Vortex:
Thanks for the link, I have never thought how many viruses can be in my small program, :-),
i.e. :
PUA.Win32.Packer.PellesC400450Ex-1
Backdoor.Win32.Poison!IK
probably all socket functions are potential dangerous for anti virus scanner.
I have now splitted the client and server in two separate programs, at least AVIRA doesn't recognize
a virus now, but it is really weird.
Thanks for all comments,
Regards,
Micha