Missing mark message on TCP destination in case of mark_mode(host_idle)

[mitzkia]

Using the following config syslog-ng OSE does not send "-- MARK --" messages to the destination.

@version: 3.7
options {
    mark_mode(host-idle);
    mark_freq(3);
};
source s_network_f5b2e69a6877439389c9e3286d1f37e9 {
    network(
      ip(127.0.0.1)
      log_iw_size(1)
      port(2001)
    );
};
destination d_network_db4d93c6b3664513a5282eef8f432d59 {
    network(
      "127.0.0.1"
      mark_mode(global)
      port(1212)
      throttle(1)
    );
};
log {
source(s_network_f5b2e69a6877439389c9e3286d1f37e9);
destination(d_network_db4d93c6b3664513a5282eef8f432d59);
flags(flow-control);
};

reproduction:
1, start listening on port 1212 (e.g): nc -lk 127.0.0.1 -p 1212
2, start syslog-ng using the above config
3, send messages to syslog-ng (e.g): bin/loggen --inet --rate=1 --size=200 --number=6 --interval=25 --active-connections=1 --quiet 127.0.0.1 2001
4, actual output:

<38>Jul 6 15:58:29 localhost prg00000[1234]: seq: 0000000000, thread: 0000, runid: 1436191109, stamp: 2015-07-06T15:58:29 PADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADD
<38>Jul 6 15:58:30 localhost prg00000[1234]: seq: 0000000001, thread: 0000, runid: 1436191109, stamp: 2015-07-06T15:58:30 PADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADD
<38>Jul 6 15:58:31 localhost prg00000[1234]: seq: 0000000002, thread: 0000, runid: 1436191109, stamp: 2015-07-06T15:58:31 PADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADD
<38>Jul 6 15:58:32 localhost prg00000[1234]: seq: 0000000003, thread: 0000, runid: 1436191109, stamp: 2015-07-06T15:58:32 PADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADD
<38>Jul 6 15:58:33 localhost prg00000[1234]: seq: 0000000004, thread: 0000, runid: 1436191109, stamp: 2015-07-06T15:58:33 PADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADD
<38>Jul 6 15:58:34 localhost prg00000[1234]: seq: 0000000005, thread: 0000, runid: 1436191109, stamp: 2015-07-06T15:58:34 PADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADD

expected output:
<38>Jul 6 15:57:58 localhost prg00000[1234]: seq: 0000000000, thread: 0000, runid: 1436191078, stamp: 2015-07-06T15:57:58 PADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADD
<38>Jul 6 15:57:59 localhost prg00000[1234]: seq: 0000000001, thread: 0000, runid: 1436191078, stamp: 2015-07-06T15:57:59 PADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADD
<46>Jul 6 15:57:59 tristram -- MARK --
<38>Jul 6 15:58:00 localhost prg00000[1234]: seq: 0000000002, thread: 0000, runid: 1436191078, stamp: 2015-07-06T15:58:00 PADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADD
<38>Jul 6 15:58:01 localhost prg00000[1234]: seq: 0000000003, thread: 0000, runid: 1436191078, stamp: 2015-07-06T15:58:01 PADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADD
<38>Jul 6 15:58:02 localhost prg00000[1234]: seq: 0000000004, thread: 0000, runid: 1436191078, stamp: 2015-07-06T15:58:02 PADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADD
<46>Jul 6 15:58:02 tristram -- MARK --

[deirf]

I know it. These functionality are different in your expectations and OSE. I read the documentations and comments in code and I think your expectations is not the same than there is in the documentation. Dst-idle and host-idle mark messages should be sent after first message incame because they are initialized in queue. The periodical mark mode is initialized in init function.