haproxy/reg-tests/log/wrong_ip_port_logging.vtc

# commit d02286d
# BUG/MINOR: log: pin the front connection when front ip/ports are logged
#
# Mathias Weiersmueller reported an interesting issue with logs which Lukas
# diagnosed as dating back from commit 9b061e332 (1.5-dev9). When front
# connection information (ip, port) are logged in TCP mode and the log is
# emitted at the end of the connection (eg: because %B or any log tag
# requiring LW_BYTES is set), the log is emitted after the connection is
# closed, so the address and ports cannot be retrieved anymore.
#
# It could be argued that we'd make a special case of these to immediately
# retrieve the source and destination addresses from the connection, but it
# seems cleaner to simply pin the front connection, marking it "tracked" by
# adding the LW_XPRT flag to mention that we'll need some of these elements
# at the last moment. Only LW_FRTIP and LW_CLIP are affected. Note that after
# this change, LW_FRTIP could simply be removed as it's not used anywhere.
#
# Note that the problem doesn't happen when using %[src] or %[dst] since
# all sample expressions set LW_XPRT.

#REGTEST_TYPE=bug

varnishtest "Wrong ip/port logging"
feature ignore_unknown_macro

server s1 {
    rxreq
    delay 0.02
} -start

syslog Slg_1 -level notice {
    recv
    recv
    recv info
    expect ~ \"dip\":\"${h1_fe_1_addr}\",\"dport\":\"${h1_fe_1_port}.*\"ts\":\"[cC]D\",\"
} -start

haproxy h1 -conf {
    global
        log ${Slg_1_addr}:${Slg_1_port} local0

defaults
    log global
    timeout connect 3000
    timeout client 1
    timeout server  10000

frontend fe1
    bind "fd@${fe_1}"
    mode tcp
    log-format {\"dip\":\"%fi\",\"dport\":\"%fp\",\"c_ip\":\"%ci\",\"c_port\":\"%cp\",\"fe_name\":\"%ft\",\"be_name\":\"%b\",\"s_name\":\"%s\",\"ts\":\"%ts\",\"bytes_read\":\"%B\"}
    default_backend    be_app

backend be_app
    server app1 ${s1_addr}:${s1_port}
} -start

client c1 -connect ${h1_fe_1_sock} {
    txreq -url "/"
    expect_close
} -run

syslog Slg_1 -wait