pr = (struct PFwdPrivate *) sk_get_private_ptr(s);
void pfd_confirm(Socket s){    struct PFwdPrivate *pr = (struct PFwdPrivate *) sk_get_private_ptr(s);    if (s == NULL)	return;    pr->ready = 1;    sk_set_frozen(s, 0);    sk_write(s, NULL, 0);}