X-Git-Url: https://git.exim.org/users/jgh/exim.git/blobdiff_plain/b536a578fbabdc9d39da53d54a8d7700ba537431..78a78accf3deee2bbde619882598a192cb0167c8:/test/scripts/1990-TCP-Fast-Open/1990

diff --git a/test/scripts/1990-TCP-Fast-Open/1990 b/test/scripts/1990-TCP-Fast-Open/1990
index ec8e32c8f..1fc4682aa 100644
--- a/test/scripts/1990-TCP-Fast-Open/1990
+++ b/test/scripts/1990-TCP-Fast-Open/1990
@@ -26,6 +26,15 @@ sudo perl
 system ("tc qdisc add dev lo root netem delay 50ms");
 ****
 #
+#
+# Disable the TFO blackhole detection, as we seem to be running foul of it.
+# If bitten, we see the expected EINPROGRESS for sendto, yet no TFO cookie
+# option on the SYN.
+#
+sudo perl
+system ("[ -e /proc/sys/net/ipv4/tcp_fastopen_blackhole_timeout_sec ] && echo 0 > /proc/sys/net/ipv4/tcp_fastopen_blackhole_timeout_sec");
+****
+#
 # First time runs will see a TFO request option only; subsequent
 # ones should see the TFO cookie and fast-output SMTP banner
 # (currently on a separate packet after the server SYN,ACK but before
@@ -66,6 +75,7 @@ sleep 3
 #
 sudo perl
 system ("tc qdisc delete dev lo root");
+system ("[ -e /proc/sys/net/ipv4/tcp_fastopen_blackhole_timeout_sec ] && echo 3600 > /proc/sys/net/ipv4/tcp_fastopen_blackhole_timeout_sec");
 ****
 #
 killdaemon