+ /*
+ * There is no need to wake the (e)poll thread. If it was waiting for
+ * "out" events on the client's socket, it will see that no payload
+ * in queued and will unsubscribe from that event.
+ *
+ * In the other cases, we have to wake the the (e)poll thread to either
+ * handle the error on the client or to get it to monitor the client "out"
+ * events.
+ */