How many connections can my server handle?

I have my server configured to support 50,000 connections. Currently I work with approximately 800 GPS gt06 devices and from time to time the Traccar application crashes and I receive the error:

 exceptionCaught() event was fired, and it reached at the tail of the pipeline. It usually means the last handler in the pipeline did not handle the exception. - Too many open files - IOException (...)

I have seen this error in other forum posts and it all comes down to the optimization settings: Optimization

but it does not match the number of devices that I have with my current configuration:

root@traccar-prod:~# cat /proc/$(pidof java)/limits | grep "open files"
Max open files            50000                50000                files

root@traccar-prod:~# ulimit -n
50000

in /etc/sysctl.conf :

vm.max_map_count = 250000
fs.file-max = 250000
net.ipv4.ip_local_port_range = 1024 65535

root@traccar-prod:~# cat /etc/systemd/system/traccar.service
[Unit]
Description=traccar
After=network.target

[Service]
Type=simple
WorkingDirectory=/opt/traccar
ExecStart=/opt/traccar/jre/bin/java -Xmx2G -jar tracker-server.jar conf/traccar.xml
SyslogIdentifier=traccar
SuccessExitStatus=143
LimitNOFILE=50000

It strikes me that when I am ready the connections continue to increase and seem to accumulate:

root@traccar-prod:~# netstat | grep ESTABLISHED | grep 5023 | wc -l
9357

any ideas to solve?

Have you configured a timeout?

hi Anton, thanks for the prompt reply. I don't have any timeout settings in my traccar.xml file, apparently the solution is there. How would this parameter be applied in my configuration?

[protocol].timeout

<entry key='gt06.timeout'>600</entry>

value delivered in seconds for a 10 minute setting. it is right?

Correct. You can also use server.timeout if you want it to apply to all protocols.

thank you very much Anton! I think that's the solution, I'll try it!

@Heleman Vargas

Please, give us an update if it fix your problem

Issue resolved! this parameter solved the problem:

<entry key = 'server.timeout'> 600 </entry>

Thanks a lot!