Logstash beat input plugin ignoring "client_inactivity_timeout" value

Elastic Stack Logstash
1

In despite of setting "client_inactivity_timeout" value in config file logstash closing session from filebeat after 15 seconds of inactivity.

logstash-2.4.0
OEL 6.8 kernel: 3.8.13 - 118
Oracle JDK 1.8.0_101

input {
beats {
client_inactivity_timeout=>120
port => 5044
host => "127.0.0.1"
}
}

output {

 gelf {
    custom_fields => ['process','proc1']
    host => "10.1.1.15"
    port => 12201
    }

}

2

I found that client_inactivity_timeout option is never used in Logstash Input Beats. So you probably get closing because of your network of firewall settings.