On Fri, Jun 8, 2012 at 3:54 PM, Zhi Yong Wu <zwu.ker...@gmail.com> wrote: > On Fri, Jun 8, 2012 at 6:31 PM, Stefan Hajnoczi <stefa...@gmail.com> wrote: >> On Thu, Jun 7, 2012 at 3:54 PM, <zwu.ker...@gmail.com> wrote: >>> @@ -86,7 +82,16 @@ static void net_socket_send(void *opaque) >>> /* end of connection */ >>> eoc: >>> qemu_set_fd_handler(s->fd, NULL, NULL, NULL); >>> + qemu_set_fd_handler(s->listen_fd, net_socket_accept, NULL, s); >> >> What happens when this is not a listen socket? I suggest setting >> listen_fd to -1 during creation and not calling qemu_set_fd_handler() >> when listen_fd is -1 here. If listen_fd is 0 then we'll register >> net_socket_accept when standard input becomes ready! >> >>> closesocket(s->fd); >>> + >>> + s->fd = 0; >> >> -1 should be used since 0 is a valid file descriptor (standard input). > I think that s->fd = 0 doesn't cause every issue. When it is zero, > this fd hasn't been registered with every handler. You can see that > "qemu_set_fd_handler(s->fd, NULL, NULL, NULL);" before "s->fd = 0".
If s->fd = 0 because we are still listening and net_socket_cleanup() is called we will close() standard input. Stefan