SYSTEM can use network resources without doubts, because UNIX domain socket works under NT service, inetd also works as NT service.
Turning to accept() problem errno was set to EBADF. I parsed fhandler_socket.cc's method accept(); there are 2 places where EBADF might be set: 1st after sock_event handling if blocking (but I use FASYNC | O_NONBLOCK), 2nd after ancestor's accept() which checks for invalid handle. It seems that socket descriptor is suddenly closed or invalidated under NT service. I've even tried to run some very simple TCP socket servers through SCM, but it fail. Don't forget that all OK with it while it runs from console as application. Is such behaveour normal? -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/