I don’t know if this is exactly what you are looking to accomplish….
on Linux/Unix
lsof|grep 13013
13013 is the port that 5.5 uses for the host server
Nobody using GUI
/home/hci >lsof |grep 13013
java 8455 hci 7u IPv4 789339696 TCP *:13013 (LISTEN)
Just myself using GUI
/home/hci >lsof |grep 13013
java 8455 hci 6u IPv4 825252376 TCP inteng1-lx.mvnhealth.com:13013->sid5892.mvn.local:1860 (ESTABLISHED)
java 8455 hci 7u IPv4 789339696 TCP *:13013 (LISTEN)
Myself and co-worker using GUI
/home/hci >lsof |grep 13013
java 8455 hci 6u IPv4 825252376 TCP inteng1-lx.mvnhealth.com:13013->sid5892.mvn.local:1860 (ESTABLISHED)
java 8455 hci 7u IPv4 789339696 TCP *:13013 (LISTEN)
java 8455 hci 15u IPv4 825271820 TCP inteng1-lx.mvnhealth.com:13013->sid4730.mvn.local:2229 (ESTABLISHED)
/home/hci >