that function returns a non-zero value, then C<wait()> terminates
immediately, whether or not any events remain, and returns that value.
If an error occurs on one of the connection in the pod, then it is
that function returns a non-zero value, then C<wait()> terminates
immediately, whether or not any events remain, and returns that value.
If an error occurs on one of the connection in the pod, then it is