You need to stop the system service and change the configuration.
The launch commands have changed
Bash:ExecStart=/usr/bin/php socket_server start -d ExecStop=/usr/bin/php socket_server stop ExecReload=/usr/bin/php socket_server restart
aha.... Almost

ExecStart=/usr/local/bin/php /home/nginx/domains/canadiancorvetteforums.com/public/socket_server.php start -d (code=exited, status=0/SUCCESS)
ccf_swoole.service: Can't open PID file /home/nginx/domains/mysite.com/public/src/addons/DCom/LiveContent/SocketServer/......
ccf_swoole.service: Main process exited, code=exited, status=255/EXCEPTION