>perl -v
This is perl 5, version 12, subversion 3 (v5.12.3) built for MSWin32-x86-multi-thread
...
Binary build 1204 [294330] provided by ActiveState http://www.ActiveState.com
...

>perl a.pl -port=12347
server:41930 client:41930 cycles: 597.742/secTerminating on signal SIGINT(2)