Hello,I want to analyze two source codes. I have no idea what is the difference between them but one is shuting down an own service. I want to analyze the package sent with tcpdump. Have you any clue ? One of them is tcp_check of nagios, open tcp port testing utility, and the other one is check_tcp.c of keepalived, which is a part of health checkers of keepalived.
Could you open my eyes ? Thank you!