Allow either UDP or TCP queries in flight in statistics test

The "active sockets" and "queries in progress" assertions previously
required exactly one extra UDP/IPv4 socket and exactly one UDP query in
progress, with no TCP counterpart.  That shape held only because the
broken TCP-fallback path left the resolver retrying UDP indefinitely.

With the fix in place, after two UDP timeouts to the same authority the
resolver legitimately escalates to TCP, and a stats snapshot taken
during recursion may catch the in-flight query on either transport.
Count the UDP and TCP counters together so the test reflects the new
correct behaviour.

Assisted-by: Claude:claude-opus-4-7

diff --git a/bin/tests/system/statistics/tests.sh b/bin/tests/system/statistics/tests.sh
index dab0f28a4900ce7e9700eb28a1563a0417a5fd6a..71187a5fe3c77f98cd31b0b7586709887e0a9376 100644 (file)
--- a/bin/tests/system/statistics/tests.sh
+++ b/bin/tests/system/statistics/tests.sh
@@ -122,18 +122,24 @@ n=$((n + 1))
 
 ret=0
 echo_i "verifying active sockets output in named.stats ($n)"
-nsock1nstat=$(grep "UDP/IPv4 sockets active" $last_stats | awk '{print $1}')
-[ $((nsock1nstat - nsock0nstat)) -eq 1 ] || ret=1
+# After repeated UDP timeouts to the same authoritative server, the
+# resolver switches to TCP, so the in-flight socket may be either UDP
+# or TCP.  Require at least one extra active socket of either kind.
+nsock1udp=$(grep "UDP/IPv4 sockets active" $last_stats | awk '{print $1}')
+nsock1tcp=$(grep "TCP/IPv4 sockets active" $last_stats | awk '{print $1}')
+[ $((${nsock1udp:-0} + ${nsock1tcp:-0} - nsock0nstat)) -ge 1 ] || ret=1
 if [ $ret != 0 ]; then echo_i "failed"; fi
 status=$((status + ret))
 n=$((n + 1))
 
-# there should be 1 UDP and no TCP queries.  As the TCP counter is zero
-# no status line is emitted.
+# There should be 1 query in progress.  After repeated UDP timeouts the
+# resolver switches to TCP, so depending on which retry attempt the
+# snapshot captures the query may be counted as either UDP or TCP.
 ret=0
 echo_i "verifying queries in progress in named.stats ($n)"
-grep "1 UDP queries in progress" $last_stats >/dev/null || ret=1
-grep "TCP queries in progress" $last_stats >/dev/null && ret=1
+udp_in_progress=$(awk '/UDP queries in progress/ {print $1}' $last_stats)
+tcp_in_progress=$(awk '/TCP queries in progress/ {print $1}' $last_stats)
+[ $((${udp_in_progress:-0} + ${tcp_in_progress:-0})) -eq 1 ] || ret=1
 if [ $ret != 0 ]; then echo_i "failed"; fi
 status=$((status + ret))
 n=$((n + 1))