Testsuite: workaround TFO blackhole detection

[exim.git] / test / scripts / 4058-pipe-conn-tfo / 4058

diff --git a/test/scripts/4058-pipe-conn-tfo/4058 b/test/scripts/4058-pipe-conn-tfo/4058
index 3a388a2d924f84e39f30b8e235dcdb47cd543478..f31ef8d1c4a900c73c619c5208d08a5f28bdd965 100644 (file)
--- a/test/scripts/4058-pipe-conn-tfo/4058
+++ b/test/scripts/4058-pipe-conn-tfo/4058
@@ -2,13 +2,12 @@
 #
 #
 # Packet delays so we can see TFO operational in packet captures
-sudo perl
-system ("tc qdisc add dev lo root netem delay 50ms");
-****
-#
 # Wipe any stored TFO cookie, to start from known state.
+# Disable TFO blackhole-detection as we seem to be running afoul of that
 sudo perl
+system ("tc qdisc add dev lo root netem delay 50ms");
 system ("ip tcp_metrics delete 127.0.0.1");
+system ("echo 0 > /proc/sys/net/ipv4/tcp_fastopen_blackhole_timeout_sec");
 ****
 #
 #
@@ -73,6 +72,7 @@ killdaemon
 #
 sudo perl
 system ("tc qdisc delete dev lo root");
+system ("echo 3600 > /proc/sys/net/ipv4/tcp_fastopen_blackhole_timeout_sec");
 ****
 #
 no_msglog_check