# Early-pipelining, with TFO
#
#
# Packet delays so we can see TFO operational in packet captures
# 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 ("[ -e /proc/sys/net/ipv4/tcp_fastopen_blackhole_timeout_sec ] && echo 0 > /proc/sys/net/ipv4/tcp_fastopen_blackhole_timeout_sec");
****
#
#
exim -bd -DSERVER=server -oX PORT_D
****
#
# No early-pipe cache yet.  Run one through to prime it;
# this should not use early-pipe despite both the client & server being enabled.
# Should also prime the TFO cookie cache.
exim nocache@test.ex
Subject: tfo test

Testing
****
exim -q
****
exim -DNOTDAEMON -DSERVER=server -q
****
#
#
#
# Having primed the cache, this one should use it.
exim hascache@test.ex
Subject: tfo test 2

Testing
****
exim -q
****
exim -DNOTDAEMON -DSERVER=server -q
****
#
#
killdaemon
#
# Again, with CHUNKING
sudo rm DIR/spool/db/misc
exim -bd -DSERVER=server -DOPT=* -oX PORT_D
****
#
exim nocache@test.ex
Subject: tfo test 3

Testing
****
exim -q
****
exim -DNOTDAEMON -DSERVER=server -q
****
exim chunking@test.ex
Subject: tfo test 4

Testing
****
exim -q
****
exim -DNOTDAEMON -DSERVER=server -q
****
#
#
killdaemon
#
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");
****
#
no_msglog_check