target), "A"), dns.lookup(idna.to_ascii(target), "AAAA");
 				local prob = {};
-				if use_ipv4 and not A then table.insert(prob, "A"); end
-				if use_ipv6 and not AAAA then table.insert(prob, "AAAA"); end
+				if use_ipv4 and not (A and #A > 0) then table.insert(prob, "A"); end
+				if use_ipv6 and not (AAAA and #AAAA > 0) then table.insert(prob, "AAAA"); end
 				return prob;
 			end