X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/d5b80e59458182b2d557a929a18cb8c70cd56b68..ee549a2ed04164407f4f897be3bf545f32579c5c:/test/scripts/4027-TFO-socks/4027

diff --git a/test/scripts/4027-TFO-socks/4027 b/test/scripts/4027-TFO-socks/4027
index 533021cbf..a7412aecd 100644
--- a/test/scripts/4027-TFO-socks/4027
+++ b/test/scripts/4027-TFO-socks/4027
@@ -1,8 +1,56 @@
 # socks5 proxy on smtp transport, TCP Fast Open
 #
+# NOTE: ensure that TFO is fully enabled in the kernel.
+# For linux: sysctl net.ipv4.tcp_fastopen=3
+# 
 munge loopback
 #
 #
+# 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 ("ip tcp_metrics delete 127.0.0.1");
+system ("[ -e /proc/sys/net/ipv4/tcp_fastopen_blackhole_timeout_sec ] && echo 0 > /proc/sys/net/ipv4/tcp_fastopen_blackhole_timeout_sec");
+****
+#
+# TFO both clients and server, no cookie yet
+server -tfo PORT_D
+<<\x05\x01\x00
+>>\x05\x00
+<<\x05\x01\x00\x01\x7f\x00\x00\x01\x04\xc8
+>>\x05\x00\x00\x01\x7f\x00\x00\x01\xbe\xef
+220 Connected OK
+EHLO
+250-server id
+250
+MAIL FROM
+250
+RCPT TO
+250
+DATA
+354 go ahead
+.
+250 accepted OK
+QUIT
+250 bye
+****
+#
+#
+exim -odi -bs -DOPT=
+ehlo test.ex
+mail from:<>
+rcpt to:<user_tfo@test.ex>
+data
+Date: Fri, 17 Dec 2004 14:35:01 +0100
+Subject: message should be sent
+
+connection trying TFO via proxy; no cookie yet
+.
+quit
+****
+#
+#
+#
 # TFO client, not server
 server PORT_D
 <<\x05\x01\x00
@@ -79,5 +127,10 @@ via null-auth proxy
 quit
 ****
 #
+millisleep 500
+#
+sudo perl
+system ("[ -e /proc/sys/net/ipv4/tcp_fastopen_blackhole_timeout_sec ] && echo 3600 > /proc/sys/net/ipv4/tcp_fastopen_blackhole_timeout_sec");
+****
 #
 # Ends